中文摘要：

针对闸墩大幅振动问题,基于重力相似准则建立了闸墩整体水动力荷载测试模型,以试验所得水动力荷载作为输入,建立闸墩三维有限元模型,进行闸墩流激振动响应数值计算.比选了几种加固设计方案,以动位移作为控制指标研究加固减振效率与规律,最后得出一种既能保证加固效果又能降低工程造价的优化方案,可为同类加固减振工程提供参考.

英文摘要：

Aiming at the problem from the large amplitude vibration of the gate pier, a holistic hydrodynamic load testing model is established according to the gravity similarity criteria, while a 3 - D finite element model for the gate pier is also made by taking the hydrodynamic load got from the test as the input, and then a numerical calculation on the flow-induced vibration response of the gate pier is carried out. Thus, several strengthening schemes are compared and finally an optimal scheme that can not only ensure the strengthening effect, but also can lower the construction cost is obtained by studying the efficiency and law of the strengthening and vibration reduction with the dynamic displacement as the control index; which can provide a reference for the similar strengthening and vibration reduction project.