| Title |
Estimation Method for Seismic Performance and Damping Requirement of Elastic Perfectly Plastic Structures using Newmark and Hall’s Response Spectrum |
| Authors |
Kim, Hyeong-Gook ; Kim, Kil-Hee |
| DOI |
http://dx.doi.org/10.5659/JAIK_SC.2016.32.2.11 |
| Keywords |
Newmark & Hall’s Response Spectrum ; Capacity Spectrum Method ; Inelastic Displacement Response ; Ductility factor ; Seismic Performance ; Performance Target ; Damping Requirement |
| Abstract |
An estimation method for seismic performance and damping requirement of elastic perfectly plastic structures is proposed in this paper. To assess the seismic performance of structures without iterative analysis and non-convergence problems of the capacity spectrum method, the capacity curve and the demand spectrum are assumed to be functions of the ductility factor. The damping requirement to achieve a prescribed performance target is evaluated using the relationship between the amplification factors in Newmark & Hall’s response spectrum and a prescribed inelastic displacement. Time history response analysis is carried out and the results are compared with those obtained using the proposed method to confirm its validity. The analytical results shown that, if the ductility value is less than 6 for elastic perfectly plastic structures, the proposed method is effective at estimating seismic performance and damping requirement of structures, using a single process during the preliminary design phase for building structures or damping devices. |