岩溶强发育区桥梁基础设计研究

Study on Bridge Foundation Design in Strong Karst Development Area

南广铁路桂肇段许多桥梁位于岩溶强发育区,根据岩溶地基的不同特点,对持力层的稳定性进行数学分析,选择合理的基础类型和岩溶处理措施,确保了桥梁基础安全,同时避免出现施工安全问题,保证施工顺利进行,使工程投资和工期可控。

Many of bridges on Guiping-Zhaoqing section of the Nanning-Guangzhou Railway are located in the strong karst development area. According to the different characteristics of the karst subsoil, the authors analyzed the stability of foundation bearing strata using mathematical methodand. And then the authors picked out the appropriate foundation types and treatment measures against the karst strata, which not only could ensure the safety of bridge foundation structure but also could ensure the safety and smooth going of the whole construction process of bridge foundation so as to make the project investment and the construction period controllable.