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Discrete element study of the effect of particle shape on critical state characteristics and constitutive parameters of sand Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-15 Xiaoli Wang, Chengshun Xu, Xiaoling Zhang
Based on the discrete element particle flow software PFC, four irregular particles with the same aspect ratio, convexity, and sphericity as the binary pictures are constructed. To examine the influence mechanisms of particle shape on mechanical properties, microstructure, and critical characteristics, an index characterizing the regularity of the particle shape is introduced. By examining the link
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Nonlinear seismic response of seabed with terrain variation and seawater-seabed coupling Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-14 Weiyun Chen, Jinyi Lin, Yewei Zheng, Lei Su, Guoxing Chen, Linchong Huang
Understanding the seismic characteristics of submarine sites and conducting seismic response analysis for such locations are crucial for the safety of marine engineering. However, due to a shortage of strong motion records, the ground motion of offshore earthquakes has not yet been fully characterized. The actual seabed conditions are highly intricate, necessitating consideration of factors such as
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Excess pore water pressure generation in poorly graded sands with varying particle shapes and relative densities Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-13 Min-Chien Chu, Chi-Chin Tsai, Louis Ge
In this study, a series of cyclic triaxial tests were conducted on two poorly graded sands with different particle shapes. The experimental results were integrated with test results reported in the literature to construct a comprehensive database for investigating the effects of particle shape and relative density on excess pore water pressure (EPWP) generation. The sand types in the database were
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Comparative analysis of two intergranular strain-based hypoplastic models through elemental and centrifuge testing Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-13 C. Lascarro, M. Tafili, W. Fuentes, J. Duque
While hypoplastic models have demonstrated accurate predictions of sand behavior under monotonic loading, their accuracy diminishes when applied to cyclic loading conditions. To address this limitation, the intergranular strain approach is used as an extension to the model. The current investigation focuses on the analysis of two variants: the original Intergranular Strain (IS) approach proposed by
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Numerical seismic performance assessment and fragility analysis for gravity-type wharves considering the influence of soil liquefaction Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-12 Yung-Yen Ko, Ho-Hsiung Yang, Chi-Wen Hu, Yan-Jhih Huang, Yu-Ying Lin
The gravity-type wharf is generally more vulnerable during earthquakes due to its massive gravity quay wall, especially when located in a liquefiable area. Therefore, this study aims to develop numerical analysis procedure for its seismic performance assessment and fragility analysis considering the influence of soil liquefaction. Firstly, the quantitative damage criteria for gravity-type wharves were
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Analysis of influencing factors of penetration mechanism and vertical bearing characteristics of monopile in calcareous sand: Laboratory model testing and in-situ testing Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-09 Haoran OuYang, Guoliang Dai, Weiming Gong
The construction of islands and reef engineering structures in marine environments has been a hot topic in recent years, and calcareous sand, which possesses unique physical properties, is widely distributed on islands and reefs. Due to the properties of calcareous sand, engineering problems such as pile slipping while driving and a low bearing capacity during service can occur. To address the key
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Influence of the anchor angle on the seismic response of anchored stabilizing piles: Centrifuge modeling tests Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-08 Yu Wang, Tong Zheng, Rui Sun, Zhiliang Sun, Zhinan Xie, Zhendong Shan, Hongshuai Liu, Wenhao Qi, Yu Bai
Anchored stabilizing piles (ASPs) are widely used as excavation support systems in slope anti-seismic reinforcement engineering. In this study, a set of centrifuge contrast tests were designed and used to explore the influence of the anchor angle on the seismic response of the system to further deepen the research on the seismic response of ASPs. To this end, the effects of two anchor cable arrangement
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Experimental and numerical investigations of steel U-shaped dampers under vertical loadings for seismic mitigation Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-07 Chao Zhang, Tianhao Yu, Bin Wang, Weiyuan Huang, Genquan Zhong, Feng Zhao
Steel U-shaped dampers (UDs) are one of the earliest types of metallic energy dissipation devices. Previous studies have been conducted in past years to investigate the hysteretic behavior of steel UDs under in-plane and out-of-plane loadings. However, little attention has been paid to the working mechanism of the steel UDs under vertical loadings. The latter also has a wide range of application scenarios
