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带缝钢板剪力墙延性好、耗能能力强,是一种性能优良的新型抗震组件。采用数值模拟对边缘加劲带缝钢板剪力墙的滞回性能进行研究,系统分析了各种特征参数对墙板刚度、承载力及耗能能力等的影响,并在此基础上提出设计建议。分析表明:实现屈曲前屈服是带缝钢板剪力墙兼具高延性和高耗能能力的必要条件;减小缝间墙肢宽度与墙板高度之比,或增大缝间墙肢高度与墙板高度之比,将有利于墙板实现屈曲前屈服;随开缝参数不同,墙板的面外变形形态分为两类;增大肋板刚度比可显著增大发生整体失稳墙板的延性;在保证自身局部屈曲不早于墙板整体屈曲发生的前提下,为方便取材,加劲肋应首选与墙板同厚的钢板。
Shear wall with slit steel plate good ductility, energy-consuming ability, is a new type of excellent performance seismic components. The numerical simulation was used to study the hysteretic behavior of stiffened steel sheet shear walls. The influence of various characteristic parameters on wallboard stiffness, bearing capacity and energy dissipation capacity were systematically analyzed. Based on this, the design suggestions were proposed. The analysis shows that yielding before buckling is a necessary condition for the steel plate shear wall with seam to have both high ductility and high energy-dissipating capacity. The ratio of the width of the wall to the height of the wall is reduced or the height of the wall to the wall is increased The ratio of the height of the wall panels will be conducive to the buckling yield of the wall panels. With the different parameters of the slits, the out-of-plane deformation patterns of the wall panels can be divided into two categories. Increasing the stiffness ratio of the stiffeners can significantly increase the overall instability wallboard Of the ductility; to ensure that their local buckling not earlier than the overall wall buckling under the premise of the premise, for the convenience of drawing, stiffeners should be preferred with the same wall thickness of the steel plate.