自复位变摩擦阻尼器增强榫卯节点抗震性能研究
Research on Seismic Performance of Mortise-tenon Joint Using Self-resetting Variable Friction Dampers
姚超 1赖正聪 1张彧 1张雨珩1
作者信息
- 1. 昆明理工大学建筑工程学院,云南 昆明 650031
- 折叠
摘要
研究橡胶碟簧自复位变摩擦阻尼器榫卯节点抗震性能,参照西南地区传统木结构典型做法,制作直榫和台阶透榫节点进行低周反复加载试验,设计增强和未加固试件,对比榫卯节点破坏形态、滞回曲线和骨架曲线.研究结果表明,增设SFD试件拔榫量得以有效降低,榫头断裂、劈裂现象得到显著改善;不同节点滞回曲线均呈Z字形,未加固节点滑移现象更为突出;经SFD加固后的节点滞回曲线更加饱满,耗能能力、承载力和刚度均有显著提升.
Abstract
The seismic performance of mortise-tenon joint using disc spring rubber self-resetting variable friction dampers is studied.Referring to the typical practices of traditional wooden structures in Southwest China,two types of joints for straight tenon and step through tenon were made for low cycle repeated loading tests.Two sets of four components were designed by reinforced and unreinforced with dampers.Comparing the failure modes,hysteresis curves and skeleton curves of two sets of mortise-tenon joints.The results show that the amount of tenon removal for specimens with added dampers can be effectively reduced,and the phenomenon of tenon fracture and splitting can be significantly improved.The hysteresis curves of both groups of joints show a Z-shaped shape,and the slip phenomenon of unreinforced joints is more prominent.After being reinforced by dampers,the hysteresis curves of the two types of joints are more plump,the energy dissipation capacity bearing capacity and stiffness are significantly improved.
关键词
减震/阻尼器/抗震性能/拟静力试验/滞回曲线Key words
shock absorption/damper/seismic performance/quasi-static test/hysteresis curve引用本文复制引用
基金项目
云南省科技厅重点研发项目(202003AC100001)
云南省教育厅项目(2020J0061)
出版年
2024
NETL
NSTL
万方数据