本文選題：帶懸臂梁段 + 栓焊拼接　； 參考：《華南理工大學(xué)》2013年碩士論文

【摘要】：本文作為廣東省標(biāo)準(zhǔn)《鋼結(jié)構(gòu)設(shè)計(jì)技術(shù)規(guī)程》的一項(xiàng)，致力于推行節(jié)點(diǎn)半剛性在工程中的認(rèn)識與應(yīng)用。課題組以往作出大量工作，使用基于相關(guān)性的半剛性節(jié)點(diǎn)分析方法探討研究了一系列常用鋼節(jié)點(diǎn)的本構(gòu)關(guān)系模型。本文依托于試驗(yàn)，探究了帶懸臂梁段栓焊拼接節(jié)點(diǎn)的力學(xué)性能，繼而對其本構(gòu)關(guān)系進(jìn)行研究。 首先，對四個(gè)帶懸臂梁段栓焊拼接試件進(jìn)行了靜力加載試驗(yàn)研究，對節(jié)點(diǎn)承載能力、變形能力進(jìn)行了測量，對試件的破壞模式、轉(zhuǎn)動變形有了進(jìn)一步的認(rèn)識。通過試驗(yàn)數(shù)據(jù)的分析，建立節(jié)點(diǎn)彈性階段的M-θ模型曲線，得出相對應(yīng)試件的初始轉(zhuǎn)動剛度、屈服承載力、極限承載力等關(guān)鍵特性參數(shù)。 其次，使用有限元軟件ANSYS對兩種尺寸的試件進(jìn)行三維非線性有限元分析，，通過與靜力試驗(yàn)結(jié)果互相印證，說明了ANSYS可以很好的模擬帶懸臂梁段拼接節(jié)點(diǎn)的受力性能。 最后在正確有限元模型基礎(chǔ)上，利用概率統(tǒng)計(jì)的方法，使用ANSYS中的PDS模塊，經(jīng)過對既定節(jié)點(diǎn)與普通焊接梁柱節(jié)點(diǎn)靈敏度分析的對比，提出簡化模型的思路，大量分析后得出了適用于邊柱、中柱節(jié)點(diǎn)的彈性階段本構(gòu)關(guān)系模型。該模型在邊柱與中柱兩種情況下僅是彈性常量E的數(shù)值差別，且適用于較大的尺寸區(qū)段，實(shí)際中具有更強(qiáng)的適用范圍。繼而使用試驗(yàn)與有限元分析得出的相應(yīng)模型的初始剛度與公式結(jié)果進(jìn)行了比對，驗(yàn)證了公式的合理性。
[Abstract]:In this paper, as one of the technical specifications for steel structure design in Guangdong Province, the recognition and application of semi-rigid joints in engineering are put forward. The research group has done a lot of work in the past and studied a series of constitutive relation models of steel joints by using the semi-rigid joint analysis method based on correlation. In this paper, the mechanical properties of bolted joints with cantilever beam are investigated based on experiments, and the constitutive relations of joints are studied. First of all, the static loading test of four jointed specimens with cantilever beam segment is carried out, the bearing capacity and deformation capacity of the joints are measured, and the failure mode and rotational deformation of the specimens are further understood. Based on the analysis of the test data, the M- 胃 model curve of the elastic stage of the joints is established, and the key characteristic parameters such as initial rotational stiffness, yield bearing capacity and ultimate bearing capacity of the specimens are obtained. Secondly, the finite element software ANSYS is used to analyze the three-dimensional nonlinear finite element of two kinds of specimens. The results of static test show that ANSYS can well simulate the mechanical behavior of joints with cantilever beam. Finally, on the basis of the correct finite element model, using the method of probability and statistics, using the Liang Zhu module in ANSYS, after comparing the sensitivity analysis between the established joints and the common welded Liang Zhu joints, the idea of simplifying the model is put forward. After a lot of analysis, the constitutive relation model of elastic stage is obtained, which is suitable for the joint of side column and middle column. The model is only the numerical difference of the elastic constant E in the case of the side column and the middle column, and is suitable for the larger size section, and has a stronger applicable range in practice. Then the initial stiffness of the corresponding model is compared with the results of the formula by using the experiment and the finite element analysis, which verifies the rationality of the formula.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU391

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