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Failure Analysis of a Cruciform-Leg Transmission Line Tower Int. J. Steel Struct. (IF 0.878) Pub Date : 2021-01-15 Veerendra Kumar Shukla, Munusamy Selvaraj, Kalla Vijaya Kumar
Design of latticed steel power transmission towers is a challenging task, which involves lengthy modeling and detailing of significant amount of steel members and connections. The tower is analyzed and designed as a space truss and various members of tower are checked for Tension, Compression and Slenderness Ratio. Sometimes, due to unavailability of required sections or economical point of view, single
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New Elastoplastic Analysis of Two-Dimensional Frames When Some Plastic Hinges Unload Elastically Int. J. Steel Struct. (IF 0.878) Pub Date : 2021-01-09 Fethullah Uslu, Mehmet Tevfik Bayer, Mustafa Haluk Saraçoğlu
Two-dimensional frames are made of elastic and perfectly plastic materials. Frames are analized by using the step by step elastoplastic analysis method where the applied loads are gradually increased at each step until a plastic hinge is developed. Then an equivalent frame model is generated by placing a mechanical hinge at the location of the plastic hinge and the increased external loads and the
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Design of Prestressed W-Shape Beams with a Separated Prestressing Cover Plate Int. J. Steel Struct. (IF 0.878) Pub Date : 2021-01-07 Kee Dong Kim, Hyo Il Ahn, Ki Jang Han, Dong Seong Kim
Prestressed steel beams with a prestressing cover plate (PBCP), which are expected to overcome the limitations of prestressed steel girders using tendons, were investigated in this study. Experiments and finite element analyses (FEA) were performed to present a design procedure. The maximum compressive force according to flange slenderness, which could be applied to steel beams subjected to bending
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The Behavior of Welded Moment Connections in Box-Columns and Investigating Applied Demands for Different Cyclic Loading Protocols Int. J. Steel Struct. (IF 0.878) Pub Date : 2021-01-06 M. Ghassemieh, M. Hassani Sokhtesaraei, S. R. Mirghaderi
The strength and deformation capacity of structural elements are influenced by their cumulative damages received through load cycles. Loading protocols would provide the estimation of the structural components’ capacities and a proper simulation of the seismic reality, which are used to assess the performance of connections. Given the widespread application of I-beam to box-column moment connections
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An Experimental Study on Bolt Looseness Monitoring Using Low-Cost Transfer Impedance Technique Int. J. Steel Struct. (IF 0.878) Pub Date : 2021-01-06 Jong-Won Lee
A technique to detect the bolt looseness in steel frame using the transfer impedance technique, which is a dual piezoelectric material technique, for bolted joint structural health monitoring is experimentally studied. An expensive impedance analyzer should be used to employ the single piezoelectric material technique (SPMT) while a general function generator and a digital multimeter can be used to
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Cold-Formed Steel Lipped Channel Section Columns Undergoing Local-Overall Buckling Interaction Int. J. Steel Struct. (IF 0.878) Pub Date : 2021-01-06 Krishanu Roy, Tina Chui Huon Ting, Hieng Ho Lau, Rehan Masood, Rayed Alyousef, Hisham Alabduljabbar, Abdulaziz Alaskar, Fahed Alrshoudi, James B. P. Lim
This paper presents an experimental and finite element (FE) investigation into the local-overall buckling interaction behaviour of axially loaded cold-formed steel (CFS) channel section columns. Current design guidelines from the American Iron and Steel Institute (AISI) and the Australian and New Zealand Standards (AS/NZS) recommend the use of a non-dimensional strength curve for determining the axial
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Linear and Nonlinear Behavior of Steel Buildings with Different Bracing Systems Int. J. Steel Struct. (IF 0.878) Pub Date : 2021-01-03 Sulaiman Al-Safi, Ibrahim Alameri, Waleed Abdullah Wasel, Amjad Basheer Al-kadasi
In this study, the effects of wind and seismic loads on 5, 10, and 15 story steel buildings with different bracing systems were investigated. Linear static and nonlinear dynamic analyses were performed to assess the base shear, base moment, and story drift for all bracing systems. In addition, the cost analysis was taken into consideration. Five structural configurations were used: V-bracing, inverted
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Improved Ultra-Low Cycle Fatigue Fracture Models for Structural Steels Considering the Dependence of Cyclic Damage Degradation Parameters on Stress Triaxiality Int. J. Steel Struct. (IF 0.878) Pub Date : 2021-01-03 Shuailing Li, Xu Xie, Qin Tian, Cheng Cheng, Zhicheng Zhang
