Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A Method for Seismic Capacity Evaluation of CFST Arch Bridges
Based on strength and ductility, the seismic capabilities of the chords of arch ribs, web members, horizontal integrations, suspenders and beams of suspenders of concrete filled steel tube (CFST) arch bridges are studied, then the seismic capability of the bridge is obtained. Firstly, the internal forces of the members are calculated respectively by finite element under the actions of gravity representative value and small earthquakes (0.05g). Then the ultimate bearing capacities, the ratio of ductility and the reduction coefficients of earthquake are obtained according to the failure modes. Finally, yield accelerations of ground movement are multiplied by the reduction coefficients of earthquake, which the resistance seismic capabilities of the members Ac are obtained. The seismic capability of bridge is the minimum Ac. Taking Nanning Yonghe Bridge that is a 346m CFST arch bridge as example, the seismic capability is evaluated that the bridge can resisted the earthquake which the acceleration of ground movement is respectively 0.677g. The results show that the method of seismic capability evaluation is a feasible and efficient method for seismic capability evaluation of CFST arch bridge.
A Method for Seismic Capacity Evaluation of CFST Arch Bridges
Based on strength and ductility, the seismic capabilities of the chords of arch ribs, web members, horizontal integrations, suspenders and beams of suspenders of concrete filled steel tube (CFST) arch bridges are studied, then the seismic capability of the bridge is obtained. Firstly, the internal forces of the members are calculated respectively by finite element under the actions of gravity representative value and small earthquakes (0.05g). Then the ultimate bearing capacities, the ratio of ductility and the reduction coefficients of earthquake are obtained according to the failure modes. Finally, yield accelerations of ground movement are multiplied by the reduction coefficients of earthquake, which the resistance seismic capabilities of the members Ac are obtained. The seismic capability of bridge is the minimum Ac. Taking Nanning Yonghe Bridge that is a 346m CFST arch bridge as example, the seismic capability is evaluated that the bridge can resisted the earthquake which the acceleration of ground movement is respectively 0.677g. The results show that the method of seismic capability evaluation is a feasible and efficient method for seismic capability evaluation of CFST arch bridge.
A Method for Seismic Capacity Evaluation of CFST Arch Bridges
Xie, Kai-Zhong (Autor:in) / Qin, Le-Qin (Autor:in) / Lv, Wen-Gao (Autor:in)
2011
6 Seiten
Aufsatz (Konferenz)
Englisch
A Method for Seismic Capacity Evaluation of CFST Arch Bridges
| Trans Tech Publications | 2011
Fuzzy Assessment Method for Seismic Damage of CFST Arch Bridges
| British Library Online Contents | 2012
Effects of tie-bars on seismic behavior of CFST arch bridges
| British Library Online Contents | 2007
Australia’s Arch Bridges and Its First CFST Arch Bridge
| Springer Verlag | 2025
Rapid development of CFST arch bridges in China
| British Library Conference Proceedings | 2003