基坑支护毕业设计--大厦基坑支护设计

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1、 毕业设计说明书（毕业论文） 邯郸市和谐大厦基坑支护设计(8.0m) 专 业：土木工程 姓 名： 指导教师： 2012 年 6 月 2 日 摘 要 邯郸市和谐大厦位于邯郸市区北部，西临建元小区，南侧隔路为建工物业办公楼，东临中华 北大街。建筑面积 33279.6m 2，主楼 20 层，地下 2 层，框架剪力墙结构。该工程基坑深 8m，局部 为 11m。根据场地的土层条件及邯郸市类似基坑工程的经验，为保证基坑的稳定性及尽量节省投 资，经方案比选，拟采用土钉墙技术及排桩+锚杆对该基坑进行支护。 通过对拟建场地的工程地质条件分析，本工程存周围建筑物较多，西侧距建元小区 6 层住宅 楼 10.7m,

2、距其围墙 8.9m，建元小区住宅楼基础埋深约 2.5m，水泥土搅拌桩复合地基，桩长约 4.0m。北侧偏西为热力加压站，基础埋深约 3m，距建筑物外边缘线约 4m，另外，南侧、东侧附 近有雨污水管线通过。但基础埋深 8m，因此工程基坑支护的重点主要控制基坑变形，以保证领近 建筑物的安全。经初步方案选择，本工程西北两面选择支护方案一(桩+锚杆)；基坑最南侧和东 侧采用支护方案二（土钉墙） ，两种支护方案。细部设计见后文说明。 在本次基坑支护设计过程中，先后分析了 4 种方案：1.悬臂桩支护； 2.水泥土搅拌桩 3.土 钉墙支护；4.单支点排桩支护。对于悬臂桩支护方案，通过计算，桩长需要 16m，桩

3、体所承受的 最大弯距较大，不合理；又因为土钉墙支护形式适合于较浅基坑，宜采用；通过对单支点排桩和 悬臂桩两种支护方案的比较，考虑到降低成本，最终决定采用单支点排桩支护，土钉墙支护， 关键词：基坑支护 土钉墙 排桩 Abstract the hexie building is located at the northern city of handan harmonious, west overlay yuan village, the road south for construction property office building, the east street in north C

4、hina. Floor area of 33279.6 m2, the main building 20 floors, underground 2 layer, the frame shear wall structure. The deep foundation pit engineering 8 m, local of 11 m. According to the soil condition and handan city similar foundation engineering experience, to ensure the stability of the foundati

5、on pit and try to save investment, the scheme is selected, is used to the soil nailed wall technology and row pile + anchor of the foundation pit support for. Through to the proposed site of the engineering geological conditions of the analysis, the engineering endures surrounding buildings more, th

6、e west village six floors of buildings from jianyuan 10.7 m, 8.9 m from its walls, jianyuan community based buried depth of residential building about 2.5 m, cement-soil pile composite foundation, pile length about 4.0 m. Pray for the north thermal pressure station, basic buried depth about 3 m, is apart from the outside the building for about 4 m edge, in addition, the south, the east near a wastewater pipeline through the rain. But the basic buried depth 8 m, so the focus of foundation pi