适量注芯混凝土砌块结构模型振动台试验研究
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摘要
通过对6层适量注芯混凝土小型空心砌块配筋砌体结构模型进行地震模拟振动台试验,分析结构体系的结构动力特性、加速度放大反应、最大层间位移角等,研究其在抗震设防烈度为7度构造措施条件下的结构抗震性能、屈服机制。试验结果表明:配筋砌体模型结构在地震作用下的整体变形仍以剪切变形为主;在输入不同地震波、不同峰值加速度时,结构横向所能承受的输入峰值加速度的平均值比纵向要高,横向变形大于纵向变形,说明结构纵向抗震能力要强于横向;圈梁、构造柱以及水平拉结筋构成的约束体系作用明显,结构在基本烈度地震作用下抗破坏能力较强,能够满足抗震规范规定的在7度区"大震不倒"的要求;结构在罕遇地震作用下也具有相当的抗震能力。
The paper focused on the seismic performance of a six-story reinforced concrete hollow block masonry structure with injection efficiency,through earthquake simulation test by shaking table.Based on previous research,the seismic performance,yielding mechanism and seismic capacity of the structure with construction measures under intensity 7 were examined.The experimental results show that monolithic deflection of reinforced masonry structure under different earthquake waves mainly exhibits shear deformation pattern.While inputting different peak acceleration of earthquake waves,the average of maximum accelerations of lateral walls is higher than longitudinal walls and lateral deformation is greater than lengthwise direction.Longitudinal seismic capacity is higher than lateral one.The experiment results also show that the confinement effects of tie beams,constructional columns and horizontal tie bars are obvious.The tested model definitely satisfies the requirement of 'collapse prevention under unexpected rare earthquake' at intensity 7 seismic area.Adequate seismic capacity under rare earthquake can be obtained for the six-story concrete block building with tie beams and columns,allowing reasonable increases in code-specified maximum number of story and the maximum total height of concrete hollow blocks masonry structures with tie beams and columns and tie bar is permissible.
The paper focused on the seismic performance of a six-story reinforced concrete hollow block masonry structure with injection efficiency,through earthquake simulation test by shaking table.Based on previous research,the seismic performance,yielding mechanism and seismic capacity of the structure with construction measures under intensity 7 were examined.The experimental results show that monolithic deflection of reinforced masonry structure under different earthquake waves mainly exhibits shear deformation pattern.While inputting different peak acceleration of earthquake waves,the average of maximum accelerations of lateral walls is higher than longitudinal walls and lateral deformation is greater than lengthwise direction.Longitudinal seismic capacity is higher than lateral one.The experiment results also show that the confinement effects of tie beams,constructional columns and horizontal tie bars are obvious.The tested model definitely satisfies the requirement of 'collapse prevention under unexpected rare earthquake' at intensity 7 seismic area.Adequate seismic capacity under rare earthquake can be obtained for the six-story concrete block building with tie beams and columns,allowing reasonable increases in code-specified maximum number of story and the maximum total height of concrete hollow blocks masonry structures with tie beams and columns and tie bar is permissible.
引文
[1]JGJ/T14—2004混凝土小型空心砌块建筑技术规程[S].北京:中国建筑工业出版社,2004.(JGJ/T14—2004 Technical specifical for concrete small-sizedhollow block masonry building[S].Beijing:ChinaArchitecture&Building Press,2004.(in Chinese))
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[6]GB50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.(GB50011—2001Codefor seismic design of buildings[S].Beijing:ChinaArchitecture&Building Press,2001.(in Chinese))
[7]Luciana R Barroso.Performance evaluation of vibrationcontrolled steel structures under seismic loading[D].Stanford:Stanford University,1999:78-82.
[8]Collins K R,Wen Y K,Foutch D A.Dual-levelseismic design:a reliability based methodology[J].Earthquake Engineering and Structure Dynamics,1996,25(12):1433-1436.
