主副格不等长的直腹式格型钢板桩海墙数值分析

直腹式格形钢板桩难以避免会出现主副格入土深度不同的情况。依托工程实例,分析了主副格不等长格形结构的受力特性,提出了计算中的重点与难点问题。建立三维数值模型对主副格不等长的直腹式格型钢板桩海墙进行稳定性、变形与受力计算,分析了减小副格入土深度的可行性。结合工程应用提出了一种将主副格不等长的格型钢板桩结构等效为二维模型计算的方法。分析成果对格形钢板桩结构的推广与工程应用具有借鉴意义。

Numerical analysis of straight-web sheet pile cellular seawall structure with unequal main cell and arc cell toe-levels

It is difficult to avoid the different depths of the main cell and arc cell of straight-web sheet pile cellular into the soil.Based on the engineering example,the mechanical characteristics of the structure with unequal main cell and arc cell length are analyzed,and the key and difficult problems in the calculation are put forward.The three-dimensional numerical model is established to calculate the stability,deformation,and stress of the straight-web sheet pile cellular seawall with unequal main cell and arc cell toe-levels,and the feasibility of reducing the depth of the arc cell sheet pile is analyzed.Combined with the engineering application,a new equivalent calculation method is proposed,which is using a two-dimensional model to calculate the sheet pile cellular seawall with unequal main cell and arc cell toe-levels.The research can be used as a reference for the popularization and engineering application of this structure.