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摘要随着城市建设的发展，高层建筑越来越多，出现了大量的深基坑工程，为了保证基坑周围的建筑物、环境、下水道、道理等的安全和基坑边坡的稳定，必须对深基坑边坡的稳定性进行分析，研究深基坑稳定的治理方案。基坑支护体系是临时结构，安全储备较小，具有较大风险，基坑工程具有很强的区域性。不同的周边环境，地质条件下基坑工程的差异很大。本文先介绍了吴中科技创业园D楼的工程概况，包括水文地质和周围环境，然后结合所学基坑开挖支护的相关方法和D楼时间情况选择出了适合的支护方案。整个基坑采用一排钻孔灌注作挡土结构，桩锚支护作为支护结构体系。最后通过施工组织说明了各个工序施工的工法和需要注意的问题。 51298
毕业论文关键词:深基坑；支护结构；钻孔灌注桩；桩锚支护
Abstract
With the development of city construction, more and more high-rise buildings, appeared a lot of deep excavation, in order to ensure the pit surrounding buildings, environment, sewers, truth, the safety and the stability of foundation pit slope, must carry on the stability analysis of deep foundation pit slope, and the deep foundation pit stability control scheme. The supporting system of foundation pit is a temporary structure, safety is small, with a greater risk, has the very strong regional foundation pit engineering. Different environment, different geological conditions of foundation pit engineering in great. This paper first introduces the general situation of Wuzhong Technology Park D building project, including hydrological geology and environment, and then combined with the foundation pit excavation and related method supporting and building D time choose the suitable support scheme. The foundation pit by a row of bored as retaining structure, anchor supporting pile as a retaining structure. Finally, the construction organization that each procedure of the construction method and the issues needing attention.
Keywords: deep foundation pit; retaining structure; bored pile; pile anchor bracing
目 录
第一章 绪 论 6
1.1 研究意义及目的 6
1.2 研究现状以及存在问题 6
1.3 主要研究内容 7
第二章 基坑基本概况 7
2.1 基坑工程概况 7
2.2 地质条件 8
第三章 基坑支护方案选择 10
3.1 基坑支护设计基本要求 10
3.2 基坑支护方案选择 11
3.3 计算方案 11
第四章 基坑支护设计 12
4.1 基坑支护方案设计参数说明 12
4.2 西侧AB段和东侧DE段基坑支护结构计算： 13
4.3 南侧BCD段支护结构计算 32
4.4 北侧EF段和FGA段基坑支护结构计算 44
第五章 基坑降止水设计 56
5.1 基坑止水计算 56
5.2 基坑降水计算 58
第六章 基坑稳定性验算 63
6.1 EF段稳定性验算