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Isolation performance evaluation of base-isolated system with active nonlinear negative stiffness devices Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-06 Yafei Zhang, Yuchen Hu, Ning Li, Lili Xie, Zhe Wang, Dewen Liu
This paper introduces a control method utilizing an active nonlinear negative stiffness device (ANNSD) to mitigate excessive displacement of isolation layers in base-isolated structures (BIS). The proposed approach, based on linear quadratic regulation (LQR), effectively controls the displacement of the isolation layers and enhances the seismic performance of the structure. To address the nonlinear
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Investigation of industrial structure performances in the Hatay and Gaziantep provinces during the Türkiye earthquakes on February 6, 2023 Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-04 Sezer Öztürk, Elif Altunsu, Onur Güneş, Ali Sarı
The seismic events of magnitudes 7.7 and 7.6 that occurred in the Pazarcik and Elbistan districts of Kahramanmaras, respectively, resulted in a disastrous aftermath characterized by a substantial loss of life, injuries affecting a multitude of individuals, and extensive structural failures. The present investigation encompasses the comprehensive assessments carried out by research team pertaining to
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The influence of seabed on offshore ground motion Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-04 Baokui Chen, Bowei Wang, Sicong Hu, Kaiming Bi
The characteristics between offshore and onshore ground motions are different based on the complex geological structure of the seabed. But the influence of seabed topography on the characteristics of offshore ground motions is less studied. Therefore, in order to analyze the influence of site conditions, local site topography and other factors on the characteristics of offshore ground motion, a numerical
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Corrigendum to “Experimental and numerical study on seismic performance of prefabricated new fly ash foam concrete structure” [Soil Dynam. Earthq. Eng. 178 (2024)108462] Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-02 Hongze Wang, Yunhong Hao, Lida Qin, Hao Sun, Yupeng Zhao, kelehan Cha
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Analytical solution of seismic response for tunnel covered by an isolation layer under longitudinally propagating shear waves Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-02 Lihui Xu, Mi Zhao, Jingqi Huang, Huifang Li, Xiuli Du, Xu Zhao, Shengtao Cao
Evaluating the impact of the isolation layer on the tunnel’s response is crucial in the practical engineering. An analytical solution for the longitudinal seismic response of a tunnel covered by an isolation layer is first proposed in this study based on an improved elastic foundation beam model. Wherein, an equivalent beam model for the tunnel-isolation layer system is built. The tangential interaction
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Near-surface secondary ruptures caused by oblique main faults and distress of intersecting pipelines Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-02 Dionysios Chatzidakis, Nikolaos Makrakis, Prodromos N. Psarropoulos, Yiannis Tsompanakis
Fault rupture propagation through near-surface soil deposits and the anticipated damage on adjacent structures have been thoroughly investigated focusing on single fault rupture. Nevertheless, large secondary faults have also been observed in field investigations. For this reason, the development of contemporaneous fault ruptures -and the resulting soil displacements-caused by complex combinations
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A multi-index fusion prediction method for dynamic seismic damage of an arch dam Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-01 Lijun Qin, Jianyun Chen, Qiang Xu, Xiangyu Cao, Jing Li
To establish the correlation between monitoring indexes and damage indexes for the purpose of rapid assessment of dam damage, this paper takes the Baihetan arch dam as an example and establishes a three-dimensional finite element model for dynamic analysis. Focusing on the crown cantilever, the study analyzes the correlation between different monitoring indexes and damage indexes using DCCA correlation
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A semi-analytical solution to incident plane P waves scattering by saturated river valley with arbitrary shapes containing water Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-03-01 Liguo Jin, Xueliang Duan, Zhenghua Zhou, Bengang Zhou, Su Chen, Xiaojun Li
River valley terrain can lead to local amplification effects of site seismic responses and significant spatial variation of strong ground motions. This paper presented a semi-analytical solution for the scattering of incident plane P-waves by a saturated river valley with arbitrary shapes containing water, using the moment method and the wave function expansion method. The influence of factors such
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Simplified and rapid prediction of earthquake-induced track dynamic irregularity of high-speed railway bridges under different site conditions Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-28 Wangbao Zhou, Zhenbin Ren, Shaohui Liu, Jiang Lizhong, Yu Jian, Peng Kang, Xiao Jun
Rail transportation, as a critical component of social development, plays a pivotal role during earthquake relief efforts. To ensure the safety and comfort of post-earthquake travel, it is essential to accurately predict the earthquake-induced dynamic irregularities of the track. In this study, 120 seismic waves are chosen from the PEER strong earthquake database based on various site classifications
