Analysis on seismic performance of a new type of stiffening rib angle steel damper

College of Civil and Architecture Engineering, Northeast Petroleum University, Daqing, Hei-longjiang, China

^* Corresponding author: d1359200942@163.com

Abstract

This paper proposes a stiffening angle steel damper for beam-column joints. The ABAQUS software is used to study the influence of the thickness, opening ratio and number of openings of the stiffening rib on the energy dissipation performance of the damper. A total of 7 models are set up. Through the reciprocating displacement loading method, the energy dissipation capacity is evaluated by analyzing the damper's hysteretic curves, stress distribution, skeleton curves, and key mechanical parameters under different conditions. The study shows that: Under normal circumstances, it is not advisable to use too thick stiffening ribs, but in areas prone to strong earthquakes, the thickness of the stiffening ribs can be appropriately increased or the opening ratio of the stiffening ribs can be reduced to enhance its energy consumption capacity; at the identical open-hole ratio of the stiffening ribs, as the number of openings increases, the distribution of its energy consumption is more uniform.