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(1 凱里學院建筑工程學院， 凱里 556011；2 江蘇科技大學土木工程與建筑學院， 鎮(zhèn)江 212100)
［摘要］為研究我國西南地區(qū)民族木結(jié)構(gòu)中的主要榫卯節(jié)點——明銷透榫節(jié)點的抗彎性能及其影響因數(shù)，設計了兩個足尺節(jié)點進行單調(diào)加載試驗，獲得了其彎矩-轉(zhuǎn)角關(guān)系曲線以及失效形態(tài)，并運用ABAQUS軟件對影響節(jié)點抗彎能力的因數(shù)進行數(shù)值模擬分析。研究結(jié)果表明，明銷透榫節(jié)點的失效主要是由于榫頭順紋受壓變形與卯口橫紋受壓撕裂破壞，柱與枋本身較為完好；穿銷透榫節(jié)點表現(xiàn)出更好的抗拔榫性能；明銷透榫節(jié)點的抗彎能力的強弱主要取決于枋的橫紋受壓變形能力的強弱；摩擦系數(shù)和榫頭高度的增加均可以顯著提升節(jié)點屈服彎矩，同時榫頭高度的增加使得節(jié)點的最大彎矩有較大幅度提升。
［關(guān)鍵詞］民族木結(jié)構(gòu)；明銷透榫節(jié)點；抗彎性能；順紋受壓變形；橫紋受壓變形；橫紋受壓撕裂破壞；摩擦系數(shù)；榫頭高度
中圖分類號：TU366-2 文獻標識碼：A文章編號：1002-848X(2021)18-0118-07
Research on flexural behavior of tenon joint with penetrating pin
WANG Zhanguang1, SHI Ang2, SHAO Jianhua2, WANG Tingting2
(1 College of Architectural Engineering, Kaili University, Kaili 556011， China；2 School of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang 212100， China)
Abstract: In order to study the bending performance and its influence factors of the tenon joint with penetrating pin, which are the main mortise and tenon joints of ethnic wood structures in Southwest China, two full-scale nodes were designed for monotone loading tests, and the moment-rotation curves and failure mode were obtained. The finite element software ABAQUS was used to simulate the factors that affect the bending capacity of the joints. The research results show that the failure of tenon and mortise joint with penetrating pin of the transverse groove of the socket is mainly due to the grain compression deformation of the tenon and the cross-grain compression tear failure, and the column and crossbeam are in good condition. The tenon joints with penetrating pin show better resistance to tenon performance. The strength of flexural behavior of the tenon joints with penetrating pin mainly depends on the strength of the cross-grain compression deformation ability of the crossbeam. The increase of the friction coefficient and the tenon height can significantly increase the yield moment of the joint, and the increase of the tenon height can greatly increase the maximum moment of the joint.
Keywords:ethnic wood structure； tenon joint with penetrating pin； flexural behavior; grain compression deformation; cross-grain compression deformation; cross-grain compression tear failure; friction coefficient； tenon height
*貴州省教育廳創(chuàng)新群體重大研究項目(黔教合KY字\[2017\]048)，貴州省科技計劃項目(黔科合LH字\[2019\]1288號)。
作者簡介：王展光，博士，Email:wzg3262396@163.com； 通信作者：邵建華，博士，教授，Email:shaojianhua97@163.com。
