含内嵌卯口耗能器的榫卯节点抗震性能试验研究  

Experimental study on seismic performance of mortise-tenon joint with embedded dampers

作　　者：陆伟东[1] 吴伟强 施程凯 刘杏杏[1] LU Weidong;WU Weiqiang;SHI Chengkai;LIU Xingxing(College of Civil Engineering, Nanjing Tech University, Nanjing 211816, P. R. China)

机构地区：[1]南京工业大学土木工程学院,南京211816

出　　处：《土木与环境工程学报（中英文）》2022年第2期30-37,共8页Journal of Civil and Environmental Engineering

基　　金：国家自然科学基金(51678298)。

摘　　要：针对木结构榫卯节点抗震加固和性能提升的需求,提出采用内嵌卯口耗能器增强榫卯节点性能的技术,并制作了包括未增强、单层增强及双层增强的5组缩尺榫卯节点模型。通过开展抗震性能试验研究,对不同厚度、层数的卯口耗能器增强榫卯节点与未增强榫卯节点的抗震性能进行对比,分析了不同参数的卯口耗能器对榫卯节点抗震性能指标的影响。结果表明:内嵌卯口耗能器具有双向耗能、多点屈服、可设计性强等特点,可大幅提升榫卯节点的抗震性能,有效抑制节点的拔榫现象;耗能器增强节点相较于未增强节点,承载力有小幅提升,耗能能力有大幅提升,而初始刚度有50倍以上的大幅提升;耗能器的钢板厚度和层数是影响榫卯节点抗震性能的主要因素,且厚度对于耗能器加固榫卯节点力学性能的影响最大;与单层耗能器相比,双层耗能器对榫卯节点的加固性能更加卓越。In response to the needs of seismic reinforcement and performance improvement of the mortise-tenon joints in wood structure buildings,this paper proposed the use of embedded dampers to enhance the performance of the mortise-tenon joints and made five groups of scaled mortise-tenon joint models including unreinforced,single-layer reinforced and double-layer reinforced embedded dampers.Through the test research of seismic performance,the seismic performance of the mortise-tenon joints with different thickness and number of layers was compared with that of the joints without reinforcement,and the seismic performance of embedded dampers with different parameters on the joints of mortise-tenon were analyzed.The results show that the embedded dampers have the characteristics of two-way energy dissipation,multi-point yielding and strong designability,which can greatly improve the seismic performance of the mortise-tenon joints and effectively suppress the tenon pulling phenomenon of joints;compared with the unreinforced joint,the embedded dampers-enhanced joints has a small increase in bearing capacity,the energy consumption capacity has been greatly improved and the initial stiffness has been greatly improved by more than 50 times;the steel plate thickness and the number of layers of the embedded dampers are the main factors affecting the seismic performance of the mortise-tenon joints,and the thickness has the greatest impact on the mechanical properties of the mortise-tenon joints strengthened by the embedded dampers;the double-layer embedded dampers is more effective than the single-layer energy dissipater.

关 键 词：木结构 内嵌卯口耗能器 榫卯节点 抗震性能 

分 类 号：TU366.2[建筑科学—结构工程]