【摘要】：中國(guó)傳統(tǒng)木結(jié)構(gòu)建筑最大特點(diǎn)就是：各個(gè)構(gòu)件之間采用榫卯連接,巧妙的榫卯連接方式不用一釘一鐵,獨(dú)樹一幟。這種連接方式,使得建筑各節(jié)點(diǎn)剛?cè)嵯酀?jì),具有較好的抗震消能的作用。 國(guó)內(nèi)已有一些學(xué)者在傳統(tǒng)木結(jié)構(gòu)榫卯節(jié)點(diǎn)抗震性能方面開展了研究。目前在中國(guó)古代木結(jié)構(gòu)建筑研究領(lǐng)域,對(duì)榫卯節(jié)點(diǎn)是半剛性節(jié)點(diǎn)的認(rèn)識(shí)己取得了一致,研究主要途徑是數(shù)值模擬和試驗(yàn)研究相結(jié)合。由于傳統(tǒng)的榫卯連接形式是中國(guó)木結(jié)構(gòu)古建筑的特色,因此可查文獻(xiàn)中鮮有西方學(xué)者對(duì)中國(guó)傳統(tǒng)榫卯節(jié)點(diǎn)的研究。 第一步,本文闡述了中國(guó)古木結(jié)構(gòu)的歷史演變,分時(shí)期對(duì)當(dāng)時(shí)的建筑進(jìn)行了分析；簡(jiǎn)明敘述了中國(guó)古代木結(jié)構(gòu)建筑的基本分類以及中國(guó)現(xiàn)代木屋架的形式,與西方古建筑進(jìn)行了對(duì)比,提出了中國(guó)古木結(jié)構(gòu)建筑的的特點(diǎn)；詳細(xì)列舉了國(guó)內(nèi)外對(duì)于榫卯節(jié)點(diǎn)的研究情況。結(jié)尾引出了本文的研究方向及研究方法。 第二步,本文從材料本構(gòu)關(guān)系出發(fā),通過進(jìn)行一系列合理假設(shè),對(duì)透榫形式的節(jié)點(diǎn)進(jìn)行了受力機(jī)理的分析,并推導(dǎo)出透榫節(jié)點(diǎn)轉(zhuǎn)角-位移關(guān)系式,通過軟件繪出幾何曲線,利用試驗(yàn)數(shù)據(jù)對(duì)其進(jìn)行驗(yàn)證,證明了理論公式的合理性,為之后的學(xué)者在研究同類型節(jié)點(diǎn)的情況下提供了一定的參考價(jià)值。 第三步,本文進(jìn)行了ABAQUS有限元建模分析,闡述了建模過程,并對(duì)其中所選參數(shù)進(jìn)行了介紹,目的是由于我國(guó)應(yīng)用ABAQUS有限元軟件對(duì)木結(jié)構(gòu)節(jié)點(diǎn)計(jì)算的例子較少,這樣做可以有助于其他學(xué)者對(duì)此過程有一個(gè)直觀的了解,更是為了進(jìn)行深入研究提供一定參考,節(jié)省時(shí)間。 第四步,本文模擬了試驗(yàn)當(dāng)中兩種摩擦系數(shù)工況下節(jié)點(diǎn)的工作情況,與試驗(yàn)結(jié)果進(jìn)行對(duì)比,分析二者產(chǎn)生誤差的原因,并對(duì)模擬結(jié)果進(jìn)行了優(yōu)化修正,結(jié)果表明與實(shí)際情況吻合較好,證明了有限元模型的正確性。 第五步,本文在第四步的基礎(chǔ)上,自定義分析了另外兩種不同工況,并對(duì)這四種工況的節(jié)點(diǎn)進(jìn)行了對(duì)比分析,驗(yàn)證了模型的適用性。 本文在最后得出以下結(jié)論：在考慮節(jié)點(diǎn)摩擦情況下,對(duì)節(jié)點(diǎn)受力機(jī)理的分析結(jié)果是合理的；有限元模型的正確性和適用性；木結(jié)構(gòu)透榫節(jié)點(diǎn)具有良好的延性；隨著節(jié)點(diǎn)接觸面摩擦系數(shù)的增加,節(jié)點(diǎn)剛度、承載能力以及耗能能力均有一定提升。
[Abstract]:The biggest characteristic of Chinese traditional wooden structure architecture is that each component adopts tenon joint, and the ingenious tenon joint is unique without one nail and one iron. This kind of connection makes the joints of the building strong and soft, and has a better function of seismic energy dissipation. Some domestic scholars have carried out research on the seismic behavior of traditional wood structure tenon joints. At present, in the field of ancient Chinese wood structure research, the understanding that tenon joint is semi-rigid joint has been consistent. The main way of research is the combination of numerical simulation and experimental study. Because the traditional tenon and joint form is the characteristic of the ancient Chinese wooden structure, few western scholars have studied the Chinese traditional tenon joint in the literature. The first step is to expound the historical evolution of Chinese ancient wood structure, analyze the architecture in different periods, and concisely describe the basic classification of Chinese ancient wooden structure architecture and the form of Chinese modern wooden house frame. Compared with the western ancient buildings, this paper puts forward the characteristics of the ancient wooden structures in China, and enumerates the research of tenon joints at home and abroad in detail. At the end of this paper, the research direction and research methods are introduced. In the second step, starting from the constitutive relation of material, through a series of reasonable assumptions, the stress mechanism of the joint in the form of tenon and tenon is analyzed, and the relationship between angle and displacement of the joint is deduced, and the geometric curve is drawn by software. The rationality of the theoretical formula is proved by using the experimental data, which provides a certain reference value for the later scholars to study the same type of nodes. In the third step, the ABAQUS finite element modeling analysis is carried out, the modeling process is expounded, and the selected parameters are introduced. The purpose of this paper is to use the ABAQUS finite element software to calculate the joints of wood structures in our country. This can help other scholars to have an intuitive understanding of the process, but also to provide some reference for in-depth research and save time. In the fourth step, the paper simulates the working conditions of the joints under two kinds of friction coefficient conditions, compares the results with the test results, analyzes the causes of the errors, and optimizes the simulation results. The results show that the finite element model is in good agreement with the actual situation and proves the correctness of the finite element model. In the fifth step, on the basis of the fourth step, we define and analyze the other two different working conditions, and compare the nodes of the four conditions to verify the applicability of the model. In the end of this paper, the following conclusions are drawn: considering the joint friction, the analysis results of the joint stress mechanism are reasonable, the finite element model is correct and applicable, the wood structure has good ductility; With the increase of the friction coefficient of the joint, the stiffness, bearing capacity and energy dissipation capacity of the joint are improved to a certain extent.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU366.2;TU311

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本文編號(hào)：2213460