Damage assessment of assembled frame shear wall structures with irregular seismic damage

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (15) : 165-174.

JIANG Shaofei1, ZHU Hao1, ZHANG Zhangrong1, ZHAO Jian1, WANG Yao2

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Abstract

In order to quickly and accurately evaluate real state of irregular assembled frame shear wall structure under earthquake, and provide technical support for damage degree prediction and aseismic reinforcement of the structure after earthquake, based on structural material properties, interlayer deformation, torsional deformation and cracks and other parameters, the comprehensive damage index (DI) of the earthquake damaged irregular assembled frame shear wall structure was proposed to establish the relation between DI limit value and seismic damage level. Finally, the feasibility and effectiveness of the evaluation theory were verified with shaking table tests and numerical analysis, and the results were compared with those of the pulsation method and regulation evaluation. The results showed that using DI considers the structure’s local damage and overall damage states; seismic damage of irregular assembled frame shear wall structure is medium damage; compared with maximum interlayer torsion angle (serious damage) and crack (slight damage), the evaluation results can more truly reflect damage situation of seismically damaged structures, and they are consistent with overall evaluation results of the pulsation method and the maximum interlayer torsion angle method in code, so the proposed evaluation theory is feasible and effective for accurately evaluating seismic damage of irregular assembled frame shear wall structures.

Key words

assembled structure / irregular frame shear wall structure / shaking table test / comprehensive damage index (DI)

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JIANG Shaofei, ZHU Hao, ZHANG Zhangrong, ZHAO Jian, WANG Yao. Damage assessment of assembled frame shear wall structures with irregular seismic damage[J]. Journal of Vibration and Shock, 2021, 40(15): 165-174

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