The ultra-low cycle fatigue (ULCF) fracture initiation caused by cyclic large plastic strain in structural steels is often the governing limit state in steel structures when subjected to strong earthquake actions. Based on the author’s previous work, this paper presents the improved cyclic void growth model (CVGM) and degraded significant plastic strain (DSPS) model considering the dependence of cyclic
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Temperature Distribution and Mechanical Response of Orthotropic Steel Bridge Deck During Paving of Gussasphalt Pavement Int. J. Steel Struct. (IF 0.878) Pub Date : 2021-01-03 Liang Fan, Weipeng Yang, Dan Zhou, Zhengyi Li
To investigate the temporal–spatial temperature field and mechanical response of an orthotropic steel bridge deck during paving with gussasphalt concrete (GAC), in situ monitoring of the Cuntan Yangtze River Bridge in China was conducted during GAC paving, and a finite element method model of the temperature field was established. The test and model show the following: (1) The maximum temperature occur
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Damaged Tubular T-joints Retrofitted with Carbon Fiber Reinforced Polymer Subjected to Monotonic and Cyclic Loadings Int. J. Steel Struct. (IF 0.878) Pub Date : 2021-01-02 Peng Deng, Jianxun Guo, Yan Liu, Boyi Yang
Owing to seismic, wave, or wind actions, tubular joints used in onshore and offshore civil infrastructures may require retrofitting to withstand both static and cyclic loadings. In the present study, bearing capacities, failure modes, and ductilities of damaged tubular T-joints retrofitted with carbon fiber reinforced polymer (CFRP) were investigated. Two-step loading was applied: first, a pre-determined
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Analysis of Stressed Skin Behaviour of a Steel Façade Frame Under Varying Structural Conditions Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-11-19 Todor Vacev, Andrija Zorić, Slobodan Ranković, Miloš Milić, Stepa Paunović, Ivan Nešović
Steel structures are traditionally designed neglecting the in-plane bearing capacity of the cladding. However, the cladding can act in coordination with the main structure, behaving as a diaphragm and contributing to its spatial stability, enabling the so-called stressed skin concept design. The subject of this paper was an analysis of behaviour of a sample steel frame cladded with corrugated sheet
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Interaction of Buckling Modes for Cellular Steel Beams Under Flexure Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-11-19 Rujuta A. Bhat, Laxmikant M. Gupta
Steel beams with web openings are extensively used in commercial structures because of their advantages in saving headroom and for providing a passage for utilities like air ducts, water pipes, etc. Design guidelines for such beams are provided by the EuroCode3 and by AISC design guide. The Indian Standard does not provide the design guides and thus an attempt has been made in this paper to utilize
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Experimental and Numerical Studies on Dynamic Characteristics of Long-Span Cable-Supported Pipe Systems Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-11-13 Marvin Paul Agwoko, Zhihua Chen, Hongbo Liu
Cable-supported pipe structure (CSPS) is a system of structure which has improved capacity over conventional elevated pipe structure, in terms of the capacity of span but with limited application owing to insufficient vibration characteristics and performance evidence. The study focuses on experimental modal and updating of the 64.8 m CSPS model to improve the dynamic behavior of the CSPS structure
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Strength Evaluation of Angle Type Shear Connectors in Composite Beams Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-11-09 Jun-Seop Lee, Kyung-Jae Shin, Hee-Du Lee, Jong-Hun Woo
Composite structures are used in structural systems to take advantage of concrete and steel, and the role of shear connectors between the two is extremely important. Currently, anchor- and angle-type connectors are mainly used as shear connectors, and the angle type offers several advantages over the anchor type. The angle type can be manufactured as a shape that fits the composite structure with a
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Local and Distortional Interaction Buckling of Cold-formed Thin-Walled High Strength Lipped Channel Columns Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-11-09 Lihua Huang, Wenbin Yang, Tingwei Shi, Jiting Qu
In this paper, a series of axial compression tests were conducted on lipped channel columns constructed from cold-formed high strength Grade G550 steel sheet of thickness of 1 mm in order to investigate the local and distortional interaction buckling performance. The failure modes, ultimate loads and load–displacement curves of the specimens were reported and analyzed. The experiment revealed the deformation
