| Title |
Seismic Analysis of Cable-Stayed Bridges using Nonlinear Static Procedures |
| Keywords |
seismic evaluation;modal pushover analysis;improved modal pushover analysis;cable-stayed bridge;사장교;지진해석;성능기반 내진설계법;비선형 정적해석법;모드별 비탄성 정적해석법;개선된 모드별 비탄성 정적 해석법 |
| Abstract |
??Nonlinear static procedures (NSPs) basing on the concept of performance based seismic design have become one of the promising procedures for seismic evaluation of buildings. Although it needs much less computational cost compared to nonlinear time history analysis (NTHA), its usages are limited to simple structures by its inherent restriction to structures wherein the fundamental mode dominates the response. Several new nonlinear static procedures (Modal Pushover Analysis; MPA and Improved Modal Pushover Analysis; IMPA) which can consider higher modes effect were introduced. Nonetheless, its applicability for complex structures such as cable-stayed bridge has not studied yet. This paper focuses on applicability of nonlinear static procedures for the seismic analysis of cable-stayed bridges. Moreover, reliability indexes which can predict analysis procedure's accuracy are introduced. |