摘要
高山峡谷区铁路桥梁岸坡的稳定性直接关系到桥梁位置的选择,甚至影响铁路选线。近年来,随着中国铁路网在向西部高速扩展,峡谷区桥梁岸坡稳定性的研究成为了热点。峡谷区桥梁岸坡最显著的特点是桥梁基础与岸坡岩体之间存在相互影响,其力学行为复杂。为了分析评价高山峡谷区桥梁边坡的稳定性,本文从工程地质调查、稳定性分析与评价及信息化监测三大方面入手,建立了一套峡谷区桥梁基础岸坡稳定性及其控制研究的技术方法体系,并以大瑞铁路澜沧江大桥桥基岸坡为例,对该技术方法体系做了详细说明,希望对今后的研究工作能有启发。
It is important and essential to studyrockslope stability of bridge foundation in gorge area,which relates directly to the feasibility of bridge site scheme,even the route selection of railway.With the construction of railway in the mountainous areas,the study on rock slope stability of bridge foundation get the focus of engineering geologists.The significant characteristic of rock slope of bridge foundation is the mutual influence between the foundation and rockmass,and mechanical behavior is complex.Combining with the research on rock slope of bridge foundation,the stable problem of stability analysis have comprehensively and systematically studied from 3 domains,namelyengineering geologyinvestigation,analysis and evaluation of the stability and informationized monitoring.A set of technical and methodological system on rock slope stability of bridge foundation in gorge area was established.This paper takes the rock slope of Lancangjiang bridge foundation on Dali-Ruili Railway as an example to detail the technical and methodological system.The result shows that thetechnical and methodological system is effective in evalution of rock slope stability of bridge foundation in gorge area.
引文
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