摘要
依托某高速公路路堑顺层岩质边坡垮塌灾害治理工程,提出了抗滑键施工的边坡治理措施,基于有限元软件FLAC 3D建立了加固前后仿真计算模型,并在公路边坡关键位置布设了3个监控点。通过对比现场监测数据与有限元仿真结果可知:加固前的边坡处于欠稳定状态,边坡发生再次垮塌的可能性较大;加固前边坡沿着结构面变形,而加固后则沿着临空面变形,且加固后未出现应力集中现象;边坡加固后变形量较小,最大位移值小于3 mm,说明抗滑键加固效果较好。
It relies on the disaster prevention engineering of a bedding rock slope of a highway cutting,and proposes the slope treatment measures of anti-sliding key construction.Based on the finite element software FLAC 3D,a simulation calculation model before and after reinforcement is established and the key position of the highway slope Three monitoring points were installed.By comparing the field monitoring data with the finite element simulation results,it can be seen that the slope before reinforcement is in an unstable state,and the slope is more likely to collapse again;the slope before reinforcement is deformed along the structural plane,and after reinforcement,it is along the free The surface is deformed,and there is no stress concentration after reinforcement;the amount of deformation after slope reinforcement is small,and the maximum displacement value is less than 3 mm,indicating that the anti-skid key reinforcement effect is better.
作者
钟卫平
ZHONG Weiping(Jiangxi Gannan Highway Survey and Design Institute,Ganzhou,Jiangxi 341000,China)
出处
《公路工程》
北大核心
2020年第6期250-254,共5页
Highway Engineering
基金
2017年江西省交通运输厅(2017H0012)。
关键词
高速公路
岩质边坡
边坡垮塌
边坡失稳
抗滑键
highway
rock slope
slope collapse
slope instability
anti-sliding key