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Seismic performance investigation on self-centering friction frames: Collapse capacity and post-earthquake recovery Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-27 Xiao Lu, Boyang Liu, Weihao Sun, Longhe Xu
Self-centering technology is a promising approach to enhance seismic resilience of frame structures. Despite extensive experimental and theoretical research on various self-centering components, there has been relatively limited quantitative study on the collapse and post-earthquake recovery capabilities of self-centering frame structures. Therefore, this paper introduces a self-centering friction
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On the optimization of Tuned Mass Damper Inerter (TMDI) systems for buildings subjected to real ground motions using slime mould algorithm Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-26 Amiya Pandit, Ramin Ghiasi, Abdollah Malekjafarian
This paper proposes a novel optimization framework for the optimal design of Tuned Mass Damper Inerter (TMDI) devices to mitigate the excess vibration of multi degree of freedom (MDOF) buildings under earthquake ground motions. Minimizing the H- norm of the top floor displacement transfer functions is considered as the objective function for the optimization process. A Tuned Mass Damper Inerter (TMDI)
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Initiation mechanism of shallow loess slope sliding under coupling effect of train vibration and rainfall Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-26 Kai Han, Jiading Wang, Shan Li, Peng Xiao, Dengfei Zhang, Fei Wang, Haoyu Dong
The large-scale construction and operation of the railway in Northwestern China has resulted in some geological disasters in recent times. Among them, the shallow sliding of the loess railway slope caused by the coupling effect of train vibration and rainfall has been a frequent occurrence, causing heavy losses of life and property. Accordingly, this is a major problem an needs an urgent solution.
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A semi-analytical method for stress-strain analysis of tunnels under dip-slip faulting based on an elastic-plastic foundation beam model Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-26 Mingnian Wang, Xiao Zhang, Li Yu, Henghong Yang
Tunnels under faulting will be seriously damaged, and an accurate analytical method is an effective tool for tunnel response assessment in preliminary design. A series of mechanical analytical methods have been developed for tunnels under faulting. However, some unrealistic assumptions are still employed in the analytical method for tunnels under dip-slip faulting, including tunnel segmentation, constant
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Liquefaction resistance of anisotropically consolidated sand under monotonic and cyclic undrained torsional shear Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-26 Futang Zhao, Zhijian Qiu, Kun Pan, Yewei Zheng, Qixin Wu
The stress-induced anisotropy of sand significantly affects the liquefaction susceptibility. This study systematically investigates the undrained behavior of saturated sand under both monotonic and cyclic loading through a series of torsional shear tests, considering the effects of initial anisotropic consolidation states, including extensional and compressional consolidation states. Special attention
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Improved response spectrum analysis procedure for an adaptive variable friction pendulum isolated structure considering frictional dependency Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-26 Kui Yang, Ping Tan, Jiying Shang, Huating Chen, Jiaxi Li, Yue Xiang, Yafeng Li
The effectiveness of the conventional friction pendulum isolator (FPI) is limited in complex geographical environments and unpredictable earthquake events due to its complex frictional properties and the requirement for a unified setup target. With a view to addressing the aforementioned issues, in conjunction with an adaptive variable friction pendulum isolator (AVFPI), a simple and practical mechanical
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Post-earthquake safety assessment of schools after the 2016 Ecuador M7.8 earthquake Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-25 Julian Carrillo, Carlos A. Arteta, Xavier Vera
The 2016 Muisne earthquake generated significant structural damage especially along the coast of Ecuador. Tests of concrete and reinforcing bars taken from collapsed buildings aided at assessing the impact of materials properties on the behavior of buildings. The paper describes the statistics of damage sustained by schools following the ATC-20 scheme. A set of statistics are developed describing the
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Uncertainty and sensitivity assessments on the inputs of probabilistic seismic hazard assessment: A case study of the North Tehran fault Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-24 Milad Kowsari, Nasrollah Eftekhari, Ehsan Yousefi Dadras
Probabilistic seismic hazard analysis (PSHA) often incorporates significant uncertainty in its inputs, which have the potential to substantially affect the estimated hazards. To improve the reliability of seismic hazards, the present work examines how these uncertainties impact the variability of PSHA and disaggregation results. For this purpose, uncertainty and sensitivity analyses have been performed
