Investigations and Non-destructive Testing in New Building Design

V Klimenov,A Danilson,A Ustinov,A Shtein,A Ovchinnikov,S Osipov

doi:10.1088/1742-6596/671/1/012027

Abstract

Mechanical rebar couplers are preferable in the advanced building construction and structural design of antiseismic elements. The paper presents destructive inspection techniques used to investigate stress fields (tensile and compressive) and deformation curves for mechanical rebar splicing. The properties of mechanical rebar splicing are investigated by the non-destructive testing digital radiography. The behavior of real connections (column-to- column, beam-to-column) is studied under static and dynamic loads. Investigation results allow the elaboration of recommendations on their application in the universal prefabricated antiseismic structural system developed at Tomsk State University of Architecture and Building, Tomsk, Russia.

Highlights

In building design and construction, the longitudinal connection of reinforcing bars is often needed since their length is restricted by the transportation conditions and should not exceed 12 m
Welded splice has a number of disadvantages connected with electricity costs, attraction of qualified specialists, and labour intensity. Another type of rebar connection is lap splice that has disadvantages lying in rebar overrun due to overlaps and installation of additional shear reinforcement in rebar connections [1,2,3,4]
In Russia, mechanical rebar splicing is used in in-situ concrete and prefabricated reinforced concrete

Summary

Introduction

In building design and construction, the longitudinal connection of reinforcing bars is often needed since their length is restricted by the transportation conditions and should not exceed 12 m. Welded splice has a number of disadvantages connected with electricity costs, attraction of qualified specialists, and labour intensity. Another type of rebar connection is lap splice that has disadvantages lying in rebar overrun due to overlaps and installation of additional shear reinforcement in rebar connections [1,2,3,4]. A series of experiments was carried out to solve this problem including the detection of the stress and strain state of rebar joints under compression and tension, measured connections between the reinforced concrete members of the universal prefabricated antiseismic structural system under static and dynamic loads.

Published under licence by IOP Publishing Ltd

Findings

Conclusions