葛洲坝二江弧门工作模态测试

水工弧形钢闸门抵御静力作用一般都能满足,但有时在特殊水动力荷载作用下会出现强烈振动而破坏,因此有必要对弧门的动特性有比较清楚的了解。本文先采用理论对弧门动态特性进行了理想条件的计算,利用计算结果对实测方案作指导,再采用工作模态测试方法对在役弧门动态特性进行测量,并将理论计算和实测结果作比较,说明工作模态实际测量的意义。

Operation mode test for radial gate at the second channel in Gezhouba project

Because radial gate may be damaged by special hydrodynamic loads,that analysis on the dynamic characteristic of radial gate is necessary.This paper calculated the dynamic characteristic of radial gate theoretically first,and the result was used as reference to test scheme.Further,operation mode test method was adopted in measurement.By comparison of calculated and measured results,the meaning of operation mode measurement was presented here.