摘要随着城市的发展,地下空间不断得到开发和利用,由此产生了大量的深基坑工程。基坑工程是一项设计、勘察、结构、施工及环境保护等方面的综合性工程,它不仅要确保边坡的稳定,还要满足变形控制要求,保证基坑附近建筑物、道路、管线的正常运行。另一方面,由于支护大多是临时性结构,经济因素也是支护结构选型的主导因素之一。如何设计出安全、合理、经济的基坑设计方案,已然成为建筑工程界共同的课题。30426
针对工程特点,设计采用单支撑排桩、悬臂式排桩和放坡三种支护方式进行挡土,采用水泥土搅拌桩止水帷幕进行止水,坑内进行管井降。设计最后对基坑实时监测做了大致说明。
关键字 钻孔灌注桩 内支撑 降水 基坑监测
毕业论文设计说明书外文摘要
Title The Retaining and Proctection for Excavation Of Xingyu Huafu in Nantong
Abstract
With the development of cities, underground space has been used continually ,then
there must be a lot of deep excavation produced. Foundation Excavation is a very complex subject.It includes design, reconnaissance, structure,constraction and environmental protection. It requires not only ensure the stability of the slope, but also to meet the requirements of distortion control , to ensure the normal operation of the near buildings, roads, pipelines. On the other hand ,foundation pit is a temporary structure.So economic factor is also led an important aspect of its rationality. How to create a safe, reasonable and feasible design of foundation pit has become a common theme in the construction industry.
According to the characteristics of the engineering ,this paper designed strutted retaining structure,cantilevel retaining structure and grading for the excavation,and designed curtain for cutting off drains and dewatering wells.Finally this paper explicated foundation pit monitoring.
Keywords cast-in-situ bored pile strut dewatering monitoring
目次
1 绪论1
1.1 拟建场地土层情况1
1.2 水文地质条件2
1.3 场地周围环境情况3
1.4 支护结构方案3
1.5 基坑地下水控制4
2 支护设计计算6
2.1 B-C-D段内支撑,以J128为计算点6
2.2 内支撑结构体系计算14
2.3 D-E-F段放坡和悬臂桩支护结合,以BG52为计算点20
2.4 F-G段放坡和悬臂桩支护结合,以BG78为计算点26
2.5 A-B段自然放坡,以J65为例32
2.6 G-A段自然放坡,以BG28为例34
2.7 B-H-D段自然放坡,以J86为例36
3 基坑地下水控制37
3.1 截水帷幕设计37
3.2 基坑降水设计39
3.3 排水42
4 基坑监测43
4.1 监测项目43
4.2 监测方法43
4.3 监测频率46
4.4 监测报警指示46
结论47
致谢48
参考文献49
附录A 基坑勘勘探点布置图50
附录B 基坑支护总平面布置图51
附录 C 水平斜支撑布置图52
1 绪论
南通星雨华府工程位于南通港闸永和路和幸福大道交汇处。该工程拟建4幢22层住宅楼(11~14#楼)、1幢20层高层住宅楼(10#楼)、5幢18层高层住宅楼(1~4、7#楼)、2幢17层高层住宅楼(5~6#楼)、2幢16层高层住宅楼(8~9#楼)、1幢4~5层配套商业、1幢2层商业用房和1幢3层幼儿园。11~14#楼地下室底板埋深为±0.00m下-9.80m,其余楼层下地下室底板埋深为±0.00m下-6.60m(±0.00m相当于1895国家高程4.50m)。 南通某小区基坑支护设计:http://www.751com.cn/gongcheng/lunwen_26123.html