强降雨作用下基坑的稳定性研究

Based on the background of foundation pit engineering of Beijing Yao-scientist detection lab, in order to solve the large soil foundation pit deformation problem under the action of Beijing once-in-a-century heavy rainfall, this paper had been carried on system research with methods of numerical simulation and field measurement. With the simulation software FLAC3D, it is analyzed the evolution law of the horizontal displacement of foundation pit under the condition of no support and designed support. The basic data of the deformation of foundation pit after supporting is also recorded by means of field monitoring. The paper analyses the reason of large displacement happened in foundation pit under the condition of heavy rainfall. The control measures to the stability of deep foundation pit are carried out under this special condition and the proper reinforcement means are determined. It can provide the basis for the foundation pit deformation control on the similar condition.