Article
Engineering, Geological
Ning Wang, Ahmed Elgamal, Jinchi Lu
Summary: This paper utilizes earthquake motion data from the Eureka Channel bridge to evaluate the seismic response of the ground, foundation, and overall bridge. Spatial variation of recorded motions is examined, and Finite Element modeling with optimization software is used to analyze the characteristics of the bridge system and its foundations.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Construction & Building Technology
Juan Manuel Mayoral, Gilberto Mosqueda
Summary: This study aimed to reduce the impact of seismic tunnel-soil-building interaction in high plasticity soft clays through an enhanced foundation system, using three-dimensional finite difference models for seismic analysis and verifying the seismic performance of the enhanced system under a return period of 250 years.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2021)
Article
Engineering, Geological
Aysegul Durmus Demir, Ramazan Livaoglu
Summary: This paper introduces a new analytical procedure using finite element model approach to perform seismic analysis of a bulk solid-silo-embedded foundation/soil system. The procedure not only improves the efficiency in practical design, but also provides a more thorough evaluation of the behavioral aspects of the system. A parametric study was conducted on slender and squat silos with embedded foundations for four different soil types. The research confirms the efficiency and reliability of this new analytical procedure in determining the seismic behavior of silos with embedded foundations.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
Chao He, Shunhua Zhou, Peijun Guo
Summary: This paper proposes an efficient analytical method to mitigate railway-induced vibrations using periodic barriers in a layered half-space. Numerical results demonstrate that the periodic distribution of barriers improves the mitigation efficiency, and increasing the number, size, and stiffness of barriers enhances the effect. The location of barriers and the stiffness of the upper soil layer also significantly affect the performance.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Computer Science, Interdisciplinary Applications
Fady A. Elshazly, Elnaz Seylabi
Summary: This study investigates the seismic behavior of soil- structure systems with a meta-foundation designed using alternate layers of concrete and rubber. The Floquet-Bloch theory was used to derive the frequency band gaps of the meta-foundation. A finite element simulation was proposed to study the isolation performance of meta-foundations on or embedded in soil. The results show considerably enhanced structural performance and improved soil response for the meta-foundation system compared to the non-isolated system.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Engineering, Multidisciplinary
Ayman Abd-Elhamed, Mohamed Tolan
Summary: This study investigates the potential of using a tuned liquid damper (TLD) to reduce seismic responses of structures on soft soil. The inclusion of soil-structure interaction (SSI) increases seismic demand and causes significant changes in building behavior. Additionally, attaching a roof water tank improves the seismic performance of flexible base buildings. The efficiency of TLD in mitigating dynamic responses depends on both the characteristics of the TLD and the supporting soil.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Engineering, Civil
Swagata Deb Roy, Animesh Pandey, Rajib Saha
Summary: The seismic soil-pile foundation-structure interaction (SSPSI) is considered a key factor in seismic design, particularly in soft clay or liquefaction susceptible ground. Experimental study using shake table indicated that SSPSI significantly influences the acceleration response of short period structures, while moderate period structures may experience higher acceleration at pile head due to inertial forces.
Article
Instruments & Instrumentation
Feifei Sun, Xiaoxin Dai, Yue Liu, Lei Xiao
Summary: The novel periodic foundation technology utilizes the filtering characteristics of periodic structures for seismic isolation, showing better attenuation effects. The IAPF-based periodic foundation has advantages in seismic mitigation performance, requiring less resonator mass for reducing structural response.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Engineering, Geological
Onur Araz, Tufan Cakir, Kasif Furkan Ozturk, Dilek Kaya
Summary: This study investigates the optimization of tuned mass damper (TMD) parameters to mitigate dynamic responses in high-rise buildings. The research shows that the optimization of TMD is significantly affected by the embedment depth of the foundation and soil properties.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Construction & Building Technology
Xuming Li, Yekai Chen, Chao Zou, Ying Chen
Summary: The rapid development of public transportation has reduced the distance between railway systems and buildings. As a result, environmental vibration is becoming more of a concern for human health and comfort, as well as vibration-sensitive equipment. To address this issue, a study was conducted to investigate the use of foundation improvement techniques to mitigate building vibration from external sources.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Geological
Fausto Somma, Emilio Bilotta, Alessandro Flora, Giulia M. B. Viggiani
Summary: This paper compares the dynamic response of two models to investigate the effectiveness of lateral disconnection of foundations from the surrounding soil in reducing seismic vulnerability. The experimental results show that the lateral disconnection significantly reduces the foundation stiffness, leading to a larger predominant period of the structure and a reduction in floor accelerations.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2022)
Article
Engineering, Geological
Mojtaba Ansari, Maryam Nazari, Ali Komak Panah
Summary: The study found that using flexible pile caps can reduce the seismic vulnerability and base shear of superstructures, as well as improve the seismic performance of pile foundations.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2021)
Article
Engineering, Civil
Hadi Sabermahany, Reza Attarnejad
Summary: This paper investigates the seismic performance of steel structures supported by a shell foundation and compares it with those supported by a pile-raft foundation. The results show that the shell foundation structures have better performance in terms of maximum displacement, maximum shear force, and inter-story drift.
