Behaviour of frames with Non-Buckling bracings under earthquake loading

被引：31

作者：

Kumar, G. Ravi ^{[1
]}

Kumar, S. R. Satish ^{[1
]}

Kalyanaraman, V. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Civil Engn, Madras 600036, Tamil Nadu, India

来源：

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH | 2007年 / 63卷 / 02期

关键词：

multi-storey frames; earthquake; Non-Buckling bracings; non-linear dynamic analysis; pushover analysis; damage index;

D O I：

10.1016/j.jcsr.2006.04.012

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The energy dissipation capacity of conventional concentric braced frames in multi-storeyed buildings degrades drastically under earthquake loading, due to buckling of bracings under the compression regime. Non-Buckling bracing is an innovative patented system, in which the buckling of the bracing is prevented and the energy is dissipated by plastic deformation under tension-compression cycles, with stable hysteresis. The strength and stiffness of Non-Buckling bracing can be tailored to obtain the desired level of storey drift limit and energy absorption. A single-bay ten-storey concentric braced frame with diagonal Non-Buckling bracing is chosen for studying their effect during earthquake loadings. Non-linear time history analysis was carried out using SAP2000 to study the variation of maximum base shear, roof displacement, inter-storey drift, Damage Index and stresses in various members due to the El Centro earthquake accelerogram. It is observed that Non-Buckling bracings are effective in dissipating energy and controlling inter-storey drift. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：254 / 262

页数：9

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