兰合铁路红地沟中桥岸坡稳定性分析

Analysis on Stability of Bank Slope of Hongdigou Middle Bridge in Langhe Railway

红地沟中桥位于沟谷纵横的山区,地形地貌复杂,地质构造发育。该文通过地质调绘、工程钻探、岩体声波测试和室内力学试验等多种方法,对桥台岸坡岩体特性进行了详细研究。基于极限平衡理论,建立相应的计算模型,运用Geo-Slope软件对岸坡进行现状整体稳定性分析,给出了桥台岸坡整体稳定的坡角,并就桥台岸坡防治措施提出了建议。

Hongdigou middle bridge locates in the mountain area with vertical and horizontal cheuch,the topography and geomorphology is complex,and the geological structure is developmental. Through some methods,such as geological mapping,engineering drilling,sound wave test of rock,indoor mechanical test and so on,the characteristics of rock mass in abutment bank slope are studied detailly. Based on the limit equilibrium theory,the corresponding calculation model is established. The overall stability of bank slope is analysed by using the Geo-Slope. The slope angle of the overall stability of the abutment bank slope is given. Some prevention measures for abutment bank slope are proposed.