The treatment of diverse uncertainties is an important challenge in structural engineering problems, especially from the viewpoint of realistic analysis. Inaccuracy and variability are always present and have to be quantified by either probabilistic, possibilistic, polymorphic or other approaches. Regardless of the applied uncertainty quantification method, the numerical predictions have to be useful

The combination of two high performance materials, ultra-high performance concrete and carbon reinforcement, allows for the construction of efficient, durable thin-walled structural elements. In order to investigate the shear behaviour of such elements a test series on thin-webbed textile reinforced T-beams was planned and carried out at the Institute of Structural Engineering at TU Wien. In the experiments

This paper investigates the behaviour of exposed column base-plates with four outer anchor bolts subjected to monotonic loading. The results of six full-scale tests on steel column base-plate connections subjected to uni/biaxial bending moment are presented. The influence of the base-plate thickness and the bending moment axis orientation on the connection response is thoroughly investigated. In addition

The use of cold-formed steel trusses in roof framing has significantly increased recently. Cold-formed steel roof trusses are ideal and efficient systems for a variety of applications due to their design flexibility and ease of construction. Past research explored the behavior of these truss systems up to the ultimate capacity point; however, the inelastic behavior to the failure was not fully captured

The present paper proposes some enhanced models, with different levels of accuracy, for the design of monolithic CLT shear wall based on the definition of reliable N-V interaction domain. The basic assumptions and the novelty aspects of the proposed models are presented. In particular, the adoption of an elastic-perfectly-plastic constitutive law for the timber instead of an elasto-brittle one and

The corrosion of steel rebars in reinforced concrete (RC) structures will lead to the deterioration of fatigue performance and fatigue life. For the sake of resolving the corrosion problems of RC structures, the Impressed Current Cathodic Protection (ICCP) and Structural Strengthening (SS) techniques are often applied to repair the corroded RC structures. In this study, the ICCP-SS techniques are combined

In this study, the progressive collapse resistance capacities of steel ordinary moment frames (OMFs) and intermediate moment frames (IMFs) with different connection details were numerically evaluated and compared. Three prototype buildings with typical configurations were designed in accordance with Korean building code (KBC). OMFs with welded unreinforced flange-bolted web (WUF-B) connections, OMFs

An empirical tornado resilience model based on structural functionality, a metric with clearly defined physical states, is developed for light-framed wood residential buildings using field observations of damage and recovery following the February 2017 tornado in Naplate, IL. The resilience model is composed of independent damage and recovery models that serve as a complete resilience model for residential

The present paper reports a thorough experimental investigation into the net section failure behaviour and capacity of stainless steel staggered bolted connections in tension. The testing programme was carried out on 31 stainless steel staggered bolted connection specimens, with 18 made of austenitic stainless steel (grade EN 1.4301), 7 made of duplex stainless steel (grade EN 1.4462) and 6 made of

Increased number of studies of the performances of geopolymer concrete (GPC) structures reinforced with fibre reinforced polymer (FRP) under static loadings have been reported recently, aiming at developing an alternative of the traditional constructions with ordinary Portland concrete (OPC) and steel reinforcement because GPC is a sustainable construction material and FRP is corrosion resistant. Study

Inelastic flexural deformations adversely affect shear resistance of columns, and may cause building damage/collapse during earthquakes. In this paper, shear-flexure interaction on seismic performance of reinforced concrete columns constructed with recycled aggregate concrete is experimentally investigated. For this aim, reinforced concrete columns with low shear-span-to-depth ratio (2.3) were designed

To date, the shear contribution of lightweight self-consolidating concrete (LWSCC) members reinforced with basalt fiber-reinforced polymer (BFRP) bars (LWSCC-BFRP) has not yet been investigated. Therefore, the anticorrosion properties of BFRP bars combined with the advantages of LWSCC motivated this research to assess the behavior of such members under shear. Eight beams cast using LWSCC and normal-weight

Ultra-high strength concrete has been applied in concrete encased steel column to enhance strength and reduce usage of concrete. However, there are limited specifications in current design codes on ultra-high strength concrete encased steel columns (UHSCESC), particularly for fire effects. This paper presents numerical simulation of fire behaviour of UHSCESC exposed to standard fires. A thermo-mechanical

