三峡大学学报（自然科学版）2024，Vol.46Issue(1)：43-48,6.DOI:10.13393/j.cnki.issn.1672-948X.2024.01.007
含缓倾结构面的岩质桥址边坡地震稳定性评价及加固优化
Seismic Stability Evaluation and Reinforcement Optimization of Rock Bridge Site Slopes with Gently Inclined Structural Planes
摘要
Abstract
The seismic stability evaluation of bridge site slopes is very important in bridge construction,and the stability of rock bridge site slopes in mountainous areas is mostly controlled by structural planes.Based on a typical bridge site slope of a certain highway bridge,the finite element numerical simulation technology are used to consider the strain softening characteristics of rock and soil materials,and to study the safety and stability of the bridge site slope with gently inclined weak structural planes under earthquake action.The results indicate that the finite element numerical simulation technology considering strain softening of geotechnical materials can effectively reveal the multi-level potential sliding characteristics of bridge site slopes with gently inclined structural planes.The seismic load intensifies the gradual development trend of multi-level sliding surfaces within the slope.The spatiotemporal order of the development of multi-level sliding surfaces is that primary main sliding surface,secondary main sliding surface,and secondary sliding surface.Safety design needs to consider the stability of the upper and lower slopes at the pier and abutment under seismic conditions.Based on the seismic stability and deformation characteristics of the upper and lower slopes at the main pier position of the bridge,an optimization plan for grouting reinforcement and prestressed anchor cable joint reinforcement of gently inclined structural surfaces is proposed.关键词
桥址边坡/缓倾结构面/应变软化/地震/稳定性评价/加固优化Key words
bridge site slope/gently inclined structural plane/strain softening/earthquake/stability evaluation/reinforcement optimization分类
土木建筑引用本文复制引用
汪红武,李文菊,饶颖曜,秦辉..含缓倾结构面的岩质桥址边坡地震稳定性评价及加固优化[J].三峡大学学报（自然科学版）,2024,46(1):43-48,6.基金项目
云南省重点研发计划(202303AA080010) （202303AA080010）
国家自然科学基金项目(51779250) （51779250）
云南省交通科技项目(云交科教便[2020]74号) （云交科教便[2020]74号）
