核心筒部分悬挂结构振动台试验及分析
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摘要
提出核心筒部分悬挂结构体系,该体系将框架-核心筒结构有多道抗震防线的优势与核心筒悬挂结构减震性能好的优势相结合:在地震反应相对较小的底部采用框架-核心筒结构,在地震反应相对较大的上部采用核心筒悬挂结构,并采取在悬吊结构楼板与核心筒之间设置阻尼器和设置素混凝土连接键的构造措施,实现对结构地震反应的有效控制。进行了一个8层1:10比例的核心筒部分悬挂结构模型的模拟地震振动台试验研究,分析了结构在弹性阶段、弹塑性阶段的动力特性以及该结构在不同峰值加速度的El Centro地震波作用下的地震反应,建立结构分析模型,用SAP2000程序对该结构进行了弹性和弹塑性时程地震反应分析,计算结果与试验结果吻合较好。试验及分析表明,该结构具有良好的减震性能。
A type of core-tube partial suspension structure is proposed.It take advantage of both the core-tube suspension structure that is good in earthquake resistant performance and the frame core-tube structure that has more lines of seismic resistance,consisting of core-tube suspension with dampers and pure concrete blocks between core tube and suspension floors in the upper four-storey for strong seismic responses and frame core-tube in the bottom four-storey for weak seismic responses.The system can achieve effective control over earthquake responses.A shaking table test of a 1/10 scale model of this type of structure,involving elastic and elasto-plastic stages,is described.A dynamical model is formulated and the dynamic characteristics and earthquake responses of the structure under the El Centro wave are analyzed.The experimental results indicate that the structure performs well under seismic conditions.The elastic and elasto-plastic time-history analyses of the structure are conducted by using SAP2000,and the simulation results agree well with those of the experiment.
A type of core-tube partial suspension structure is proposed.It take advantage of both the core-tube suspension structure that is good in earthquake resistant performance and the frame core-tube structure that has more lines of seismic resistance,consisting of core-tube suspension with dampers and pure concrete blocks between core tube and suspension floors in the upper four-storey for strong seismic responses and frame core-tube in the bottom four-storey for weak seismic responses.The system can achieve effective control over earthquake responses.A shaking table test of a 1/10 scale model of this type of structure,involving elastic and elasto-plastic stages,is described.A dynamical model is formulated and the dynamic characteristics and earthquake responses of the structure under the El Centro wave are analyzed.The experimental results indicate that the structure performs well under seismic conditions.The elastic and elasto-plastic time-history analyses of the structure are conducted by using SAP2000,and the simulation results agree well with those of the experiment.
引文
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[12]陈勤,钱稼茹.钢筋混凝土双肢剪力墙静力弹塑性分析[J].计算力学学报,2005,22(1):13-19(Chen Qin,QianJiaru.Static elasto-plastic analysis of RC shear wall with onerow opening[J].Journal of Computational Mechanics,2005,22(1):13-19(in Chinese))
[13]曹万林,张建伟,田宝发,等.钢筋混凝土带暗支撑中高剪力墙抗震性能试验研究[J].建筑结构学报,2002,23(6):26-32(Cao Wanlin,Zhang Jianwei,Tian Baofa,et al.Experimental study of seismic behavior of mid-rise RC shearwall with concealed bracing[s J].Journal ofBuildingStructures,2002,23(6):26-32(in Chinese))
[14]张建伟,曹万林,田宝发,等.底层大空间带暗支撑剪力墙结构振动台试验研究[J].建筑结构学报,2004,25(6):44-51(Zhang Jianwei,Cao Wanlin,Tian Baofa,et al.Earthquake simulation test of RC shear wall with concealedbracings and large space on the ground floor[J].Journal ofBuilding Structures,2004.25(6):44-51(in Chinese))
