两边连接竖向加劲钢板剪力墙滞回性能研究

两边连接竖向加劲式钢板剪力墙是一种新的结构形式,其优势很独特.运用ANSYS对跨高比L/H为0.5-1.5的75组单片墙的滞回性能进行参数化分析,详细归纳总结了滞回性能几个主要指标（滞回曲线、骨架曲线、能量耗散系数、刚度衰减系数）随着跨高比、板厚、加劲肋效应的变化规律.分析结果表明：跨高比越大滞回曲线捏缩效应表现得越明显,板厚越小捏缩现象出现得越早;能量耗散系数绝大多数随着跨高比的增大呈现降低的趋势;同一跨高比构件刚度随着板厚的减小而降低,同一板厚的构件刚度随着跨高比的增大而增大;增强加劲肋对钢板墙耗能能力的提高有一定的贡献,对于提高钢板墙刚度的效果不明显.

HYSTERETIC BEHAVIOR ANALYSIS OF VERTICALLY STIFFENED STEEL PLATE SHEAR WALL (SPSW) CONNECTED WITH FRAME BEAMS

Vertically stiffened SPSW only connected with frame beams is a new type of structure. Its advantage is quite unique. Parametric simulation of hysteretic behavior which belongs to 75 groups of single＂ piece of SPSW （L/H is 0.5 - 1. 5） was carried out by the finite element software ANSYS. Several key indicators of the hysteretic behavior with the variation of the span depth ratio, plate thickness and stiffener effect were summarized in detail. The key indicators include hysteretic curve, the skeleton curve, the energy dissipation coefficient and stiffness attenuation coefficient. The results show that., with the increase of span depth ratio, hysteretic curvets pinch effect is more obvious . And the sooner it appears as span depth ratio increases. The majority of the energy dissipation coefficients decrease with the increase of the span depth ratio. The same span depth ratio, the stiffness is reduced as the thickness decreases. Besides, the same plate thickness, the stiffness is increased with the increase of the span depth ratio. It has a certain contribution to improve the energy dissipation capacity of steel plate walls by enhanced stiffener. However, the enhancement is not obvious to improve the steel plate wall＇s stiffness.