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Structural Engineering and Mechanics Volume 74, Number 2, April25 2020, pages 201-214 DOI: http://dx.doi.org/10.12989/sem.2020.74.2.201 |
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Performance evaluation of composite moment-frame structures with seismic damage mitigation systems using wavelet analyses |
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Mosbeh R.Kaloop, Hong Min Son, Hyoung-Bo Sim, Dongwook Kim and Jong Wan Hu
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| Abstract | ||
| This study aims at evaluating composite moment frame structures (CFS) using wavelet analysis of the displacement behavior of these structures. Five seismic damage mitigation systems' models of 9-story CFS are examined namely, basic (Model 1), reinforced (Model 2), buckling restrained braced (BRB) (Model 3), lead rubber bearing (LRB) (Model 4), and composite (Model 5) moment frames. A novel integration between continuous and discrete wavelet transforms is designed to estimate the wavelet power energy and variance of measurements' behaviors. The behaviors of the designed models are evaluated under influence of four seismic loads to study the dynamic performance of CFS in the frequency domain. The results show the behaviors of models 3 and 5 are lower than other models in terms of displacement and frequency performances. Model 3 has been shown lower performances in terms of energy and variance wavelets along the monitoring time; therefore, Model 3 demonstrates superior performance and low probability of failure under seismic loads. Furthermore, the wavelet variance analysis is shown a powerful tool that can be used to assess the CFS under seismic hazards. | ||
| Key Words | ||
| composite frame; wavelet; dynamic analysis; seismic | ||
| Address | ||
| Mosbeh R.Kaloop, Hong Min Son, Hyoung-Bo Sim, Dongwook Kim and Jong Wan Hu: Department of Civil and Environmental Engineering, Incheon National University, Incheon 22012, Korea Hong Min Son, Jong Wan Hu:Incheon Disaster Prevention Research Center, Incheon National University, Incheon 22012, Korea Mosbeh R.Kaloop: Public Works and Civil Engineering Department, Mansoura University, Mansoura 35516, Egypt | ||