复合材料设计中SPSW和CSPSW的周期性质
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摘要
剪力墙系统常用于高层建筑结构中抵抗侧向荷载。复合钢板剪力墙(CSPSW)系统具有承载力高、延展性好、耗能能力强等特点,越来越多的用于钢结构中以抵抗侧向荷载。介绍了钢板剪力墙(SPSW)和复合钢板剪力墙(CSPSW)的相关试验。对两个1/3缩尺抛光试样进行焊接和测试,试验剪力墙系统由混凝土填充圆形中空截面(CHS)钢管柱、钢梁和SPSW或CSPSW组成。对试验结果进行分析和总结,结果显示SPSW和CSPSW系统具有良好的延展性和耗能能力。SPSW系统主要用于抵抗侧向荷载作用下薄壁钢板屈曲产生的薄膜张力引起的层间剪力。CSPSW系统中附加在钢板两侧的混凝土加固(RC)镶嵌板主要用于确保复合材料的性能,防止钢板屈曲。与SPSW系统相比,CSPSW系统的承载力和耗能能力显著增强。
Shear wall systems are one of the most commonly used lateral-load resisting systems in high-rise buildings.The composite steel plate shear wall(CSPSW) systems have strong points,such as high bearing capacity,good ductility and energy dissipation capacity,which have been increasingly used as lateral load-resisting system in steel buildings.This paper describes the experimental work related to the tests of steel plate shear wall(SPSW) system and CSPSW system.Two 1/3 scaled specimens were fabricated and tested.The tested shear wall system consisted of concrete-filled circular hollow section(CHS) steel columns,steel beams,and SPSW or CSPSW.The experimental results were summarized and discussed,which showed that both SPSW system and CSPSW system possessed good ductility and energy dissipation capacity.For SPSW system,the primary mechanism for resisting storey shear arising from lateral loads came from the post-buckling inclined tension field that forms for thin-walled steel plate.For CSPSW system,the reinforced-concrete(RC) panels attached on both sides of steel plates were able to ensure the composite action by preventing the overall buckling of steel plate.Compared with SPSW system,the bearing capacity and energy dissipation capacity of CSPSW system increased evidently.
Shear wall systems are one of the most commonly used lateral-load resisting systems in high-rise buildings.The composite steel plate shear wall(CSPSW) systems have strong points,such as high bearing capacity,good ductility and energy dissipation capacity,which have been increasingly used as lateral load-resisting system in steel buildings.This paper describes the experimental work related to the tests of steel plate shear wall(SPSW) system and CSPSW system.Two 1/3 scaled specimens were fabricated and tested.The tested shear wall system consisted of concrete-filled circular hollow section(CHS) steel columns,steel beams,and SPSW or CSPSW.The experimental results were summarized and discussed,which showed that both SPSW system and CSPSW system possessed good ductility and energy dissipation capacity.For SPSW system,the primary mechanism for resisting storey shear arising from lateral loads came from the post-buckling inclined tension field that forms for thin-walled steel plate.For CSPSW system,the reinforced-concrete(RC) panels attached on both sides of steel plates were able to ensure the composite action by preventing the overall buckling of steel plate.Compared with SPSW system,the bearing capacity and energy dissipation capacity of CSPSW system increased evidently.
引文
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