山区公路陡斜坡路基-挡墙体系病害动态过程调控技术  

Dynamic Process Control Technology of Subgrade-Retaining Wall System in Steep Slope of Mountainous Highway

作　　者：李海平[1,2] 李正凯 阎宗岭 LI Haiping;LI Zhengkai;YAN Zongling

机构地区：[1]招商局重庆交通科研设计院有限公司,重庆400067 [2]山区道路工程与防灾减灾技术国家地方联合工程实验室,重庆400067 [3]广州市高速公路有限公司,广州510288

出　　处：《公路交通技术》2018年第6期8-12,共5页Technology of Highway and Transport

基　　金：国家科技支撑计划课题项目(2015BAK09B01);广东省交通运输厅科技计划项目(科技-2017-02-008)

摘　　要：山区公路运营过程中路基-支挡结构变形失稳的发生、发展过程与地层岩性等内因密切相关,气象、水文及施工等外动力条件则是路基及支挡结构变形和发展的主要诱发因素;多雨地区复杂地质条件下的路基沉陷变形问题成为危及公路正常运营的典型地质灾害问题之一。通过对某陡斜坡路基病害的工程地质环境、路基沉陷变形过程及破坏机理分析,揭示了山区斜坡路基变形破坏的区域性、渐进式、影响因素复杂、破坏模式多样等特点,提出了动态过程调控理念,对该类路基-挡墙病害治理须选择恰当介入时机,并采用综合治理措施的设计思路,获得了良好的工程效果,可为类似路基-挡墙病害治理提供借鉴。The occurrence and development of deformation and instability of roadbed-retaining structure are closely related to strata lithology and other internal factors during the operation of highway in mountainous areas.The meteorological,hydrological and construction external dynamic conditions are the main inducing factors for the deformation and development of roadbed and retaining structure.Subgrade subsidence deformation under complex geological conditions in rainy areas has become one of the typical geological hazards endangering the normal operation of highways.Based on the analysis of engineering geological environment,deformation process and failure mechanism of a steep slope subgrade,the paper reveals the characteristics of regional,progressive,complex influencing factors and diversified failure modes of Slope Subgrade in mountainous areas,and put forward the concept of dynamic process control,and the treatment of such subgrade-retaining wall diseases is necessary.The paper also points out that it is necessary to choose the appropriate timing for the treatment of such subgrade-retaining wall disease,and the design idea of comprehensive treatment measures should be adopted,so as to obtain a good engineering effect,which can provide reference for similar roadbed-retaining wall disease treatment.

关 键 词：斜坡路基 路基病害 挡墙加固 渐进式破坏 

分 类 号：U416[交通运输工程—道路与铁道工程]