Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Seismic Response Analysis of Long-Span CFST Arch Bridge Considering Different Horizontal Excitation Directions
The incident direction of seismic ground motion has a high uncertainty. With the increases of the span and the decreases of the stiffness, the concrete-filled steel tube (CFST) arch bridge is prone to incident directional seismic damage in earthquakes. A deck CFST railway arch bridge with 500 m main-span is taken as research objective in this paper. The elastic-plastic finite element model of the full bridge was established for conducting nonlinear time history analysis based on OpenSEES software. The influence of incidence angles on the seismic response of the bridge was discussed to search the most unfavorable incidence angle. The results shown that the incident direction of seismic ground motion has different effects on the internal force and displacement response. The moment and axial force response at the arch foot corresponding to 45 degrees incidence angle is the maximum. The maximum transverse displacement of the main arch occurs at an incidence angle of 90 degrees, while the longitudinal displacement response is the maximum with the incidence angle of 30 degrees. The research results can provide reference for the seismic design and the seismic performance evaluation of CFST bridges.
Seismic Response Analysis of Long-Span CFST Arch Bridge Considering Different Horizontal Excitation Directions
The incident direction of seismic ground motion has a high uncertainty. With the increases of the span and the decreases of the stiffness, the concrete-filled steel tube (CFST) arch bridge is prone to incident directional seismic damage in earthquakes. A deck CFST railway arch bridge with 500 m main-span is taken as research objective in this paper. The elastic-plastic finite element model of the full bridge was established for conducting nonlinear time history analysis based on OpenSEES software. The influence of incidence angles on the seismic response of the bridge was discussed to search the most unfavorable incidence angle. The results shown that the incident direction of seismic ground motion has different effects on the internal force and displacement response. The moment and axial force response at the arch foot corresponding to 45 degrees incidence angle is the maximum. The maximum transverse displacement of the main arch occurs at an incidence angle of 90 degrees, while the longitudinal displacement response is the maximum with the incidence angle of 30 degrees. The research results can provide reference for the seismic design and the seismic performance evaluation of CFST bridges.
Seismic Response Analysis of Long-Span CFST Arch Bridge Considering Different Horizontal Excitation Directions
Structural Integrity
Briseghella, Bruno (Herausgeber:in) / Contento, Alessandro (Herausgeber:in) / Liu, Junping (Herausgeber:in) / Shen, Wei (Autor:in) / Peng, Shuaifei (Autor:in) / An, Yonghui (Autor:in) / Sun, Baoyin (Autor:in)
International Conference on Arch Bridges ; 2023 ; Fuzhou, China
01.04.2025
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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