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The multi-degree-of-freedom response spectrum in earthquake engineering Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-23 George A. Papagiannopoulos
This paper establishes the concept of the multi-degree-of-freedom (MDOF) response spectrum as a means for the rapid determination of the peak response of a building structure. The MDOF response spectrum is constructed using the peak response results derived by linear modal analyses, it is specific per type of structure and it retains the usual representation characteristics of its single-degree-of-freedom
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High-speed railway-induced ground and building vibration: Numerical validation of a spectral element analysis-based sub-model method Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-23 Duo Feng, Roberto Paolucci, Ilario Mazzieri, Linrong Xu, Yu Cai
This paper proposes a spectral element method-based analysis procedure to study further the low-frequency responses of the ground and building induced by high-speed railways. Based on an existing scale model building test in Portugal, the properties of the track–ground submodel are calibrated to determine the moving perturbation on the ground surface. In modeling the soil–structure coupled subsystem
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Seismic performance evaluation of a metro station structure under multi-source random conditions based on probability density evolution method Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-22 Zhi-Qian Liu, Zhi-Yi Chen, Yu Huang, Yi-Fan Fan
Ground motion, geotechnical materials, and structural materials are three primary uncertainty sources in the seismic design and assessment of metro station structures. However, the effects of the latter two have often been ignored, which brings doubts about the rationality of the design and evaluation results. In this paper, based on the probability density evolution theory, the non-linear stochastic
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Advanced seismic retrofitting with high-mass-ratio Tuned Mass Dampers Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-22 Pasquale Roberto Marrazzo, Rosario Montuori, Elide Nastri, Gianmario Benzoni
Tuned Mass Dampers (TMDs) are traditionally employed in tall buildings to control displacements, typically featuring a low mass ratio. This study explores the potential of TMDs with significantly higher mass ratios for seismic retrofitting in existing civil structures, an area that remains largely unexplored. The research investigates non-conventional TMDs with exceptionally high mass ratios, which
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Development, verification, and simulation analysis of variable friction self-centering energy dissipative brace Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-21 Lihua Zhu, Tong Liu, Zijie Li, Yao-Rong Dong, Jinwu Luo
The variable friction self-centering energy dissipative (VF-SCED) device is proposed to solve the challenge for the developed SCED braces on the weak energy dissipative capacity or too complex energy dissipative system, and the conflict between the self-centering ability and energy dissipative ability. The composition and working principle of the VF-SCED brace are described, the theoretical equation
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Development of an in-situ shaker for evaluating railway earthworks Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-21 Pengju Lyu, Qiang Luo, Guishuai Feng, David P. Connolly, Kaiwen Liu, Tengfei Wang
The geotechnical and geodynamic characteristics of railway earthworks under train loading are important quantities for railway and geotechnical engineers, but difficult to quantify. Characterizing the anticipated settlement and dynamic properties of compacted fills after earthwork construction, but before track laying, is advantageous, because modifying construction after laying the track is significantly
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Probabilistic sensitivity matrices under stressor uncertainty Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-21 Mohammad Amin Hariri-Ardebili, Christopher L. Segura Jr., Siamak Sattar
Quantitative risk analysis critically relies on precise numerical simulations to furnish optimal estimations. These numerical models encompass complex constitutive material correlations, multi-fidelity assumptions within model generation, and the encompassing variability of applied loading conditions. Traditional sensitivity analysis methodologies, being contingent upon the specific stressors applied
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Enhancing and evaluating the seismic resilience of steel frame structures based on the stiffness-flexibility indicator Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-20 Yinzhen Chen, Mingming Jia, Dagang Lu
The dynamic characteristics of buildings inherently exhibit significant variations. However, there is currently limited research focusing on assessing the inherent differences in building characteristics for seismic resilience and developing strategies to enhance seismic resilience in response to these variations. The Stiffness-Flexibility Indicator (SFI), determined by structural height and fundamental
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Application and long-term effects of vibration reduction in CRTSIII slab track: Insights from field measurements Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-20 Qihao Wang, Xiaopei Cai, Xueyang Tang, Qian Zhang, Yuqi Wang
