关键词: 高层框-剪结构, 防屈曲耗能支撑, 耗能减震, 布置方案, 时程分析

Abstract: Buckling-restrained braces are arranged on the existing high-rise frame-shear structure based on its working principle and mechanical properties. Designed by BRB bear story shear, the dynamic time history response of the structure, the energy consumption ratio of BRB, and the stress distribution of shear wall of the three different floor layouts under two different arrangments of single oblique and inverted V were studied with the aid of SAP2000 structural nonlinear finite element software. The analysis shows that the buckling-restrained brace at the lower part of the structure performs the shock-absorbing effect on the structure. In the case of rare earthquakes, buckling-restrained brace at the lower part of the structure can not only consume great energy, but also maximum reduce the stress of the shear wall under the peak response of the structure. The layout scheme can provide a reference for the engineering practice of flexural energy dissipation bracing for high-rise frame-shear structures.

Key words: high-rise frame shear structure, buckling-restrained brace, energy dissipation, layout scheme, time-history analysis