科技创新与应用2024，Vol.14Issue(13)：86-90,5.DOI:10.19981/j.CN23-1581/G3.2024.13.021
某高速公路高陡危岩体失稳对拟建桥梁的影响分析
摘要
Abstract
Taking the analysis of the influence of the high and steep cliff slope of an expressway in the southwest mountain area on the proposed bridge at the foot of the slope as an example,the engineering geological investigation and analysis based on the finite element strength reduction method shows that the whole cliff slope is in an unstable state.The deformation mode is staggered landslide deformation.The finite element-discrete element coupling analysis technique is used to dynamically simulate the influence of slope instability on bridge safety.The simulation results show that after the staggered deformation of the steep slope,the staggered rock mass finally collides with the bottom of the bridge pier and abutment,the pier breaks from the root and the bridge collapses as a whole.Based on the analysis results,this paper puts forward three schemes to deal with the destructive influence of the high and steep slope on the proposed bridge,strengthening the steep slope with prestressed anchor cable,setting the retaining wall at the foot of the slope and avoiding the pier in the range of slope instability.关键词
岩土工程/高陡危岩体/有限元强度折减法/错落式变形/桥梁安全Key words
geotechnical engineering/high and steep dangerous rock mass/finite element strength reduction method/staggered deformation/bridge safety分类
交通工程引用本文复制引用
尹威江,赖国泉..某高速公路高陡危岩体失稳对拟建桥梁的影响分析[J].科技创新与应用,2024,14(13):86-90,5.基金项目
中国中铁股份有限公司科技研究开发计划(2022-重大专项-07) （2022-重大专项-07）
甘肃省技术创新引导计划-企业研发机构能力建设专项资助(23CXJA0011) （23CXJA0011）
