建筑钢结构进展2024，Vol.26Issue(6)：22-32,11.DOI:10.13969/j.cnki.cn31-1893.2024.06.003
半刚接柱脚自复位装配式钢框架拟动力试验研究
Pseudo-Dynamic Test for a Self-centering Prefabricated Steel Frame with Semi-rigid Column Base
摘要
Abstract
In order to solve the problem that large plastic deformation may occur at the bottom column of self-centering prefabricated steel frame structure with rigid column base under precautionary earthquake or rare earthquake,a self-centering prefabricated steel frame structure with semi-rigid column base was designed.The pseudo-dynamic test was conducted on the substructure of the designed frame to compare the joint openings,energy dissipation capacity,stiffness degradation,prestress loss and strain changes of the frame under different levels of earthquakes with Taft,LOS000,and El-Centro waves.The test results show that the steel frame has good self-centering function and energy dissipation capacity under rare earthquake.The average prestress loss is only 1.58%at most,indicating that the application of prestress method in steel strands is reliable.The column base of the steel frame can remain elastic state,so that only the steel beam needs to be repaired after the earthquake,greatly reducing the repair cost.关键词
半刚接柱脚/钢框架/拟动力试验/自复位功能/预应力损失Key words
semi-rigid column base/steel frame/pseudo-dynamic test/self-centering function/prestress loss分类
建筑与水利引用本文复制引用
张艳霞,沈森,李杨龙,赵微..半刚接柱脚自复位装配式钢框架拟动力试验研究[J].建筑钢结构进展,2024,26(6):22-32,11.基金项目
国家自然科学基金(51778036),北京市教委科研计划(KZ201910016018),长江学者和创新团队发展计划(IRT_17R06) （51778036）
