考虑临近建筑物影响的深基坑支护设计及变形规律研究
发布时间：2018-10-07 17:49
【摘要】：基坑支护工程的设计,既要考虑到整个支护结构在施工过程中的安全,又要考虑到结构和周围土体的变形,以保证周围环境相邻建筑物和地下公共设施等的安全。因此,如何确保基坑工程的安全可靠、经济合理、实用可行是当前现代化城市建设中一个非常重要和迫切的问题。本课题以西安某深基坑工程为背景,在考虑临近建筑物的情况进行支护结构设计,并研究其变形规律,主要进行了以下方面的研究:1、研究临近建筑物对基坑围护结构产生的附加应力,探讨不同距离、不同基础埋置深度的建筑物、不同基础类型对基坑围护结构的影响。2、总结深基坑常见的支护形式,支护结构的破坏形式,基坑变形规律、变形机理以及变形的影响因素和控制措施。3、根据实际工程背景,考虑临近建筑物对围护结构施加的附加应力,计算出各个工况下的内力、支点力、弯矩,进行深基坑支护的设计。4、运用数值模拟软件,模拟工程开挖,验证支护设计的安全性和合理性;并针对不同临近建筑物的距离、基础埋深进行模拟,研究其对深基坑开挖变形的影响。5、结合数值模拟结果和工程实测数据,进一步验证支护设计。同时分析该地区深基坑开挖的变形规律,为该地区类似工程提供一定的设计依据。
[Abstract]:In order to ensure the safety of adjacent buildings and underground public facilities, the design of foundation pit supporting engineering should not only consider the safety of the whole supporting structure during the construction process, but also consider the deformation of the structure and surrounding soil mass. Therefore, how to ensure the safety, reliability, economy, practicality and feasibility of foundation pit engineering is a very important and urgent problem in the construction of modern cities. Based on a deep foundation pit project in Xi'an, the support structure is designed in consideration of adjacent buildings, and its deformation law is studied. This paper mainly studies the following aspects: 1, studies the additional stress generated by adjacent buildings on the foundation pit enclosure structure, and discusses the buildings with different distances and different foundation depths. The influence of different foundation types on the retaining structure of deep foundation pit is summarized. The common supporting forms of deep foundation pit, the failure form of supporting structure, the deformation law of foundation pit, the deformation mechanism, the influencing factors and control measures of foundation pit are summarized. According to the actual engineering background, Considering the additional stress applied by the adjacent building to the retaining structure, the internal force, the fulcrum force, the bending moment under various working conditions are calculated, and the design of deep foundation pit support is carried out. The numerical simulation software is used to simulate the excavation of the engineering. To verify the safety and rationality of the support design, and to simulate the depth of the foundation for different adjacent buildings, and to study its influence on the deformation of deep foundation pit excavation. 5. Combined with the numerical simulation results and the engineering measured data, Further verify the support design. At the same time, the deformation law of deep foundation pit excavation in this area is analyzed, which provides certain design basis for similar projects in this area.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU753
本文编号：2255104
[Abstract]:In order to ensure the safety of adjacent buildings and underground public facilities, the design of foundation pit supporting engineering should not only consider the safety of the whole supporting structure during the construction process, but also consider the deformation of the structure and surrounding soil mass. Therefore, how to ensure the safety, reliability, economy, practicality and feasibility of foundation pit engineering is a very important and urgent problem in the construction of modern cities. Based on a deep foundation pit project in Xi'an, the support structure is designed in consideration of adjacent buildings, and its deformation law is studied. This paper mainly studies the following aspects: 1, studies the additional stress generated by adjacent buildings on the foundation pit enclosure structure, and discusses the buildings with different distances and different foundation depths. The influence of different foundation types on the retaining structure of deep foundation pit is summarized. The common supporting forms of deep foundation pit, the failure form of supporting structure, the deformation law of foundation pit, the deformation mechanism, the influencing factors and control measures of foundation pit are summarized. According to the actual engineering background, Considering the additional stress applied by the adjacent building to the retaining structure, the internal force, the fulcrum force, the bending moment under various working conditions are calculated, and the design of deep foundation pit support is carried out. The numerical simulation software is used to simulate the excavation of the engineering. To verify the safety and rationality of the support design, and to simulate the depth of the foundation for different adjacent buildings, and to study its influence on the deformation of deep foundation pit excavation. 5. Combined with the numerical simulation results and the engineering measured data, Further verify the support design. At the same time, the deformation law of deep foundation pit excavation in this area is analyzed, which provides certain design basis for similar projects in this area.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU753
【参考文献】
相关期刊论文 前10条
1 张旷成;李继民;;杭州地铁湘湖站“08.11.15”基坑坍塌事故分析[J];岩土工程学报;2010年S1期
2 胡时猛;曾鼎华;王闪闪;;成都某深基坑工程支护方案优化设计[J];岩土工程界;2007年01期
3 梁晓丹;宋宏伟;刘刚;;地下工程对地面既有高层建筑影响的数值分析[J];西安科技大学学报;2006年01期
4 郭伟,苏仲杰;水平变形对地表建筑物的动态损坏过程分析[J];煤矿开采;2005年06期
5 金小荣,俞建霖,祝哨晨,龚晓南;基坑降水引起周围土体沉降性状分析[J];岩土力学;2005年10期
6 俞洪良,陆杰峰,李守德;深基坑工程渗流场特性分析[J];浙江大学学报(理学版);2002年05期
7 俞建霖,龚晓南;基坑工程变形性状研究[J];土木工程学报;2002年04期
8 黄春娥,龚晓南,顾晓鲁;考虑渗流的基坑边坡稳定分析[J];土木工程学报;2001年04期
9 平扬,白世伟,徐燕萍;深基坑工程渗流-应力耦合分析数值模拟研究[J];岩土力学;2001年01期
10 刘兴旺,施祖元,益德清,吴世明;软土地区基坑开挖变形性状研究[J];岩土工程学报;1999年04期
相关硕士学位论文 前3条
1 华正阳;深基坑开挖对近距离建筑的安全影响研究[D];中南大学;2014年
2 赵志俊;基坑开挖对邻近建筑物变形影响数值分析[D];合肥工业大学;2010年
3 蔡智云;深基坑地下连续墙减小邻近建筑沉降的作用研究[D];西安科技大学;2005年
，本文编号：2255104
本文链接：https://www.wllwen.com/jianzhugongchenglunwen/2255104.html
