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“SLBRB” = “Short Length Buckling Restrained Brace”
This and the next image are from:
M.S. Pandikkadavath, N. Kumar and D.R. Sahoo (Civil Engineering, Indian Institute of Technology Delhi),
“Evaluation of energy parameters of short length buckling-restrained braces”, Paper No. 133, 15th Symposium on Earthquake Engineering, Indian Institute of Technology, Roorkee, December 11-13, 2014
ABSTRACT: A hybrid brace having a buckling-inhibited axially yielding segment and a non-yielding elastic component over a dominant length in sequence can provide a balanced hysteretic response under cyclic loading condition. Braced frames equipped with such a composite brace can dissipate energy in-elastically without any degradation in the lateral strength and stiffness. The enhanced stiffness of the hybrid brace can assist in reducing the drift demands on buckling-restrained braced frame (BRBF) system under the seismic action. The present study is focused on the energy dissipation characteristics of the short length buckling-restrained braces (BRBs). A reduced scale model of the short length BRB has been tested under a gradually increasing reversed-cyclic loading. In order to simulate the behavior of BRB specimens analytically, finite element modelling of the specimen is carried out using a commercial software package ABAQUS CAE. The modeling of short length BRBs and analysis results are discussed in detail in this paper. The hysteretic response obtained from analysis matched well with the test results
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