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Evaluating Local Buckling Strength of HSB460 Steel Tubular Columns Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-11-09 Seong-Wook Han, Yeun Chul Park, Ho-Kyung Kim, Doobyong Bae
High performance steels for bridges (HSB), as adopted by the Korean Design Standard (KDS), having a yield strength greater than 350 MPa have recently been developed. Notably, HSB460, which has a minimum yield strength of 460 MPa, does not exhibit a yield plateau beyond yielding and exhibits strain hardening. Such characteristics could provide advantages by absorbing the greater strain energy of steel
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Seismic Response Control Performance Evaluation of Tuned Mass Dampers for a Retractable-Roof Spatial Structure Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-11-06 Young-Rak Lee, Hyun-Su Kim, Joo-Won Kang
Choosing the installation location of a tuned mass damper (TMD) is the most important factor to consider when controlling dynamic response of a structure. It is also necessary to study whether the mass of the TMD installed on the structure effectively reduces the seismic response to the dynamic load. This study investigates the control performance of a seismic load was using a TMD installed on the
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Research on the Law of Stress Development Along Backfilling Process Between Crest and Valley of Buried Corrugated Steel Pipe Culverts Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-11-05 Baodong Liu, Haibo Sun, Weibo Xu, Yafei Shi, Beichen Zhang, Mengmeng Yao
Although buried corrugated steel pipe culverts have been studied intensively in the past decades, the stress development law between crest and valley during backfilling process is still not analyzed sufficiently, which is an important technical difficulty for the construction of this kind of structures. In this paper, a three-dimensional finite element model (FEM) is developed to simulate the behavior
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A Study on Live Load Deflection Criteria of Long-Span Steel Bridges Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-11-05 Ki-Jung Park, Do-Young Kim, Eui-Seung Hwang
Under-clearance of bridges is one of the major considerations when planning and designing bridges. Especially for sea-crossing bridges, under-clearance is more important for safe passage of ships. Long span cable bridges with steel orthotropic deck usually show relatively large deflections and excessive deflections may be not only disadvantageous to the clearance plan, but also a problem in bridge
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Reduction of Stress Concentration at Stop-Hole by Bolting a Crack Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-11-04 Toshiyuki Ishikawa, Shogo Kiyokawa, Wataru Nakatsuji
A stop-hole, which is drilling at the crack tip, is one of the famous tentative repairs of fatigue cracks in steel structures. When the crack becomes longer, the stress concentration of the stop-hole also increases. Therefore, during the tentative repair of long fatigue cracks, the chances for re-initiation of the fatigue cracks from the stop holes are high. The bolting stop-hole method is a useful
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Experimental Investigation into In-plane Stability of Concrete-Filled Steel Tubular Parabolic Arches Under Five-Point Concentrated Loads Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-10-31 Qing Hu, Changyong Liu, Changchun Yuan, Yuyin Wang, Sumei Zhang
This paper deals with experimental investigations into in-plane stability of fixed concrete-filled steel tubular (CFST) parabolic arches. Three CFST arches with the same span but different rise-to-span ratios were tested under five-point symmetrical concentrated loads over the full span. All applied loads were controlled in synchronization. The test results show that the test arches buckled in an antisymmetric
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Crushing Behavior of Hierarchical Hexagonal Thin-Walled Steel Tubes Under Oblique Impact Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-10-29 Weiwei Li, Hualin Fan
In this paper, oblique crushing behaviors of the hierarchical hexagonal steel tubes were investigated. In the oblique impact, the crushing mode transfers from axial crushing dominated mode to bending dominated mode with the increase of the impact angle. In normal impact, the hierarchical steel tubes have progressive folding and global folding, depending on the cell number and the thickness of the sandwich
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Bond Behavior in Flexural Members: Numerical Studies Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-10-28 Ankit Bhardwaj, Vasant Matsagar, A. K. Nagpal, Sandeep Chaudhary
