Optimal design for rubber concrete layered periodic foundations based on the analytical approximations of band gaps and mapping relations  

作　　者：Wu Qiaoyun Xu Zhifeng Xu Peishan Zeng Wenxuan Chen Xuyong 

机构地区：[1]School of Civil Engineering and Architecture,Wuhan Institute of Technology,Wuhan 430073,China [2]State Key Laboratory for Health and Safety of Bridge Structures,Wuhan 430034,China [3]Wuhan Urban Construction Group Co.,Ltd.,Wuhan 430022,China

出　　处：《Earthquake Engineering and Engineering Vibration》2024年第3期593-608,共16页地震工程与工程振动（英文刊）

基　　金：National Natural Science Foundation of China under Grant Nos.52078395 and 52178301;the Open Projects Foundation of the State Key Laboratory for Health and Safety of Bridge Structures under Grant No.BHSKL19-07-GF;the Dawn Program of Knowledge Innovation Project from the Bureau of Science and Technology of Wuhan Municipality under Grant No.2022010801020357;the Science Research Foundation of Wuhan Institute of Technology under Grant No.K2021030。

摘　　要：The seismic performance of rubber concrete-layered periodic foundations are significantly influenced by their design,in which the band gaps play a paramount role.Aiming at providing better designs for these foundations,this study first proposes and validates the analytical formulas to approximate the bounds of the first few band gaps.In addition,the mapping relations linking the frequencies of different band gaps are presented.Furthermore,an optimal design method for these foundations is developed,which is validated through an engineering example.It is demonstrated that ensuring the superstructure’s resonance zones are completely covered by the corresponding periodic foundation’s band gaps can achieve satisfactory vibration attenuation effects,which is a good strategy for the design of rubber concrete layered periodic foundations.

关 键 词：periodic foundation band gap vibration attenuation seismic isolation optimal design 

分 类 号：TU435[建筑科学—岩土工程]