摘要
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。
In the seismic simulation test of the shaking table for the bridge structure,the design should follow the dynamic similarity theory of the model.Based on the three dynamic similarity laws of elastic similarity law,the gravity similarity law and the elastic force-gravity similarity law,similar factor was deduced respectively between the shore crane structure and shrink similar of the model by1∶15.In the processing,the dynamic behavior of the three kinds of shrinkage ratio model was analyzed using finite element software.The research results show,with the different shrinkage ratios model and different laws,there are some similarities and some differences in the similitude design and the prototype structure＇s dynamic characteristics.Therefore,it should be designed by different law of similitude based on different visual research problems.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2014年第5期75-79,共5页
Journal of Wuhan University of Technology
基金
国家自然科学基金(51275369)
关键词
动力相似理论
缩比模型
岸桥结构
振动台试验
相似律
dynamic similarity theory
scale model
container crane structure
shaking table test
similarity law