Adhesive bonding has recently emerged as an alternative to shear stud connection in steel–concrete composite flexural members. Research on adhesive-bonded steel–concrete composite flexural members is in a preliminary stage, and the behavior of the bond layer in these structures is not well understood yet. A three-dimensional finite element model is developed and used to conduct the parametric investigations
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Experimental Study on Load Carrying Capacity Enhancement of System Supports Considering Full Installation of Bracing Members Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-10-26 Hyung Do Lee, Jeong-Hun Won, Nam-Gwon Jang, Ho-Seong Mha, Seong-choon Jeong, Seungjun Kim
This study investigated the ultimate load capacity of assembled system supports by comparing cases with and without bracing members. Supports used as temporary structures are essential to resist the concrete casting load. Current trends encourage the use of system supports to prevent the collapse of supports, which occur frequently. Studies regarding the ultimate behavior of system supports in Korea
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Lateral Torsional Buckling Strengths of Stepped Beams at Midspan Exposed to Elevated Temperature Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-10-24 Shane Alolod, Jongsup Park, Deokhee Won
The American Institute of Steel Construction provides design equations for the lateral torsional buckling (LTB) of beams under fire. However, these equations are limited only to prismatic beams. Stepped beam factors are introduced by researchers that accounts the change in cross-sections of beams to determine capacities of stepped beams under normal temperatures. This paper assesses the validity of
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Post-Fire Exposure Behavior of Circular Concrete-filled Steel Tube Column under Axial Loading Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-10-19 Aditya Kumar Tiwary, Ashok Kumar Gupta
Concrete-filled steel tube (CFST) columns are a composite member which mainly consists of steel tube infilled with concrete that are increasingly being used as load-carrying members these days. In construction industry, CFST columns are being preferred for the development of tall buildings and long-span bridges. This paper presents an experimental investigation on concrete-filled steel tube (CFST)
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Differences in the Acoustic Emission Characteristics of 345 MPa Normal-Strength Steel and 460 MPa High-Strength Steel Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-10-17 Yiting Yang, Yan Wang, Kehao Li
This study characterized 345 MPa normal-strength steel (NSS) and 460 MPa high-strength steel (HSS) with the acoustic emission (AE) technique. Pencil lead break (PLB) and tensile tests were performed, and the generated AE signals were recorded. The AE signals from the PLB tests were converted into the frequency and time-frequency domains via a fast Fourier transform (FFT) and wavelet transform. The
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Effects of Impact Loads on Local Dynamic Behavior of Orthotropic Steel Bridge Decks Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-10-16 Niujing Ma, Ronghui Wang
To investigate the local dynamic behavior of orthotropic steel bridge decks under impact loads, this paper proposed a type of combined plate-beam element for analysis of trapezoidal stiffened plate and a type of 8-nodes solid-plate element for analysis of pavement. Besides, vehicle wheel loads are supposed to be triangular loads for convenience. Then, a model experiment was conducted to verify the
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Corrosion Environment Monitoring of Local Structural Members of a Steel Truss Bridge under a Marine Environment Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-10-15 Min-Gyun Ha, Seok Hyeon Jeon, Young-Soo Jeong, Ho-Seong Mha, Jin-Hee Ahn
Corrosion environment monitoring was conducted on the structural members of a steel bridge truss in a marine environment. The corrosion depth measured on exposed monitoring steel plates and the galvanic corrosion current measured by Atmospheric Corrosion Monitoring sensors attached to structural members were used to evaluate the local corrosion environment of each type of structural member in the steel
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Stability of Large-Size and High-Strength Steel Angle Sections Affected by Support Constraint Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-10-13 Yun Sun, Yaojie Guo, Haoyuan Chen, Ke Cao
The influence of support stiffness on the effective calculated length which plays an essential role in the axial compression stability of steel memeber is always ignored due to the ideal support constraint that is difficult to achieve in the test. In this paper, the calculation method of the effective length factor was put forward by the mechanical model of the axially compressed member. The supports
