【摘要】：近幾個(gè)世紀(jì)以來(lái),鋼結(jié)構(gòu)發(fā)展迅速,鋼結(jié)構(gòu)的研究越來(lái)越重要。目前,梁柱強(qiáng)軸連接節(jié)點(diǎn)的力學(xué)性能的相關(guān)研究較多,但梁柱弱軸連接節(jié)點(diǎn)的力學(xué)性能的相關(guān)研究較少。為了探究梁柱弱軸連接節(jié)點(diǎn)的力學(xué)性能,研究了一種梁柱弱軸連接全焊型節(jié)點(diǎn),并研究了梁柱弱軸連接鋼框架結(jié)構(gòu)的力學(xué)性能,具體工作如下： 1.利用虛位移原理和彈性力學(xué)方法推導(dǎo)了梁柱弱軸連接節(jié)點(diǎn)初始轉(zhuǎn)動(dòng)剛度的計(jì)算公式,分析了梁柱弱軸連接節(jié)點(diǎn)的各參數(shù)變化對(duì)節(jié)點(diǎn)性能的影響。結(jié)果表明柱子的截面慣性矩和層高(即柱高)對(duì)鋼框架梁柱弱軸連接節(jié)點(diǎn)的初始轉(zhuǎn)動(dòng)剛度有很大的影響； 2.采用有限元方法分析了梁柱弱軸連接節(jié)點(diǎn)的力學(xué)性能。將理論分析得到的結(jié)果與有限元結(jié)果進(jìn)行了比較。理論推導(dǎo)得出的公式與有限元分析方法結(jié)果吻合良好,誤差不超過(guò)15%,該理論公式可以在實(shí)際工程計(jì)算中作參考； 3.提出了在平面鋼框架中分析梁柱弱軸連接節(jié)點(diǎn)力學(xué)性能影響的方法,且該分析方法考慮了二階效應(yīng)。接著又提出了分析結(jié)構(gòu)整體初始幾何缺陷的方法,形成了一套考慮結(jié)構(gòu)整體初始幾何缺陷的半剛性鋼框架的二階彈性的方法體系。采用FORTRAN程序?qū)⑸鲜龇椒w系編成了SEASF程序； 4.將該程序應(yīng)用于實(shí)際工程案例,研究了結(jié)構(gòu)整體初始幾何缺陷對(duì)框架結(jié)構(gòu)力學(xué)性能的影響,結(jié)果表明,結(jié)構(gòu)整體初始幾何缺陷對(duì)結(jié)構(gòu)力學(xué)性能的影響較大,在相同高度條件下,隨著跨數(shù)的增加,這種影響也隨之增加。研究了梁柱弱軸連接節(jié)點(diǎn)力學(xué)性能對(duì)鋼框架結(jié)構(gòu)力學(xué)性能的影響,結(jié)果表明,梁柱弱軸連接節(jié)點(diǎn)力學(xué)性能對(duì)框架結(jié)構(gòu)力學(xué)性能的影響較大,該影響的程度與框架跨數(shù)聯(lián)系不大。如果不考慮梁柱弱軸連接節(jié)點(diǎn)的力學(xué)性能,結(jié)構(gòu)的計(jì)算側(cè)移值將會(huì)小于結(jié)構(gòu)的真實(shí)側(cè)移值,給結(jié)構(gòu)帶來(lái)安全隱患。也研究了梁柱弱軸連接節(jié)點(diǎn)力學(xué)性能對(duì)鋼框架支撐結(jié)構(gòu)力學(xué)性能的影響,結(jié)果表明,梁柱弱軸連接鋼框架支撐結(jié)構(gòu)的抗側(cè)移剛度遠(yuǎn)大于梁柱弱軸連接純鋼框架結(jié)構(gòu)的抗側(cè)移剛度。梁柱弱軸連接節(jié)點(diǎn)的力學(xué)性能對(duì)鋼框架支撐結(jié)構(gòu)力學(xué)性能的影響較小。
[Abstract]:With the rapid development of steel structures in recent centuries, the research of steel structures is becoming more and more important. At present, there are many researches on the mechanical properties of Liang Zhu strong axis connections, but few on the mechanical properties of Liang Zhu weak axis connections. In order to investigate the mechanical properties of Liang Zhu weak axis joint, a kind of Liang Zhu weak shaft connection all-welded joint is studied, and the mechanical properties of Liang Zhu weak axis connection steel frame structure are studied. The main works are as follows: 1. Based on the principle of virtual displacement and the method of elasticity, the calculation formula of initial rotational stiffness of Liang Zhu weak axis connection joint is derived, and the influence of various parameters of Liang Zhu weak axis connection joint on the joint performance is analyzed. The results show that the moment of inertia and the height of the column (i.e. the height of the column) have great influence on the initial rotational stiffness of the steel frame Liang Zhu weakly connected joints. 2. The finite element method is used to analyze the mechanical properties of Liang Zhu weakly connected joints. The results obtained by theoretical analysis are compared with those obtained by finite element method. The theoretical formula is in good agreement with the finite element analysis method, and the error is not more than 15. The theoretical formula can be used as a reference in practical engineering calculation. A method for analyzing the influence of mechanical properties of Liang Zhu weak shaft joints in plane steel frame is proposed, and the second order effect is considered in the analysis method. Then, a method for analyzing the initial geometric defects of the whole structure is proposed, and a second order elastic method system of semi-rigid steel frame considering the initial geometric defects of the whole structure is formed. The above method system is programmed into SEASF program by FORTRAN program. 4. The program is applied to practical engineering cases to study the effect of the initial geometric defects of the whole structure on the mechanical properties of the frame structure. The results show that the initial geometric defects of the whole structure have a great effect on the mechanical properties of the structure, and under the same height conditions, As the number of spans increases, so does the effect. The effect of mechanical properties of Liang Zhu weak axis connection joints on the mechanical properties of steel frame structures is studied. The results show that the mechanical properties of Liang Zhu weak axis connections have great influence on the mechanical properties of frame structures, and the degree of influence is not related to the span number of frames. If the mechanical properties of Liang Zhu weak axis connections are not considered, the calculated lateral displacement of the structure will be smaller than the true lateral displacement of the structure, which will bring about a hidden danger to the safety of the structure. The effects of mechanical properties of Liang Zhu weak shaft connection joints on the mechanical properties of steel frame bracing structures are also studied. The results show that, The anti-lateral stiffness of steel frame bracing structure with Liang Zhu weak shaft connection is much higher than that of pure steel frame structure with Liang Zhu weak axis connection. The mechanical properties of Liang Zhu weakly connected joints have little effect on the mechanical properties of steel frame bracing structures.
【學(xué)位授予單位】：中南林業(yè)科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TU391;TU311

