Study on Elastic Global Shear Buckling of Curved Girders with Corrugated Steel Webs: Theoretical Analysis and FE Modelling

Kangjian Wang; Man Zhou; Mostafa Fahmi Hassanein; Jitao Zhong; Hanshan Ding; Lin An

doi:10.3390/app8122457

Applied Sciences (Dec 2018)

Study on Elastic Global Shear Buckling of Curved Girders with Corrugated Steel Webs: Theoretical Analysis and FE Modelling

Kangjian Wang,
Man Zhou,
Mostafa Fahmi Hassanein,
Jitao Zhong,
Hanshan Ding,
Lin An

Affiliations

Kangjian Wang: School of Civil Engineering, Southeast University, Nanjing 210096, China
Man Zhou: School of Civil Engineering, Southeast University, Nanjing 210096, China
Mostafa Fahmi Hassanein: Department of Structural Engineering, Faculty of Engineering, Tanta University, Tanta 999060, Egypt
Jitao Zhong: College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 271019, China
Hanshan Ding: School of Civil Engineering, Southeast University, Nanjing 210096, China
Lin An: Department of Civil Earth Resources Engineering, Kyoto University, Kyoto 615-8540, Japan

DOI: https://doi.org/10.3390/app8122457
Journal volume & issue: Vol. 8, no. 12
p. 2457

Abstract

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Despite the construction of several curved prestressed concrete girder bridges with corrugated steel webs (CSWs) around the world; their shear behavior has seldom been investigated. Accordingly, this paper substitutes the lack of available information on the global elastic shear buckling of a plane curved corrugated steel web (PCCSW) in a curved girder. This is based on the equilibrium equations and geometric equations in the elastic theory of classical shells, combined with the constitutive relation of orthotropic shells. Currently, the global elastic shear buckling process of the PCCSW in a curved girder is studied, for the first time in literature, with an equivalent orthotropic open circular cylindrical shell (OOCCS) model. The governing differential equation of global elastic shear buckling of the PCCSW, as well as its buckling strength, is derived by considering the orthotropic characteristics of a corrugated steel web, the rational trigonometric displacement modes, Galerkin’s method and variational principles. Additionally, the accuracy of the proposed theoretical formula is verified by comparison with finite element (FE) results. Moreover, the expressions of the inner or outer folded angle and radius of curvature are given by the cosine theorem of the trigonometric function and inverse trigonometric function. Subsequently, parametric analysis of the shear buckling behavior of the PCCSW is carried out by considering the cases where the radius of curvature is constant or variable. This parametric analysis highlights the effects of web dimensions, height-to-thickness ratio, aspect ratios of longitudinal and inclined panels, corrugation height, curvature radius and folded angles on the elastic shear buckling strength. As a result, this study provides a theoretical reference for the design and application of composite curved girders with CSWs.

Published in Applied Sciences

ISSN: 2076-3417 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Engineering (General). Civil engineering (General); Science: Biology (General); Science: Physics; Science: Chemistry
Website: http://www.mdpi.com/journal/applsci

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