2015 Volume 61A Pages 211-223
Following the previous investigation, this paper presents a further study on developing a high-performance prototype seismic damper, named Buckling Restrained Rippled Plate (BRRP) damper. BRRPs are to be installed at the edges of a girder-type bridge, acting as energy dissipating seismic dampers for Level 2 earthquakes. In order to develop a prototype damper, the thickness of BRRP's core plate is increased to 25mm from the previous thickness (9mm). The target performance of BRRPs is set as 1) the load carrying capacity is over 400kN, 2) the deformation capacity is over 40mm and 3) the local strains are smaller than four to five percent. Cyclic loading and pseudo-dynamic tests have shown that the tested BRRPs perform well and fulfill the above performance requirements.