[15]曹万林,黄选明,卢智成,等.钢筋混凝土带暗支撑核心筒抗震性能试验研究[J].地震工程与工程振动,2005,25(3):81-86(Cao Wanlin,Huang Xuanming,Lu Zhicheng,etal.Experimental study of seismic behavior of RC core-tubewith concealed bracings[J].Earthquake Engineering andEngineering Vibration,2005,25(3):81-86(in Chinese))
[2]张晖,朱伯龙,苏少军.悬挂结构层间减震控制系统试验及分析[J].建筑结构学报,1997,18(5):59-65(Zhang Hui,Zhu Bolong,Su Shaojun.Research on vibration absorptioncontrol system of suspension structure[J].Journal of BuildingStructures,1997,18(5):59-65(in Chinese))
[3]张耀华,梁启智,付赣清.巨型框架悬挂体系抗震原理及初步设计方法[J].工程力学,2000,17(2):10-17(ZhangYaohua,Liang Qizhi,Fu Ganqing.The earthquake resistantphilosophy and initial design of mega-frame with suspensionsystems[J].Engineering Mechanics,2000,17(2):10-17(inChinese))
[4]张晋,吕志涛.短肢剪力墙筒体结构模型的振动台试验[J].东南大学学报,2001,31(6):4-8(Zhang Jin,LüZhitao.Earthquake simulation test of short-leg shear wall tubemodel[J].Journal of Southeast University,2001,31(6):4-8(in Chinese))
[5]周坚,伍孝波.核筒悬挂结构自振特性研究[J].工程力学,2005,22(1):74-81(Zhou Jian,Wu Xiaobo.A study ofmodel-frequency behavior of core-wall suspension structure[J].Engineering Mechanics,2005,22(1):74-81(inChinese))
[6]曹万林,卢智成,张建伟.三控制型核心筒悬挂结构振动台试验研究[J].北京工业大学学报,2006,32(2):155-160(Cao Wanlin,Lu Zhicheng,Zhang Jianwei.Experimentalinvestigation on shaking table of core-wall suspensionstructure with three-term control divice[J].Journal of BeijingUniversity of Technology,2006,32(2):155-160(in Chinese))
[7]赵西安.现代高层建筑结构设计(上册)[M].北京:科学出版社,2000
[8]曹万林,卢智成.内藏X形钢板铅复合耗能器:中国,实用新型专利,ZL200420118884.2.[P].2006-03-08(CaoWanlin,Lu Zhicheng.Combined dissipators with concealedX-type steel plate and lead:China,Utility new type patentZL200420118884.2[.P].2006-03-08(in Chinese))
[9]卢智成,曹万林.内藏X形软钢板铅复合耗能器的试验研究[J].世界地震工程,2005,21(3):45-51(LuZhicheng,Cao Wanlin.Experimental study of combineddissipators with concealed X-type mild steel plate and lead[J].World Earthquake Engineering,2005,21(3):45-51(inChinese))
[10]Vulcano A,Bertero V V,Colotti V.Analytical modeling ofR/C structural walls[C]//Procs.9th WCEE,1988,6:41-46
[11]汪梦甫,周锡元.钢筋混凝土剪力墙多垂直杆非线性单元模型的改进及其应用[J].建筑结构学报,2002,23(1):38-42(Wang Mengfu,Zhou Xiyuan.The improved parallelmuti-component model for the nonlinear seismic responseanalysis and its application[J].Journal of Building Structures,2002,23(1):38-42(in Chinese))
[12]陈勤,钱稼茹.钢筋混凝土双肢剪力墙静力弹塑性分析[J].计算力学学报,2005,22(1):13-19(Chen Qin,QianJiaru.Static elasto-plastic analysis of RC shear wall with onerow opening[J].Journal of Computational Mechanics,2005,22(1):13-19(in Chinese))
[13]曹万林,张建伟,田宝发,等.钢筋混凝土带暗支撑中高剪力墙抗震性能试验研究[J].建筑结构学报,2002,23(6):26-32(Cao Wanlin,Zhang Jianwei,Tian Baofa,et al.Experimental study of seismic behavior of mid-rise RC shearwall with concealed bracing[s J].Journal ofBuildingStructures,2002,23(6):26-32(in Chinese))
[14]张建伟,曹万林,田宝发,等.底层大空间带暗支撑剪力墙结构振动台试验研究[J].建筑结构学报,2004,25(6):44-51(Zhang Jianwei,Cao Wanlin,Tian Baofa,et al.Earthquake simulation test of RC shear wall with concealedbracings and large space on the ground floor[J].Journal ofBuilding Structures,2004.25(6):44-51(in Chinese))
[15]曹万林,黄选明,卢智成,等.钢筋混凝土带暗支撑核心筒抗震性能试验研究[J].地震工程与工程振动,2005,25(3):81-86(Cao Wanlin,Huang Xuanming,Lu Zhicheng,etal.Experimental study of seismic behavior of RC core-tubewith concealed bracings[J].Earthquake Engineering andEngineering Vibration,2005,25(3):81-86(in Chinese))
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