Research on Calculation Method of Suspension Bridge Internal Force under Random Traffic Load

Suspension bridge is a flexible structure. The weight, location and number of traffic on the bridge will affect the geometric alignment of the bridge. Although the finite element software can analyze the geometric nonlinearity of the bridge, the calculation of random load combination in finite eleme...

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Bibliographic Details
Published in:KSCE journal of civil engineering 2023, 27(11), , pp.4823-4833
Main Authors: Wu, Pengfei, Fang, Zhichun, Wang, Xue, Wang, Renyuan, Xu, Qiang
Format: Article
Language:English
Subjects:
Bridge loads
Civil Engineering
Constitutive models
Deformation
Engineering
Finite element method
Flexible structures
Geometric nonlinearity
Geotechnical Engineering & Applied Earth Sciences
Industrial Pollution Prevention
Internal forces
Nonlinear systems
Nonlinearity
Railway bridges
Random loads
Random numbers
Random processes
Software
Static equilibrium
Stress state
Structural Engineering
Suspension bridges
Weight
토목공학
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Summary:Suspension bridge is a flexible structure. The weight, location and number of traffic on the bridge will affect the geometric alignment of the bridge. Although the finite element software can analyze the geometric nonlinearity of the bridge, the calculation of random load combination in finite element software is huge. In this paper, based on the deformation coordination, static equilibrium and constitutive model of the bridge, the force expression considering the geometric nonlinearity of the bridge is derived. Finite element software is used to simulate the internal force of components of suspension bridge under train load and vehicle load. The accuracy is verified by comparing the finite element results. Considering the random number of traffics, the random location of traffics, and the random weight of traffics, this paper analyzes the stress state of bridge under the random process of train load and vehicle load respectively. The method in this paper can be well used to analyze the actual stress state of the bridge, and provide a theoretical basis for related calculations.
ISSN:1226-7988
1976-3808
DOI:10.1007/s12205-023-2113-6