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2002•Journal of Southwest Jiaotong UniversityRequires access

Nonlinear Time-Domain Analysis of Seismic Responses of Cable-Stayed Bridges

Li Li

Open publisher page 1 citations

Abstract

The incremental motion equations of a M DOF structural system excitated by seismic waves are formulated based on FEM, and a seismic response model for cable stayed bridges are proposed. Due to the geometric nonlinearity of the structure, the Newmark b method is used in the nonlinear time domain analysis. A bridge with 360 m main span is taken as an example to verify the feasibility of the method used in the study. The analysis of the bridge shows that the geometric nonlinearity of long span cable stayed bridges is not neglectable.

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What this paper is about

The incremental motion equations of a M DOF structural system excitated by seismic waves are formulated based on FEM, and a seismic response model for cable stayed bridges are proposed. Due to the geometric nonlinearity of the structure, the Newmark b method is used in the nonlinear time domain analysis. A bridge with 360 m main span is taken as an example to verify the feasibility of the method used in the study. The analysis of the bridge shows that the geometric nonlinearity of long span cable stayed bridges is not neglectable.

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Available abstract

The incremental motion equations of a M DOF structural system excitated by seismic waves are formulated based on FEM, and a seismic response model for cable stayed bridges are proposed. Due to the geometric nonlinearity of the structure, the Newmark b method is used in the nonlinear time domain analysis. A bridge with 360 m main span is taken as an example to verify the feasibility of the method used in the study. The analysis of the bridge shows that the geometric nonlinearity of long span cable stayed bridges is not neglectable.

Key concepts: Nonlinear system, Structural engineering, Bridge (graph theory), Time domain, Span (engineering), Finite element method, Engineering, Newmark-beta method

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