A Study on the Design of a New Three-Dimensional Seismic Isolation Bearing Based on an Improved Genetic Algorithm for Bridge Engineering

被引:2
|
作者
Sheng, Ying [1 ,2 ]
Yang, Zhenchao [1 ]
Meng, Yu [1 ]
Jia, Bin [1 ,2 ]
机构
[1] Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang 621010, Peoples R China
[2] Southwest Univ Sci & Technol, Shock & Vibrat Engn Mat & Struct Key Lab Sichuan P, Mianyang 621010, Peoples R China
来源
APPLIED SCIENCES-BASEL | 2024年 / 14卷 / 20期
基金
中国国家自然科学基金;
关键词
three-dimensional seismic isolation bearing; bridge engineering; sensitivity of the design parameters; improved genetic algorithm; good seismic isolation effect;
D O I
10.3390/app14209453
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
(1) Background: In most cases, passive isolation control methods are commonly used for the seismic isolation design in bridge engineering. However, passive seismic isolation devices, due to their non-adjustable performance parameters, struggle to achieve effective seismic isolation across a wide frequency range of 0 Hz to 20 Hz in response to random and varying seismic loads. (2) Methods: The sensitivity of the design parameters of the seismic isolation bearing was analyzed using the optimization center gradient method, and an improved genetic algorithm was employed to quickly optimize and obtain the optimal design parameters. (3) Results: The effectiveness of the three-dimensional seismic isolation bearing was validated through experiments. (4) Conclusions: The multi-factor sensitivity analysis approach used in this study for designing novel isolation bearings is applicable not only to seismic design in bridges but also serves as a reference for parameter design in isolation bearings requiring medium to high precision in seismic performance.
引用
收藏
页数:14
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