带刚臂的钢框架-混凝土核心筒结构的抗震性能分析
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摘要
对带有刚臂的钢框架-混凝土核心筒超高层结构进行有限元计算分析,并对不同的结构布置和结构内力的突变进行比较分析,研究了刚臂的位置、数量、节点的连接方式改变时,其地震作用下结构地震反应的一般规律.结果表明,在地震作用下,设置一道刚臂的最佳位置在0.466倍房屋高度处;刚臂的数量尽量多设,不仅能减小侧向位移,而且能够减小刚臂处钢柱内力的突变;外围钢框架与核心筒之间采用刚性连接对于结构的抗震性能最有利.
Steel frame-core wall structure with outriggers was analyzed through the finite element analysis,and the mutation of the internal force of the structure and the comparison of different arrangement of structure were studied.The seismic response of the location,quantity and connection forms were presented,and some design concepts were proposed for reference in the structural design of complicated tall buildings.The results have indicated that,under the earthquake,the best location is 0.466H when one outrigger is set,and the quantity should be set as many as possible,which can reduce the lateral displacement and the mutation of the internal force of the steel columns.It is advantageous to adopt the rigid connection between the steel frame and the core for the aseismatic performance of steel frame-core wall structure.
Steel frame-core wall structure with outriggers was analyzed through the finite element analysis,and the mutation of the internal force of the structure and the comparison of different arrangement of structure were studied.The seismic response of the location,quantity and connection forms were presented,and some design concepts were proposed for reference in the structural design of complicated tall buildings.The results have indicated that,under the earthquake,the best location is 0.466H when one outrigger is set,and the quantity should be set as many as possible,which can reduce the lateral displacement and the mutation of the internal force of the steel columns.It is advantageous to adopt the rigid connection between the steel frame and the core for the aseismatic performance of steel frame-core wall structure.
引文
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[3]张建勋.带刚臂超高层结构的力学性能分析[J].山东建筑工程学院学报,2000,15(4):29-33.ZHANG J X.Mechanical analysis of the supertall structure withstrengthened storeys[J].Journal of Shandong Institute of Archi-tecture and Engineering,2000,15(4):29-33.(In Chinese)
[4]CHUNMAN C.Optimal lateral stiffness design of tall buildings ofmixed steel and concrete construction[J].The Structural Design ofTall Buildings,2001,30(10):601-603.
[5]张令心,郭丰雨.钢-混凝土混合结构抗震研究述评[J].地震工程与工程振动,2004,24(3):51-56.ZHANG L X,GUO F Y.Review of seismic research on steel-con-crete mixed structures[J].Earthquake Engineering and Engineer-ing Vibration,2004,24(3):51-56.(In Chinese)
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[7]黄世敏,魏琏,衣洪建,等.高层建筑中水平加强层最优位置的研究[J].建筑科学,2003,19(2):4-10.HUANG S M,WEI L,YI H J,et al.Study on optimum locationof horizontal strengthened stories for high-rise structures[J].Building Science,2003,19(2):4-10.(In Chinese)
[8]熊军,吴庆荪,魏军.高层建筑水平加强层最优位置分析[J].四川建筑科学研究,1997(1):2-5.XIONG J,WU Q S,WEI J.Analysis of optimum location of hori-zontal strengthened stories for high-rise structures[J].SichuanBuilding Science,1997(1):2-5.(In Chinese)
[9]HUANG S M,WEI L.Study on lateral displacement of high-risebuilding structure with horizontal strengthened stories[C]//TheFifth International Conference on Tall Building.1998.
[10]HOENDERKAMP J C D,SNIJDER H H.Simplified analysis offacadeRigger braced high-rise structures[J].Structural Design ofTall Buildings,2000(9):309-319.
[11]赵西安.现代高层建筑结构设计[M].北京:科学出版社,2000.ZHAO X A.Structural design of modern tall buildings[M].Bei-jing:Science Press,2000.(In Chinese)
[12]袁兴隆,张誉.高层建筑伸臂的最佳位置分析[J].四川建筑科学研究,1996,24(1):15-18.YUAN X L,ZHANG Y.Optimal outrigger location analysis of tallbuilding structures[J].Building Science Research of Sichuan,1996,24(1):15-18.(In Chinese)
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