高烈度区单向少墙超高层剪力墙结构消能减震设计

Energy Dissipation Design of a High-rise Shear Wall Structure with Few Walls in One-way in High Seismic Intensity Region

高烈度区单向少墙剪力墙结构在地震作用下少墙方向耗能能力不足,少墙向框架较早进入屈服,较难满足二道防线要求。以昆明某超高层项目为例,介绍RBS消能墙在单向少墙剪力墙结构中的应用效果。研究表明,通过设置消能墙可有效增加少墙向的耗能能力,使两个方向具有基本一致的抗震性能,消能墙在大震作用下率先屈服耗能,从而有效地保护主体结构构件,提高结构的抗震性能。消能墙在高烈度区单向少墙剪力墙结构中得到成功应用,为高烈度区类似结构消能减震设计提供了新思路。

Shear wall structures with few walls in one-way have insufficient capacity of energy dissipation under earthquake, Frame beams in the direction with few walls would soon yield under fortification and rare earthquake,which is difficult to meet the requirements of the second line of defense. Taking a super high rise project in Kunming City as an example,the application effect of RBS energy dissipation wall in shear wall structures with few walls in one-way is introduced. The analysis show that,the energy dissipation wall can effectively increase the energy dissipation capacity of the few walls direction,so that the two directions have similar seismic performance. The energy dissipation wall would yield first and consume energy under large earthquake, so as to effectively protect the main structural members and improve the seismic performance of the structure. The application of energy dissipation wall in shear wall structures with few walls in one-way,has showed a new way of structure design of similar buildings in high seismic intensity region.