岩土工程学报2016，Vol.38Issue(z2)：324-329,6.DOI:10.11779/CJGE2016S2053
基于真空帷幕止水与大气压力支护的深基坑开挖新工法
New method for excavation of deep foundation pit based on vacuum waterproof curtain and atmospheric pressure support
摘要
Abstract
A new method for excavation of soft soil deep foundation pit is introduced, that is the excavation method for deep foundation pit based on the vacuum water proof curtain and atmospheric pressure support. This method combines soft soil foundation treatment with excavation of foundation pit effectively, which has advantages such as vertical excavation, no inner support, dry operation, time-saving and cost-saving. The theoretical foundation of this technology is the negative pressure ball stress of vacuum preloading and the barrier function of rigid structure to the lateral earth pressure. In other words, the atmospheric pressure acting on the side wall of foundation pit and the barrier function of rigid structure to its lateral soils are used to replace the traditional support for foundation pit. At the same time, the vacuum preloading also has the effects of precipitation and ground foundation treatment. Engineering example shows the new construction method is feasibe and practical, and it provides a new design concept and direction for the development of pit engineering technology of deep foundation.关键词
软弱土地基/深基坑/真空预压/遮帘桩Key words
soft soil foundation/deep foundation fit/vacuum preloading/barrier pile分类
建筑与水利引用本文复制引用
李景林,吴春勇,王剑平,杨杰,龙玉桥..基于真空帷幕止水与大气压力支护的深基坑开挖新工法[J].岩土工程学报,2016,38(z2):324-329,6.基金项目
国家自然科学基金项目 （）
