Industrial reinforcing system of reinforced concrete columns

Kalle Tanskanen, Pekka Nykyri, Asko Sarja

Research output: Book/ReportReport

Abstract

The aims of the research are to determine the static behaviour of prefabricated welded reinforcing units and to prepare instructions for their design which are in agreement with the column reinforcement systems previously developed at the Concrete and Silicate (Laboratory of the Technical Research Centre of Finland (VTT). The behaviour of reinforcements was examined by laboratory tests and on the basis of experimental and theoretical data obtained from the literature. The research results indicate that the welded reinforcements, in which two or four main bars are joined together with ties without encircling hoops, are as suitable as the traditional loose bars and the encircling hoops for statically loaded columns. The individual main bar zones determined in the cross-section of the columns make, in conformity with parallel research, the interlocking of beam reinforcements at the beam-to-column intersection possible as well as in the zone of change in the column cross-section. Since to fire tests on columns were carried out in conjunction with this research project, it is recommended that the fire resistance time of new reinforcements not exceed 30 minutes, if the fire resistance is not examined separately.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages44
ISBN (Print)951-38-2738-0
Publication statusPublished - 1986
MoE publication typeD4 Published development or research report or study

Publication series

SeriesValtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
Number333
ISSN0358-5077

Fingerprint

Reinforced concrete
Reinforcement
Fire resistance
Silicates
Fires
Concretes

Keywords

  • reinforced concrete
  • reinforcing steels
  • beams
  • reinforcement
  • columns
  • industrial processes
  • prefabrication
  • industrial reinforcing
  • welding

Cite this

Tanskanen, K., Nykyri, P., & Sarja, A. (1986). Industrial reinforcing system of reinforced concrete columns. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 333
Tanskanen, Kalle ; Nykyri, Pekka ; Sarja, Asko. / Industrial reinforcing system of reinforced concrete columns. Espoo : VTT Technical Research Centre of Finland, 1986. 44 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 333).
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Tanskanen, K, Nykyri, P & Sarja, A 1986, Industrial reinforcing system of reinforced concrete columns. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, no. 333, VTT Technical Research Centre of Finland, Espoo.

Industrial reinforcing system of reinforced concrete columns. / Tanskanen, Kalle; Nykyri, Pekka; Sarja, Asko.

Espoo : VTT Technical Research Centre of Finland, 1986. 44 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 333).

Research output: Book/ReportReport

TY - BOOK

T1 - Industrial reinforcing system of reinforced concrete columns

AU - Tanskanen, Kalle

AU - Nykyri, Pekka

AU - Sarja, Asko

PY - 1986

Y1 - 1986

N2 - The aims of the research are to determine the static behaviour of prefabricated welded reinforcing units and to prepare instructions for their design which are in agreement with the column reinforcement systems previously developed at the Concrete and Silicate (Laboratory of the Technical Research Centre of Finland (VTT). The behaviour of reinforcements was examined by laboratory tests and on the basis of experimental and theoretical data obtained from the literature. The research results indicate that the welded reinforcements, in which two or four main bars are joined together with ties without encircling hoops, are as suitable as the traditional loose bars and the encircling hoops for statically loaded columns. The individual main bar zones determined in the cross-section of the columns make, in conformity with parallel research, the interlocking of beam reinforcements at the beam-to-column intersection possible as well as in the zone of change in the column cross-section. Since to fire tests on columns were carried out in conjunction with this research project, it is recommended that the fire resistance time of new reinforcements not exceed 30 minutes, if the fire resistance is not examined separately.

AB - The aims of the research are to determine the static behaviour of prefabricated welded reinforcing units and to prepare instructions for their design which are in agreement with the column reinforcement systems previously developed at the Concrete and Silicate (Laboratory of the Technical Research Centre of Finland (VTT). The behaviour of reinforcements was examined by laboratory tests and on the basis of experimental and theoretical data obtained from the literature. The research results indicate that the welded reinforcements, in which two or four main bars are joined together with ties without encircling hoops, are as suitable as the traditional loose bars and the encircling hoops for statically loaded columns. The individual main bar zones determined in the cross-section of the columns make, in conformity with parallel research, the interlocking of beam reinforcements at the beam-to-column intersection possible as well as in the zone of change in the column cross-section. Since to fire tests on columns were carried out in conjunction with this research project, it is recommended that the fire resistance time of new reinforcements not exceed 30 minutes, if the fire resistance is not examined separately.

KW - reinforced concrete

KW - reinforcing steels

KW - beams

KW - reinforcement

KW - columns

KW - industrial processes

KW - prefabrication

KW - industrial reinforcing

KW - welding

M3 - Report

SN - 951-38-2738-0

T3 - Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports

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ER -

Tanskanen K, Nykyri P, Sarja A. Industrial reinforcing system of reinforced concrete columns. Espoo: VTT Technical Research Centre of Finland, 1986. 44 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 333).