某水闸闸室变形原因分析及设计经验总结

Experiences and causal analysis for sluice chamber deformation of a sluice

某水闸建于沿海一内河河口上,地基属软基,经一段时间运行后节制闸门架发生了内缩变形,导致闸门无法正常启闭。通过对该枢纽建设、运行期全过程的综合分析和三维有限元计算,得出门架内缩变形的主要原因为建筑物间的沉降差和沉降缝的设置不当,而施工期的变位和沉船、岸边超载作用则加剧了门架的内缩。在此基础上,总结了闸室产生内缩变形的若干设计经验和教训。

A sluice is built on soft foundation at estuary of a river.After a period of operation,the internal shrinkage deformation took place at the control gate frame and resulted in failures of gate open and closure.Through comprehensive analysis and 3D FEM calculation on construction and operation period of the sluice,we discovered that internal shrinkage deformation was caused by structure settlement difference and un-appropriate joint design.And displacement during construction period,bank overloading and sunk ships aggravated the internal shrinkage deformation.We summarized the experiences lessons of design resulting internal shrinkage deformation.