本文選題：鋼-混凝土組合框架 + 三維精細(xì)有限元��； 參考：《中南大學(xué)》2014年碩士論文

【摘要】：摘要：國(guó)內(nèi)外對(duì)鋼-混凝土組合框架結(jié)構(gòu)抗震性能的研究主要以簡(jiǎn)單框架形式的擬動(dòng)力試驗(yàn)方法和桿系有限元分析為主,三維精細(xì)殼-實(shí)體有限元分析方法的應(yīng)用還比較少見(jiàn)。本文通過(guò)ABAQUS有限元分析軟件對(duì)多層鋼-混凝土組合框架結(jié)構(gòu)的抗震性能進(jìn)行三維精細(xì)有限元分析。主要研究?jī)?nèi)容如下： (1)介紹ABAQUS的基本分析方法,并基于本課題組提出的混凝土塑性-損傷本構(gòu)關(guān)系,以及鋼材彈塑性硬化單調(diào)加載本構(gòu)關(guān)系和混合強(qiáng)化循環(huán)加載本構(gòu)關(guān)系,介紹鋼-混凝土組合框架的建模方法以及模態(tài)分析方法,對(duì)其自振性能進(jìn)行分析,得到結(jié)構(gòu)的自振頻率。 (2)從靜力角度出發(fā),通過(guò)ABAQUS軟件對(duì)八邊形鋼管混凝土短柱進(jìn)行有限元分析與試驗(yàn)驗(yàn)證,提出八邊形鋼管混凝土軸壓短柱的承載力公式；從擬靜力角度出發(fā),利用ABAQUS有限元軟件對(duì)圓鋼管混凝土柱、方鋼管混凝土柱、鋼-混凝土組合梁、圓鋼管混凝土柱-鋼梁組合節(jié)點(diǎn)以及圓鋼管混凝土柱-鋼梁組合框架進(jìn)行滯回性能分析與試驗(yàn)驗(yàn)證；從擬動(dòng)力角度出發(fā),利用ABAQUS有限元軟件對(duì)已有的鋼-混凝土組合框架模型試驗(yàn)結(jié)果進(jìn)行彈塑性地震反應(yīng)分析與對(duì)比。 (3)采用合理的混凝土與鋼材本構(gòu)關(guān)系,利用ABAQUS有限元軟件建立3×3跨10層鋼-混凝土組合框架的三維精細(xì)有限元實(shí)體模型,分析其在八種工況地震波作用下的彈塑性時(shí)程反應(yīng),分析該框架結(jié)構(gòu)的位移時(shí)程反應(yīng)、各關(guān)鍵部位鋼管、核心混凝土、鋼梁和栓釘?shù)膽?yīng)力時(shí)程反應(yīng),探討地震作用下鋼-混凝土組合框架結(jié)構(gòu)中鋼管與混凝土的相互作用、栓釘?shù)暮哪茏饔?顯示該框架結(jié)構(gòu)在地震波作用下的良好動(dòng)力性能。
[Abstract]:Absrtact: the research on seismic behavior of steel-concrete composite frame structures at home and abroad mainly consists of pseudo-dynamic test method in simple frame form and finite element analysis of bar system, and the application of three-dimensional finite-shell solid finite element analysis method is relatively rare. In this paper, the seismic behavior of multi-story steel-concrete composite frame structure is analyzed by using Abaqus finite element analysis software. The main research contents are as follows: (1) the basic analysis method of Abaqus is introduced, and based on the plastic damage constitutive relation of concrete proposed by our group, The constitutive relation of elastoplastic hardening monotone loading and mixed reinforced cyclic loading is introduced. The modeling method and modal analysis method of steel-concrete composite frame are introduced, and its natural vibration performance is analyzed. From the static point of view, the finite element analysis and experimental verification of octagonal concrete filled steel tubular short columns are carried out by Abaqus software, and the bearing capacity formula of octagonal concrete filled steel tubular short columns is put forward. From the point of view of quasi-static force, using Abaqus finite element software, the concrete filled circular steel tube column, square steel tube concrete column and steel-concrete composite beam are studied. The hysteretic behavior of circular concrete-filled steel tubular column-steel beam composite joints and circular concrete-filled steel tubular column-steel beam composite frames are analyzed and tested. By using Abaqus finite element software, the elastoplastic seismic response analysis and comparison of the experimental results of the existing steel-concrete composite frame model are carried out. (3) A reasonable constitutive relation between concrete and steel is adopted. Using Abaqus finite element software, the 3D fine finite element solid model of 3 脳 3 脳 3 span 10 story steel-concrete composite frame is established. The elastic-plastic time-history response and displacement time-history response of the frame structure under the action of seismic waves under eight conditions are analyzed. The stress time history response of steel tube, core concrete, steel beam and bolt in every key position is discussed. The interaction between steel tube and concrete and the energy dissipation of bolt in the steel-concrete composite frame structure under earthquake are discussed. The results show that the frame structure has good dynamic performance under seismic waves.
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU398.9

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