钢构件加固古建筑榫卯节点抗震试验  

Experimental Study on Aseismic Behaviors of Chinese Ancient Tenon-mortise Joint Strengthened by Steel Components

作　　者：周乾[1,2] 闫维明[1] 周宏宇[1] 张博[1] 

机构地区：[1]北京工业大学工程抗震与结构诊治北京市重点实验室,北京100124 [2]故宫博物院,北京100009

出　　处：《应用基础与工程科学学报》2012年第6期1063-1071,共9页Journal of Basic Science and Engineering

基　　金：国家自然科学基金项目(50878010);故宫博物院科研基金项目(KT2007-4)

摘　　要：为探讨古建筑榫卯节点的有效抗震加固方法,提出了一种钢构件加固方法.基于故宫太和殿某开间结构原型,制作了1∶8缩尺比例的木结构空间框架模型,考虑梁柱连接为燕尾榫形式,进行了低周反复加载试验,其中未加固构架试验进行了3组,加固试验进行了2组.基于试验相关数据,获得了节点的弯矩-转角滞回曲线和骨架曲线,对比分析了节点加固前后的耗能能力,刚度退化和延性等抗震指标.结果表明:钢构件加固榫卯节点后,节点拔榫量减小,抗弯承载力提高,刚度退化不明显,加固后的节点仍有较好的耗能能力和延性.因此钢构件具有良好的加固效果.To find an effective strengthening method for Chinese ancient tenon-mortise joint, a form of steel components was brought up. According to a Chinese ancient wooden building,5 groups （3 unstrengthened and 2 strengthened by steel components on tenon-mortise joints） of 1 ： 8 scale wooden frame models were built considering swallow tail joint type. By manual loading means, low cyclic reversed loading tests were carried out. For each joint, its moment-rotation hysteretic curves and skeleton curves were obtained, its energy dissipation capability, stiffiness degradation as well as deformation performance were analysed. Results showed that after the joint was strengthened by steel components, its tenon pull value became less, its stiffness and strength were enhanced, its stiffness degradation was not obvious, and it still had good energy dissipation capabilitv as well as ductility Thus the strengthening method is effective.

关 键 词：榫卯节点 抗震加固 钢构件 木结构 中国古建筑 

分 类 号：TU366.2[建筑科学—结构工程]