High efficiency and wide bandwidth are the main optimization directions for energy harvester. Based on flexoelectric theory, this paper presents a micro cantilever vibration energy harvester (VEH) with a broad bandwidth which achieved by collisions of two beams. The nanocrystalline graphene (NCG) is selected as base layer because its quality factor (Q factor) is highest compared with common materials

The geometrical and mechanical properties of reinforcing steels embedded in the RC structures may be deteriorated due to the aggressive environments, such as the carbonation, chloride, and wind-induced fatigue. The joint effects of aging and seismic load on the response of high-rise buildings are always neglected in current structural design specifications. This paper presents a probabilistic methodology

This paper investigates the static and fatigue flexural performance of ultra-high performance fiber reinforced concrete (UHPFRC) decks on the basis of a 500 m cable-stayed bridge, namely, the Malukou Bridge. A series of numerical studies was conducted on the bridge to reveal the stress level in the deck under service loads, and then two kinds of steel bar reinforced UHPFRC decks with different steel

In this work, a new mechanistic interface model is proposed to simulate the nonlinear bond behavior of steel reinforcement in concrete. With the motivations to reproduce the bond response more realistically and uncover the underlying mechanisms responsible for the high nonlinearity, the main characteristics including the damage evolution and frictional features are properly embodied during the establishment

To study the interfacial bond–slip behavior of shaped steel–engineered cementitious composite (ECC) materials, nine full-scale H-shaped steel–ECC specimens were tested. Theoretical equations for the ultimate and residual bond stresses were established via statistical fitting. A tensile constitutive model of the ECC was proposed, and cohesive elements were used in a finite element (FE) analysis to simulate

For many decades the designs of earthquake-resistant (aseismic) structures have been influenced by scaled experiments, underpinned by the theory of dimensional analysis. Although scaled experiments still play an important role, they are recognised to suffer shortcomings, which are particularly severe when scaling ratios are pronounced. The issue is one of scale effects and the inability of dimensional

Carbon fibre-reinforced polymer (CFRP) plates are widely used to strengthen reinforced-concrete (RC) structures. At present, most studies focused on the short-term performance of strengthened RC beams with a prestressed CFRP plate, and very limited information is available on their durability, which is of importance in certain cases, such as high-piled wharfs and bridges in marine environments. This

Adhesive bonding connection was studied by means of push-out and bending tests performed on specimens cast in the same batch in order to better understand the correlation between interface characterisation and structural bending behaviour. The influence of concrete properties, cross-section and bonding joint geometry or bending configuration were investigated. Results showed that bonding connection

This research presents a numerical analysis of bolts used as mechanical connectors in circular concrete-filled steel tube columns. The numerical model was calibrated with the experimental results and was analyzed different parameters such as bolt lengths, steel tube thickness, and concrete strength. The finite element model was developed in Abaqus software, using different constitutive models of concrete

Masonry walls exhibit low tensile strength and high material heterogeneity, which makes them especially vulnerable against cyclic loading conditions, such as those typical in earthquakes. This paper presents the experimental results obtained from tests on three masonry walls reinforced with textile reinforced mortar (TRM) materials subjected to in-plane cyclic loading. These full-scale masonry walls

This paper presents a structural response analysis based on the results of experiments involving gas explosions in inhomogeneous hydrogen-air mixtures in a channel. The channel was 3 m long, with a cross-section of 100 mm by 100 mm, and open at one end. Hydrogen was released into the channel using 0.25 mm and 0.5 mm ID nozzles. Strong and relatively prolonged pressure oscillations were recorded during

In high-rise wall-type residential buildings, thick RC transfer slabs have been widely used for parking space or public space. Despite the different behavior from thin RC flat slab, design methods for thin RC flat slab are applied to the thick RC transfer slab, due to the limited literature on the two-way shear behavior of RC transfer slab systems with small shear span-to-depth ratio. In the present

A precast concrete frame with replaceable energy-dissipating connectors (REDC-PCF) is proposed in this paper. The replaceable energy dissipating connectors (REDCs) are installed in precast concrete connections, where plastic hinges may form. During minor earthquakes, these connections utilize REDCs to provide the flexural stiffness; during medium or large earthquakes, the REDCs act as energy dissipating

The use of fiber reinforced polymer (FRP) bars in GeoPolymer Concrete (GPC) structures has drawn increasing attention in recent years. The application of GPC with basalt fiber reinforced polymer (BFRP) reinforcements in replacing Ordinary Portland cement Concrete (OPC) and steel reinforcements leads to green and sustainable constructions. Currently, very limited studies have been conducted to investigate