Vibration issues at high-speed railway stations have emerged as a significant concern in China. In order to comprehend and regulate the vibrations induced by trains, extensive field experiments were conducted and then analyzed using the Smoothed Pseudo Wigner-Ville Distribution (SPWVD) method at Xiong'an high-speed railway station. Additionally, a specialized Vibration Reduction Track (VRT) design
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Corrigendum to ‘Life-cycle seismic fragility and resilience assessment of aging bridges using the endurance time method’. [Soil Dynam Earthq Eng 164 (2023) 107524] Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-20 Javid Ashrafifar, Homayoon Estekanchi
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Failure and deformation mode for soil and tunnel structure crossing multiple slip surfaces of strike-slip fault in model test Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-19 Xi Zhang, Yusheng Shen, Jutao Qiu, Mingyu Chang, Pengfa Zhou, Haifeng Huang, Penglin Zhu
Relying on the tunnel engineering crossing large active fault fracture zone in high intensity seismic area in Western China, a large-scale model test of tunnel through multiple slip surfaces under strike slip motion was carried out. The deformation patterns and damage characteristics of tunnel structure and surrounding rock were studied based on displacement, strain and internal force response, as
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Site amplification model for Croatia estimated by random vibration theory-based site response analysis Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-19 Davor Stanko, Snježana Markušić
This study presents a first developed site amplification model for Croatia using random vibration theory (RVT)-based site response analysis and measured shear wave velocity (Vs) profiles for different site parameters (V – average shear wave velocity in the top 30 m, fundamental site frequency/period; H – depth to the bedrock layer with reference to shear wave velocity V = 800 m/s). The impedance between
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Improvement of the seismic resilience of regional buildings: A multi-objective prediction model for earthquake early warning Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-16 Huiwei Wang, Longhe Xu, Xingsi Xie, Ge Zhang
Earthquake early warning is one of the methods by which to improve structural resilience. However, uniform earthquake warning information is not highly targeted for regional buildings. Therefore, this work proposes a multi-objective earthquake warning process to provide more targeted earthquake avoidance measures for regional buildings. A multi-objective prediction model based on long short-term memory
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Modeling cyclic liquefaction and system response of a sheet-pile supported liquefiable deposit: Insights from LEAP-2022 Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-16 Sheng Zeng, Andrés Reyes, Mahdi Taiebat
This study presents numerical simulations of 13 prototype-scale centrifuge tests from the LEAP-2022 project, employing the SANISAND-MSf plasticity model. Calibrated based on data from 56 cyclic direct simple shear tests, the objective was to evaluate the model’s ability to capture cyclic liquefaction-related phenomena comprehensively. The adopted calibration strategy balanced the considerations for
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State-based assessment of cyclic liquefaction manifestation Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-16 Jorge Macedo, Luis Vergaray
This study assesses the robustness of a framework based on critical state soil mechanics (CSSM) principles in evaluating earthquake-induced liquefaction manifestation. The assessment is motivated by the contrasting procedures in evaluating static and cyclic liquefaction, where mechanical properties commonly inform the former, whereas the latter often relies on semiempirical-based methods. The framework
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Role of initial static shear on the cyclic response of saturated backfill retained by a sheet-pile wall: Insights from the strain space multiple mechanism model Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-15 Anurag Sahare, GyuChan Choi, Kyohei Ueda
One of the major challenges for a numerical modeler/practitioner designing a sheet-pile retaining structure shoring waterfront regions under dynamic loading is to reasonably capture its seismic response solely on appropriate soil constitutive model calibration. This is particularly important as the numerical modelers usually do not have access to the dynamic centrifuge testing or large-scale 1G experimental
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Investigation of multi-mode seismic performance of tall hollow piers with two-node loading quasi-static test Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-15 Xingji Lu, Hao Lu, Jianzhong Li
The conventional single-node loading cyclic quasi-static test is commonly applied to investigate the seismic performance of the bridge piers where the mass of the pier itself can be ignored. However, for the tall bridge piers, the mass of the pier is comparable to that of the girder, and the conventional test fails to consider the contributions from the higher modes of the pier. To address this issue
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Nonlinear energy sink response of a cylindrical storage tank under earthquake loads Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-15 Buris Peggy Ndemanou, Ahoudou Ngamie Ndoukouo, Jules Metsebo, Guy Richard Kol