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Optimizing the Design of Tall Buildings Using the Principle of Virtual Work: The Effect of Semi Rigid Connections Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-10-06 Alex Elvin, Johnnie Strydom
The Virtual Work Optimization Method (VWOM) is used to optimize tall buildings with semi rigid connections. The VWOM is an automated method that minimizes the mass of a structure with a given geometry, deflection criteria and load cases, while adhering to building code requirements. Members are selected from a user defined database to meet strength and stiffness criteria. The rotational stiffness of
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Residual Bearing Capacity of Damaged Large-Diameter Drum-Welded Spherical Joints Post Disaster Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-10-06 Hongbo Liu, Haotian Gao, Mashrah Waleed Ali Hamed, Zhihua Chen
Building structures may encounter strong wind, earthquake, snowstorm, and other disaster loads during their service period. Therefore, the members and joints may incur different degrees of damages. However, some damaged members and joints can continue functioning after reasonable assessment and repair. In this study, drum-welded hollow spherical joints (DWHSJs) that are used in Beijing’s New International
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Sensitivity Analysis of Tubular-Web Reduced Beam Section Connections Under Cyclic Loading Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-29 Masood Vahedi, Reza Ardestani, Seyed Mehdi Zahrai
Recently a new type of Reduced Beam Section (RBS) connection called “Tubular Web RBS (TW-RBS)” has been numerically and experimentally studied. TW-RBS connections are made by replacing a part of web with a tube or pipe at the desirable location of the beam plastic hinge. This paper aims to numerically investigate the effect of key factors such as position, diameter, and thickness of the tube on the
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Dynamic Analysis of Semi-submersible Under the Postulated Failure of Restraining System with Buoy Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-29 Srinivasan Chandrasekaran, Syed Azeem Uddin, Mubarak Wahab
Coupled dynamic analyses of a deep-water Semi-submersible platform, in the South China Sea region, is carried out under postulated damage of the restraining system for both 10 and 100-years return period events. Under the combined action of wind, wave, and current loads, motion responses of Semi-submersible at 1500 and 2000 m water depths are analyzed in time-domain. Dynamic tension variations in the
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Failure Pressure of Welded Hollow Spherical Joints Containing Grooving Corrosion Defects and Wall Reduction Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-28 Huiyun Chen, Hongbo Liu, Zhihua Chen
Welded hollow spherical joints (WHSJ) have been widely used in various space structures. Corrosion of WHSJ is inevitable and will eventually threaten the structural safety. This paper makes an assessment of the accuracy of quality inspection procedures commonly employed by spatial grid structure to calculate the failure pressure of corroded WHSJ via finite element analyses (FEA). Second, this paper
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Force–Displacement Relationship of the Butterfly-Shaped Beams Based on Gene Expression Programming Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-25 Alireza Farzampour, Iman Mansouri, Seyed Javad Mortazavi, Jong Wan Hu
Structural steel plates with engineered cut-outs to exhibit a controlled yielding mechanism is recently proposed for desirable structural performance compared to conventional systems. Butterfly-shaped beams with hexagonal cut-outs inside of the beam’s web are implemented to better align the bending strength diagram along the link length with the corresponding demand shape of the applied moment diagram
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Optimal Design Parameters of Stiffeners for Improving Seismic Performance of Links in EBFs Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-23 Masood Mojarad, Maryam Daei, Mehrdad Hejazi
In eccentrically braced frames (EBFs), the link beam is the main factor determining the behavior of this type of system. In order to enhance the ductility and delaying the web and flange buckling, the link beam is reinforced using intermediate web stiffeners to improve its performance and energy dissipation capacity. The web stiffeners spacing criteria is based on short links under pure shear, which
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Experimental and Numerical Study on the Effect of Heel Plate Length and Thickness on the Structural Integrity of Cold-formed Steel Roof Trusses Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-23 Je Chenn Gan, Jee Hock Lim, Siong Kang Lim, Horng Sheng Lin
