建筑钢结构进展2024，Vol.26Issue(4)：20-28,9.DOI:10.13969/j.cnki.cn31-1893.2024.04.003
PEC柱-钢梁摩擦耗能部分自复位组合框架抗震试验研究
Experiment on Seismic Performance of PEC Column-Steel Beam Composite Frame with Partial Self-centering Friction Damped Connection
摘要
Abstract
To further study the seismic behavior of PEC column-steel beam composite frame with partial self-centering friction damped connection,the design parameters such as pre-stressed bar length,PEC column section layout and connection type of column base were considered.Four specimens with 1:2 scale were designed for conducting quasi-static tests.Based on the observations and measured data in the test,the seismic performance of specimens such as hysteretic behavior,lateral-resistant stiffness,self-centering capacity and hysteretic energy-dissipation were studied.The results indicate that performance-based design target of"self-centering at design-earthquake stage,partial self-centering resulted from self-centering connection turn to accompanied by bearing-type connection at maximum considered earthquake stage"was achieved with rational dimension of slotted hole.All specimens have superior self-centering function for the residual drift less than self-centering limit(0.3％),and the energy-dissipation capacity is resulted from additional friction device at design-based earthquake stage.Even at maximum considered earthquake stage,the specimen still has partial self-centering function with load-bearing capacity enhancement,and the energy-dissipation capacity is provided by additional friction device with damage of structural element.Limited length of pre-stressed bar can improve the structural integrity.PEC column weak-axis layout reduce the integrity,while hinged connection at base of column weakens the integrity significantly.关键词
摩擦耗能部分自复位连接/PEC柱-钢梁组合框架/复位能力/滞回耗能/拟静力试验Key words
partial self-centering friction damped connection/PEC column-steel beam composite frame/self-centering capacity/hysteretic energy-dissipation/quasi-static test分类
建筑与水利引用本文复制引用
方有珍,高怡,杨勇,孙敏,孙国华..PEC柱-钢梁摩擦耗能部分自复位组合框架抗震试验研究[J].建筑钢结构进展,2024,26(4):20-28,9.基金项目
国家自然科学基金(52178149、51478286),江苏省教育厅重大科研项目(18KJA560003) （52178149、51478286）
