| 초록 |
Usually the 1 D-coherence model is used to simulate seismic excitation, that means only a variation which travels along the direction of seismic wave is considered. However, when the distance between two points, which are at vertical direction to the wave way, is some long ( e. g. at both side of a bridge } , the coherence appears. In this paper, based on 2D-coherence model, using the triangular series method, considering the effect of frequency to wave velocity and the effect of seismic wave lag to non-uniformly modulation function, the artificial seismic wave is formed to every support of a self-anchored suspension bridge. The wave is used to research the seismic responses of the bridge structure in different excitation way. The result is compared with the result of 1 D-coherence, and from comparing some valued conclusions are gained. |
