岩溶地区水中墩薄壁沉井遇障碍处理方案

Treatment scheme of thin-walled caisson with pier in karst area

岩溶地区水中墩基础采用钢筋混凝土薄壁沉井施工时,会遇到溶槽等不明障碍而无法下沉到位,不仅影响基础施工进度和质量,也会大大增加工程成本。结合黎南铁路复线的大桥河中桥的施工实践,介绍了施工过程沉井下沉困难的情况,分析了原因,简要介绍了解决方案,可供类似工程参考。

Basis of karst regional water pier reinforced concrete thin-walled caisson construction,eroded groove and other unknown obstacles encountered and can not sink in place,not only affect the basis of the construction progress and quality,will greatly increase the cost of the project.This article describes the sunken well difficult in construction process of the Daqiaohe bridge＇s practice,analyzes the reasons,and introduces the solution,may be reference for similar projects.