深基坑设计计算书.doc

3 毕业设计（论文） 工程名称 南京某地下车库工程深基坑支护设计（方案B) 交 通 学 院 专 业 勘查技术与工程 姓 名 张长江 学 号 1803090124 起讫日期 2013.4.1-2013.6.1 指导教师 徐洪钟 2013 年 05 月 22 日 南京某地下车库工程深基坑支护设计（方案B)m，拟采用明挖施工。 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。 为了尽可能避免基坑对周围环境的影响，本着“安全可靠、经济合理、技术可行、施工方便”原则，基坑四周采用Φ1000mm，桩间距1200mm的钻孔灌注桩，两层钢筋混凝土支撑作为支撑结构。 整个基坑采用“外止内排”的降水方案，四周采用单排三轴深搅桩形成一个封闭的止水帷幕，基坑内采用明沟排除地下水。 关键词：深基坑 支护结构 搅拌桩 钢筋混凝土支撑 钻孔灌注桩 The design of foundation pit for Energy stations heat source room Abstract The proposed energy stations heat source room works located in Nanjing Gulou District, north of technology all the way to the east Jinjiang Road, west Qingjiang Road. The proposed total area of ??4300 square meters energy stations, are equipped with a layer of basement, pit length 120m, width 35m, circumference of about 310m, excavation depth 10m, intends to adopt open-cut construction. Combined with the engineering geology, environmental, deepened, and many other factors to determine a safe and reliable support scheme; Excavation for the foundation and basement construction to create a safe and dry construction environment; Considering there are buildings and adjacent pit road (under a water, electricity, gas and other pipelines), to ensure safety, the distortion control design. To minimize the impact on the surrounding environment pit, in a safe, reliable, economical, technically feasible, convenient construction principle, the pit around the use Φ1000mm, bored pile spacing of 1200mm, two reinforced concrete support as support structure. Entire excavation using stop outside the inner row, the precipitation scheme, surrounded by a single row of trible deep mixing pile axis form a closed sealing curtain, used within the sump pit exclude groundwater. Key words: Foundation pit; Bracing structure; Deep mixing pile; Reinforced concrete bracing; Nondisplacement pile 目 录 摘 要 I ABSTRACT II 第一章 支护结构设计方案综合说明 1 1.1 工程概况 1