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（廣東省建筑科學(xué)研究院集團(tuán)股份有限公司， 廣州 510500）

［摘要］以木構(gòu)建筑透榫、半榫和燕尾榫為研究對(duì)象，采用有限元方法動(dòng)態(tài)模擬節(jié)點(diǎn)低周反復(fù)荷載試驗(yàn)，獲得不同節(jié)點(diǎn)彎矩轉(zhuǎn)角（M-θ）滯回曲線和骨架曲線，擬合出節(jié)點(diǎn)剛度退化曲線，并從中觀察透榫、半榫和燕尾榫的破壞形式，以及節(jié)點(diǎn)構(gòu)造對(duì)計(jì)算結(jié)果的影響。分析結(jié)果給出透榫、半榫和燕尾榫剛度隨外荷載和相對(duì)變形呈非線性變化，以及不同節(jié)點(diǎn)剛度特性的差異性刻畫。研究結(jié)果可為傳統(tǒng)木結(jié)構(gòu)建筑抗震性能研究提供理論基礎(chǔ)。

［關(guān)鍵詞］木構(gòu)建筑； 榫卯連接； 半剛性； 滯回曲線； 骨架曲線； 差異性刻畫

中圖分類號(hào)：TU366， TU311-1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)02-0113-04

Stiffness analysis on typical mortise-tenon joint in timberwork buildings

Kuang Yanyi

(Guangdong Provincial Academy of Building Research Group Co., Ltd.,  Guangzhou 510500, China)

Abstract:Taking penetration tenon, haunched tenon and swallow tail tenon of mortise-tenon joint in timberwork buildings as research object, the finite element method was used to dynamically simulate the low-cyclic repeated load test of the joint, to obtain the moment angle (M-θ) hysteretic curves and skeleton curves of different joints. The stiffness degradation curves of the joint were fitted, from which the failure modes of the penetration tenon, haunched tenon and swallow tail tenon were observed, as well as the influence of the joint structure on the calculation results. The results show that the stiffness of penetration tenon, haunched tenon and swallow tail tenon varies nonlinearly with the external load and relative deformation, and the different characteristics of the stiffness of different joints are described. The research results can provide theoretical basis for the study of seismic performance of traditional timberwork structure buildings.

Keywords:timberwork building; mortise-tenon joint; semi-rigid; hysteresis curve; skeleton curve; differential characterization description

作者簡介：匡妍藝，碩士，高級(jí)工程師，Email：kuangyanyi@yeah.net。