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王燕,李華軍,厲見(jiàn)芬;半剛性梁柱節(jié)點(diǎn)連接的初始剛度和結(jié)構(gòu)內(nèi)力分析[J];工程力學(xué);2003年06期

2 胡習(xí)兵;沈蒲生;舒興平;;帶轉(zhuǎn)動(dòng)彈簧的桿單元平面鋼結(jié)構(gòu)二階彈性分析[J];工程力學(xué);2007年04期

3 舒興平,沈蒲生;空間鋼框架結(jié)構(gòu)的非線性全過(guò)程分析[J];工程力學(xué);1997年03期

4 張文元,張耀春;高層鋼結(jié)構(gòu)雙重非線性分析的塑性鉸法[J];哈爾濱建筑大學(xué)學(xué)報(bào);2000年06期

5 史文譜,劉迎曦,郭淑紅;最優(yōu)化算法的收斂準(zhǔn)則[J];計(jì)算力學(xué)學(xué)報(bào);2004年05期

6 陳愛(ài)國(guó),顧強(qiáng),蘇明周,李啟才;腹板雙角鋼梁柱連接循環(huán)荷載試驗(yàn)研究[J];建筑結(jié)構(gòu)學(xué)報(bào);2003年06期

7 徐偉良，，吳德倫;鋼筋混凝土框架全過(guò)程分析的非線性簡(jiǎn)化單元及其應(yīng)用[J];建筑結(jié)構(gòu)學(xué)報(bào);1995年03期

8 周奎,宋啟根,賈軍波;高等分析及其在鋼結(jié)構(gòu)設(shè)計(jì)中的應(yīng)用[J];建筑鋼結(jié)構(gòu)進(jìn)展;2002年02期

9 徐玉蓮;;空間梁柱半剛性節(jié)點(diǎn)弱軸連接的循環(huán)荷載試驗(yàn)[J];山西建筑;2007年26期

10 王新武,李鳳霞;采用上下角鋼的梁柱半剛性連接試驗(yàn)研究[J];施工技術(shù);2004年03期

本文編號(hào)：2140966