悬挂式帷幕条件下基坑渗流特性的计算分析  

Analysis for Seepage Characteristic of Deep Foundation Pit with Hanging Impervious Purdah

作　　者：王昆泰[1] 胡立强[1] 吕凯歌[1] 

机构地区：[1]中国建筑科学研究院地基所,北京100013

出　　处：《建筑科学》2010年第1期81-84,共4页Building Science

摘　　要：采用FLAC3D软件,结合工程实例分析了悬挂帷幕条件下深基坑降水时基坑外地下水压力的变化特征;通过对不同帷幕插入深度时坑外地下水压力变化的对比分析,表明悬挂式帷幕可以减少坑外地下水压力下降,但地下水位仍有较大幅度降低,降水对周边环境影响不可忽略。Based on engineering example and FLAC^3D program, the seepage characteristic for groundwater outside foundation pit is studied. Through setting different build-in sizes for impervious purdah, the contrasting analysis is processed. As a result, the hanging impervious purdah can be used to reduce groundwater pressure dropping outside foundation pit. However, the impact on surroundings with the groundwater level dropping is not negligible though the hanging impervious is used.

关 键 词：深基坑降水 水头 沉降量 隔水帷幕 

分 类 号：TU463[建筑科学—结构工程]