Geometric Nonlinear Effect on Large Span Cable-Stayed Bridge

Abstract:

It is introduced that three main factors cause geometric nonlinear effects of long span cable-stayed bridge: large displacement effect, cable sag effect, and the combination of bending moment and axial force effect. The iteration method of geometrical nonlinear problem is also introduced. The bridge deformation was calculated by establishing a plane truss finite element model of a long-span single tower cable-stayed bridge under consideration of nonlinearity and compared with that done with linear method. It is concluded that nonlinearity influenced differently to the bending moment of main girder, the displacement of tower root and the vertical displacement of girder.

• Periodical: Applied Mechanics and Materials (Volumes 638-640)
• Pages: 942-946
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.638-640.942
• Online since: September 2014
• Authors: Shuang Rui Chen*, Quan Sheng Yan
• Keywords: Cable-Stayed Bridge, Finite Element, Nonlinearity, Sag Effect

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