The effectiveness of the non-linear energy sink (NES) for the seismic mitigation of slender and broad storage liquid tanks is investigated. The NES system is used as a supplemental energy dissipation device. It is composed of two springs (non-linear and linear), and two dashpots connected to a mass. The degree-of-freedom (DOF) approach is used to model the dynamic response of the tank. The nonstationary
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Kinematic interaction analysis of individual soil-pile model within multi-block system Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-15 Mehmet Ömer TİMURAĞAOĞLU
The influence of single and multi-block structural system on the response of piles in layered soil profiles is investigated in this study. The dynamic soil pile interaction analyses are carried out in three consecutive steps for single/separate and multi-block/complete models. In the first step, 1-dimensional and 3-dimensional linear site response analyses are performed to calibrate the soil domain
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Generalized Rankine solutions for seismic earth pressures: Validity, limitations & refinements Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-13 Panos Kloukinas, George Mylonakis
The conditions giving rise to a uniform Rankine stress field involving straight stress characteristics in the soil behind a gravity retaining wall under pseudo-dynamic loading, are revisited. Considering combined gravitational and seismic body forces, exact closed-form solutions are derived for: (1) the coefficients of active and passive earth pressures, (2) the critical values of the five governing
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Traction-based implementation of transmitting boundaries for nonlinear seismic Soil–Structure interaction analyses Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-13 Che-Yu Chang, Wen-Chia Yang, Chen-Hsiang Kuo
This paper introduces a straightforward traction-based approach for implementing transmitting boundaries in time-domain nonlinear seismic soil–structure interaction (SSI) analyses. The primary objective is to simplify the challenges associated with integrating appropriate boundaries into finite-element analysis software. The proposed method conceptualizes an SSI model as a free body extracted from
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Performance parameter design of seismic isolation bearings for high-speed railway simply-supported bridges using neural network Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-12 Wei Guo, Yongkang He, Yanxia Zhu, Yao Hu
In the simply-supported bridge system for the high-speed railway with unequal pier heights, the intrinsic relationship between the seismic isolation bearing parameters and the seismic performance objectives of the bridge is very complex. It is not easy to establish a precise mathematical model, and the design process of the bearings relies heavily on the experience of the designers. This paper uses
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Seismic behavior of irregular underground structures in saturated sand Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-12 Baizan Tang, Bingyan Yu, Haiyang Zhuang, Xiaojun Li, Dawei Huang, Wei Wan
Sand liquefaction is one of the leading causes of severe earthquake damage. In this study, shaking table tests were carried out to investigate the dynamic interaction between the saturated sand and the irregular subway stations. In this test, a method for the preparation of a liquefiable foundation based on a flexible sensing chain combined with water sedimentation was proposed. Typical test results
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Liquefaction mitigation using sodium polyacrylate: Large-scale in-situ applications with a unique grouting apparatus Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-10 Burak Evirgen, Nesil Özbakan, Asker Alp Gültekin, Mert Tos, Mustafa Tuncan
Soil liquefaction is an important problem that threatens the safety of buildings during earthquakes due to its destructive effects caused by a serious decrease in soil strength. In addition to the existing soil improvement methods, a reasonable approach to tackle this problem could be a superabsorbent polymer called sodium polyacrylate (SPA), which has a 125 ml/gr water absorption capacity as well
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Characterization of free-field seismic motions for soil-structure interaction analysis of nuclear structures using enhanced transfer functions Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-10 Yeudy F. Vargas-Alzate, Alex H. Barbat, Lluis G. Pujades, Luis A. Pinzón, Jose M. Gonzalez, Junior Ramirez, Fernando Rastellini
Soil-structure interaction is a key aspect when calculating the dynamic response of nuclear structures in front of ground motions induced by earthquakes. However, modelling the seismic response in the time-domain using FEM-based models to represent the soil volume is computationally expensive because of the large number of elements involved. For this reason, it is a common practice to employ 1-D models
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A ground motion intensity measure based on different spectral-shape types to predict nonlinear structural response in steel buildings Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-10 Victor Baca, Federico Valenzuela-Beltrán, Robespierre Chávez, Edén Bojórquez, Alfredo Reyes-Salazar, Juan Bojórquez
The selection of an appropriate intensity measure to assess the seismic performance in steel buildings is an important step to reduce uncertainty in the structural response. Hence, in this study, a scalar ground motion intensity measure able to increase the efficiency in the prediction of nonlinear behavior effects of steel structures subjected to earthquake ground motions named the generalized intensity
