2011年5月上 施工技术 第40卷第340期 CONSTRUCTION TECHNOLOGY 软土地区深基坑工程存在的变形 与稳定问题及其控制 —基坑施工全过程的稳定问题 郑刚，宾华港2 (1.天津大学建筑工程学隆，天津300072：2.天津市建设交通管理委员会，天津300051) [要]对基悦施工全边程可能产生的穆定向题进了分析，出了复杂深卷悦的穆定向题直性.根基悦 穆的接引发因素划分为基抗连护传构施工引发的穆定向题、悦内外土体形成滑动面引发的穆定向题、竖向直拖 传构（排裤、地下连镇墙等）破坏引发的基悦稳定向题、水平连撑（猫杆）系说破坏引起的基悦穆定向题、水平支撑 的竖向支承系说（童柱）破环引发的稳定向题和地下水引发的稳定向题6类，对具关稳机理、危害、程进行了 分析.最后，提出了基悦支护结体系的元余度设计概会和分类. [关键词]土：深基悦：支护开挖：移定破坏：余度 [中便分类导]TU447 [文献标识好]A [文章编号]10028498(2011)09-0001-06 Stability and Deformation Problems During Deep Foundation Excavation in Soft Soil Area and Their Control Measures -Stability Problems During the Whole Process of Excavation Construction Zheng Gang' Dou Huagang (1.School of Ciril Engineering Tianjin University Tianjin 300072 China: 2.Tianjin Urban Construction Communications Commission Tianjin 300051 China) Abstract:The stability problem must be carefully examined to minimize the impact of excavation on surroundings when deep excavation urban area is surrounded by various buildings roads buried pipelines and underground tunnels.The stability problems during the whole process of excavation are discussed and the plex of stability failure of braced deep excavation is illustrated.Based on the element whose failure directly leads to the stability failure of brace excavation the stability problems of braced deep excavation is classified into 6 categories namely stability problem induces by construction of retaining wall slip surface formed in ground stability problem due to the failure of retain...
软土地区深基坑工程存在的变形与稳定问题及其控制-基坑施工全过程的稳定问题.pdf
