峡谷区桥梁基础边坡稳定性分析

Analysis on the Stability of Foundation Side Slopes of Bridges in Canyon Area

以贵州山区某桥为背景,介绍峡谷区桥梁边坡稳定性分析常用方法及边坡防护处理措施。桥梁位于黔中水利枢纽库区,桥梁横跨V型峡谷,桥墩设置在陡峭斜坡上,桥墩基础施工期间及桥梁建成库区蓄水后两岸边坡存在失稳风险,对桥梁的施工和使用安全造成威胁。为确保桥梁安全,对桥梁两岸边坡稳定性进行分析,结合计算分析确定边坡防护方案。

Taking the example of a bridge in Guizhou ＇s mountainous area,it introduces some common analytical methods on the side slope stability in Canyon area and the measures to protect side slopes. This bridge locates in the area about Qianzhong hydro- junction reservoir. Bridges a v- shaped Canyon,it has piers on a steep slope. During the foundation construction or when the reservoir is filled after the completion of bridge construction,it may bring risks of loosing stability to the slopes at both sides,which is a threat to the bridge construction and the security of use. In order to ensure the safety of the bridge,it provides the determination of protection program for side slopes through calculation and the analysis of the stability of the slopes on both sides.