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Abstract

In order to study the influence of the creep effect on the spatial stressed structure, the steel-concrete combination section of a cable-stayed bridge was set as the engineering background, and the stress–strain correlation was studied. The exponential creep degree function was selected to construct the stress–strain relation of concrete under the action of creep, and the newly constructed constitutive equation was embedded into the parametric model of Ansys APDL. The influence of the creep effect on the force of the steel-concrete combination section was compared. The results show that the creep effect can significantly change the force transfer mechanism of the combination section, reduce the direct force transfer effect of the bearing plate, and change the force transfer mode of the shear block. Under the influence of creep, the normal stress value of the combination section roof increases dramatically, and stress concentration occurs in the corner area of the shear block; the area of the high-stress area expands. Meanwhile, the creep effect changes the force transfer ratio of the shear block. By considering the creep effect, the total load assigned to the concrete on the same section of the steel-concrete combination section is higher.

Publication Date

1-18-2024

DOI

10.14048/j.issn.1671-2579.2022.06.025

First Page

137

Last Page

141

Submission Date

May 2025

Reference

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