Cold-Formed Steel (CFS) is widely used as secondary framing material. Nowadays, the research of CFS as a primary steel roof truss system became more favoured. Therefore, it is very important to understand the behaviour of CFS roof trusses due to the uncertainty of the configuration of CFS roof trusses can affect its structural integrity. The objective of this research is to investigate the effect of
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Development of Modified Ibarra–Krawinkler Deterioration Model for One-Story Steel Plate Shear Wall Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-21 Omid Bamshad, Mehdi Ghassemieh
Nowadays, steel plate shear wall is considered as a suitable system for conventional lateral load resisting systems, because of high post buckling strength, significant ductility, stable hysteresis characteristics and high initial stiffness. Although early experimental and analytical research on steel shear wall clarified various aspects of seismic behavior of such system, but still several issues
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Damage Evaluation of Composite Beams Under Fire Conditions Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-20 Moon Soo Kang, Jun Won Kang, Seong-Hoon Kee, Byong-Jeong Choi
This paper presents a numerical method for damage evaluation of steel structures under fire conditions based on degraded material property values. As the measure of structural damage to fire, a damage index is proposed which indicates how much a structure loses its material strength when exposed to fire. The index is formulated with the ratio of a volume-weighted average of material strength at elevated
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Presentation of Critical Buckling Load Correction Factor of AISC Code on L-Shaped Composite Columns by Numerical and Experimental Analysis Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-19 Seyed Ali Mousavi Davoudi, Morteza Naghipour
Concrete-filled steel tubular (CFT) columns have been widely used as structural members in buildings and bridges in recent years, because of their properties, such as high strength and stiffness, good ductility, and convenience for construction. In CFT columns, the bearing capacity of columns is inversely related to buckling, therefore, buckling is of particular importance at these sections, the AISC
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Suspension Footbridge Form-Finding with Laplacian Smoothing Algorithm Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-18 Zhuo-ju Huang, Jie-min Ding, Sheng-yi Xiang
In this paper, Laplacian smoothing, which is an algorithm originally used to smooth polygon meshes in computer graphics (CG), is applied to solve a structural form-finding problem with the proof that the result of such algorithm is equivalent to force density method. Such CG algorithm is used on the design of a new-built suspension footbridge in Shaoxing, China and the algorithm works well. Since Laplacian
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A Proposed Approach for Obtaining the Shear Centre and Monosymmetry Constant for an I-section Beam with a Welded Channel Cap Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-18 Kenny Mudenda, Matongo Kabani
Monosymmetric sections made from I-section beams with a channel cap welded to the top flange find use in crane runway beams or girders for medium duty cranes of moderate spans. These beams are susceptible to lateral-torsional buckling when the compression flange is laterally unsupported. In order to determine the critical elastic buckling moment several geometrical parameters must first be determined
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Robustness Analysis of a Flexible Cable-Strut Tensile Structure Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-17 Lian-meng Chen, Wei-feng Gao, Zhi-chao Jiang, Yi-yi Zhou, Fu-bo Zhang, Shi-lin Dong
Currently, the robustness analysis of structure is primarily related to rigid structures, and little has been done to study the robustness of spatial flexible cable-strut tensile structures with larger span, more complex forms, lower redundancy, more sensitivity to unexpected interference such as construction deviations, etc. Based on the \( H_{\infty } \) theory, this paper starts with the fundamental
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Detection of Fracture in Steel Members of Building Structures by Microstrain Measurement Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-16 Jun Iyama
This paper discusses a possibility of detecting structural damage caused by an earthquake, by measuring the time history of the strain of beams and columns before and/or after the earthquake. An index called “local stiffness” is defined as the ratio of section force amplitude to representative displacement amplitude, and this ratio can be physically interpreted as stiffness. By calculating section
