Analysis on the Construction of Steel Pipe Pile Cofferdam for the Main Bridge Bearing Platform of Chizhou Yangtze River Highway Bridge
Based on the engineering background of Chizhou Yangtze River Highway Bridge,this paper introduces the design scheme of steel pipe pile cofferdam in detail.In order to evaluate the safety of the design scheme of steel pipe pile cofferdam for the bearing platform,a three-dimensional numerical model is established by finite element software to simulate the whole process of foundation pit construction,and the surface settlement law on long and short sides of the foundation pit and the horizontal deformation law of steel pipe pile are analyzed.The construction technology of steel pipe pile cofferdam of Z4#main pier bearing platform is further introduced.The results show that the foundation pit construction has a more significant influence on the surface settlement on the long side of the foundation pit and the horizontal deformation of the steel pipe pile,and both are within the controllable range,indicating that the layout scheme is reasonable and safe.
Yangtze River Highway Bridgesteel pipe pile cofferdambearing platformfinite element analysis
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