Study on Deformation Characteristics of Pile-anchor Supporting Foundation Pit Under Complex Stratum
With the rapid development of foundation pit engineering,stratum distribution becomes more and more complicated.In order to study the deformation characteristics of pile-anchor support foundation pit under complex strata,this paper takes a building foundation pit project in Chengdu as the research object,adopts the finite element method to analyze the deformation characteristics of the foundation pit under pile-anchor support structure,and studies the changes of the deformation force of the retaining pile,the surrounding surface settlement,the uplift deformation of the bottom of the pit and the horizontal displacement of the surrounding soil.The results show that the horizontal displacement of the pile decreases and reaches the maximum at the top of the pile,while the bending moment increases first and then decreases.The surface settlement is distributed in the shape of"V",and the maximum surface settlement is 4m away from the side wall of the foundation pit,and then gradually decreases to 0.The uplifting range of the bottom floor of the foundation pit is about 20 m below the bottom floor,and the overall change is small.The research results can provide some reference for the design of foundation pit support structure under complex stratum.
万方数据
维普
