新型球型钢支座耗能减震元件试验研究与数值模拟
Experiment and Numerical Simulation of a New Seismic Damping Member with Spherical Steel Bearings
温旭 1姜兰潮 1秘红丹 2刘立妍3
作者信息
- 1. 北京交通大学 土木建筑工程学院,北京 100044
- 2. 北京市建筑工程研究院有限责任公司,北京 100036
- 3. 建研地基基础工程有限责任公司,北京 100013
- 折叠
摘要
在万向减震球型钢支座的基础上对其弹簧元件进行耗能设计,提出了一种新型耗能减震球型钢支座,采用钢板弹簧叠加耗能钢作为耗能减震元件.通过单调拉伸加载试验和循环拉伸加载试验,研究了Q295钢材的耗能能力,采用拟静力试验和数值分析相结合的方法,分析了支座耗能减震元件的滞回性能和自复位性能;将该新型球型钢支座应用于网架结构中,考察其耗能减震能力.研究结果表明,Q295钢材的滞回曲线饱满,具有一定的耗能能力;减震元件的耗能减震性能较好,并且具有一定的复位能力;相较于一般的弹性减震支座,新型球型钢支座可以吸收部分地震能量,从而进一步降低结构的动力响应.
Abstract
Based on the universal seismic damping spherical steel bearings,a new seismic damping spherical steel bearing is proposed,which uses the steel plate spring superimposed with seismic damping steel as the damping component.The energy dissipation capacity of Q295 steel was studied by means of monotonic tensile test and cyclic tensile test.The hysteretic and self-centering properties of seismic damping members of the bearings were analyzed by means of quasi-static test and numerical analysis.The new spherical steel bearing was applied to the grid structure to investigate its damping and energy dissipation capacity.The results indicate that the hysteretic curve of Q295 steel is full and has certain energy dissipation capacity.The new seismic damping member has a better energy dissipation performance and a certain self-centering capacity.Compared with the general elastic bearings,the new spherical steel bearings can dissipate part of the seismic energy,and thus further reduce the dynamic response of the structure.
关键词
耗能减震/球型钢支座/自复位/有限元分析/拟静力试验Key words
energy dissipation/spherical steel bearing/self-centering/finite element analysis/quasi-static test引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据