Seismic behaviour of self‐centring braced frame buildings with reusable hysteretic damping brace
Seismic behaviour of self‐centring braced frame buildings with reusable hysteretic damping brace
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DOI：
10.1002/eqe.683
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发表时间：
2007-08
影响因子：
4.5
通讯作者：
Songye Zhu;Yunfeng Zhang
中科院分区：
文献类型：
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作者：
Songye Zhu;Yunfeng Zhang
本文研究了具有自心能力的中心支撑框架体系的抗震性能，其中采用了一种称为可重复使用的滞回阻尼支撑(RHDB)的特殊支撑元件。RHDB是一种被动耗能装置，其核心耗能部件由超弹性镍钛合金丝制成。与传统的钢结构支撑相比，RHDB具有几个突出的性能特点：在地震多发区在频繁地震和设计基准地震下不会造成破坏；由于RHDB框架的自心能力，残余漂移最小；能够在几次强震中幸存下来，无需维修或更换。本文还简要讨论了RHDB的力学结构和RHDB的分析模型。通过对3层和6层RHDB框架结构在两组共20个地震动作用下的非线性时程分析，研究了RHDB框架的抗震性能。并将分析结果与屈曲约束支撑框架进行了比较。这项研究表明，RHDB帧通过消除残留漂移问题，具有优于BRB帧的潜力。版权所有©2007 John Wiley&Sons，Ltd.
This paper presents the seismic behaviour of a concentrically braced frame system with self‐centring capability, in which a special type of bracing element termed reusable hysteretic damping brace (RHDB) is used. The RHDB is a passive energy dissipation device with its core energy‐dissipating component made of superelastic Nitinol wires. Compared with conventional bracing in steel structures, RHDB has a few prominent performance characteristics: damage free under frequent and design basis earthquakes in earthquake prone areas; minimal residual drifts due to the self‐centring capability of RHDB frame; and ability to survive several strong earthquakes without the need for repair or replacement. This paper also includes a brief discussion of the RHDB's mechanical configuration and analytical model for RHDB. The seismic performance study of RHDB frame was carried out through a non‐linear time history analysis of 3‐storey and 6‐storey RHDB frame buildings subjected to two suites of 20 earthquake ground motions. The analysis results were compared with buckling‐restrained brace (BRB) frames. This study shows that RHDB frame has a potential to outperform BRB frames by eliminating the residual drift problem. Copyright © 2007 John Wiley & Sons, Ltd.