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1、畢業(yè)論文框筒結(jié)構(gòu)動(dòng)力時(shí)程分析專業(yè)土木工程學(xué)生韓璐指導(dǎo)教師胡啟平教授河北工程大學(xué)土木工程學(xué)院2012年6月9日摘要框筒結(jié)構(gòu)是建筑物外圍輪廓線處布置密柱深梁所形成的框架,其空間作用性好,在廣泛的建筑物高度范圍內(nèi),被認(rèn)為是一種經(jīng)濟(jì)有效的結(jié)構(gòu)體系。整體建筑主要由幾大框筒承擔(dān)重量,單元內(nèi)的墻體不起承重作用,真正的活性建筑,墻體可以隨意改變,甚至整層都可以隨意間隔。這是現(xiàn)在最先進(jìn)的結(jié)構(gòu)。(1)本文對(duì)框筒結(jié)構(gòu)分析采用薄壁桿件模型,考慮框筒的剪力滯后效應(yīng),從結(jié)構(gòu)總勢(shì)能出發(fā)應(yīng)用哈密頓對(duì)偶體系和精細(xì)積分法求得結(jié)構(gòu)的層剛度矩陣,用有限元法集成整體剛度矩陣。(2)對(duì)框筒結(jié)構(gòu)質(zhì)量矩陣的求解利用的是集
2、中質(zhì)量法,采用多質(zhì)點(diǎn)體系模型。對(duì)結(jié)構(gòu)的阻尼矩陣,采用的是常用的瑞雷阻尼矩陣,取質(zhì)量矩陣和剛度矩陣的線性組合。(3)本文采用初值問(wèn)題的精細(xì)積分法進(jìn)行結(jié)構(gòu)的動(dòng)力時(shí)程方程分析。(4)利用MATLAB語(yǔ)言編制相應(yīng)的計(jì)算程序,通過(guò)具體的算例分析,得出在多遇地震作用下框筒結(jié)構(gòu)的地震反應(yīng)值。關(guān)鍵字:高層框筒;剪力滯后;哈密頓對(duì)偶體系;精細(xì)積分法;動(dòng)力方程求解。AbstractTheframetubestructureisthebuildingoutercircleoutlinelineplacedecorationairtightpillartheframeformedbydeepbea
3、m,itsspacefunctiongood,attheextensivebuildingisinsidethehighscope,bethoughttoisakindofeconomiceffectivestructuresystem.Thewholebuildingismainlyundertakenweightbyseveralbigframetubes,thewallintheunitnotriseacceptandre-actanduse,realofactivitybuilding,thewallcanatwillchange,evenwholeallcanat
4、willpartition.Thisisthemostadvancedstructurenow.(1)Thistextanalyzestoadoptathinwallpoleapiecetotheframetubestructuremodel,consideraftertheshearlag,Accordingtothetotalpotentialenergyofstructures,theHamiltoniandualsystemsofcoordinationanalysisandpreciseintegralalgorithmareestablishedforthefr
5、ametubestructures.Thelayerelementstiffnessmatrixesareintroducedaccordingtopreciseintegrationmethod,andtheglobalstiffnessmatrixofstructurescanbeestablishedaccordingtothefiniteelementstiffnessintegrationmethod.(2)Itisaconcentratedqualitymethodtowhattheframetubestructurequalitymatrixsolvesexp
6、loitation,usingtheMulti-particlesystemmodelofframetubestructures;thelumpedmassmatrixesoftheentirestructuresareestablished.Dampingmatrixforthestructure,thepaperusesaRayleighdampingthatisalinearcombinationofstiffnessmatrixandmassmatrix.(3)Thedynamictimehistoryanalysisisprocessedontheframetub
7、estructurebasedonthepreciseintegrationmethodofthedoubleendboundaryvalueproblems.(4)MakeuseofMATLABlanguagetodrawuphomologouscalculationprocedure,thenewmethodofdynamictimehistoryanalysisoftube-in-tubestructurearegiven,and.andfrequentearthquakeseismicresponseval