深基坑支护设计与施工技术的研究

发布时间：2018-03-11 03:40

本文选题：深基坑支护　切入点：稳定性计算　出处：《石家庄铁道大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着地下复合停车场、地下医院、地下商场、城市地铁、人防工程、高层建筑等工程的不断发展,基坑的埋置深度越来越大,基坑边坡的稳定逐渐成为不可忽视的问题,各类深基坑工程的支护随之大量涌现。深基坑工程的基坑支护结构虽然不是永久性结构,投资大不免会造成浪费,但基坑的支护不稳定,将势必造成工程质量事故的发生。为了确保稳定性,建筑物的基础都必须满足地下埋深嵌固的要求,所以无论是基坑的支护还是施工方案都面临着广度和深度的挑战。研究深基坑支护设计和施工方案也就具有了重要的科学意义和应用价值。论文通过对怀特商城二期工程深基坑周围环境、开挖深度、地下水位高低、基坑侧壁安全、边坡土质情况的调查和分析,确定该深基坑的支护方案为土钉支护加多排桩的桩锚支护形式,然后选取设计参数并对支护方案确定的支护结构进行稳定性验算。为了保证基坑工程的顺利进行及基坑安全,选择了合理的施工方案,并对基坑支护的施工过程进行管理,利用施工监测手段,加以现场文明施工措施以及质量保证体系,确保了该深基坑工程施工的顺利进行。为同类深基坑支护工程的设计和施工提供了参考、借鉴。
[Abstract]:With the continuous development of underground compound parking lot, underground hospital, underground shopping mall, city subway, civil air defense engineering, high-rise building and so on, the buried depth of foundation pit is increasing, and the stability of foundation pit slope is becoming a problem that can not be ignored. The supporting structure of deep foundation pit works is not permanent structure, and the investment will inevitably cause waste, but the foundation pit support is unstable. In order to ensure the stability, the foundation of the building must meet the requirements of the deep embedded underground. Therefore, both the foundation pit support and the construction plan are facing the challenge of breadth and depth. It is also of great scientific significance and application value to study the design and construction scheme of deep foundation pit support. The surrounding environment of the deep foundation pit of the second phase project, The depth of excavation, the level of groundwater level, the safety of side wall of foundation pit, and the investigation and analysis of the soil quality of the slope are investigated and analyzed. It is determined that the support scheme of the deep foundation pit is the form of pile anchor supporting with soil nailing and multi-row piles. Then the design parameters are selected and the stability of the supporting structure determined by the supporting scheme is checked. In order to ensure the smooth progress of foundation pit engineering and the safety of foundation pit, a reasonable construction scheme is selected, and the construction process of foundation pit support is managed. By means of construction monitoring, the site civilized construction measures and quality assurance system are used to ensure the smooth construction of the deep foundation pit, which provides a reference for the design and construction of the similar deep foundation pit supporting engineering.
【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

【引证文献】