Damage Quantification of Frame-Shear Wall Structure with Metal Rubber Dampers under Seismic Load

Abstract

The seismic load can bring serious damages to the coupling beams and frame beams in the frame-shear wall structure. Such damages can hardly be repaired, causing functional loss to the structure. One of the best ways to consume seismic energy input, rationalize the damage mode of structure, and prevent serious damages to the main components is to install metal rubber (MR) dampers materials in the frame-shear wall structure. Based on Park and Ang’s damage model, this paper presents pertinent formulas of damage indexes, and uses them to quantify the failure mode. Then, the correspondence was established between damage level of the target structure, reasonable damage mode, and damage index. Finally, two ABAQUS models of an 18-floor frame-shear wall structure were constructed: an uncontrolled structure (traditional frame-shear wall structure) and a controlled structure (frame-shear wall structure with MR dampers). Through comparative analysis, the characteristic parameters of the damper were determined for the reasonable damage mode, and the failure mechanism of the target structure was identified accurately under seismic load.

Experimental Study on Mechanical Properties of Shear Square Section Steel Tube Dampers

“…The replaceable property of the metal dampers can promote the rapid postearthquake recovery of building functions [1][2][3][4]. Traditional shear metal dampers are mainly used in high-rise or super-high-rise buildings and are not suitable for low multistory buildings because of their complex structure and high cost [5][6][7].…”