2011年4月上 施工技术 第40卷第338期 CONSTRUCTION TECHNOLOGY 5 软土地区深基坑工程存在的变形 与稳定问题及其控制 一基坑施工全过程可产生的变形 李光照，郑刚2 (1.天津滨海新区建设投资集团有限公司，天津300450；2.天津大学建筑工程学晓，天津300072) [摘要]随着我国城市建设的发展，软土地区的深基坑工程设计与施工面临越来越复杂的环境条件，基坑施工对环 境影响的控制要求也越来越严格，基坑工程已进人已变形控制设计与施工为主的时代.结合天津软土地区的工程 实践及国内其他地区经验，将基坑工程的全过程划分为基坑支护结构施工、基坑降水、基坑开挖、基坑使用、拆除支 撑、地下水位恢复等6个阶段，分析了施工全过程各个阶段可能产生的稳定与变形机理、危害及控制方法. [关键词]软土：基坑工程；降水；变形：稳定 [中图分类号]TU447 [文献标识码]A[文章编号]1002-8498(2011)07-0005-05 Stability and Deformation Problems During Deep Foundation Excavation in Soft Soil Area and Their Control Measures —Deformation in Process of Foundation Excavation Li Guangzhao' Zheng Gang2 (1.Tianjin Binhai New Area Construction Investment Group Co.Ltd.Tianjin 300450 China; 2.School of Cicil Engineering Tianjin University Tianjin 300072 China) Abstract:With the development of urban construction in China environment conditions of design and construction of deep foundation excavation in soft soil is getting more plex and control requirements for influence of foundation excavation on environment is getting more strict.Based on engineering practice process of excavation construction is divided into six stages as construction of retaining structures foundation excavation dewatering excavation service stage demolition of support and groundwater level recovery.Stability and deformation mechanism and harmfulness and countermeasures in each stage are analyzed. Key words:soft soil;foundation excavation;dewatering:deformation;stability 1软土地区基坑工程的特点 ~40m 其中上海地铁四号线修复工...
软土地区深基坑工程存在的变形与稳定问题及其控制-基坑施工全过程可产生的变形.pdf
