摘 要毕业设计依托工程项目横跨土坡，其中场地北侧级东侧位于坡顶部位，场地整平标高19.40m；场地西侧及南侧位于坡脚，坑底标高与坑外接近，不需采取支护措施。本次毕业设计主要针对北侧、东侧及东南角位置进行支护设计。基坑坑底标高12.90m，基坑挖深6.50m，支护周长约120m。根据毕业设计任务书要求，主要开展以下工作：（1）介绍常用的基坑支护形式，总结其特点及适用范围。（2）结合本基坑工程的特点，确定AB、CD段采用悬臂钻孔灌注桩支护，BC段采用钻孔灌注桩加一道预应力锚杆支护。（3）针对选用的支护结构形式进行设计计算，并采用理正深基坑软件7.0进行电算校核。（4）说明涉及的支护结构施工工艺要求，针对基坑周边环境保护要求，确定基坑监测要求及监测报警值。（5）绘制施工图，包括周边环境图、支护结构平面图、支护结构剖面及节点大样图。58407
毕业论文关键词：基坑支护；钻孔灌注桩；锚杆AbstractGraduation design based on projects across the slope, rank area north of the east islocated in the top spot, site leveling elevation of 19.40 m; Site on the west side and southside is located in the slope toe, elevation and pit bottom close, without supportingmeasures. This graduation design is aimed at the north, east and southeast corner positionof supporting design. Foundation pit bottom elevation of 12.90 m, digging deepfoundation pit is 6.50 m, supporting circumference of about 120 m. According to thedesign plan descriptions of the graduation requirements, mainly in the following work:(1) Introduced the commonly used form of foundation pit supporting, summarize itscharacteristics and application scope;(2) Combining with the characteristics of the foundation pit engineering,Determinethe AB and CD segment cantilever bored piles supporting,BC segment with bored piles +a pre-stressed bolt support;(3) In view of the forms of supporting structure design calculation,And USES theprinciple is to check in deep foundation pit software 7.0 computing.(4) That involves supporting structure construction technology requirements,In viewof the foundation pit surrounding environmental protection requirements,Determine thefoundation pit monitoring requirements and monitoring alarm value.(5) Draw construction plans, including the surrounding environment maps,supporting structure plan, profile and node support structure large drawing.
Keywords:Excavation; Bored piles; Anchor

目录

第一章绪论..1

1.1引言.1

1.2基坑工程发展现状2

1.3常用基坑支护结构类型3

1.4本课题主要研究内容4

第二章基坑支护设计方案说明...5

2.1工程概况.5

2.1.1一般概况..5

2.1.2结构概况..5

2.1.3环境概况..5

2.2基坑工程概况.6

2.2.1基坑概况..6

2.2.2工程地质概况.7

2.2.3水文地质情况.7

2.2.4有关土质参数.8

2.3支护方案设计8

2.3.1设计依据及使用规范.8

2.3.2整体设计原则.9

2.3.3本基坑工程特点..9

2.3.4支护方案..9

第三章基坑支护结构设计10

3.1AB段基坑支护剖面计算...10

3.2BC段基坑支护剖面计算...18

3.3CD段基坑支护剖面计算...28

3.4AB段电算校核36

3.5BC段电算校核48

3.6CD段电算校核...62

3.7手算与电算校核的比较...74

第四章施工技术要求..75

4.1干作业旋挖成孔灌注桩施工要求..75

4.2冠梁施工要求76

4.3预应力锚杆施工要求...76

4.4降、排水施工要求77

4.5土方开挖施工要求77

4.6基坑监测要求78

4.7应急措施80

4.8其他注意事项80

结束语82

大学青年教师周转公寓基坑支护设计+CAD图纸:http://www.751com.cn/gongcheng/lunwen_63321.html