论文总字数:49196字
摘 要
论文作者签名:_____导师签名:____日期:____
摘 要
,对于城市地下空间的合理开发利用已经成为一种趋势,也是城市可持续发展的必然要求。特别是近几年来,随着大型土木工程的建设,基坑工程也在往大规模、大深度方向发展。而且随着基坑所处位置的逐步闹市化,对基坑的要求也不再止步于基坑自身的稳定,还要考虑周围建筑物的安全。现实中,由于设计或者施工过程中存在的一些问题而导致的基坑工程事故屡见不鲜。因此,不断加强基坑工程设计的理论研究、改进和完善基坑设计方案、提高施工技术水平已日益显得迫切和重要。
针对依托工程,进行深基坑支护设计,能够针对该基坑挖深和平面尺寸、工程地质条件及周边环境等对基坑支护进行设计,并查阅相关文献,结合其他相关资料,对基坑工程设计要点进行分析、设计和计算,熟练掌握使用基坑设计软件和CAD画图软件,验证次基坑支护的安全性,并提出一定的合理化建议,对工程施工有一定的意义。
关键词:;
Abstract
FENG Yukun
With the constantly development of Chinese urbanization, a good sense of urban underground space organization has become a trend as well as the necessary demand for the sustainable development of the urban areas. In recent years, the deep foundation pit engineering find its way to become larger and deeper in the demand of the large size civil engineering construction, Moreover, as the situation of the deep foundation pit approaching the main downtown area, the requirement for the deep foundation pit do not only satisfied in maintain the stability of foundation pit, but also should ensure the safety of the surrounding building. As the history events suggest, it is very common that some problems which exist in design progress or the construction progress can cause large foundation accident. Therefore, it is becoming increasingly urgent and important to continuously strengthen the research of foundation pit, and to improve and perfect the design scheme and improve the construction technology level as well.
We aim at Zhangjiagang Jinlong Building foundation pit engineering project, and carry on the deep foundation pit supporting design. We will learn the deep foundation pit digging and plane size, the engineering geological conditions and the surrounding environment, clear position terrain and natural geographical situation, and understand the conditions of engineering geology and hydrogeology, determine the bearing capacity of foundation and the foundation scheme. We will set the site seismic fortification intensity, and consider the environmental geotechnical problems as well. We will also conduct foundation pit dewater plan and slope stability plan. By consulting relevant literature, combined with other related information, we will proceed the analysis of the foundation pit engineering, as well as the design and calculation. We will be skilled use of foundation pit design software and CAD drawing software, in order to verify the safety of foundation pit supporting, and put forward some reasonable proposal, which will be of certain significance to the engineering construction.
Keywords: Foundation pit supporting; Pit dewater; Survey amd design; Slope stability
目 录
摘 要 1
Abstract 2
第一章 绪论 5
1.1 引言 5
1.2 本次毕业设计的主要内容 5
第二章 基坑支护的常见类型和设计原理 6
2.1 支护技术原理 6
2.2 主要的支护形式 6
2.2.1 放坡开挖 6
2.2.2 排桩支护 6
2.2.3 锚杆支护 7
2.2.4 土钉墙支护 7
2.2.5 深层搅拌桩支护 8
2.2.6 地下连续墙 8
第三章 工程概况和工程地质条件 9
3.1 工程概况 9
3.1.1 基本概况 9
3.1.2 主体结构和基坑概况 9
3.1.3 基坑周边环境 10
3.2 工程地质及水文地质概况 12
第四章 基坑支护设计计算 16
4.1 设计依据 16
4.2 设计与施工采用规范、规程 16
4.3 设计思路(本工程特点) 16
4.4 基坑支护结构选型 17
4.5 基坑支护设计准备 18
4.5.1 基坑支护设计参数 18
4.5.2 基坑支护结构设计计算 19
4.6 基坑支护结构计算 19
4.6.1 AB段基坑支护结构计算 19
4.6.2 BC段基坑支护结构计算 29
4.6.3 CD段基坑支护结构计算 38
4.6.4 DE段基坑支护结构计算 40
4.6.5 EF段基坑支护结构计算 42
4.7 坑中坑基坑支护结构计算 53
4.8 圈梁计算 54
4.8.1 冠梁计算 55
4.8.2 支撑计算 56
4.8.3 立柱验算 57
4.9 基坑降水设计 59
第五章 基坑设计和施工要求 61
5.1 支护结构施工要求 61
5.1.1 基坑主要施工顺序 61
5.1.2 钻孔灌注桩施工要求 61
5.1.3 钢筋工程施工要求 61
5.1.4 圈梁、支撑及拉板施工要求 62
5.1.5 双轴深搅桩施工要求 63
5.1.6 加筋水泥土桩锚施工要求 63
5.1.7 土钉墙施工要求 64
5.2 土方开挖施工要求 65
5.3 降水井施工要求 66
5.4 基坑监测要求 67
5.5 应急措施 68
5.6 其他说明 69
第六章 结论和展望 71
6.1 结论 71
6.2 展望 71
参考文献 72
致 谢 74
附 录 75
第一章 绪论
1.1 引言
随着科技的发展,基坑支护技术也在不断发展前进,在许多方面取得很大的成功。,由于不断,周得,基度越大,使得施面战。
深程是一个综有明显区域工题,深基护结构的设算仍平衡理基础。基衡的态。土度会随间的流降,因部分体在工然态。工程实践的经验告诉我们:变间的因素量,省略。
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