【摘要】：基于燕尾榫節(jié)點(diǎn)受力機(jī)理的分析,對(duì)燕尾榫節(jié)點(diǎn)的轉(zhuǎn)動(dòng)彎矩進(jìn)行了理論分析,推導(dǎo)了燕尾榫節(jié)點(diǎn)彎矩-轉(zhuǎn)角理論計(jì)算公式,并與試驗(yàn)結(jié)果進(jìn)行了對(duì)比分析,理論分析結(jié)果與試驗(yàn)結(jié)果吻合較好;在計(jì)算公式的基礎(chǔ)上,對(duì)燕尾榫節(jié)點(diǎn)轉(zhuǎn)動(dòng)彎矩的影響參數(shù)進(jìn)行了分析,結(jié)果表明:在一定范圍內(nèi),隨著摩擦系數(shù)的增大,燕尾榫節(jié)點(diǎn)的轉(zhuǎn)動(dòng)彎矩和初始轉(zhuǎn)動(dòng)剛度也逐漸增大;當(dāng)摩擦系數(shù)超過0.5時(shí),節(jié)點(diǎn)的初始轉(zhuǎn)動(dòng)剛度增加幅度逐漸減小;榫頭長度和榫頭的"收乍"角度的增大均能夠提高燕尾榫節(jié)點(diǎn)的轉(zhuǎn)動(dòng)彎矩以及初始轉(zhuǎn)動(dòng)剛度;榫頭高度的增大能夠一定程度地提高燕尾榫節(jié)點(diǎn)的轉(zhuǎn)動(dòng)彎矩,但對(duì)節(jié)點(diǎn)的初始轉(zhuǎn)動(dòng)剛度影響不大。所得結(jié)果可為古建筑木結(jié)構(gòu)的受力分析提供依據(jù)。
[Abstract]:Based on the analysis of mechanical mechanism of dovetail joint, the rotational moment of dovetail joint is theoretically analyzed, the formula of moment-angle calculation is derived, and the results are compared with the experimental results. The theoretical analysis results are in good agreement with the experimental results. On the basis of the calculation formula, the influence parameters of rotational moment of dovetail joint are analyzed. The results show that: in a certain range, with the increase of friction coefficient, the rotational moment and initial rotational stiffness of dovetail joint also increase gradually; When the friction coefficient is more than 0.5, the initial rotational stiffness of the joint decreases gradually, and the increase of the tenon length and the "closing" angle of the tenon can improve the moment of rotation and the initial rotational stiffness of the joint. The increase of tenon height can improve the moment of joint rotation to some extent, but it has little effect on the initial rotational stiffness of the joint. The results can provide the basis for the mechanical analysis of the ancient building wood structure.
【作者單位】： 西安建筑科技大學(xué)土木工程學(xué)院;上海市建筑科學(xué)研究院上海市工程結(jié)構(gòu)安全重點(diǎn)實(shí)驗(yàn)室;陜西省建筑科學(xué)研究院;
【基金】：國家科技支撐計(jì)劃課題項(xiàng)目(2013BAK01B03-02) 國家自然科學(xué)基金項(xiàng)目(51108373,51278399) 國家文物局文物保護(hù)科學(xué)和技術(shù)研究課題項(xiàng)目(20110123) 陜西省青年科技新星項(xiàng)目(2013KJXX-56) 上海市工程結(jié)構(gòu)安全重點(diǎn)實(shí)驗(yàn)室開放課題項(xiàng)目(2014-KF05)
【分類號(hào)】：TU366.2

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本文編號(hào)：2339752