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摘要毕业设计是本科学习的一个重要环节，能够培养学生自主解决问题的能力，为以后步入职场打好专业基础。本毕业设计内容为招商银行大厦深基坑支护设计。工程位于苏州工业园区万盛街东、旺墩路北、中央河南侧。工程建筑由主楼及裙房、地下车库组成，基坑面积约为8000m2，周长约400m。主楼区开挖深度为9.65m，裙楼区开挖深度为5.65m。51370
针对该工程，按 “安全可靠、经济合理、技术可行、施工方便”基坑支护原则进行毕业设计。首先对基坑支护方式作了大致介绍，根据对比分析，选用钻孔灌注桩作为基坑的挡土结构物；选钢筋混凝土内支撑作为支撑结构体系。然后对排桩+内支撑支护方式进行了详细的手算。采用深层水泥搅拌桩作为基坑四周的止水帷幕。基坑内降水设计采用喷射井点降水+集水坑排水。并列出了基坑支护施工组织设计要求和监测方案。并绘制了基坑支护平面布置图、支护结构剖面图、配筋图及节点大样详图等。同时，采用理正软件进行了基坑支护电算。
毕业论文关键词：深基坑；钻孔灌注桩；钢筋混凝土内支撑；深层水泥搅拌桩。
Abstract The graduation design is an important part of undergraduate study. It can cultivate our ability to solve problems ,for later a good professional basis for entering the wokeplace.The project of merchants bank building deep excavation design is located in Suzhou industrial Park,east of Wansheng Street,north of Wangdun Street and southbound of Central River.The building consists of the main building and the podium ,underground garage .The foundation pit area is about 8000m2and the perimeter is 400m.The main building area excavation depth is 9.65m and the podium area is 5.65m.
This project is designed according to the Excavation Foundation Design Principals of approaching safe reliability, the economical-reasonable and convenient construction and guaranteeing project time limit.The design first introduces the ways of foundation pit shoring and decide to use bored piles as retaining structure and inclined steel pipe bracing concrete bracing as bracing structures afer comparing.Then I made a detailed hand calculation for pilling +inner brace support .This design adopted deep churning piles as detaining water pile construct around the foundation pit .With the purpose of dewatering, we use sump and well point .Besides , I have listed the foundation pit construction design requirements and monitoring programs and drawed excavation floorplan,supporting strutrue sections,reinforcement detailing drawings and other large sample nodes. Meantime ,I also have used the soft of Lizheng to carry out the excavation Computing.
Key Words:deep foundation pit;bored piles;the reinforced concrete inner brace;deep cement mixing piles.
目 录
第一章 绪论 1
1.1选题的目的 1
1.2本课题的理论与实际意义 1
1.3基坑工程的学术背景 1
1.5存在的问题 2
1.6本课题主要研究内容 2
1.7研究方法、步骤 3
1.7.1研究方法 3
1.7.2具体步骤 3
第二章 基坑基本概况 5
2.1工程简介 5
2.2地层分布规律及工程性质 5
2.3场地水文地质条件 8
2.3.1地下水