Effects of Live Load on the Deflection of Long-Span PC Continuous Rigid-Frame Highway Bridge Based on Midas

Author

Yue Jianjun ; Wu Xun ; Huang Xianzheng

Author_Institution

Tongji Univ., Shanghai, China

fYear

2014

fDate

25-26 Oct. 2014

Firstpage

944

Lastpage

946

Abstract

Down-deflection is one of the most common diseases of long-span prestressed concrete (PC) bridge. According to relevant design codes and deflection calculation methods, effects of live load were not explicitly considered. Thus, it is necessary to analyze the live load effects on bridge down-deflection in detail. In this paper, the whole construction process of a long-span PC continuous ridge-frame bridge was firstly simulated by Midas/Civil software. Then, by multiplying a certain coefficient on uniformly distributed lane load, long-term deflection effects of live load were studied. Finally, by using two theories about the fatigue effect on deflection, the impact of repeated live load on long-term deflection was comparatively analyzed. The results show live load has an important effect on the down-deflection of PC continuous rigid-frame bridge.

Keywords

bridges (structures); design engineering; fatigue; reinforced concrete; shear modulus; Midas-Civil software; bridge down-deflection; construction process; deflection calculation methods; design codes; fatigue effect; live load effect; long-span PC continuous ridge-frame bridge; long-span prestressed concrete bridge; long-term deflection effects; uniformly distributed lane load; Bridges; Concrete; Fatigue; Load modeling; Road transportation; Structural beams; Vehicles; Downdeflection; Fatigue; Live Load; PC Rigid-frame Bridge;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Computation Technology and Automation (ICICTA), 2014 7th International Conference on

Conference_Location

Changsha

Print_ISBN

978-1-4799-6635-6

Type

conf

DOI

10.1109/ICICTA.2014.227

Filename

7003690