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[10]张敏政.地震模拟实验中相似律应用的若干问题[J].地震工程与工程振动,1997,17(2):52-58.(ZHANG Minzheng.Earthquake simulation tests in anumber of similar applications on the attorney general[J].Journal of Earthquake Engineering andEngineering Vibration,1997,17(2):52-58.(inChinese))
[11]蔡勇,施楚贤,易思甜.配筋混凝土砌块砌体剪力墙位移延性设计方法[J].湖南大学学报,2005,32(6):51-54.(CAI Yong,SHI Chuxian,YI Sitian.Displacement ductility design method of reinforcedconcrete masonry shear walls[J].Journal of HunanUniversity,2005,32(6):51-54.(in Chinese))
[12]高小旺,龚思礼.建筑抗震设计规范理解与应用[M].北京:中国建筑工业出版社,2002:368-380.(GAO Xiaowang,GONG Sili.Earthquake resistantdesign normative understanding and application[M].Beijing:China Architecture&Building Press,2002:368-380.(in Chinese))
[2]程才渊,吴明瞬.混凝土小型空心砌块配筋砌体基本力学性能与抗震性能试验研究[J].建筑砌块与砌块建筑,2003(4):26-28.(CHENG Caiyuan,WUMingshun.Small hollow blocks reinforced concretemasonry basic mechanical performance and earthquake-resistant performance testing and research[J].BuildingBlock&Block Construction,2003(4):26-28.(inChinese))
[3]周抚生,郭迅,郑志华,等.大开间小型混凝土砌块十层模型房屋抗震性能试验研究[J].地震工程与工程振动,2002,22(6):58-63.(ZHOU Fusheng,GUOXun,ZHENG Zhihua,et al.Shaking table test forseismic behavior of a 10 storied hollow concrete blockmasonry building[J].Earthquake Engineering andEngineering Vibration,2002,22(6):58-63.(inChinese))
[4]李利群,刘伟庆.约束混凝土小型空心砌块砌体抗震性能试验研究[J].南京建筑工程学院学报,2001(2):19-26.(LI Liqun,LIU Weiqing.Test research onanti-seismic performance masonry works of smallrestraint hollow concrete blocks[J].Journal of NanjingArchitectural and Cival Engineering Institute,2001(2):19-26.(in Chinese))
[5]姜洪斌,唐岱新,张洪涛.配筋混凝土小砌块剪力墙承载力试验研究[J].哈尔滨建筑大学学报,2001,34(4):30-34.(JIANG Hongbin,TANG Daixin,ZHANG Hongtao.Test on mechanics behavior ofreinforced concrete block shear wall[J].Journal ofHarbin University of Civil Engineering AndArchitecture,2001,34(4):30-34.(in Chinese))
[6]GB50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.(GB50011—2001Codefor seismic design of buildings[S].Beijing:ChinaArchitecture&Building Press,2001.(in Chinese))
[7]Luciana R Barroso.Performance evaluation of vibrationcontrolled steel structures under seismic loading[D].Stanford:Stanford University,1999:78-82.
[8]Collins K R,Wen Y K,Foutch D A.Dual-levelseismic design:a reliability based methodology[J].Earthquake Engineering and Structure Dynamics,1996,25(12):1433-1436.
[9]王墨耕,郁银泉,王汉东.配筋混凝土砌块砌体结构设计手册[M].北京:中国建材工业出版社,2000:78-92.(WANG Mogeng,YU Yinquan,WANGHandong.Reinforced concrete masonry structures designmanual[M].Beijing:China Building Materials Press,2000:78-92.(in Chinese))
[10]张敏政.地震模拟实验中相似律应用的若干问题[J].地震工程与工程振动,1997,17(2):52-58.(ZHANG Minzheng.Earthquake simulation tests in anumber of similar applications on the attorney general[J].Journal of Earthquake Engineering andEngineering Vibration,1997,17(2):52-58.(inChinese))
[11]蔡勇,施楚贤,易思甜.配筋混凝土砌块砌体剪力墙位移延性设计方法[J].湖南大学学报,2005,32(6):51-54.(CAI Yong,SHI Chuxian,YI Sitian.Displacement ductility design method of reinforcedconcrete masonry shear walls[J].Journal of HunanUniversity,2005,32(6):51-54.(in Chinese))
[12]高小旺,龚思礼.建筑抗震设计规范理解与应用[M].北京:中国建筑工业出版社,2002:368-380.(GAO Xiaowang,GONG Sili.Earthquake resistantdesign normative understanding and application[M].Beijing:China Architecture&Building Press,2002:368-380.(in Chinese))
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