毕设基本摘要
摘 要
本设计是根据作者在广东韶冶4#污水池基坑支护工程工地的实地实习和参考相关资料、规范而做出的。根据场地工程地质条件,提出了几种不同的设计施工方案。因为深基坑工程的支护形式决定了基坑工程的安全性和经济性,因此,在满足深基坑支护工程安全性的条件下,根据基坑的性质、建筑场地的地质条件和周边环境,采用不同的支护结构的组合形式可大大降低深基坑工程的支护费用。本设计主要应用了排桩加内支撑这种具有代表性的方案。所有方案均运用等值梁法进行理论计算,根据对排桩及内支撑的受力分析,选择了两层钢管支撑。根据场地水文地质条件,经过比较,选用花管注浆作为止水帷幕。本文还设计了一整套相应的施工方案,包括施工工艺、支护监测以及施工管理。最后,作者还做了本工程的预算书,工程总造价为 1988649.07元,单价为1807.86元/m2。
关键词:深基坑;支护结构;水泥土桩;防渗帷幕;施工组织设计;预算
Abstract
According to the practice experience in construction site of building in Shaoguan and references and standards, the project of excavation engineering was designed. Based on the engineering geology, several possible solutions were given. Generally, the type of retaining structure of a deep excavation project determines the safety and economical efficiency of a deep foundation project. Based on the characteristics in engineering geology, hydrological geology and the environment, the reasonable retaining structure types used in deep foundation project may reduce a large amount of construction cost. The design was mainly compared with the typical schedules of pile line-brace, making calculation in theory by equality beam , considering the environmental influence. And according to the mechanics analysis, building material (two layers of steel pipes) was chosen. Based on the condition in site’s hydrological geology, compared with several schedules, the author chose the cement-soil pile as the water-proof curtain. A complete scheme was also designed, including construction process, measure to bracing structure and construction management. Finally, this design did budget for the project. The total cost of the project is 1988649.07 Yuan RMB, that is, 1807.86Yuan RMB per square meter.
Key words: deep excavation; bracing; cement-soil pile; curtain;construction;budget (By Tang Zhicheng ,Supervisored by Dr.Zhang Keneng)
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