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摘要拟建工程位于苏州市平江区苏站路以北、芳草路以东地块，拟建项目南侧为苏州市火车站，西侧为在建的苏站路以北广场，北侧为和合街，距西侧规划地铁4号线最近处约130m,距东侧规划地铁2号线最近处约120m.工程由苏州平江港龙房地产有限公司兴建。本工程建（构）筑物包括一幢主楼24层，高100米，采用框架~核心筒结构，设地下一层设备用房；裙房5层，设地下二层车库。基坑面积约为20000m2，周长约为550m。
结合本工程地质、环境、挖深等诸多因素确定安全可靠的支护方案；为基坑土方开挖和地下室施工创造一个安全干燥的施工环境；考虑到邻近坑边有建筑和道路（下设有水、电、气等管线），为确保安全，以“变形”控制设计。
本着“安全可靠、经济合理、技术可行、施工方便”原则，将基坑分为南北段和东西段，南北段采用一排钻孔灌注桩作为挡土结构，东西段采用一排钻孔灌注桩加放坡作为挡土结构。钢筋混凝土支撑作为支撑结构体系。基坑四周采用深层搅拌桩作为止水帷幕。基坑内采用深井降水。53197
毕业论文关键词：深基坑; 支护结构; 挡土结构; 混凝土支撑; 钻孔灌注
Abstract The proposed project is located in Suzhou City Pingjiang Su Station Road to the north, east of Grass road block, the proposed project south of the Suzhou Railway Station, built by the Soviet Union in the west side of Station Road, north of Square, north of Harmony Street, from the west side of the planned Metro Line 4, the nearest about 130m, from the east side of planning the nearest subway line 2 of about 120m. works by Suzhou Ping Jiang Dragon Real Estate Co., Ltd. built. The project construction (structures), including a 24-storey main building, 100 meters high, with frame - core tube structure, located ground floor equipment room; podium five layer disposed story underground garage. Pit area of about 20000m2, circumference of approximately 550m.
Considering of the geologic environment, excavation depth of the foundation pit, to create an safe and dry surroundings for the earth work and basement, we carry out the design in control of displacement deformation, in order to keep main traffic roads and buildings safe and to protect pipelines of water, electricity and coal gas below the surface well.
The spirit of "safe, reliable, economical, technically feasible, convenient construction" principle, will pit into northern and southern sections and stuff segment, north and south sections using a row of bored piles as retaining structures, stuff section adopts a row Bored pile and grading as a retaining structure. Reinforced concrete support structure as a support system. Surrounded by deep mixing pile foundation as a waterproof curtain. Inside the pit using deep well dewatering.
Key words: Foundation pit; Bracing structure; Retaining structure;Steel concrete support; Nondisplacement pile
目录
第一章 绪论 - 1 -
1.1 选题的目的与意义 - 1 -
1.1.1选题的目的 - 1 -
1.1.2选题的意义 - 1 -
1.2 深基坑工程技术发展概况 - 1 -
1.2.1基坑工程的概念及特点 - 2 -
1.2.2我国深基坑工程的主要特点及存在的问题 - 2 -
1.2.3基坑工程技术的发展趋势 - 4 -
第二章 围护设计说明 - 5 -
2.1 工程概况 - 5 -
2.1.1 一般概况