Different support forms should be adopted at different positions of deep foundation pits under different envi-ronmental conditions.The side walls of adjacent deep foundation pits at the junction of different support methods (tran-sition section) are relatively sensitive areas,which are prone to deformation incompatibility.Therefore,it is necessary to analyze the sensitive areas at the junction.Taking the urban road intersection and complex surrounding environment of deep foundation pits in Zhengdong New District,Zhengzhou City as the research object,this work analyzed the joint of the double row pile support scheme and its adjacent pile anchor support scheme on the side wall of the foundation pit through a combination of numerical simulation,on-site monitoring,and rational calculation.The research results indi-cate that there are differences in horizontal stress,horizontal displacement,and soil pressure between the two support schemes during excavation of foundation pits.As excavation progresses,horizontal displacement and horizontal stress gradually increase.When excavating deeper,the horizontal displacement of the pile anchor support side at the same depth is greater than that of the double row pile support side,and the horizontal stress of the double row pile support side is greater than that of the pile anchor support side.
关键词
深基坑/监测/桩锚支护/双排桩支护/数值模拟
Key words
foundation pit/monitor/pile-anchor support/double row pile support/numerical simulation
维普
万方数据