水力发电2025，Vol.51Issue(6)：55-60,6.
湿陷性黄土地区涵洞数值模拟及敏感性分析
Numerical Simulation and Sensitivity Analysis of Culvert in Collapsible Loess Area
摘要
Abstract
Collapsible loess is widely distributed in the northern region of China.The bearing capacity of collapsible loess is greatly reduced after the water body is wetted,which seriously affects the normal use of structures.Taking a water conservancy project in Henan Province as an example,a three-dimensional finite element model of foundation and culvert is established to investigate the stress and deformation law of underground culvert,in which,the wet subsidence range and wet subsidence grade are taken as variables to divide different working conditions.A sensitivity analysis is also carried out on the wet subsidence range and the wet subsidence grade.The results show that the collapsible loess has great influence on the stress and displacement of underground culvert,the maximal tensile stress exceeds the ultimate tensile strength of concrete,and the effect of wet subsidence range on the maximum tensile stress is greater than that of wet subsidence grade.关键词
湿陷性黄土/涵洞/数值模拟/应力变形/敏感性分析Key words
collapsible loess/culvert/numerical simulation/stress deformation/sensitivity analysis分类
水利科学引用本文复制引用
李东泽,赵亮,徐力群,许林军,靳文超..湿陷性黄土地区涵洞数值模拟及敏感性分析[J].水力发电,2025,51(6):55-60,6.基金项目
国家重点研发计划(2019YFC1510802) （2019YFC1510802）
