钢板桩围堰在梅汕客专枫江特大桥承台施工中的应用

Application of Steel Sheet Pile Cofferdam in Pile Cap Construction of Fengjiang Bridge of Meizhou-Chaoshan Passenger Special Line Project

结合梅汕客专枫江特大桥承台施工采用钢板桩围堰技术,利用MIDAS/Civil建立有限元计算模型,对其钢板桩围堰工程不同施工阶段中钢板桩的最大应力、最大变形、支撑的最大应力等进行分析。在此基础上,结合规范公式计算分析了基坑稳定性及抗倾覆稳定性。结果表明,围堰结构的设计满足强度、刚度、稳定性要求。

Combined with the steel sheet pile cofferdam technology used in the foundation construction of Fengjiang Bridge of Meizhou-Chaoshan passenger special line project,the finite element calculation model is established by MIDAS/Civil,and the maximum stress and the maximum deformation of steel sheet pile and the maximum stress of the support in different construction stages of steel sheet pile cofferdam project are analyzed.On this basis,the stability and anti-overturning stability of foundation excavation are calculated and analyzed with the code formula.The results show that the design of cofferdam meets the requirements of strength,stiffness and stability.