Galerkin Methods for Distortion of Thin-Walled Box Girders

WANG Zhaonan; ZHANG Yuanhai

doi:10.13204/j.gyjzG21052901

Volume 52 Issue 3

Jul. 2022

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WANG Zhaonan, ZHANG Yuanhai. Galerkin Methods for Distortion of Thin-Walled Box Girders[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(3): 112-116,207. doi: 10.13204/j.gyjzG21052901

Citation:

WANG Zhaonan, ZHANG Yuanhai. Galerkin Methods for Distortion of Thin-Walled Box Girders[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(3): 112-116,207. doi: 10.13204/j.gyjzG21052901

WANG Zhaonan, ZHANG Yuanhai. Galerkin Methods for Distortion of Thin-Walled Box Girders[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(3): 112-116,207. doi: 10.13204/j.gyjzG21052901

Citation:

WANG Zhaonan, ZHANG Yuanhai. Galerkin Methods for Distortion of Thin-Walled Box Girders[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(3): 112-116,207. doi: 10.13204/j.gyjzG21052901

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Galerkin Methods for Distortion of Thin-Walled Box Girders

doi: 10.13204/j.gyjzG21052901

School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Received Date: 2021-05-29

Abstract

Abstract

To investigated the distortion effect and the influence of diaphragms in the span on the distortion of the simply supported thin-walled box girder. Based on the improved distortion analysis theory of box girder, the distortion control differential equation with the web vertical deflection as the unknown quantity was established and solved by Galerkin methods. The relationship between distortion sector coordinates and distortion warping moment inertia of rectangular cross section box girder with distortion angle and web distortion deflection as unknown quantity were analyzed. Through an example, the influence of the number of diaphragms on the distortion deformation of simply supported box girder was studied by analytical method. The results show that the influence of the number of diaphragms on the distortion deformation of box girder by Galerkin methods is more intuitive. When end diaphragms existence, three diaphragms set in the box girder, the web vertical deflection can be reduced to 98.84% of that only end diaphragms. When there are more than three diaphragms in the box girder, the effect of limiting the distortion deformation of box girder can not be significantly improved. The distortion deflection calculated by proposed method is close to the finite element results, and is in good agreement with the calculated results of the modified relevant literature formulas.
- thin-walled box girder,
- distortion,
- Galerkin method,
- diaphragm,
- distortion deflection

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References(16)

References

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