防灾减灾工程学报2025，Vol.45Issue(5)：1062-1073,12.DOI:10.13409/j.cnki.jdpme.20250110004
边坡-管道相互作用物质点法数值模拟研究
Numerical Simulation Study of Slope-pipe Interaction Using Material Point Method
摘要
Abstract
Based on the material point method(MPM),numerical simulations were conducted to inves-tigate the interaction between slopes and buried pipes.The effects of factors such as pipe diameter,pipe material,foundation width,and foundation position were systematically analyzed,and the effects of pipe stress conditions on pipe deformation patterns and slope failure mechanisms were examined.The results showed that pipe diameter,pipe material,foundation width,and foundation position not only affected the ultimate bearing capacity of the slope but also changed the propagation path of shear bands in the slope.Pipe diameter and pipe material had significant effects on slope bearing capacity and shear band development.Larger pipe diameters and pipe materials with lower stiffness both reduced the foundation bearing capacity of the slope.Foundation width and position controlled the formation path of slip surfaces within the slope.Pipe deformation mode was controlled by the bending moment distribution around the pipe.An increase in negative bending moment directly caused the pipe deforma-tion to transition from an elliptical to a heart-shaped pattern.The pipe-soil interface provided a poten-tial instability path,accelerating the development of slip surfaces in the slope.These findings provide important references for deformation control and structural design of slope-pipe systems.关键词
埋地管道/物质点法(MPM)/边坡-管道相互作用/承载力/管-土界面Key words
buried pipe/material point method(MPM)/slope-pipe interaction/bearing capacity/pipe-soil interface分类
建筑与水利引用本文复制引用
蒋昕飞,朱鸿鹄,谭道远,颜杜民,张巍..边坡-管道相互作用物质点法数值模拟研究[J].防灾减灾工程学报,2025,45(5):1062-1073,12.基金项目
国家杰出青年科学基金项目(42225702)、江苏省科技计划项目(BZ2023056)资助 （42225702）
