岩溶地区下综合管廊倒虹吸结构模拟设计与施工技术

Simulation Design and Construction Technology of Inverted Siphon Structure of Integrated Pipe Gallery in Karst Area

研究倒虹吸段岩溶地区下综合管廊的应力与沉降的影响,并探索溶洞与结构的安全距离厚度问题,通过物探技术并结合地质勘察手段寻找溶洞,现根据实际工况进行倒虹吸段溶洞模拟建立,采用弹性地基梁模拟计算,采用有限元分析软件对管廊结构进行受力分析,采用增加倒虹吸段管廊钢筋混凝土顶、底板厚度来跨越溶洞方法处理技术。实践证明倒虹吸段框架结构运行安全,该技术值得推广应用。

Study the effects of stress and settlement of the integrated pipeline gallery in the karst area of the inverted siphon section,and explore the safety distance between the cave and the structure,the geophysical prospecting technology combined with the geological survey method is used to find the cave,Now,the simulation of the inverted siphon karst cave is established according to the actual working conditions,elastic foundation beam is used,finite element analysis software is used to analyze the stress bearing structure of the pipe gallery,and the reinforced concrete top and bottom plate thickness of the inverted siphon pipe gallery are added to cross the karst cave treatment technology. Practice has proved that the operation of the frame structure of the inverted rainbow section is safe and worthy of popularization and application.