摘要
针对传统理论计算方法和物理模型试验技术在分析结构大变形破坏方面的局限性,根据某闸坝汛期滑移破坏情况,结合现场查勘及设计、施工资料建立有限元仿真模型,通过折减破坏部位接触面上抗剪断参数,探索结构真实破坏过程.研究结果表明,当接触面上抗剪断参数取基准值时,结构整体处于弹性变形阶段;当接触面上抗剪断参数折减0.2倍时,结构破坏形式与现场勘测情况基本一致.研究成果可为类似工程设计、施工提供参考.
Aiming at the limitations of traditional theoretical calculation methods and physical model test techniques in analyzing large deformation and damage of the structure,a finite element simulation model was established based on slippage and damage of a dam in the flood season,combined with field survey and design data,and the contact surface of the damage site was reduced set up the shear resistance parameters and explore the real failure process of the structure.The research results show that when the shear resistance parameters on the contact surface are at the reference value,the structure as a whole is in the stage of elastic deformation;when the shear resistance parameters on the contact surface are reduced by 0.2 times,the structure failure form is basically consistent with the site survey.The research results can provide a reference for the next step of the project.
作者
熊威
刘智
王姣
唐少龙
万小强
XIONG Wei;LIU Zhi;WANG Jiao;TANG Shaolong;WAN Xiaoqiang(Jiangxi Institute of Water Sciences,Jiangxi Provincial Research Center on Hydraulic Structures,Nanchang 330029,China)
出处
《江西水利科技》
2020年第2期84-89,共6页
Jiangxi Hydraulic Science & Technology
关键词
滑移破坏
大变形
数值模拟
有限元仿真
Slip failure
Large deformation
Numerical simulation
Finite element simulation
