TY - GEN
T1 - Seismic behavior of a cable-stayed bridge to near-fault vertical ground motions
AU - Jia, J. F.
AU - Ou, J. P.
PY - 2010
Y1 - 2010
N2 - Pulse characteristics of near-fault vertical seismic ground motions were introduced, and V/H acceleration spectral ratio at C site in 1999 Chi-Chi earthquake, Taiwan, was statistically analyzed. Vertical acceleration response spectra were produced based on recommended spectra of a guideline and calculated from statistical V/H spectral ratio. Vertical acceleration spectrum analyses were performed on a built large-span cable-stayed bridge. Vertical and three-dimensional time-history analyses were carried out, imposing near-fault pulse-type, non pulse-type and common ground motions, and artificial seismic motions. The analytical results show that remarkable V/H ratio exist in short and medium-to-long period range at least on C site in near-fault regions. Near-fault vertical seismic motions will impose enormous influence on vertical displacement and moment of main beam, tensile stress of long cables for the cable-stayed bridge. It is negligible influence of vertical seismic motions on horizontal seismic responses, but it is important influence of horizontal motions on vertical seismic responses with prominent increase.
AB - Pulse characteristics of near-fault vertical seismic ground motions were introduced, and V/H acceleration spectral ratio at C site in 1999 Chi-Chi earthquake, Taiwan, was statistically analyzed. Vertical acceleration response spectra were produced based on recommended spectra of a guideline and calculated from statistical V/H spectral ratio. Vertical acceleration spectrum analyses were performed on a built large-span cable-stayed bridge. Vertical and three-dimensional time-history analyses were carried out, imposing near-fault pulse-type, non pulse-type and common ground motions, and artificial seismic motions. The analytical results show that remarkable V/H ratio exist in short and medium-to-long period range at least on C site in near-fault regions. Near-fault vertical seismic motions will impose enormous influence on vertical displacement and moment of main beam, tensile stress of long cables for the cable-stayed bridge. It is negligible influence of vertical seismic motions on horizontal seismic responses, but it is important influence of horizontal motions on vertical seismic responses with prominent increase.
KW - Near-fault seismic motions
KW - Response spectrum analysis
KW - Three-dimensional seismic response
KW - Time-history analysis
KW - Vertical seismic motions
KW - Vertical seismic response
UR - https://www.scopus.com/pages/publications/85028683609
M3 - 会议稿件
AN - SCOPUS:85028683609
T3 - Proceedings of the 12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures
SP - 487
EP - 493
BT - Proceedings of the 12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures
A2 - Shao, Yong-Bo
A2 - Tam, Chat-Tim
A2 - Zhou, Xin-Gang
PB - CI-Premier Pte Ltd
T2 - 12th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures
Y2 - 23 April 2010 through 25 April 2010
ER -