Abstract
Earthquake investigations have illustrated that even code-compliant reinforced concrete frames may suffer from soft-story mechanism. This damage mode results in poor ductility and limited energy dissipation. Continuous components offer alternatives that may avoid such failures. A novel infilled rocking wall frame system is proposed that takes advantage of continuous component and rocking characteristics. Previous studies have investigated similar systems that combine a reinforced concrete frame and a wall with rocking behavior used. However, a large-scale experimental study of a reinforced concrete frame combined with a rocking wall has not been reported. In this study, a seismic performance evaluation of the newly proposed infilled rocking wall frame structure was conducted through quasi-static cyclic testing. Critical joints were designed and verified. Numerical models were established and calibrated to estimate frame shear forces. The results evaluation demonstrate that an infilled rocking wall frame can effectively avoid soft-story mechanisms. Capacity and initial stiffness are greatly improved and self-centering behavior is achieved with the help of the infilled rocking wall. Drift distribution becomes more uniform with height. Concrete cracks and damage occurs in desired areas. The infilled rocking wall frame offers a promising approach to achieving seismic resilience.
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Acknowledgment
The authors gratefully acknowledge the financial support of the Natural Science Foundation of China under Grant No. 51178342 and 51578314.
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Supported by: Natural Science Foundation of China under Grant Nos. 51178342 and 51578314
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Pan, P., Wu, S., Wang, H. et al. Seismic performance evaluation of an infilled rocking wall frame structure through quasi-static cyclic testing. Earthq. Eng. Eng. Vib. 17, 371–383 (2018). https://doi.org/10.1007/s11803-018-0447-8
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DOI: https://doi.org/10.1007/s11803-018-0447-8