Seismic Response of Baihua Viaduct During the Wenchuan Earthquake and Methods of Reducing Seismic Damage

Abstract

Baihua Viaduct which is an important transportation project of 213 National Highway was severely destroyed during the 512 Wenchuan earthquake. The fifth segment of the bridge suffered the most severe unrepairable damage, such as the rupture of the piers and falling of beams. It is worth to study the performance through the FEM dynamical analysis to explain the damage performance of Baihua Viaduct in the earthquake. The dynamical FE model of the Baihua Viaduct is established considering the non-liner properties of piers and bearings. Further the earthquake records of the nearest Wolong station is chosen to be as the earthquake excitation input to conduct the seismic analysis. The analysis shows that the results of damage position and damage degree of components of the bridge calculated by elastic-plastic dynamic analysis are close to the actual damage of Baihua Viaduct. The reinforcement ratio of piers is low, while there is not any shear failure on piers. The damage degree of elastic hinge is related with the arrangement of bearings. The girders' displacement is much larger because there are not any anti-dropping devices on the bridge. Damage of the fifth segment of bridge may be caused by plasticity destroy of some piers. © (2012) Trans Tech Publications, Switzerland.

Meeting Name

2nd International Conference on Structures and Building Materials, ICSBM 2012

Department(s)

Mechanical and Aerospace Engineering

Sponsor(s)

Beijing Univ. Technol., Coll. Archit. Civ. Eng.
Zhejiang Univ. Technol., Sch. Civ. Eng. Archit.

Keywords and Phrases

Dynamical Elastic-Plastic; Seismic Damage; Seismic Response Analysis; Viaduct; Wenchuan Earthquake

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Trans Tech Publishing, All rights reserved.

Publication Date

01 Jan 2012

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