MATEC Web Conf.
Volume 234, 2018BulTrans-2018 – 10th International Scientific Conference on Aeronautics, Automotive and Railway Engineering and Technologies
|Number of page(s)||5|
|Section||Dynamics, Strength and Reliability of Vehicles|
|Published online||21 November 2018|
Modelling of motorway bridge spans under modernization with consideration of rheological properties of the materials
1 Ukrainian State University of Railway Transport, Structural Mechanics and Hydraulics Department, Feuerbach sq. 7, 61050 Kharkiv, Ukraine
2 Ukrainian State University of Railway Transport, Building Materials and Structures Department, Feuerbach sq. 7, 61050 Kharkiv, Ukraine
3 Ukrainian State University of Railway Transport, Manage freight and commercial work Department, Feuerbach sq. 7, 61050 Kharkiv, Ukraine
* Corresponding author: Lobiak@ukr.net
The paper presents a computer modelling technique for modernization of bridgework operations by building-up a mounted reinforced concrete slab. It implements the technique of the evolutionary transformation of a model in one calculation cycle with redistribution of forces between the elements of the built-up section, and consideration of the impact of elastoplastic and rheological properties of the materials. Consideration of the concrete creep implies the application of the generalized kinetic curve of prolonged deformation and phenomenological deformation development equations based on the colloid-chemical concept of the prolonged concrete deformation mechanism. The creep control was implemented through new structural coefficients which determined the structure of matrix interlayers between the sand grains, and mortar between the crushed stone grains. The technique proposed was realized in the program complex “LIRA-SAPR” based on the building information modelling (BIM) and the finite element method (FEM). The multistage modelling technique was shown by an example of calculation of a motorway bridge slab span within the transport structures under modernization along the Lev Landau Avenue in Kharkiv (Ukraine).
© The Authors, published by EDP Sciences, 2018
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