Article
Engineering, Civil
P. Reumers, G. Lombaert, G. Degrande
Summary: This paper investigates the impact of dynamic soil-structure interaction (SSI), including foundation-soil- foundation interaction (FSFI), on the dynamic response of multi-span railway bridges. The findings show that considering SSI can reduce the peak bridge deck acceleration and resonant train speed.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Bo Liu, Jianfeng Xue, Barry M. Lehane
Summary: Experimental research on soil-structure interaction (SSI) showed that load redistribution in the superstructure depends on the relative structure-soil stiffness and the location of weak and/or rigid foundations. A simple numerical model with appropriate linear elastic springs can provide a reasonable prediction of SSI.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Fei F. Sun, Lei Xiao, Hu Cao
ADVANCES IN STRUCTURAL ENGINEERING
(2018)
Article
Engineering, Civil
Feifei Sun, Lei Xiao, Oreste Salvatore Bursi
ENGINEERING STRUCTURES
(2019)
Article
Engineering, Mechanical
Feifei Sun, Lei Xiao
JOURNAL OF ENGINEERING MECHANICS
(2019)
Article
Engineering, Mechanical
Lei Xiao, Feifei Sun, Oreste Salvatore Bursi
JOURNAL OF ENGINEERING MECHANICS
(2020)
Article
Instruments & Instrumentation
Feifei Sun, Xiaoxin Dai, Yue Liu, Lei Xiao
Summary: The novel periodic foundation technology utilizes the filtering characteristics of periodic structures for seismic isolation, showing better attenuation effects. The IAPF-based periodic foundation has advantages in seismic mitigation performance, requiring less resonator mass for reducing structural response.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Engineering, Civil
Lei Xiao, Qiu-Yun Li, Heng Li, Qiubing Ren
Summary: This study aims to improve the loading capacities of cold-formed steel built-up section columns by optimizing cross-sectional geometric dimensions with constant material consumption. A machine learning model and a genetic algorithm were used to predict compressive strengths and search for optimal results. The proposed optimization framework significantly improved the compressive strengths of the columns and can be applied in the optimum design process.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Geological
Shaohui Liu, Lizhong Jiang, Wangbao Zhou, Jian Yu
Summary: This study evaluates the post-earthquake damage to track-bridge systems by conducting nonlinear time history analysis on a CRTS II ballastless track simply-supported beam system subjected to transverse earthquake loading. It explores the characteristics of residual displacement and stiffness degradation of the track-bridge system under transverse earthquakes. The research investigates the effect of earthquake-induced stiffness degradation on high-speed trains and proposes a reconstruction method for earthquake-induced dynamic irregularity characteristic curve considering probability guarantee rates. The results indicate that earthquake-induced dynamic irregularity can effectively quantify the running performance of high-speed trains under earthquake-induced stiffness degradation conditions.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Rui Zhang, Xiangqian Sheng, Wenliang Fan
Summary: This study introduces a novel approach for the probabilistic assessment of seismic earth pressure against nonlinear backfills. Nonlinear upper bound analysis is used to obtain the seismic earth pressure through optimization procedure, and probability analysis of nonlinear backfill properties is considered by combining adaptive dimension decomposition with the direct integral method.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Qiangqiang Sun, Yu Xue, Menghao Hou
Summary: This study investigated the use of Tire-derived aggregate (TDA) as backfill material for geotechnical seismic isolation in utility tunnels. Nonlinear numerical analyses were conducted, and the results showed that TDA backfill was an excellent alternative for risk mitigation during strong earthquakes, significantly reducing deformation and forces. The proposed system could potentially save costs compared to expensive seismic mitigation measures.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Yan-Guo Zhou, Dong-Chao Zhang, Kai Liu, Yun-Min Chen
Summary: This study investigated the large deformations caused by liquefaction in sloping ground and the methods for evaluation and mitigation. Soil element tests and centrifuge model tests were conducted to study the relationship between residual strain and Post-liquefaction Deformation Potential (PLDP). The tests showed that the developments of residual strain were controlled by PLDP, which is correlated with the maximum cyclic shear strain. The applicability of PLDP was verified in model tests, and the mitigation mechanisms of densification and drainage induced by stone columns were observed.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jiajin Zhao, Zhehao Zhu, Dexuan Zhang, Hao Wang, Xi Li
Summary: This paper studies the fabric properties during sand liquefaction using 3D constant-volume cyclic triaxial DEM tests. The results show good consistency with experimental data. The evolution of fabric characteristics is assessed using the coordination number and mechanical coordination number. The second-order contact normal fabric tensor is introduced to analyze complex inter-particle contacts and the shear strain is used as a bridge to describe the evolution of coordination number and anisotropy degree.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jinqiang Li, Zilan Zhong, Shurui Wang, Kaiming Bi, Hong Hao
