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在对岸桥结构进行振动台地震模拟试验时,模型的设计应遵循动力相似理论。现以3种动力相似律(弹性相似律、重力相似律、弹性力-重力相似律)为指导,分别推导了集装箱码头岸边起重机(简称岸桥)原型结构和1∶15缩比模型的相似比例因子,使用有限元软件对原型结构及3种缩比模型的动态行为进行仿真分析。研究结果表明,按不同相似律设计的缩比模型与原型结构的动态特性和地震响应存在一定的相似之处和一定的差别,可视研究问题的不同,采用不同的相似律进行缩比模型设计。
When simulating the shaking table of the quayside bridge structure, the model design should follow the theory of dynamic similarity. Guided by three kinds of dynamic similarity laws (elastic similarity law, gravity similarity law, elastic force - gravity similarity law), the similarities between the prototype structure of container quay shore crane Scale factor, the dynamic behavior of prototype structure and three kinds of scaling models are simulated by finite element software. The results show that there are some similarities and certain differences between the dynamic characteristics and the seismic response of the reduction ratio model and the prototype structure designed by different similarity laws, and the different similarity laws can be used to design the reduction ratio model .