This paper studies the effect of adjacent braces interaction (ABI) on seismic and static performance of circular hollow section (CHS) unstiffened tubular connections under out-of-plane bending moment. A comprehensive comparison between CHS KK-connections (each chord side has two identical braces named adjacent braces) and the corresponding CHS X-connections (each chord side has one brace) is performed

This study investigates the effectiveness of highly ductile fiber-reinforced concrete (HDC), which is characterized by its high ultimate compressive strain ability, in improving the failure mode and deformational characteristics of over-reinforced concrete beams. The flexural behavior of over-reinforced concrete beams strengthened with HDC was experimentally investigated. The variables included the

This paper introduces beam-through framed connections (BTFCs) with innovative T-type curved knee braces (TCKBs). Beam-through steel frame (BTF) is an emerging system using strip braces as lateral force-resisting components. Even though strip braces can provide high strength and stiffness, they will get slack after yielding since compressive buckling, and dynamic characteristics of the system will be

This article summarizes a research campaign on the flexural behavior of a certain type of slim floor beam, generally known as Deltabeam. Seven (7) full-scale composite specimens with various cross-sections were tested under three-point sagging bending up to large displacements to test the robustness of the system. Experimental load–displacement curves, slip values and damage patterns are reported and

Excessive amounts of longitudinal and transverse reinforcement are required in concrete structures for safety-related nuclear structures to satisfy design and safety regulations. Closely spaced conventional single-leg stirrups are required for seismic detailing. These requirements lead to rebar congestion, difficulties in installation, and delay in the construction period. To solve these problems,

To improve the constructability of large columns, a prefabricated steel-reinforced concrete (PSRC) composite column with bolt-connected steel angles was developed. In the present study, flexural tests were performed on simply supported PSRC specimens to investigate the flexural capacity and bond strength between steel angles and concrete. The test results showed that the bolt assemblies and transverse

High-altitude and cold regions (HACR) have extremely low temperatures accompanied by frequent cold currents in winter, causing significant thermal stress and cracking in concrete structures. Based on previous studies, by using ABAQUS as the development platform and FORTRAN as the development tool, a calculation program for temperature fields during concrete dam construction and operation processes

In this paper, the shear behavior of six full-scale Inverted-T Bent Caps (ITBC) specimens with skew angles of 30°, 45°, and 60° are reported to study the effect of skew angle and rebar arrangement on structural performance. The transverse reinforcement in skewed ITBCs is designed as per the traditional methods the TxDOT Bridge Design Manual LRFD, which conform to the AASHTO LRFD Bridge Design Specifications

Splice connection, comprised of splice plates and slip-critical high strength bolts, is an efficient and convenient connecting technique for modular buildings. Previous investigations on this splice connection were mainly conducted based on tests of substructures, which may not reveal the real connection behavior in the whole modular building. To fill this research gap, this paper presents a comprehensive

This paper describes a sensing technique that has been entirely built from off-the-shelf electronic components, with the aim of providing its construction and programming guidelines as an open-source platform which can be continuously updated. The assessments carried out in this investigation indicate that the proposed sensor is suitable for deployment as an accelerograph for seismic monitoring of

In this paper, the results of experimental tests conducted on concrete-filled steel tubular (CFST) columns are presented. There is currently a deficit of data available that can be used to evaluate current guidance documents and provide assessment to improve their accuracy when considering the behaviour of CFST columns filled with high strength concrete. Thus, this paper aims to increase the volume

As traffic loads are ever increasing and bridge infrastructure is ageing, existing materials and connection methods used in renovation and new construction projects are reaching their limits. New materials, such as Fibre-Reinforced Polymer (FRP) in the form of hollow decks can be a competitive solution due to good resistance to fatigue and corrosion. By combining the stiffness provided by steel main

The aim of this paper is to present the development of discontinuous approaches to simulate the nonlinear dynamic behaviour of the civic clock tower of Rotella, in the province of Ascoli Piceno (Italy). The study involves the use of the Non-Smooth Contact Dynamics method implemented in the LMGC90© code, where sliding motions are governed by Signorini's impenetrability condition and dry-friction Coulomb's

Even though the intense seismic activity in Mexico and the great human and material losses produced in the country during the September 19th, 1985 and 2017 earthquakes, the use of passive control devices to mitigate the seismic risk is still very limited. At present, a very small number of structures has used energy dissipation devices and isolated systems. One of the reasons for the limited use of

