JI Wei, ZHANG Jingwei, LUO Kui. Dynamic Characteristics Analysis of Composite Box Girders With Corrugated Steel Webs Based on the Equivalent Principle[J]. Applied Mathematics and Mechanics, 2020, 41(7): 725-734. doi: 10.21656/1000-0887.400244
 Citation: JI Wei, ZHANG Jingwei, LUO Kui. Dynamic Characteristics Analysis of Composite Box Girders With Corrugated Steel Webs Based on the Equivalent Principle[J]. Applied Mathematics and Mechanics, 2020, 41(7): 725-734.

# Dynamic Characteristics Analysis of Composite Box Girders With Corrugated Steel Webs Based on the Equivalent Principle

##### doi: 10.21656/1000-0887.400244
Funds:  The National Natural Science Foundation of China（51708269;51868039）；China Postdoctoral Science Foundation（2018M643766）
• Rev Recd Date: 2019-11-28
• Publish Date: 2020-07-01
• To simplify the 3D finite element modeling process for composite box girders with corrugated steel webs, the finite element model for 3D corrugated steel webs was reduced to one for 2D orthotropic plates with the equivalent stiffness and displacement method. The simplified finite element model has a trim geometric shape, a much smaller element number and less degrees of freedom, reduced calculation time, and improved computation efficiency. Comparison between the calculated results of the natural frequencies of the 3D corrugatedsteelweb composite box girder model, the calculated natural frequencies of the equivalent 2D orthotropicplate girder model, and the measured frequency values shows good agreement, which verifies the correctness and reliability of the equivalent method. The research provides a simple finite element modeling method for composite box girders with corrugated steel webs.
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