In order to study the soil deformation rule of offshore deep foundation pit under pile-anchor sup-port system and considering the seepage effect of water flow,Midas GTS was used to simulate the excava-tion process of a deep foundation pit in Hainan province,and the existing data were analyzed.The results show that the first step after the excavation of the deep foundation pit is the most dangerous construction step.The maximum displacement of soil is 13.97 mm at the top of the pile,and the further the excavation support system becomes more perfect,the smaller the displacement change.The actual monitored maxi-mum displacement value is estimated to be 15.36 mm.At the position of steel waist beam and anchor cable,the maximum deformation shrinkage degree of the whole equivalent connecting wall is 6.6 mm,which accords with the actual deformation law.Therefore,Midas GTS can be targeted to guide the actual construction stage,can provide reference value for foundation pit monitoring layout setting points.
关键词
深基坑/三维有限元/Midas/GTS/基坑开挖
Key words
Deep foundation pit/Three-dimensional finite element/Midas GTS/Foundation pit excavation
维普
万方数据