Ductile concentrically braced frames (CBFs) with circular hollow shapes (CHS) have been one of the most common structural systems in seismic regions and are expected to undergo significant inelastic deformations mainly through post-buckling or yielding deformations in their bracing members. However, a comprehensive survey of the experimentally tested CHS specimens carried out in the course of this

There is a lack of studies available in the literature focusing on the reinforcement of slender masonry columns commonly observed in the practice. This work presents the results of an experimental investigation on the effect of bar mesh high ductile concrete (BMHDC) on the mechanical behavior of slender masonry columns subjected to different eccentric axial loading. Eighteen full-scale rectangular

The effective application of vibration-based damage detection (VBDD) methods as a structural health monitoring approach depends largely on the accurate measurement of modal properties, particularly the mode shapes. However, the modal properties of bridges and other civil engineering structures are commonly measured using an output-only approach and ambient excitation sources, which can lead to considerable

The stochastic subspace identification (SSI) method has been recognized as the most dominant and popular system identification technique in the time domain. Nevertheless, it cannot cope with the non-synchronicity of dynamic response measurements that happens sometimes in structural health monitoring practice. To overcome this, this study proposes a strategy for the SSI algorithm to realize system identification

The bonding performance of the interface between two concrete layers is of great importance for China Rail Track System III (CRTS III) slab ballastless track structure. While the bonding performance is close to the distribution and amounts of defects such as the bubble or the void on the bonding interface. In this paper, combining the Support Vector Machine (SVM) with the Particle Swarm Optimization

Sandwich-like structures can significantly reduce the self-weight and size of load-bearing elements. However determining the flexural response of multi-layered sandwich structures is not a trivial task, particularly their buckling response. This study consists of novel theoretical work for extending Allen’s and Southwell’s buckling theories in order to develop a comprehensive model for the buckling

A robust intensity measure (IM) is one that provides stable structural response estimates when using ground motion records having a wide range of characteristics. This paper evaluates the robustness of collapse risk estimates of two 4-story structures using the new IM, FIV3, along with several ground motion sets having non– and pulse-like ground motions. Comparisons with the most common IM, the spectral

The fiber reinforced polymer (FRP)-concrete composite bridge deck is expected to be a competitive alternative to the reinforced concrete bridge deck owing to its great durability, low weight, and high loading efficacy. Based on previous studies, an optimized basalt FRP shell (BFRP)–concrete composite bridge deck was investigated experimentally and numerically in this study. Through the construction

This paper aims to study the effects of different parameters of precast concrete double-tee (DT) girder bridges on the live-load distribution factors (LLDFs) using 3D computational models. The models were created for two DT girder bridges (including 584 mm deep and 762 mm deep bridges) tested with a rating truck using solid and shell elements in CSi Bridge. From the field tests, LLDFs were initially

This work investigates the possibility to apply the strain energy density method, as regards blunt V-notches under mixed loading condition, through finite element models with a free mesh pattern. It is worth underlining that the conventional procedure for the application of this method to this kind of components requires two different numerical simulations. A first simulation is needed to define the

Multicell concrete-filled steel tubulars (MCFSTs) have been widely utilized in super-high-rise buildings. Hexagonal six-cell CFST columns have received attention from scholars, and a series of investigations have been conducted. However, investigations on their behavior under lateral cyclic loads are rare. Hence, 8 samples were designed, and an experimental study was conducted under lateral cyclic

Precast columns are widely adopted in Accelerated Bridge Construction (ABC) due to its fast construction speed, environment amity and little interference to existing traffic. The bending behavior of precast columns with grouted sleeve connections under seismic effect has been widely studied. However, studies on the shear behavior of this kind of columns (for example, short columns under seismic effect)

The assessment of the structural health of historical constructions is needed to carry out correct diagnoses and implement proper decision making strategies in the preservation built cultural heritage. In order to provide information about the state of different structural elements of the Monastery of San Jerónimo de Buenavista, in Seville (Spain), an extensive experimental campaign, mainly comprising

Cross-tie solution has proven to be effective in mitigating cable vibrations on cable-stayed bridges. In the formed cable network, the consisting cables are divided into shorter segments by cross-ties and thus significantly reduced their effective length. While bending stiffness plays an important role in the behavior of shorter cables, its effect has not been considered in any existing cable network