邯郸市康奈大厦基坑支护设计（深度4.75m） 土木工程专业学士学位论文.docVIP

毕业设计说明书 邯郸市康奈大厦基坑支护设计（深度4.75m） 专 业：土木工程 姓 名： 指导教师： 河北工程大学土木工程学院摘 要 邯郸市康奈大厦位于邯郸市陵园路北侧，西临邯山南大街，建筑面积22849m2，地上8层，地下1层，框架剪力墙结构。该工程基础埋深5m，实际基坑开挖深度为4.75m，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（北侧）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，北侧距离邯山区实验小学只有3.41米，工程土质较差需采用排桩维护。南侧和其他侧面距离重要建筑物较远，均采用人工放坡度土钉墙支护，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 Kang Nai building locates in north side of Ling Yuan road of Han Dan city, and in the east of Han Shan South Avenue. It covers an area of 22.849m2 with on the ground is twenty-four layer and underground is one layer. It is the framework of shear wall structure. The works are based on depth of 5 m, the actual excavation depth is 4.75 m. according to the soil conditions of the site and similar excavation works experience of Han Dan City, to ensure the stability of the pit and save investment as much as possible. To be adopted soil nailing walls and piles + bolt row (north) to support the excavation. Through analyzing for the engineering geological conditions of this project, there are many building around this project. The distance of the project and Han Shan experiment primary school have only 3.41 meters, the instability of soil to be used row pile maintenance. The distance from the south side and others to important buildings is further away. So it is to be used soil nail wall support. In the pit supporting the design process, there has analyzed four types of scheme one after another: 1. Cantilever pile support; 2.cement-soil wall 3. Soil nailing wall support, 4. Pile in row single-Fulcrum care. The cantilever piles supporting need the length of 16m, so it is unreasonable .Soil-nailing wall support is usually to be used for shallow pit. Through comparing the single fulcrum piles and piles of cantilever support, taking into account t