A Method for Seismic Capacity Evaluation of CFST Arch Bridges


Article Preview

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.



Advanced Materials Research (Volumes 268-270)

Edited by:

Feng Xiong




K. Z. Xie et al., "A Method for Seismic Capacity Evaluation of CFST Arch Bridges", Advanced Materials Research, Vols. 268-270, pp. 377-382, 2011

Online since:

July 2011




[1] Yi-chao Cai, Ming-jing He, Qing-quan, Chen. Evaluation method and its Extension for Seismic Capacity of Reinforced Concrete Building, Report of Specific Study Plan Achievement of Architecture Research Institute, Taiwan, 1999, pp.1-30.

[2] Mao-xiong Xu, Jun-hong Chen, Wen-de Zhang. Nonlinear Seismic Analysis of Reinforced Concrete Building, Proceedings of The 15th Conference on Mechanical Engineering, Taiwan, 1991, pp.1567-1575.

[3] Shi-sheng Yang, Xiao-qiang Hao, Qin Rong. Evaluation and study for earthquake-resistant capability of reinforced concrete frame structure, Earthquake Engineering and Engineering Vibration, China, Vol. 25 (2005), pp.80-84.

[4] Shi-sheng Yang, Xiao-qiang Hao, Qin Rong. Composition of Computation Program for Evaluation of Earthquake-Resistant Capability of Reinforced Concrete Frame Construction, Industrial Construction, China, Vol. 36 (2006), pp.14-17.

[5] Shi-sheng Yang, Qin Rong, Xiao-lian Zhao, Kai-zhong Xie. Research and application for technology of evaluating aseismic capability of building structures, World Earthquake Engineering, China, Vol. 20 (2004), pp.100-106.