Journal of Highway and Transportation Research and Development
 
Citation Search Quick Search DOI Advanced
Journal of Highway and Transportation Research and Development  2015, Vol. 9 Issue (4): 31-40    DOI: 10.3969/j.issn.1002-0268.2015.06.015
Current Issue | Archive | Adv Search |
Seismic Fragility Analysis of Landscape-Covered Bridge with Consideration of the Bridge-Building Interaction
SONG Shuai, QIAN Yong-jiu, FENG Bo
School of Civil Engineering, Southwest Jiaotong University, Chengdu Sichuan 610031, China
Abstract  The seismic fragility analysis of a three-span landscape covered bridge with a continuous rigid frame and a reinforced concrete frame structure is performed using traditional reliability theory. To assess the effect of the upper building structures on the bridge, nonlinear dynamic transient analysis is performed based on the spatial finite element model of the structure. The damage indexes of the pier and the bearing are defined based on the displacement failure criterion. Considering the uncertainties of ground motion and structure material, the fragility curves of piers and bearings are obtained by taking the peak ground acceleration (PGA) as an independent variable. The upper and lower limits of the bridge system fragility curves, including the building structures and excluding building structures are then obtained using the first-order bound reliability principle. The influence of the upper part of the building structure on the bridge system is analyzed, and the seismic property of the bridge is assessed. Results show that building structures significantly affect the seismic vulnerability of the bridge system, which dramatically increases its probability of undergoing extensive and complete damage.
Key wordsbridge engineering      landscape covered bridge      nonlinear dynamic transient analysis      fragility curve      first-order bounds reliability method     
Received: 09 July 2015     
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
SONG Shuai
QIAN Yong-jiu
FENG Bo
Cite this article:   
SONG Shuai,QIAN Yong-jiu,FENG Bo. Seismic Fragility Analysis of Landscape-Covered Bridge with Consideration of the Bridge-Building Interaction[J]. Journal of Highway and Transportation Research and Development, 2015, 9(4): 31-40.
URL:  
http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/10.3969/j.issn.1002-0268.2015.06.015     OR     http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/Y2015/V9/I4/31
Copyright © Journal of Highway and Transportation Research and Development
Supported by: Beijing Magtech