地铁站明挖法和盖挖法对围护结构及其周围土体影响研究.pdf

国内图书分类号: TU362 学校代码: 10213 国际图书分类号: 624 密级:公开工程硕士学位论文 地铁站明挖法与盖挖法对围护结构及周围土体影响的研究硕士研究生: 阮航导师: 耿永常教授申请学位: 工程硕士学科: 建筑与土木工程所在单位: 土木工程学院答辩日期: 2011 年 6 月授予学位单位: 哈尔滨工业大学 Classified Index: TV362 : 624 Thesis for the Master Degree in Engineering RESEARCH OF EFFECT OF OPEN-CUT METHOD AND COVER EXCAVATION METHOD FOR METRO STATION ON RETAINING STRUCTURE AND SURROUNDING SOIL Candidate : Ruan Hang Supervisor : Prof. Geng Yongchang Academic Degree Applied for : Master of Engineering Speciality : Architecture and Civil Engineering Affiliation : School of Civil Engineering Date of Defence : June, 2011 Degree-Conferring-Institution : Harbin Institute of Technology 哈尔滨工业大学工程硕士学位论文- I - 摘要经济的快速发展带来了社会的进步,人口大量增加,人口与土地的矛盾将会越来越突出,城市化的步伐也越来越快。如何解决因人口快速增长而诞生的“城市综合症”一系列问题,摆在了我们面前,进行地下空间的开发利用,合理规划、设计快速地下交通网络,是解决城市人口、资源、环境三大危机的重要措施和必须途径。地下空间工程的建设,离不开施工工法的研究。盖挖法作为一门方兴未艾的施工工法,广泛的应用于地下工程中。论文对盖挖法及其特点、设计与施工中的关键技术、构造措施等进行了详细介绍与研究,对于围护结构、地下连续墙及中间支承柱等构件的施工、设计要点进行了探讨和分析。利用岩土有限元软件 MIDAS/GTS 实现了哈尔滨地铁 1 号线太平桥站施工的全过程数值模拟,把明挖法以及盖挖法这两种不同工法的施工过程分别模拟成多个工况,此外,还详细分析这些工况的围护结构内力及变形,并且对比分析了两种工法分别对周边地层、基坑临近建筑物及其基础的影响,得出了结论:在结构方面的评价分析中,盖挖法要优于明挖法施工。文章还简要介绍了太平桥地铁车站施工过程中遇到的一些实际问题,如对基坑周边建筑的保护、盾构井端头的加固处理、针对恶劣地质条件进行围护结构的补强止水处理等,并提出了处理解决办法。关键词:地铁车站;明挖法;盖挖法;有限元分析;数值模拟哈尔滨工业大学工程硕士学位论文- II - Abstract The development of economy has brought ra pid growth in social progress as well as substantial increase in population, and the contradicti on between population and land is ing increasingly prominent with th e development of urbanization. Thus, it is important to address a series of questions of "City Syndrome" induced by the rapid population growth. Developing the undergr ound space, planning and designing a speed underground work reasonably, is an important and necessary way to solve the three crises: urba n population, resources and envi ronment. As an ascendant construction method, Cover Excavation method has been widely used in underground engineering. This dissertation ha