大高宽比屈曲约束组合钢板剪力墙的试验研究
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摘要
组合钢板剪力墙具有刚度大、抗震性能好、适用范围广的优点,大高宽比组合剪力墙可用于钢结构住宅等剪力墙尺寸受限制的建筑中。本文对4组不同尺寸的大高宽比组合钢板剪力墙进行了单调加载和循环加载试验,并与一组纯钢板剪力墙进行了对比。试验结果证明,预制混凝土板可以有效地对钢板的平面外屈曲进行约束,从而大大提高组合钢板剪力墙的承载力和耗能性能;同时,试验结果与有限元分析的结果吻合良好,为组合钢板剪力墙的理论分析提供了依据。
As a promising lateral load resisting elements in new or retrofit construction of buildings, buckling-restrained composite steel plate shear wall clamped with concrete plates (BRSP) has gained a great deal of attention of researchers and engineers. However, almost all of BRSPs being studied and constructed are in small aspect ratio, of which width is equal or larger than the height. Actually, in some situations, BRSP in large aspect ratio may be serviceable if there do not have enough space to put a wide BRSP. Therefore, several experimental investigations have been conducted on narrow BRSPs with large aspect ratio, including monotonic loading tests and cyclic loading tests on four sets of BRSP with different aspect ratio from 2∶1 to 4∶1, as well as a comparative test on a normal steel plate shear wall. Form of the walls was modified to improve their energy dissipation. Experimental results are examined to reveal the wall’s failure mechanics, ductility performance, hysteretic behavior and ultimate load-carrying capacity. Analytical models have been verified by the experiments and design guidelines have been provided for the application of BRSP.
As a promising lateral load resisting elements in new or retrofit construction of buildings, buckling-restrained composite steel plate shear wall clamped with concrete plates (BRSP) has gained a great deal of attention of researchers and engineers. However, almost all of BRSPs being studied and constructed are in small aspect ratio, of which width is equal or larger than the height. Actually, in some situations, BRSP in large aspect ratio may be serviceable if there do not have enough space to put a wide BRSP. Therefore, several experimental investigations have been conducted on narrow BRSPs with large aspect ratio, including monotonic loading tests and cyclic loading tests on four sets of BRSP with different aspect ratio from 2∶1 to 4∶1, as well as a comparative test on a normal steel plate shear wall. Form of the walls was modified to improve their energy dissipation. Experimental results are examined to reveal the wall’s failure mechanics, ductility performance, hysteretic behavior and ultimate load-carrying capacity. Analytical models have been verified by the experiments and design guidelines have been provided for the application of BRSP.
引文
[1]Astaneh-Asl A.“Seismic behavior and design of compositesteel plate shear walls”[R].Steel TIPS Report,Structural Steel Educational Council,Moraga,Calif,2002.
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[3]Zhao Q,Astaneh-Asl A.“Cyclic behavior of traditional and an innovative composite shear wall”[J].Journal of Structural Engineering,2004,130(2):271-284.
[4]金属材料室温拉伸试验方法(GB/T228-2002)[S].
[5]建筑抗震试验方法规程(JGJ101-96)[S].
[6]普通混凝土力学性能试验方法标准(GB/T50081-2002)[S].
[7]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.
[2]高辉.组合钢板剪力墙试验研究与理论分析[D].同济大学申请硕士学位论文,2007.
[3]Zhao Q,Astaneh-Asl A.“Cyclic behavior of traditional and an innovative composite shear wall”[J].Journal of Structural Engineering,2004,130(2):271-284.
[4]金属材料室温拉伸试验方法(GB/T228-2002)[S].
[5]建筑抗震试验方法规程(JGJ101-96)[S].
[6]普通混凝土力学性能试验方法标准(GB/T50081-2002)[S].
[7]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.
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