A New Type of Reduced Scale Buckling-Restrained Brace for Shaking Table Test

Abstract

For applying into the reduced scale structure model with BRB test, a new type of reduced scale buckling-restrained brace (BRB) is present. This paper discusses the problems of manufacture and installation, and the new structure of BRB is designed for resolving these problems. For a frame with BRB structure model test whose length similarity ratio is 1/6, two reduced scale BRB specimens are produced. Through low cyclic loading tests, the seismic performance of the reduced scale BRB is validated, and the comparison between the reduced scale BRB and the full scale BRB is presented. The testing results conclude that basic seismic performance of reduced scale BRB is stable and good, but there is the higher asymmetrically mechanical property. Based on the testing process and testing termination, the improved design suggestions are given. The shaking table tests that is a RC frame with the improved reduced scale BRB are finished and its results show that the reduced scale BRBs have a good performance under a few earthquake wave cases.