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Parameters Effect on Predicting Fire Resistance of Ultra-high Strength Concrete Filled Protected Square Steel Tubular Columns Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-14 Xiao Lyu, Gan-Ping Shu, Er-Feng Du
Ultra-high strength concrete (UHSC) with compressive strength greater than 100 MPa at room temperature has been developed for concrete filled square steel tubular column for use in high-rise buildings. The fire resistance of UHSC filled protected square steel tubular columns exposed to the standard ISO fire is investigated in this paper. For this purpose, numerical heat transfer analysis and nonlinear
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Influence of Brittle Fracture of Shear Connectors on Flexural Behavior of Steel–Plate Concrete Composite Beams Under Cyclic Loading Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-14 Bing Lu, Changhai Zhai, Shuang Li, Duofa Ji, Xianbin Lu
The existing push-out test results showed that the ultimate shear capacities and ultimate slips of tie-bars and studs under cyclic loading were significantly lower than those under monotonic loading, which could significantly affect the seismic performance of steel–plate concrete composite (SC) structures. The flexural behavior of two SC beams subjected to cyclic loading was investigated. Specimen
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Parametric Analysis on Hysteresis Performance and Restoring Force Model of LYP Steel Plate Shear Wall with Two-Side Connections Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-10 Yaqi Suo, Shenggang Fan, Chenxu Li, Shaoru Zeng, Chengliang Liu
Parametric analysis on the hysteresis performance of the low yield point steel plate sheer wall (LYP SPSW) with three different stiffening configurations, including unstiffened, cross stiffened and diagonal stiffened, was conducted using the finite element models which have been verified by the test results. The parameters which have effects on the hysteretic behavior of LYP SPSW include ratio of height-to-thickness
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A Concise Hysteretic Model of 590 N/mm 2 Grade High Performance Steel Considering the Bauschinger Effect Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-10 Satoshi Yamada, Yu Jiao, Dong-Seok Lee, Takanori Ishida, Shoichi Kishiki
A concise hysteretic model of 590 N/mm2 grade high performance steel SA440 which is used in Japan for building structure is proposed. First, cyclic loading tests of steel components under constant and programmed strain amplitude are performed. Then, hysteresis characteristics are modeled by decomposing the hysteresis curve into the skeleton part, Bauschinger part and the elastically unloading part
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Modeling and Dynamic Response of Curved Steel–Concrete–Steel Sandwich Shells Under Blast Loading Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-09 Lingzhao Meng, Yonghui Wang, Ximei Zhai
The steel–concrete–steel sandwich structures are usually composed of concrete core and face steel plates. This paper presented the dynamic response of the curved steel–concrete–steel (SCS) sandwich shells subjected to blast loading. The bolts were employed to connect the face steel plates and the concrete. Numerical model was established based on LS-DYNA and the accuracy of the modelling method was
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Geometric Imperfection Distributions of Existing Reticulated Shells: Theoretical and Experimental Analysis Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-09 Jun Wu, Yongfeng Luo, Lei Wang
Geometric imperfection is one of the most disadvantageous factors that impair mechanical behaviors of existing reticulated shell structures. However, the available consistent mode methods and statistical methods which usually applied in designing structures can hardly estimate the actual geometric imperfection distribution for existing structures, because these methods use the assumed imperfections
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Experimental Investigation of Block Shear Failure in a Single Angle Tension Member Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-02 Jagdish R. Dhanuskar, Laxmikant M. Gupta
A limited test data are available for double-bolt line connection in a single angle tension member, which failed in block shear. To address this, twelve single angle tension members with a double bolt-line connection was reported in this paper, considering the block aspect ratio and connection length as the test parameters. All the tested specimens were failed in block shear. For the tested specimens
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Progressive Collapse Mechanism Analysis of Concrete-Filled Square Steel Tubular Column to Steel Beam Joint with Bolted–Welded Hybrid Connection Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-09-02 Jing-Xuan Wang, Yong Yang, Wei Xian, Qiu-Ying Li
