钢管混凝土边框不同高厚比钢板剪力墙抗震性能
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摘要
为了解钢管混凝土边框不同高厚比钢板剪力墙的抗震性能,进行了3个剪跨比为1.5的1/5缩尺的钢管混凝土边框钢板剪力墙的低周反复荷载试验.试件墙体钢板截面的高厚比分别为230、115、77.在试验基础上,对各试件的承载力、刚度、滞回特性、延性、耗能及破坏特征进行了分析,建立了该新型组合剪力墙的承载力计算模型,计算结果与实验结果符合较好.研究表明:墙体钢板高厚比较大的薄钢板剪力墙承载力较低,刚度较小,延性较好;墙体钢板高厚比较小的厚钢板剪力墙承载力较高,刚度较大,延性较差;墙体钢板高厚比适中的中厚钢板剪力墙承载力和刚度介于薄钢板墙和厚钢板墙之间,但其整体抗震耗能能力好.采用强钢管混凝土边框弱钢板的设计原则,可充分发挥该新型剪力墙2道抗震防线的作用.
In order to know the seismic behavior,three 1 /5 scale specimens with the same shear span ratio 1. 5 but different ratio of height to sectional thickness of the steel-plate shear wall,which were 230,115 and 77 respectively,were tested under cyclic loading. Based on the experiment,the carrying capacity,stiffness, hysteresis characteristics, ductility, energy dissipation and damage characteristics of the specimens were analyzed. The mechanical model for calculating load-carrying capacity of the new style shear walls was proposed. And the calculating results agreed well with those from the experiments. It shows that the thinner steel-plate shear wall with higher ratio of height to sectional thickness has lower capacity,lower stiffness and better ductility,and vice versa. The load capacity and stiffness of the wall with moderate ratio of height to sectional thickness are in between of the thinner and the thicker walls. But the overall ability of its seismic energy dissipation is the best. It is suggested that the stronger concrete filled steel tube columns and weaker steel plate should be used in steel-plate shear walls in order to provide two earthquake fortification lines.
In order to know the seismic behavior,three 1 /5 scale specimens with the same shear span ratio 1. 5 but different ratio of height to sectional thickness of the steel-plate shear wall,which were 230,115 and 77 respectively,were tested under cyclic loading. Based on the experiment,the carrying capacity,stiffness, hysteresis characteristics, ductility, energy dissipation and damage characteristics of the specimens were analyzed. The mechanical model for calculating load-carrying capacity of the new style shear walls was proposed. And the calculating results agreed well with those from the experiments. It shows that the thinner steel-plate shear wall with higher ratio of height to sectional thickness has lower capacity,lower stiffness and better ductility,and vice versa. The load capacity and stiffness of the wall with moderate ratio of height to sectional thickness are in between of the thinner and the thicker walls. But the overall ability of its seismic energy dissipation is the best. It is suggested that the stronger concrete filled steel tube columns and weaker steel plate should be used in steel-plate shear walls in order to provide two earthquake fortification lines.
引文
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[15]曹万林,杨亚彬,张建伟.圆钢管混凝土边框内藏桁架剪力墙抗震性能[J].东南大学学报:自然科学版,2009,39(6):1187-1192.CAO Wan-lin,YANG Ya-bin,ZHANG Jian-wei.Seismic behaviors of shear wall with concrete filled round steel tube columns and concealed bracing[J].Journal of Southeast University:Natural Science,2009,39(6):1187-1192.(in Chinese)
[2]王敏,曹万林,张建伟.组合剪力墙的抗震研究与发展[J].地震工程与工程振动,2007,27(5):80-87.WANG Min,CAO Wan-lin,ZHANG Jian-wei.Seismic research and development in composite shear walls[J].Journal of Earthquake Engineering and Engineering Vibration,2007,27(5):80-87.(in Chinese)
[3]廖飞宇,陶忠,韩林海.钢-混凝土组合剪力墙抗震性能研究简述[J].地震工程与工程振动,2006,26(5):130-135.LIAO Fei-yu,TAO Zhong,HAN Lin-hai.A state-of-the-art review of composite shear walls under cyclic loading[J].Journal of Earthquake Engineering and Engineering Vibration,2006,26(5):130-135.(in Chinese)
[4]CACCESE V,ELGAALY M.Experimental study of thin steel-plate shear walls under cyclic load[J].J of Structural Engrg ASCE,1993,119(2):573-587.