Summary: The corrosion-protection liner technology improves the seismic performance of water supply pipelines and reduces the failure probability under earthquake excitations.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Abdellah Cherif Taiba, Youcef Mahmoudi, Mostefa Belkhatir
Summary: This article provides a comprehensive analysis of Liu et al.'s (2023) published paper in the Soil Dynamics and Earthquake Engineering journal, which examines the impact of particle shape on the wave velocity of sand. By enhancing the content integrity, this article serves as a valuable discussion piece for readers interested in this research topic.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Weijian Zhong, Binbin Li, Yanhui Liu, Ping Tan, Fulin Zhou
Summary: In this paper, the Flexible Limit Protective Device (FLPD) was improved to a Flexible Energy Dissipating Device (FEDD) to better control the seismic response of base-isolated structures. Experimental investigation and numerical simulation were conducted to study the compression behavior and optimize the design of FEDDs. The results showed that FEDDs with optimal parameters effectively reduced isolator displacements and kept the inter-story drift angle within a safe range during earthquakes.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Xinhua Xue, Xiaojie Yuan, Li Tao
Summary: In this study, gene expression programming (GEP) was used to establish the relationship between the capacity energy required to trigger sand liquefaction and several major parameters. The GEP model showed higher accuracy and better performance compared to existing models, as confirmed by experimental data.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Xiao-ling Zhang, Hao Lan, Xian-hui Zhao, Cheng-shun Xu, Ke-min Jia
Summary: The study investigates the reinforcement principle of inclined liquefiable site using concrete pile and gravel pile methods. The results show that concrete piles have a better reinforcement effect on inclined liquefiable site compared to gravel piles, and increasing the diameter of gravel piles greatly improves the reinforcement effect. The pile group reinforcement model is more effective in reducing lateral displacement of the site soil compared to the single pile reinforcement model.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jinxin Sun, Haoyu Sun, Mengmeng Lu, Bolin Han
Summary: The implementation of stone columns is an effective way to improve the stability of liquefiable soil. However, existing mathematical models often neglect vertical seepage within the soil, leading to calculation errors. This study proposes a new mathematical model that considers both radial and vertical seepage, and conducts a parameter analysis to investigate the effects of column spacing, cyclic stress ratio, and consolidation parameters on excess pore water pressure.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jonathan F. Hubler, James P. Hanley, Andrew C. Stolte, Liam Wotherspoon, Kyle M. Rollins
Summary: This study performed blast liquefaction tests in an area that experienced extensive liquefaction. It used multi-channel analysis of surface waves (MASW) testing to evaluate changes in shear wave velocity (VS) before and after blasting. The study found that array length has an impact on the immediate changes in VS following blasting, but these changes decrease at 24 hours post-blast.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Lowell Tan Cabangon, Gaetano Elia, Mohamed Rouainia, Suraparb Keawsawasvong, Teraphan Ornthammarath
Summary: The impact of far-field earthquakes on underground structures, especially tunnels, has been relatively less explored compared to near-field earthquakes. However, the study found that far-field earthquakes can generate forces in tunnel lining that are equally destructive as those induced by near-field motions, especially when they contain long-period waves. The amplification of these ground motions in soft natural clays, common in Bangkok, can lead to significant soil displacements and shear strains.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jinjun Hu, Longbing Ding, Xutong Zhou, Mingji Liu, Jingyang Tan
Summary: Offshore near-fault ground motions during the 2016 OffMie Mw6.0 earthquake in the Nankai Trough of Japan were studied using data from the DONET1 seafloor seismic network. The results show that offshore spectral acceleration and peak ground velocity are higher than onshore values. Analysis of pulse-like ground motions reveals differences in amplitude, frequency content, and energy between offshore and onshore motions. These findings have implications for seismic design of offshore engineering structures.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Radu Popescu, Pradipta Chakrabortty
Summary: The natural spatial variability of soil properties affects the mechanical response of geotechnical structures and can deviate failure surfaces. For soil liquefaction induced by seismic activity, it has been found that greater excess pore water pressure is generated in soils with small-scale variability. This paper provides an explanation based on centrifuge experiments and numerical simulations, showing that partial drainage during earthquakes may trigger softening of dilative soils.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
