Limit State Evaluation of Bridge According to Peak Ground Acceleration |
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학술지명 19 ICSHM
저자 신동훈,김기영,권민호,임정희
발표일 2017-12-18
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In the past, the criteria and procedures fore the design of concrete structures were mainly based on the stresses allowed for structural components. However, although the frequency of earthquakes has increased and the risk has increased recently, it has been difficult to determine the safety factor for earthquakes in the safety assessment of structures based on allowable stresses. Recently, limit state design method has been introduced for reinforced concrete structures, and limit state based approach has been recognized as a more effective technique for sesimic design. Therefore, in this study, the limit state of the bridge, which is a structure requiring higher stability against earthquakes, was evaluated. The finite element program LS-DYNA and twenty ground motion were used for time history analysis. The fracture caused by tensile, compression, drift of the bridge were set to the limit state. The limit state attainment for concrete tension, steel tension and drift were 100% but concrete compression is 0%. |