The safety and stability of deep and large foundation pit are very important to the construction because of its complex geological conditions and hidden deformation.Taking the foundation pit occlusal pile support project of China Railway Construction South China Headquarters Building as an example,the simulation analysis and displacement calculation of occlusal pile support system under multiple working conditions are carried out with ABAQUS software.The results show that in the early stage of support,the middle part of the occluded pile is affected by soil pressure and pile strength,and the top and bottom of the occluded pile are affected by stretching.In the middle stage of support,with the increase of concrete strength and the fixing of central tie rod,the tensile displacement decreases gradually.In the later period of support,except for the large displacement of the boundary occluding pile and the bottom support,the other piles remain stable;The simulated displacement is consistent with the measured results and has high reliability.
关键词
深大基坑/咬合桩支护体系/有限元模拟/ABAQUS
Key words
deep foundation pit/occlusal pile support system/finite element modelling/ABAQUS
维普
万方数据