Case history investigations have shown that pile foundations are more critically damaged in liquefiable soils than non-liquefiable soils.This study examines the differences in seismic response of pile foundations in l...Case history investigations have shown that pile foundations are more critically damaged in liquefiable soils than non-liquefiable soils.This study examines the differences in seismic response of pile foundations in liquefiable and non-liquefiable soils and their sensitivity to numerical model parameters.A two-dimensional finite element(FE)model is developed to simulate the experiment of a single pile foundation centrifuge in liquefiable soil subjected to earthquake motions and is validated against real-world test results.The differences in soil-pile seismic response of liquefiable and non-liquefiable soils are explored.Specifically,the first-order second-moment method(FOSM)is used for sensitivity analysis of the seismic response.The results show significant differences in seismic response for a soil-pile system between liquefiable and non-liquefiable soil.The seismic responses are found to be significantly larger in liquefiable soil than in non-liquefiable soil.Moreover,the pile bending moment was mainly affected by the kinematic effect in liquefiable soil,while the inertial effect was more significant in non-liquefiable soil.The controlling parameters of seismic response were PGA,soil density,and friction angle in liquefiable soil,while the pile bending moment was mainly controlled by PGA,the friction angle of soil,and shear modulus of loose sand in non-liquefiable soil.展开更多
建筑信息模型(Building Information Modeling,BIM)作为工程建筑行业的一项新技术,近年来逐渐应用到地下空间开发的可视化、交互式设计与施工中。构建基于BIM技术的能源地下结构与工程虚拟仿真实验室,将其应用于新兴能源地下结构与工程...建筑信息模型(Building Information Modeling,BIM)作为工程建筑行业的一项新技术,近年来逐渐应用到地下空间开发的可视化、交互式设计与施工中。构建基于BIM技术的能源地下结构与工程虚拟仿真实验室,将其应用于新兴能源地下结构与工程专业分支的实践课程教学,能够满足高等教育新工科建设中的相关培养要求,有助于革新传统教学方式、拓宽学生知识面、提高相关专业人才的综合素质。展开更多
基金National Science Foundation for Excellent Young Scholars of China under Grant No.51722801National Natural Science Foundation of China under Grant Nos.51808006 and 52078016。
文摘Case history investigations have shown that pile foundations are more critically damaged in liquefiable soils than non-liquefiable soils.This study examines the differences in seismic response of pile foundations in liquefiable and non-liquefiable soils and their sensitivity to numerical model parameters.A two-dimensional finite element(FE)model is developed to simulate the experiment of a single pile foundation centrifuge in liquefiable soil subjected to earthquake motions and is validated against real-world test results.The differences in soil-pile seismic response of liquefiable and non-liquefiable soils are explored.Specifically,the first-order second-moment method(FOSM)is used for sensitivity analysis of the seismic response.The results show significant differences in seismic response for a soil-pile system between liquefiable and non-liquefiable soil.The seismic responses are found to be significantly larger in liquefiable soil than in non-liquefiable soil.Moreover,the pile bending moment was mainly affected by the kinematic effect in liquefiable soil,while the inertial effect was more significant in non-liquefiable soil.The controlling parameters of seismic response were PGA,soil density,and friction angle in liquefiable soil,while the pile bending moment was mainly controlled by PGA,the friction angle of soil,and shear modulus of loose sand in non-liquefiable soil.
文摘建筑信息模型(Building Information Modeling,BIM)作为工程建筑行业的一项新技术,近年来逐渐应用到地下空间开发的可视化、交互式设计与施工中。构建基于BIM技术的能源地下结构与工程虚拟仿真实验室,将其应用于新兴能源地下结构与工程专业分支的实践课程教学,能够满足高等教育新工科建设中的相关培养要求,有助于革新传统教学方式、拓宽学生知识面、提高相关专业人才的综合素质。
