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TRANSVERSE SEISMIC RESPONSE OF SIMPLY SUPPORTED GIRDER BRIDGES

Dongsheng Zhu

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Abstract

This paper analyzed the transverse seismic response of simply supported girder bridges by the finite element method, and discusssed the effects of span length, lateral rigidity of the girder, and the different analysis model. The results show that the entire bridge model should be used in transverse seismic analysis for the simply supported girder bridge. The transverse rotational stiffness of bearing has a significant influence on seismic response of the bridge. In the case of a bridge with transverse fixed bearing on the abutment, real moments of shear forces in the pier adjacent to the abutment are lower than calculated results obtained by the simplified method. It is used in Chinese code, which is based on an individual pier model. But real moments or shear forces in middle piers are more than the calculated results.

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What this paper is about

This paper analyzed the transverse seismic response of simply supported girder bridges by the finite element method, and discusssed the effects of span length, lateral rigidity of the girder, and the different analysis model. The results show that the entire bridge model should be used in transverse seismic analysis for the simply supported girder bridge. The transverse rotational stiffness of bearing has a significant influence on seismic response of the bridge. In the case of a bridge with transverse fixed bearing on the abutment, real moments of shear forces in the pier adjacent to the abutment are lower than calculated results obtained by the simplified method. It is used in Chinese code, which is based on an individual pier model. But real moments or shear forces in middle piers are more than the calculated results.

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Available abstract

This paper analyzed the transverse seismic response of simply supported girder bridges by the finite element method, and discusssed the effects of span length, lateral rigidity of the girder, and the different analysis model. The results show that the entire bridge model should be used in transverse seismic analysis for the simply supported girder bridge. The transverse rotational stiffness of bearing has a significant influence on seismic response of the bridge. In the case of a bridge with transverse fixed bearing on the abutment, real moments of shear forces in the pier adjacent to the abutment are lower than calculated results obtained by the simplified method. It is used in Chinese code, which is based on an individual pier model. But real moments or shear forces in middle piers are more than the calculated results.

Key concepts: Pier, Structural engineering, Transverse plane, Girder, Abutment, Engineering, Finite element method, Rigidity (electromagnetism)

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TRANSVERSE SEISMIC RESPONSE OF SIMPLY SUPPORTED GIRDER BRIDGES — Research Paper | ScholarLens