深基坑工程支护结构的优选与稳定性分析

发布时间：2018-04-13 20:59

本文选题：深基坑 + 支护结构优选　；参考：《辽宁工程技术大学》2013年硕士论文

【摘要】：随着现代工业的迅速发展、城市规模的日益扩大,基坑工程一直在向大体积、大规模的方向拓展,加之经常在场地狭小的密集的建筑群中进行基坑的开挖施工,周边一般都存在高大建筑和市政设施等,对基坑的施工安全生产生的影响很大,对基坑稳定和位移控制的要求更加严格。如何选择适当的支护结构形式,以及进行稳定性分析,对于一个工程的顺利进行具有十分重要的意义。文章以沈阳佳兆业中心基坑工程为主要研究对象,对支护方案进行了优选,研究了周边建筑及交通荷载对于深基坑支护结构稳定性的影响,通过改变影响基坑稳定性的建筑物及交通荷载系数,以有限元软件MIDAS为计算工具对基坑进行多次数值模拟分析,获得了建筑物竖向作用力、建筑距离以及交通动静载荷作用的改变与支护结构变形之间的关系,对基坑支护结构方案的优化有一定的指导意义。
[Abstract]:With the rapid development of modern industry and the increasing expansion of city scale, foundation pit engineering has been expanding in the direction of large volume and large scale, and the excavation of foundation pit is often carried out in the dense complex with narrow site.There are generally tall buildings and municipal facilities in the surrounding area, which have a great influence on the safe production of foundation pit construction, and the requirements of foundation pit stability and displacement control are more stringent.It is very important for a project to choose the proper support structure form and analyze its stability.Taking the foundation pit engineering of Shenyang Jiazhao Center as the main research object, this paper selected the supporting scheme and studied the influence of surrounding building and traffic load on the stability of deep foundation pit support structure.By changing the building and traffic load coefficients which affect the stability of the foundation pit and using the finite element software MIDAS as the calculation tool, the foundation pit is numerically simulated and analyzed many times, and the vertical force of the building is obtained.The relationship between the change of building distance and traffic load and the deformation of supporting structure has a certain guiding significance for the optimization of foundation pit supporting structure.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU753

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