Research on seismic performance of Z-supported graded yield damper
Gao Huaguo1,2 Zhang Lingxin1,2 Shi Xinxin3 Ning Baokuan3 Yang Fan4
1. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China;
2. Key Laboratory of Earthquake Engineering and Engineering Vibration, China Earthquake Administration, Harbin 150080, China;
3. Shenyang University of Technology,Shenyang 110023,China;4. Shenyang Jianzhu University,Shenyang 110168,China
Abstract：In order to realize the graded energy-consuming yield of the damper, this paper proposes a graded yielding metal damper based on Q235 steel, which is composed of internal Z-supports and steel plates with holes on both sides. By applying horizontal low-cycle forward displacement loading to three groups of Zsupported graded yield dampers with different limb heights, the test and ABAQUS simulated seismic hysteretic performance analysis were carried out to explore the energy consumption state and seismic performance of the Z-type support graded yield dampers, revealing this Energy dissipation mechanism and failure modes of dampers. The research results show that the damper can achieve graded yielding. As the limb height decreases, the Z-supported graded yield damper can more effectively improve the seismic hysteretic performance of the main structure.
