软土地下工程和深基坑.PDF

软土地下工程与深基坑 黄茂松1, 2 王卫东3 郑 刚4 ( 1. 同济大学地下建筑与工程系，上海200092； 2. 同济大学岩土及地下工程教育部重点实验室，上海200092； 3. 华东建筑设计院有限公司，上海200002；4. 天津大学建筑工程学院，天津300036) 摘要：针对当前国内外软土地下工程研究现状进行了系统概括和评述，重点探讨了深基坑和盾构隧道两种典型地下工 程涉及的关键土工问题。其一是复杂地质及环境条件下软土基坑工程的分析方法与新技术，包括基坑围护结构受力分 析、基坑抗隆起稳定性分析、渗流对基坑稳定性的影响、深基坑工程中的冗余度问题、软土基坑工程的新技术；其二 是软土隧道工程的稳定与变形问题，包括隧道开挖面稳定性分析、渗流对隧道开挖面稳定性的影响、隧道纵向不均匀 沉降与长期沉降、隧道地震响应分析与动力模型试验；最后是软土地下工程施工的环境土工效应，包括基坑开挖引起 的土体变形、隧道开挖引起的土体变形、地下工程开挖对周围环境的影响。 关键词：软土；地下工程；深基坑；隧道；研究现状 中图分类号：TU4 文献标识码：A 文章编号： Underground engineering and deep excavations in soft soils Huang Maosong 1,2 Wang Weidong3 Zheng Gang 4 (1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 3. East China Architectural Design Institute, Shanghai 200002, China; 4. School of Civil Engineering, Tianjin University, Tianjin 300072, China) Abstract : Current researches on underground engineering in soft soils are reviewed and commented. Three main key geotechnical problems in deep excavations and shield tunnelling are discussed. The first one is concerning with analysis methods and new techniques of deep excavations in soft soils under complicated geological and environmental conditions, such as the stress analysis of retaining structures for foundation pits, basal stability analysis of excavations, the influence of seepage on the stability of deep excavation, the redundancy of deep excavations, and the new technique of excavations in soft soils. The second one is related to the stability and deformation analysis of tunnel in soft soils, such as