交通荷载作用下深基坑支护结构稳定性分析

Analysis on stability of deep foundation pit supporting structure under traffic loads

以沈阳华府二期深基坑工程为主要研究对象,研究道路交通荷载对于在建深基坑支护结构的稳定性的影响。通过改变影响基坑稳定性的交通荷载系数及支护结构相关参数,以有限元软件ADINA为计算工具对基坑进行多次数值模拟,得出各参数的改变与支护结构变形之间的关系,并通过与实际现场检测数据进行对比,得到一系列的结论,发现在城市道路交通荷载作用下,主要影响因素为大量交通车辆的运行所产生的静载(包括车辆载重、交通量道路距基坑的距离)与震动产生动载以及基坑本身的自身特性的影响,对基坑支护结构方案的优化有一定的指导意义。

Based on the deep foundation pit project of Hua-Fu in Shenyang, study of road traffic loads under the stability of deep foundation pit bracing structure,after many times numerical simulation of foundation pit with ADINA, the relationship between parameters and deformation of supporting structures are summed up by changing relevant parameters of foundation pit and supporting structure. And through compared with actual data, got a series of conclusion, found in urban road traffic loads, the main influence factors for the operation of traffic generated by static load （include vehicle weight, the distance from the foundation pit road traffic ） and vibration dynamic load and produce their own features of the foundation pit itself influence. It can offer reference to optimization of foundation pit supporting structural scheme.