[5]ASTANEH-ASL Abolhassan,ZHAO Qiu-hong.Cyclic behavior of steel shear wall systems[C]∥Proceedings of Annual Stability Conference,Structural Stability Research Council.Seattle,WA:Structural Stability Research Council,2002:21-36.
[6]YAMADA Minoru.Steel panel encased R C composite shear walls[C]∥Composite Construction in Steel and ConcreteⅡ.New York:ASCE,1992:899-912.
[7]徐悦.钢筋混凝土薄钢板组合剪力墙的试验研究[J].建筑技术,2002,33(5):351-352.XU Yue.Experiment reaseach on shear wall made of reinforced concrete strengthend by thin steel plate[J].Architecture Technology,2002,33(5):351-352.(in Chinese)
[8]孙飞飞,刘桂然.组合钢板剪力墙的简化模型[J].同济大学学报:自然科学版,2010,38(1):18-23.SUN Fei-fei,LIU Gui-ran.A simplified model for composite steel plateshear walls[J].Journal of Tongji University:Natural Science,2010,38(1):18-23.(in Chinese)
[9]DRIVER R G,KULAK G L,ELWI A E,et al.FE and simplified models of steel plate shear wall[J].ASCE Journal of Structure Engineer,1997,124(2):121.
[10]李忠献,许成祥,王冬,等.钢管混凝土框架结构抗震性能的试验研究[J].建筑结构,2004,34(1):3-6.LI Zhong-xian,XU Cheng-xiang,WANG Dong,et al.Experimental research on the seismic behavior of concrete-filled steel tubular frame[J].Building Structure,2004,34(1):3-6.(in Chinese)
[11]韩林海,陶忠,刘威.钢管混凝土结构—理论与实践[J].福州大学学报:自然科学版,2001,29(6):24-34.HAN Lin-hai,TAO Zhong,LIU Wei.Concrete filled steel tubular structures from theory to practice[J].Journal of Fuzhou University:Natural Science,2001,29(6):24-34.(in Chinese)
[12]韩林海.钢管混凝土结构的特点及发展[J].工业建筑,1998,28(10):1-5.HAN Lin-hai.Characters and development of concrete filled steel tubes[J].Industrial Construction,1998,28(10):1-5.(in Chinese)
[13]蔡绍怀.我国钢管混凝土结构技术的最新发展[J].土木工程学报,1999,32(4):17-25.CAI Shao-huai.The latest developments of concrete-filled steel tube structure in China[J].China Civil Engineering Journal,1999,32(4):17-25.(in Chinese)
[14]曹万林,王敏,王绍合,等.矩形钢管混凝土边框组合剪力墙及筒体结构抗震研究[J].工程力学,2008,25(S1):58-70.CAO Wan-lin,WANG Min,WANG Shao-he,et al.Aseismic research of composite shear wall and core walls withrectangular concrete filled steel tube columns[J].Engineering Mechanics,2008,25(S1):58-70.(in Chinese)
[15]曹万林,杨亚彬,张建伟.圆钢管混凝土边框内藏桁架剪力墙抗震性能[J].东南大学学报:自然科学版,2009,39(6):1187-1192.CAO Wan-lin,YANG Ya-bin,ZHANG Jian-wei.Seismic behaviors of shear wall with concrete filled round steel tube columns and concealed bracing[J].Journal of Southeast University:Natural Science,2009,39(6):1187-1192.(in Chinese)
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