软土地层管幕-箱涵推进工法阻力计算研究  

Study on Calculation of Thrust for Culvert Box Pushed Within Pipe-Roof in Soft Soil Layer

作　　者：顾翠莲[1] 夏才初[1] 李向阳[1] 由广明[1] 

机构地区：[1]同济大学地下建筑与工程系,上海200092

出　　处：《地下空间与工程学报》2007年第1期128-131,共4页Chinese Journal of Underground Space and Engineering

基　　金：上海市重大科技攻关项目课题(04dz12004);上海市重点学科(岩体工程)建设项目

摘　　要：上海市中环线北虹路下立交工程是目前世界上在饱和含水地层中施工的截面最大的管幕法工程。箱涵推进中推进阻力估算正确与否是工程成败的关键因素之一。基于摩擦及土体的极限平衡理论,分析了在管幕存在的条件下箱涵顶进中推进阻力的构成及计算方法,并根据不同的挖土工况给出相应的计算公式。计算结果和实测阻力进行对比,结果较为接近,可为同类工程提供参考。Up till now, the crossing project under Beihong Road of the intermediate ring road in Shanghai is a pipe - roof project with the biggest cross - section constructed in the saturated soft soil stratum. To estimate the resistance of thrust correctly during the process of the culvert box jacking is one of the main factors to construct the project successfully. Based on the friction theory and the theory of limiting equilibrium of soil, the composition of the thrust and its calculation methods are analyzed, and the corresponding formulas for different soil excavation conditions are given. The theoretical value is close to the measured value, therefore, the calculation method can be reference for the similar projects.

关 键 词：管幕法 箱涵 推进阻力 

分 类 号：TU471.8[建筑科学—结构工程]