饱和软土地层中管幕法隧道施工方案研究

葛金科 

(上海市第二市政工程有限公司 )

   摘 要  上海市中环线虹许路-北虹路下立交工程是我国第一次采用管幕法隧道施工，也是世界上在饱和软土地层中施工的断面尺寸最大和最长的管幕法工程；结合工程实际，提出了管幕结合箱涵顶进的施工工法；本文对该方案进行了详细论述，从而为国内相关工程的设计、施工提供了经验。

   关键词  管幕法隧道，大断面箱涵，饱和软土

The study on construction method of pipe-roofing tunnel  in saturated soft soil

                 GE Jin-ke

Abstract  Taking into account the geological conditions, the pipe-roofing method is used in the cross project of Shanghai Hongxu-Beihong road. It is not only the first time using pipe-roofing method to construct tunnel in China, but also the largest and longest pipe-roofing tunnel in saturated soft soil in the world. According to project circumstance, the reliable advancing method which includes pipe and large-section culvert box advancing methods, is set up. At the same time, the construction risks and preventing methods are present.

Keywords  pipe-roofing tunnel, large-section culvert box,  saturated soft soil