钢管斜撑加高压旋喷桩法在处理基坑险情中的应用
摘要:苏州某地下车库深基坑工程,地基情况为苏州典型土层,最大开挖深度5.25m,原采用钻孔灌注桩加水泥土止水帷幕进行支护。本工程原计划到2011年3月份完成基坑部分施工,但施工单位为了抢进度,等周边高层住宅施工至10层时才进行地下车库的开挖。于2011年7月份在开挖地下车库基坑时,在支护桩墙外侧出现水平方向裂缝,且发展迅速,第五天就发展为10cm,后采用坑内被动区旋喷桩加固+钢管内支撑的形式进行处理,经过处理后,险情得到了控制,避免了更大的损失。
Abstract:Some underground garage deep hole excavated for building foundation project in Suzhou, ground situation for Suzhou typical soil layer, the biggest cutting depth is 5.25m with the drill hole filling pile supports and protections watering soil to stop the water curtain to carry on the supports and protections.This project is planed originally to completes the hole excavated for building foundation part before March, 2011, but in order to snatch the progress, construction and so on only then carries on the underground garage the peripheral high-level housing construction to 10 strata times excavating.In July, 2011 when excavates the underground garage hole excavated for building foundation, in the guard stake wall flank appears the horizontal direction crack, also the development is rapid, third days on the development are 10cm, latter decided to use the steel pipe braces & high-pressure jet to carry, after process processing, the dangerous situation was under the control, has avoided a bigger loss.
中文标题：
钢管斜撑加高压旋喷桩法在处理基坑险情中的应用
The Application of the Steel Pipe Braces & High-pressure Jet in the Processing Hole Excavated for Building Foundation Dangerous Situation
作者：
董军兆
Dong Junzhao
作者简介:董军兆,1972年生,男,汉族,山西运城人,高级工程师,主要从事岩土工程勘察、基坑设计与监测工作E-mail:djz737500@sina.com
通讯地址：
苏州工业园区同济勘测设计有限公司, 江苏苏州 215021
SuzhouindustryGardenTongjiInvestigation&DesignCo.LTD,Suzhou215000,Jiangsu,China
中图分类号:TU19;TU2
doi:10.3969/j.issn.1007-2993.2011.06.012
出版物：岩土工程技术
收稿日期:2011-10-20
关键词:深基坑,斜撑,水平位移,被动区加固,地下水水位
Key words:deep hole excavated for building foundation,bracing,horizontal departure,passive area reinforcement,phreatic water surface
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