河南城建学院学报2025，Vol.34Issue(3)：29-37,87,10.DOI:10.14140/j.cnki.hncjxb.2025.03.005
基于数值分析的活树桩边坡地震响应规律研究
Research on seismic response law of living stump slope based on numerical analysis
摘要
Abstract
Based on the excitation characteristics of Wenchuan seismic wave,MIDAS GTS-NX software was used to construct a three-dimensional finite element model of living stump slope,and the dynamic response law of slope under multi-directional ground motion was systematically revealed by nonlinear time history analysis method.The research shows that:(1)The acceleration amplification coefficient of the living stump slope in-creases nonlinearly with the excitation intensity and slope height,and the horizontal response is significantly higher than the vertical(the horizontal amplification coefficient of XZ bidirectional excitation is 3.555,and the vertical is 1.561).Coupled vibration enhances the X-direction response.(2)The horizontal dynamic displace-ment of the living stump slope increases synchronously with the slope height and the excitation intensity(the horizontal dynamic displacement at the top of slope reaches 3.89 mm when the excitation intensity is 0.35g).The peak value of shear stress under XZ two-way excitation is higher than that in Z direction.The toe of the slope and the weak structural plane are the key instability areas.(3)Living stump effectively inhibit the hori-zontal displacement of the slope top,reduce the increase of slope displacement under high-strength conditions,and significantly improve the seismic stability of the slope.关键词
数值模拟/活树桩边坡/汶川地震波/加速度响应/动位移响应Key words
numerical simulation/living stump slope/Wenchuan seismic wave/acceleration response/dynamic displacement response分类
交通运输引用本文复制引用
沈搏,江学良,杨慧,尹军,高明清..基于数值分析的活树桩边坡地震响应规律研究[J].河南城建学院学报,2025,34(3):29-37,87,10.基金项目
湖南省自然科学基金项目(2022JJ31005) （2022JJ31005）
广州市教育局高校科研项目(2024312379,2024312426) （2024312379,2024312426）
广东省普通高校重点领域专项(2023ZDZX4044,2023ZDZX4045) （2023ZDZX4044,2023ZDZX4045）
广东省重点建设学科科研能力提升项目(2022ZDJS092) （2022ZDJS092）
国家自然科学基金资助项目(31971727) （31971727）
湖南省林业科技创新计划项目(XLK202105-3) （XLK202105-3）
