【作者】 王兵；

【导师】 肖亚明；

【作者基本信息】 合肥工业大学 ， 建筑与土木工程， 2010， 硕士

【摘要】 建筑工程中的深基坑支护技术近年有了很大的发展。深基坑支护的作用是为了挡土、截水、保证坑底稳定、承担必要的施工荷载、保证地下结构工程的顺利施工。深基坑支护结构虽然是施工期间的临时支护结构,但其选型、计算和施工是否正确,对施工的安全、工期、经济效益有巨大的影响,是高层建筑施工的关键技术之一。本文首先对深基坑支护结构的工程特点进行了详细的论述,介绍了几种常用深基坑支护的结构类型,由此总结了当前深基坑工程中常用的设计方法。然后介绍了基坑的稳定性理论原理,验算方法及其影响因素。论文介绍了土钉支护的概念,简述了土钉墙的应用范围,分析了土钉的作用机理和土钉支护的特点,研究了复合土钉的概念和特点。通过研究土钉支护结构的计算方法深入分析了深基坑工程设计与施工现状及一些事项。论文以苏州工业园区月亮湾建屋广场工程为例进行分析,主要是以建屋广场深基坑工程为主要对象,对其基坑施工期间中较为关键的深基坑支护结构设计和施工内容进行研究,通过对该支护方案、设计和实测的数据资料进行归纳整理,分析了土钉墙支护的影响因素,并在此基础上总结一些深基坑土钉墙支护的有效措施和经验教训,提出一些设想和建议,希望能为今后类似工程提供一些借鉴和参考。更多还原

【Abstract】 Retaining and protect ion of building foundation excavations have great development in recent years. This technology can be used to retain the soil, cut off the water and ensure the bottom of the pit stability in order to assume the necessary load. It also can guarantee the smooth progress of underground structural engineering. The retaining and protection structure of deep excavation pit is temporary structure during the construction. but whether its selection. calculation and construction is correct or not will affect construction security, period and the economic benefits and is one of the key techn0109ieS of the high-rise building construction.This article firstly featured deep excavation pit support structure in detail and introduce several common types of deep excavation pit support structure so as to sum up the coiiL,,,non design methods of the current deep excavation pit. Then this article introduced the stability theory principles, methods and checking factors of a foundation pit. Three chapter also introduced the concept of the soil nailing, the application of the soil nailing wall on the analysis of the role of soil nails and the characteristics of soil nailing and on the concept and characteristics of the composite soil nails. By studying the method of calculating of the structure of soil nailing, we in-depth analysed design and construction and some of the issues.Chapter four takes the sample of Yu Liangwan square in Suzhou industrial Park, this article is taking the references of the design and construction of the retaining wall of Jianwu square foundation, to analyze those key elements critical to the soil nailing wall through collecting and studying the supporting plans, designs and monitoring records. Fouthermore, a summary of effective methods and correction actions during deep foundation pit construction is also included in this article. Hopefully, it can be of some help as a reference for any possible similar buildings in future.更多还原