A STUDY ON THE BRRP SEISMIC DAMPER-SUITABLE FORM OF RIPPLED CORE PLATES AND DYNAMIC PERFORMANCE

Abstract

New Seismic dampers named Buckling-Restrained Rippled Plate (BRRP) dampers have been developed. BRRP is similar in shape to BRB (Buckling-Restrained Brace，or, Un-bonded Brace), but its core member is a 2D rippled plate instead of a 1D narrow flat plate. Firstly, to acquire the fundamental knowledge of the performance of BRRP, a parametric study regarding the curvature of rippled plate is made by a combined geometric and material nonlinear analysis. Secondly, static cyclic loading tests are performed to investigate the elasto-plastic cyclic loading behavior of BRRPs. Furthermore, dynamic cyclic loading tests are also conducted to examine the dynamic performance and the durability of BRRPs.