Effect of Suspension to Main Span Ratio on the Behaviour of Cable-Stayed Suspension Hybrid Bridge

G.M. Savaliya*, A. K. Desai**
* Assistant Professor, Department of Civil Engineering, Government Engineering College, Palanpur, Gujarat, India.
** Professor, Department of Applied Mechanics, Sardar Vallabhbhai Patel National Institute of Technology (SVNIT), Surat, Gujarat, India.
Periodicity:March - May'2018
DOI : https://doi.org/10.26634/jste.7.1.14279

Abstract

To accomplish utmost central span in bridges is a fascinating rational challenge. The idea of modified cable-supported bridges has been projected in the past that promise to go beyond the traditional cable-supported bridges in terms of central span length. There are different ways through which long span bridges could be achieved like structural system with innovative form, use of high strength materials, and latest method of analysis and design. The cable supported bridge systems, such as cable-stayed bridge and suspension bridge are used to achieve longer span bridges. The suspension bridge has the ability to offer longer span and cable-stayed bridge has better structural stiffness. Advantages of above system could combine in a system known as long span cable-stayed suspension hybrid bridge. To discriminate behaviour and check the feasibility of this modern form of bridge, 1400 m central span and 700 m side span cablestayed suspension hybrid bridge is selected for analysis. The span of bridge supported by suspenders also influence the behaviour of suspension bridge. Here, the influence of suspension portion is presented in the form of suspension portion to main span ratio. The analysis like modal analysis and nonlinear static analysis is carried out using SAP2000 v14.0.0. The effects of suspension portion to main span ratio on nonlinear static performance of bridge are presented in form of axial forces and bending moment in deck of cable-stayed suspension hybrid bridge.

Keywords

Cable supported bridge; hybrid cable-stayed suspension bridge; suspension portion length to main span ratio; dynamic analysis

How to Cite this Article?

Savaliya, G.M., and Desai, A.K.(2018). Effect of Suspension to Main Span Ratio on the Behaviour of Cable-Stayed Suspension Hybrid Bridge. i-manager’s Journal on Structural Engineering, 7(1), 28-34. https://doi.org/10.26634/jste.7.1.14279

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