Fuzzy Assessment Method for Seismic Damage of CFST Arch Bridges |
| |
Authors: | XIE Kaizhong MO Yonghui MENG Fangcheng and ZHOU Ruyi |
| |
Institution: | Department of civil and architecture engineering, Guangxi University, Nanning 530004, P.R.China;Hezhou urban construction investment and development group co., LTD, Hezhou 542800 Guangxi, P.R.China;Department of civil and architecture engineering, Guangxi University, Nanning 530004, P.R.China;Department of civil and architecture engineering, Guangxi University, Nanning 530004, P.R.China |
| |
Abstract: | In order to investigate the conditions of damage and failure of concrete-filled steel tube(CFST) arch bridges, considering the structural and mechanical characteristics of CFST arch bridges, the dual damage criteria assessment models of the various components based on deformation or strength and energy were developed. The nonlinear seismic response of CFST arch bridges was analyzed by finite element method and the fuzzy evaluation method of seismic damage based on fuzzy theory and analytic hierarchy process was studied. Finally, taking a long-span CFST arch bridge as example, the damage index of the bridge was 0.150, 0.152, 0.172 and 0.318 respectively when the seismic peak acceleration was respectively 0.1g, 0.2g, 0.4g and 0.8g. The results show that the CFST arch bridge is slightly damaged under the earthquake when the seismic peak acceleration is 0.4g, and the bridge is damaged moderately when the peak acceleration is 0.8g. |
| |
Keywords: | concrete-filled steel tube arch bridges damage assessment the dual damage criteria damage index fuzzy theory |
|
| 点击此处可从《保鲜与加工》浏览原始摘要信息 |
| 点击此处可从《保鲜与加工》下载免费的PDF全文 |
|