深厚复杂软土地层深基坑真空降水处理效果分析  

Effect Analysis of Vacuum Dewatering Treatment for Deep and Complex Soft Soil Deep Foundation Pit

作　　者：肖瑞传[1] 赖俊鹏 区穗辉 徐明辉 燕哲 潘泓[3] 骆冠勇[3] 曹洪[3] Xiao Ruichuan;Lai Junpeng;Ou Suihui;Xu Minghui;Yan Zhe;Pan Hong;Luo Guanyong;Cao Hong(、 Guangzhou Metro Corporation Guangzhou 510030, China;、 Guangzhou Mass Transit Engineering Consultant Co^ Ltd. Guangzhou 510010,China;、 State Key Laboratory of Subtropical Building Science, South China University o f Technology Guangzhou 510641,China)

机构地区：[1]广州市地下铁道总公司,广州510330 [2]广州轨道交通建设监理有限公司,广州510010 [3]华南理工大学亚热带建筑科学国家重点实验室,广州510641

出　　处：《广东土木与建筑》2018年第3期39-41,共3页Guangdong Architecture Civil Engineering

摘　　要：真空管井复合降水加快了渗流速度从而使土体固结沉降加快,有效减少土层含水量;同时,真空管井复合降水对地下结构受力也较为有利。论文以广州南沙某基坑工程为依托,运用Midas GTS NX有限元软件对其进行土体固结沉降、地下结构变形等方面分析,并将真空管井降水和常规管井降水的效果进行对比,结果表明:真空降水使土体产生的固结沉降比常规管井降水的大;且支护结构水平位移相对较小。Vacuum tube well accelerate the precipitation composite seepage velocity so that the soil consolidation settlement speed,effectively reduce the soil moisture content. At the same time,vacuum tube well composite precipitation on underground structure stress is more favorable.The foundation pit engineering in Guangzhou Nansha as the basis,using the Midas GTS NX software of finite element analysis of soil consolidation settlement,underground structure deformation and so on,and the vacuum dewatering and conventional dewatering effect were compared,the results show that the precipitation of the soil consolidation settlement of vacuum dewatering than conventional ones. And the horizontal displacement of supporting structure is relatively small.

关 键 词：真空管井降水 固结 沉降 支护结构变形 

分 类 号：TU463[建筑科学—结构工程]