Structural (Non-Linear) Analysis of Stonemasonry Railway Arch Bridge Usingfinite Element Method

C Arivarasi¹, S Baskar²

¹Assistant Professor, Department of Civil Engineering, Jaya Engineering College, Chennai, India
²Assistant Professor, Department of Civil Engineering, School of Mechanical and Construction Engineering,
Vel Tech Rangarajan Dr. Sakunthala R & D Insititute of Science & Technology, Avadi, Chennai, India
²Assistant Professor, Department of Civil Engineering, Jaya Engineering College, CTH Road, Chennai, India

Abstract

In the present study, three dimensional numerical finite element modeling and analysis of the existing masonry arch bridge system have been carried out. The central objective of the study is to investigate the structural response by changing the properties of the materials due to environmental changes in that structure system of the arch bridge to check adequacy of the proposed modification. Three different types of loading arrangements were considered.ie, train load on 5/8th of the clear span of the end arch, train load on first span and train load on first two spans of the arch. Along with the line load in each case, ballast load and self weight of the structural components are also considered during analysis. To avoid any tension the fill and the arch masonry, special contacts elements with friction co-efficient is incorporated in the finite element model. For masonry arch, William-warnke model and for soil fill, Drucker-prager plasticity models are considered to incorporate the non-linearity in the material special care has been taken to ensure the mesh compatibility between the soil fill and the masonry arch further. From the structural behavior parameters obtained from the analysis of the existing arch bridge and the existing arch bridge with proposed modification by the ageing of materials in the arch to accommodate the broad gauge loading, the proposed modification of the arch bridge has been found to be generally efficient and adequate under the conditions examined.

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Cite this Article as Follows

C Arivarasi, S Baskar. Structural (Non-Linear) Analysis of Stonemasonry Railway Arch Bridge Usingfinite Element Method. International Conference on Global Environmental Changes and Sustainable Development (2018): 49. Print.