海宁市基坑支护结构形式选用研究

发布时间：2018-04-14 08:50

本文选题：海宁地区 + 基坑工程　；参考：《浙江大学》2013年硕士论文

【摘要】：随着经济的迅速发展、城镇化建设和地下空间的开发及利用,海宁地区涌现出大量基坑工程。由于勘察设计、工程管理、施工等方面原因导致基坑工程事故时有发生,给社会造成较大的经济损失,也给本地区安全生产带来较大压力。本文通过收集和整理海宁地区自2009年以来36例基坑工程实例,统计了海宁地区常用的支护结构形式、降排水形式、常见基坑工程事故以及处理方法,提出了不同环境条件、不同地质和水文条件、不同开挖深度下基坑支护结构和地下水控制系统的合理选型建议。接着,通过海宁市建筑装饰材料市场易地迁建工程和海宁银泰城基坑工程实施过程和监测数据分析,探讨了海宁地区基坑工程失败和成功的典型特征,为今后本地区类似基坑工程的设计和施工提供参考。基坑工程中如忽略坑中坑对支护结构稳定和变形的影响,将产生安全隐患。本文借助大型三维通用有限元ABAQUS软件,针对海宁地区典型的软粘土地基,分析了坑中坑平面尺寸、位置和深度对支护结构变形和内力的影响,初步总结出在一定条件下坑中坑等效折算深度。
[Abstract]:With the rapid development of economy, the construction of urbanization and the development and utilization of underground space, a large number of foundation pit projects have emerged in Haining area.As a result of investigation and design, engineering management, construction and other reasons, pit engineering accidents occur from time to time, causing greater economic losses to the society, and also bringing greater pressure to the safety of production in this area.Through collecting and sorting out 36 examples of foundation pit engineering in Haining area since 2009, this paper makes statistics on the common supporting structure, dewatering, common foundation pit accidents and treatment methods in Haining area, and puts forward different environmental conditions.Reasonable selection of foundation pit support structure and groundwater control system under different geological and hydrological conditions and different excavation depth is suggested.Then, the typical characteristics of the failure and success of Haining foundation pit engineering are discussed through the analysis of the implementation process and monitoring data of the relocation project in Haining construction decoration material market and the foundation pit engineering in Yintai city of Haining.It provides reference for the design and construction of similar foundation pit engineering in this area in the future.If the influence of pit on the stability and deformation of supporting structure is ignored in foundation pit engineering, there will be hidden trouble in safety.In this paper, with the aid of large-scale 3D finite element ABAQUS software, the influence of the plane size, position and depth of the crater on the deformation and internal force of the supporting structure is analyzed for the typical soft clay foundation in Haining area.The equivalent conversion depth of the pit in the pit is preliminarily summed up under certain conditions.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU470

【参考文献】