| Popis: |
Taking Jiashao Bridge as the research subject, this paper established finite element model by ANSYS to study random seismic response of multi-tower cable-stayed bridge. The results show that the constraint relations between tower and girder influence internal force at bottom of towers deeply, and the force of each tower is different. The vertical displacements in the midspan of girder are varied in different constraint relation. In addition, the effect of traveling waves on this bridge under excitation was analyzed, the results show that traveling wave velocity has an important implication on the seismic response of multi-tower bridge, and there are some regular relations between the response of structure and high traveling wave velocities. |
