基坑支护方案设计及计算
关键词： 基坑工程 支护结构 土钉墙 放坡
毕业设计说明书（论文）外文摘要
Title The Design and Calculation of Excavation Support System
Abstract
With the development of urban construction, development and utilization of underground space has increasingly become a new hot spot for urban development . Foundation Pit Engineering is increasing and the scale of construction is also growing.Foundation Excavation is a very complex subject .It includes the calculation of structural strength and Structural Stability .At the same time ,it is controlled by the geological conditions and hydrological conditions .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.
In this paper, from the design process of the concrete excavation supporting , it can be done with the calculation.
Keywords Foundation pit engineering; Supporting structure ;
Soil nail wall ; Slope the ground
目 次
1 绪论 1
1.1 拟建场地土层状况 1
1.2 场地周边环境 2
1.3 设计思路及方案选择 3
1.4 设计参数 3
1.5 基坑设计计算方法 3
2 基坑支护结构设计计算 4
2.1 AB段一道支撑基坑设计计算，以J69为计算点 4
2.2 KA段一道支撑基坑设计计算，以J53为计算点 10
2.3 BC段土钉墙支护设计计算，以J73为计算点 16
2.4 CD段土钉墙支护设计计算，以J74为计算点 25
2.5 DE段自然放坡支护设计方案，以J33为例 34
2.6 EG段自然放坡支护设计方案，以J9为例 36
2.7 GH段自然放坡支护设计方案，以J6为例 38
2.8 HK段自然放坡支护设计方案，以J35为例 40
3 支撑体系结构及灌注桩设计计算 42
3.1 压顶梁兼做围檩结构设计算 42
3.2 支撑结构设计计算 45
3.3 连系梁结构设计计算 47
3.4 立柱结构设计计算 48
4 基坑监测 49
4.1 监测内容 49
4.2 监测点布置 49
4.3 监测要求 49
结 论 50
致 谢 51
参 考 文 献 52
附录 53
图1：基坑轮廓及分段 112
图2：基坑勘探点图 112
图3：基坑支护布置图（1） 113
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