Modal Analysis of a Simple Supported Beam Steel Bridge Based on ANSYS

Dong Li Wang; Tong Li; Chun Yu Wang

doi:10.4028/www.scientific.net/AMR.594-597.2867

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 594-597Modal Analysis of a Simple Supported Beam Steel...

Modal Analysis of a Simple Supported Beam Steel Bridge Based on ANSYS

Abstract:

The purpose and significance of bridge health monitoring is described in this paper. In order to study bridge health monitoring, Firstly, a finite element model for simply supported steel beam is set up on the basis of the Infinite Element Theory and the software ANSYS in response to laboratory experient. Through adding instantaneous excitation to the mid-span, do modal analysis for different injury of steel bridge model to reveal the natural frequency and mode shapes of the different injury of steel bridges, identify the different injury by comparing the index value and the rate of change.