对贵阳某大桥桥台溶洞的稳定性分析与评价

The stability analysis and evaluation on abutment cave of a bridge in Guiyang

贵州是我国岩溶地区分布的主要区域之一,在岩溶区处理路桥基础稳定性分析与评价是目前工程建设过程中面临的重点技术难题,尤其在处理大桥桥台溶洞方面,缺乏对溶洞应力应变稳定性的认识。文章以贵阳某大桥桥台溶洞为例,在调查研究区桥台溶洞工程地质环境条件的基础上,通过评价场地溶洞的岩土体力学性质,利用定性和定量两种方法对桥台溶洞进行系统的稳定性分析与评价,从而保证桥台溶洞的稳定性和工程的整体质量。

Guizhou is one of the major regional distribution of karst regions,the stability analysis and evaluation on dealing with bridge foundation in karst region is one of the key technical problems faced in the process of engineering construction. For abutment cave of bridges, the problem is a lack of understanding of the stability of karst cave stress and strain.This paper takes abutment cave of a certain bridge in Guiyang for example, on the basis of researching the geological conditions of abutment cave in research area, by evaluating the soil mechanical property of the cave, using both qualitative and quantitative methods to analyse the abutment cave systematically, so as to ensure the stability of abutment cave and the overall quality of the project.