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Two-dimensional nonlinear dynamic analysis of a liquefaction case history considering spatial variability and long-duration megathrust earthquakes Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-09 Hector Saldaña-Sotelo, Gonzalo Montalva, Daniella Escribano, Sebastián Núñez-Jara, Juan Carlos Tiznado
We analyzed the unusual liquefaction response of the Los Presidentes site in Concepción, Chile, during the 2010 Mw 8.8 Maule earthquake, using a series of two-dimensional nonlinear dynamic analyses (NDAs) on a well characterized subsurface. This site, characterized by interbedded clean and silty sands followed by a dense sand unit, included four identical towers that experienced different settlements
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Hysteretic model parameters for seismic performance assessment of cyclically degraded reinforced concrete columns Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-08 Yewon Park, Chang Seok Lee, Jong-Su Jeon
This study proposes integrated hysteretic model parameters of a lumped plasticity model for the nonlinear load–deformation response of reinforced concrete columns regardless of their failure mode and cross-sectional shape. To do this, hysteretic model parameters were calibrated using an experimental database of 358 rectangular and 289 circular column specimens exhibiting flexure, flexure-shear, and
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Experimental study on cyclic triaxial behaviors of saturated soft soil considering time intermittent and variable confining pressure Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-08 Jiaqiang Yang, Zhen-Dong Cui, Banglu Xi, Weilong Song
The railway foundation is subjected to periodic loads and time intervals during operation. Previous tests on permanent deformation of soft soil by applying the continuous cyclic loading under undrained or drained conditions cannot fully reflect the actual situation. To evaluate the cyclic triaxial behaviors of saturated soil under more realistic loading conditions, a series of bidirectional cyclic
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A geostatistical modelling of empirical amplification functions and related site proxies for shaking scenarios in central Italy Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-06 Sara Sgobba, Chiara Felicetta, Teresa Bortolotti, Alessandra Menafoglio, Giovanni Lanzano, Francesca Pacor
This work aims at identifying and modelling statistical dependencies between empirical amplification functions of sites in central Italy and the main geological and geophysical characteristics of the region, within a geostatistical analysis framework. The empirical functions, named δS2S, are estimated by decomposing the residuals of the median predictions of a non-ergodic ground motion model of elastic
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Dual-objective control of braced steel frame using asynchronized parallel two-stage yielding BRB Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-06 Cantian Yang, Linlin Xie, Qiang Liu, Aiqun Li, Qianmin Liu, Xinyu Wang
A novel buckling restrained brace (BRB), called the asynchronized parallel two-stage yielding buckling restrained brace (APTYBRB), is proposed to achieve dual-objective control of the maximum inter-story drift ratio (MIDR) and damage concentration effect (DCE) of braced steel frame structures. The APTYBRB features asynchronized two-stage working and yielding mechanisms. First, the feasibility, seismic
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Dynamic centrifuge modeling to investigate the deformation mechanism of an embedded cantilever retaining wall with submerged backfill conditions Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-06 Anurag Sahare, Kyohei Ueda
During previous medium intensity earthquakes, several cantilevered retaining structures shoring waterfront areas experienced large deformations or even collapsed. This was in contrary to the caisson type quay walls which performed better even during the very strong 1995 Kobe earthquake. Within this realm, recent studies have highlighted that saturated backfill adjacent to retaining structures may not
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Experimental and numerical study on the seismic performance of barbell-shaped shear walls with partial application of UHPC Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-06 Yi Ding, Zhen Zhou, Yang Wei, Mingwen Xu
A new type of barbell-shaped shear wall was presented in this paper, where ultra-high performance concrete (UHPC) was partially cast into the potential plastic hinge region of the end column and normal-strength concrete (NSC) was cast into the web region and the upper part of the end column. Low cycle repeated loading tests were conducted on four shear walls with an aspect ratio of 2. The influence
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Nonlinear ground acceleration tracking mechanism for seismic control of high-rise buildings considering soil-structure interaction Soil Dyn. Earthq. Eng. (IF 4.0) Pub Date : 2024-02-06 Afshin Bahrami Rad, Javad Katebi, Saman Yaghmaei-Sabegh
In this paper, a novel two-step nonlinear ground acceleration feedback mechanism is proposed for vibration mitigation of building structures considering soil-structure interaction. Hence, an observer based receding horizon control (RHC) scheme is presented for active control of the structures. Afterward, a nonlinear two-step auto-regressive framework is appended to the RHC formulations to consider