预应力鱼腹式钢支撑基坑施工技术和工程应用

Excavation Construction Technology and Application on Fabricated Steel Support System Consisting of Prestressed Fish-bellied Beams

预应力鱼腹式钢支撑基坑支护体系已在长三角、珠三角等多个省市的基坑工程中进行了广泛应用。通过对上海某超大面积(约3.5万m^2)基坑工程进行案例分析,从EPC工程总承包管理的角度,介绍预应力鱼腹式基坑钢支撑技术在工程前期策划、基坑设计与施工以及总承包管理等方面的应用,为同类工程实施提供参考。

Fabricated Steel Support System Consisting of Prestressed Fish-bellied Beams has been widely used in foundation pit engineering in Yangtze river delta, pearl river delta and other provinces and cities.In this paper, a case study of a large foundation pit project in Shanghai (about 35 000 m^2) is carried out. From the perspective of EPC project general contracting management, this paper introduces the application of prestressed fish-web foundation pit steel support technology in pre-project planning, foundation pit design and construction and general contracting management, to provide reference for implementation to similar projects.