新型十字加劲波纹钢板剪力墙滞回性能探究

Research on Hysteretic Properties of Shear Walls with New Cross Stiffened Corrugated Steel Plates

已有研究发现:作为抗侧体系,波纹钢板剪力墙在抗侧刚度、承载能力和耗能能力方面均优于平钢板剪力墙。其缺点是由于在加载后期,波纹钢板应力分布不均匀而使其平面外变形较大,导致结构承载力和刚度严重退化。利用有限元软件ABAQUS建立全壳单元模型,提出了新型十字加劲波纹钢板剪力墙结构,并进行拟静力模拟试验。通过对比未加劲波纹钢板剪力墙,十字加劲波纹钢板剪力墙在屈服荷载、峰值荷载和耗能能力方面均得到有效提高;十字加劲肋的存在有效约束了内嵌波纹钢板平面外变形,缓减了后期结构承载力和刚度的严重退化。

It has been found that the shear wall with corrugated steel plate is better than the shear wall with flat steel plate in terms of lateral stiffness,bearing capacity and energy dissipation.The disadvantage is that the stress distribution of corrugated steel plate is not uniform in the late loading period,which makes the deformation of corrugated steel plate outside the plane larger and leads to the serious degradation of the bearing capacity and stiffness of the structure.Using the finite element software ABAQUS,a new type of cross-stiffened corrugated steel plate shear wall structure is proposed,and a quasi-static test simulation is carried out.Compared with unstiffened corrugated steel plate shear wall,cross stiffened corrugated steel plate shear wall can significantly improve the yielding load capacity,peak load capacity and energy dissipation.The existence of cross stiffeners effectively restricts the deformation of the inlaid corrugated steel plate,which reduces the severe degradation of the bearing capacity and stiffness of the structure in the later period.