地铁车站近建筑物深基坑施工安全风险因素及评估方法研究

发布时间：2019-02-12 07:33

【摘要】：目前,我国城市化进程的不断加快,城市空间资源不足这一问题逐渐凸显出来,而地铁的建设可以大大缓解地面交通的压力,减小城市地面空间的需求。但是往往城市地面建筑己高楼林立,地铁才开始规划修建地铁,另外线路的相交也致使车站越来越深,这种地下空间开发的滞后给地铁后期修建带来了不少困难,也给工程建设的安全性。特别是地铁车站建设的安全性提出了严峻的挑战。本文对地铁建设中遇到的近建筑物深基坑施工安全风险因素及评估进行了深入理论研究。全文共分六个部分。第一章是绪论,阐述安全风险因素致因理论的研究背景及现状,并且通过对现有文献的研究,然后给出研究方法;第二章总结近建筑物深基坑的施工特性以及危险源;第三章通过危险识别和事故致因机理研究,以及现场调查,综合设计出近建筑物深基坑施工安全关键影响因素体系;第四章,运用层次分析法(AHP),构造两两比较判断矩阵,计算出深基坑近接既有建筑物时的安全风险评价指标体系各层因素间的相对权重。第五章研究可拓理论和物元的基本问题,构建了评价指标体系,并基于物元可拓理论进行建模,对近建筑物深基坑的施工安全风险进行多因素综合评估;第六章节是结论和展望,包括本文研究所得到的结论以及进一步做出研究的方向。
[Abstract]:At present, with the rapid development of urbanization in our country, the shortage of urban space resources is becoming more and more obvious. The construction of subway can greatly relieve the pressure of ground transportation and reduce the demand of urban ground space. However, often the ground buildings in cities are already full of tall buildings, and the subway has only begun to plan and build the subway. In addition, the intersection of the lines also causes the stations to become deeper and deeper. This kind of lag in the development of underground space has brought a lot of difficulties to the later construction of the subway. It also gives safety to the construction of the project. In particular, the safety of subway station construction put forward a severe challenge. This paper makes a deep theoretical study on the risk factors and evaluation of the construction safety of the near building deep foundation pit in subway construction. The full text is divided into six parts. The first chapter is the introduction, expounding the research background and present situation of the safety risk factor cause theory, and through the research to the existing literature, then gives the research method, the second chapter summarizes the construction characteristic and the dangerous source of the deep foundation pit near the building; In the third chapter, through the research of hazard identification and accident cause mechanism, as well as the field investigation, the key influencing factors system of the construction safety of the near building deep foundation pit is designed synthetically. In the fourth chapter, the comparative judgment matrix is constructed by using the analytic hierarchy process (AHP), and the relative weights among the factors in the safety risk evaluation index system are calculated when the deep foundation pit is close to the existing building. In the fifth chapter, the basic problems of extension theory and matter-element are studied, and the evaluation index system is constructed, and based on the matter-element extension theory, the multi-factor comprehensive assessment of the construction safety risk of the deep foundation pit near the building is carried out. The sixth chapter is the conclusion and prospect, including the conclusion of this paper and the direction of further research.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU753

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