为合理调节或优化传统钢板剪力墙(steel plate shear wall,SPSW)的抗震性能,本文提出了一种新型的带圆形压痕的钢板剪力墙结构(steel plate shear wall with circle dents,SPSW-CD).基于有限元方法系统研究了压痕孔径、压痕孔距、压痕深度、钢板厚度和钢材强度等参数对SPSW-CD抗侧性能的影响,提出了四边连接SPSW-CD抗侧刚度及水平承载力的简化计算公式.分析结果表明随着压痕孔径增加,SPSW-CD的初始抗侧刚度及水平承载力均呈降低趋势;压痕孔距及钢板厚度越大,SPSW-CD抗侧性能越优.随着钢材强度增加,SPSW-CD水平承载力呈明显的增大趋势,但对其抗侧刚度影响不明显.压痕深度对SPSW-CD抗侧性能的影响可忽略.SPSW-CD抗侧刚度及水平承载力计算公式计算误差均小于 10%,研究成果可用于此类结构的工程设计.
Lateral resistant performance of four-side connected steel plate shear walls with circle dents
To reasonably adjust or optimize the seismic behavior of traditional steel plate shear wall(SPSW),an innovative steel plate shear wall with circle dents(SPSW-CD)was proposed.The effects of dent aperture,dent distance,dent depth,steel plate thickness,and steel strength on its lateral resistant performance were systematically analyzed,and the simple calculated formulas for evaluating its lateral stiffness and strength for SPSW-CD were developed.The analytical results show that with the increase of dent aperture,the lateral stiffness and lateral strength of SPSW-CD exhibit the decreasing tendency.The larger dent distance and steel plate thickness,the better the lateral resistant performance of SPSW-CD.As the steel strength increases,the lateral strength of SPSW-CD shows a significant increasing trend,but the effect on its lateral stiffness is not significant.The effect of dent depth on its lateral resistant performance can be ignored.The simple calculated formulas obtained the considerable great calculating precision for evaluating the lateral stiffness and strength,and the largest error was less than 10%.The analytical results could provide the valuable reference for engineering design of SPSW-CD.
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