Experimental research of steel-concrete load bearing components of bridge column piers

Nataliia Smirnova,Olena Synkovska,Andrii Ihnatenko,Sergiy Bugayevskiy,Maksym Kovalov,B Gigov,M Todorov,V Stoilov,N Nikolov,I Kralov,S Stoilova

doi:10.1051/matecconf/201823404003

Abstract

A new constructive design of a bridge column pier, which is a load-bearing component of bridges and overpasses as well as of complex multilevel interchanges underlying a transport infrastructure, is proposed. The design is based on a steel mesh casing that is made from a solid-web plate by means of cutting meshes and further expansion of the solid-web plate using non-waste technology. Experimental research data on the bearing capacity and deformability of the cylindrical steel-concrete load bearing components of bridge column piers are provided. They are compared with research data on load bearing components having a solid casing. To make the experimental picture complete, analogous research data on cylindrical concrete load bearing components are provided. This experiment includes static and low-cycle loadings of samples under axial compression mentioned above. On the basis of the information obtained, the effort and travel fields are formed, the critical forces of structure buckling are determined. The analysis of the rationality of the cylindrical steel-concrete load bearing component of bridge column piers is carried out, using the experimental research data. To verify the research data, which are obtained in the course of the study of the critical forces of cylindrical steel-concrete load bearing component buckling, the experimental results are compared with theoretical ones.

Highlights

An important constituent of transport infrastructure is the engineering constructions such as bridges, overpasses and complex multilevel interchanges
This paper deals with a bridge column pier
The analysis of the disadvantages of steel-concrete load bearing units having a solid steel casing and the advantages and disadvantages of load bearing units having lateral reinforcement enables us to offer the solution of the cylindrical steel-concrete load bearing unit of a pier having a mesh case (Fig. 1) [6,7]

Summary

Introduction

An important constituent of transport infrastructure is the engineering constructions such as bridges, overpasses and complex multilevel interchanges. The analysis of the disadvantages of steel-concrete load bearing units having a solid steel casing (tubeconcrete units) and the advantages and disadvantages of load bearing units having lateral reinforcement enables us to offer the solution of the cylindrical steel-concrete load bearing unit of a pier having a mesh case (Fig. 1) [6,7]. This casing is a steel plate of the St3PS grade having a mesh with distributed cells (Fig. 2). It has been proven theoretically that a rational approach to optimally compress the concrete core of a mesh casing is a direction of cells across the generatrix of a steel-concrete load bearing unit [9]; it is experimentally proven in this paper

Methodology of research

Results and discussion

13 Mesh casing with cells PV350pMTcS2No1 across generatrix PV350pMTcS2No2

Conclusions