When vertical load-bearing members of building structures are subjected to accidental loadings, such as an earthquake, fire or explosion, the remaining structure chiefly relies on the beam mechanism and catenary mechanism of the steel beam as the main resistance capacity, to prevent local or large-scale progressive collapse. This paper presents a three-dimensional finite element model of concrete-filled
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Local Strain-Based Low-Cycle Fatigue Assessment of Joint Structure in Steel Truss Bridges During Earthquakes Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-08-31 Chao Jiang, Takeshi Hanji, Kazuo Tateishi, Masaru Shimizu
During the 2011 Tohoku Earthquake, a truss bridge joint structure was cracked due to large cyclic deformation, making us recognize the importance of assessing the seismic performance of joint structures in truss bridges from the viewpoint of low-cycle fatigue. In this study, seismic response analysis of an actual deck truss bridge was performed under different seismic waves, and local strain behavior
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Rapid Stress Analytical Solutions of Steel Strips Subjected to Non-uniform Tensile Loads Based on New Symplectic Method Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-08-31 Haijun Yu, Anrui He, Wenquan Sun, Chihuan Yao, Chao Liu
This paper deals with the stress distribution problem of steel strips subjected to non-uniform tensile loads at both ends, which induce the transverse in-plane compressive stress and is important for researching the transverse buckling of the steel strip. For stress distribution problem, the traditional finite element method (FEM) has acceptable accuracy while it takes too long computing time to be
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Parametric Analysis on Elastic Buckling Performance of Low Yield Point Steel Plate Shear Wall with Two-Side Connections Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-08-14 Shenggang Fan, Runmin Ding, Shaoru Zeng, Chenxu Li, Chengliang Liu
The steel plate shear wall (SPSW) with two-side connections can be arranged flexibly in the structure, and has no additional influence on the column, but its buckling capacity is difficult to be deduced directly by thin plate theory. The low yield point SPSW (LYP-SPSW) with two-side connections is proposed in this paper, including unstiffened LYP-SPSW, cross-stiffened LYP-SPSW and diagonally-stiffened
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Effect of Temperature-Induced Moment-Shear Interaction on Fire Resistance of Steel Beams Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-08-14 Mohannad Zeyad Naser, Venkatesh Kodur
The interaction between bending and shear effects in steel beams can be amplified under fire conditions due to rapid degradation in strength and stiffness properties of steel, together with temperature-induced local instability effects. This paper presents temperature-induced moment-shear (M-V) interaction phenomenon in compact (Class 1) steel beams. Results generated from numerical studies are utilized
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Seismic Assessment of Pipe Racks Accounting for Soil-Structure Interaction Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-08-13 Luigi Di Sarno, George Karagiannakis
The research on the seismic assessment of pipe racks accounting for coupling and soil-structure interaction effects is still scarce. Common industrial practice overlooks critical design aspects due to the insufficiency of current codes that might result in over-conservative or unsafe design. This work addresses the nonlinear analysis of a petrochemical plant steel pipe rack accounting for dynamic interaction
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Design Optimization of Tapered Steel Wind Turbine Towers by QPSO Algorithm Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-08-13 Augusto Furlanetto, Herbert Martins Gomes, Felipe Schaedler de Almeida
Wind energy has become one of the most widely used alternative energy sources in recent years due to its clean and renewable character. In the context of increasing demand for new facilities, the cost of a wind turbine is a key factor for the success of new wind farms. The reduction of the amount of material used to build the wind turbine tower is one way to reduce the project cost. This work presents
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Research on a New Class of Planar Tensegrity Trusses Consisting of Repetitive Units Int. J. Steel Struct. (IF 0.878) Pub Date : 2020-08-13 Sili Li, Xian Xu, Jiaqi Tu, Yafeng Wang, Yaozhi Luo
Tensegrity structure is a prestressed self-equilibrated system consisting of compressed struts and tensioned cables. Planar truss is one of the most common forms of engineering structures with a wide application. This paper proposes a new class of planar tensegrity trusses whose prototype is unintentionally found by a topology optimization algorithm. The prototype truss is composed of two basic units