摘要
横波钢板剪力墙由边缘框架和横波钢板组成,当边框柱刚度不足时易提前发生面外屈曲破坏,内嵌板力学性能发挥不充分,可采取增大边框柱的刚度来解决内嵌板屈服、前边框柱屈曲的问题。为明确内嵌板与边框柱的相互作用机理,优化波形钢板剪力墙设计方法,通过数值模拟建立变参模型,研究高宽比、板厚及开洞对剪力墙力学性能的影响,根据受力形态、剪力分配、耗能分配等研究内嵌板与边框柱相互作用关系。研究结果表明,内嵌板对边框柱力学性能提升效果显著,高宽比对剪力分配影响较大,板厚对耗能分配影响较大,开洞后边框柱剪力占比与耗能占比显著提高,且存在高宽比与板厚的合理组合使整体力学性能较优。提出考虑弹塑性变形分析的改进板框相互作用模型,通过理论推导并拟合得到内嵌板与边框柱各特征点对应的承载力及位移公式,理论值与模拟值误差基本在10%以内,具有工程参考价值。
Horizontal corrugated steel plate shear wall is comprised of edge frame and horizontal corrugated steel plate.When the stiffness of frame column is insufficient,the out-of-plane buckling failure is prone to occur in advance,and the mechanical properties of embedded plate are not fully exerted.To solve the buckling problem of frame column before the yielding of embedded plate,the method of increasing the stiffness of frame column is adopted.To clarify the interaction mechanism between embedded plate and frame column,optimize the design method of corrugated steel plate,the variable parameter models by numerical simulation are established to study the influence of aspect ratio,plate thickness and opening on the mechanical properties of shear wall.The interaction between embedded plate and frame column is studied according to the mechanical mode,shear distribution and energy consumption distribution.The results show that the mechanical properties of frame column are significantly improved by embedded plate,the aspect ratio of plate has a great influence on the shear distribution,and the thickness of plate has a great influence on the energy consumption distribution.The shear ratio and energy consumption ratio of frame column are significantly increased after the opening,and there is a reasonable combination of the aspect ratio and the thickness of plate to make the overall mechanical properties better.An improved plate-frame-interaction model considering elastoplastic deformation analysis is proposed.Through theoretical derivation and fitting,the formulas of bearing capacity and displacement corresponding to each characteristic point of embedded plate and frame column are obtained.The error between theoretical value and simulation value is basically less than 10%,which provides reference for engineering application.
作者
王威
王冰洁
罗麒锐
徐善文
孙壮壮
李鹏洛
WANG Wei;WANG Bing-jie;LUO Qi-rui;XU Shan-wen;SUN Zhuang-zhuang;LI Peng-luo(School of Civil Engineering,Xi'an University of Architecture&Technology,Xi'an 710055,China)
出处
《振动工程学报》
EI
CSCD
北大核心
2022年第6期1481-1492,共12页
Journal of Vibration Engineering
基金
国家自然科学基金面上项目(52278214,51878548)
陕西省自然科学基础研究计划重点项目(2022JZ-21)
中国地震局工程力学研究所项目(2021D04)。
关键词
横波钢板剪力墙
剪力分配
耗能分配
板框相互作用模型
弹塑性分析
horizontal corrugated steel plate shear wall
shear distribution
energy consumption distribution
plate-frame-interaction model
elastoplastic analysis
作者简介
王威(1972-),男,博士,教授,博士生导师。电话:13992812694,E-mail:wangwgh1972@163.com。
