Design of stainless steel RHS beams, columns and beam-columns

Asko Talja, Pekka Salmi

Research output: Book/ReportReportProfessional

Abstract

The main purpose of the study was to obtain test data and develop design rules of the Eurocode 3 Annex S (present Part 1.4) proposal: Design of steel structures: The use of stainless steels (1993). The study is limited to rectangular hollow sections (RHS) which are manufactured by roll-forming from AISI 304 (X4CrNi18-10) austenitic stainless steel. The main challenges are the effects of work-hardening during cold-forming and the nonlinear stress-strain behaviour, which have an effect on the plastic design, on the elastic stability design, and on the determination of deflections. First the study reviews the different design expressions given in Eurocodes, in the ANSI/ASCE code and those in some other publications. Then the test programme and test results are described. Altogether 39 tests including concentric compression, eccentric compression, bending and web crippling tests for RHS members of sizes 60x60x5, 150x100x3 and 150x100x6 have been carried out. In addition six concentric compression tests and one bending test for a cross-section of 80x80x3 referred to in the literature have been studied. The comparisons with the test results demonstrated that the Eurocode 3 Annex S proposal is very inaccurate for austenitic stainless steel RHS members. In many cases the underestimation is remarkable, and in some cases the predictions may also be uncertain. The plastic reserves are always underestimated, the expressions for the flexural buckling of slender beams lead in some cases to uncertain results and the estimation of the deflections is always uncertain. More accurate design expressions are proposed. They are based on the 0.2 %-proof stress determined by the help of a compressed stub column and on the reduced modulus of elasticity.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages89
ISBN (Print)951-38-4734-9
Publication statusPublished - 1995
MoE publication typeNot Eligible

Publication series

NameVTT Tiedotteita - Meddelanden - Research Notes
PublisherVTT
No.1619
ISSN (Print)1235-0605
ISSN (Electronic)1455-0865

Fingerprint

Stainless steel
Austenitic stainless steel
Plastics
Bending tests
Steel structures
Strain hardening
Buckling
Elastic moduli

Keywords

  • steel construction
  • steel structures
  • structural members
  • structural steels
  • design criteria
  • austenitic stainless steels
  • beams (supports)
  • columns (supports)
  • design standards
  • specifications
  • stress strain diagrams
  • plastic design
  • elastic properties
  • deformations
  • deflection
  • comparison
  • compression tests
  • Eurocode 3
  • bending

Cite this

Talja, A., & Salmi, P. (1995). Design of stainless steel RHS beams, columns and beam-columns. Espoo: VTT Technical Research Centre of Finland. VTT Tiedotteita - Meddelanden - Research Notes, No. 1619
Talja, Asko ; Salmi, Pekka. / Design of stainless steel RHS beams, columns and beam-columns. Espoo : VTT Technical Research Centre of Finland, 1995. 89 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1619).
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Talja, A & Salmi, P 1995, Design of stainless steel RHS beams, columns and beam-columns. VTT Tiedotteita - Meddelanden - Research Notes, no. 1619, VTT Technical Research Centre of Finland, Espoo.

Design of stainless steel RHS beams, columns and beam-columns. / Talja, Asko; Salmi, Pekka.

Espoo : VTT Technical Research Centre of Finland, 1995. 89 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1619).

Research output: Book/ReportReportProfessional

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AU - Salmi, Pekka

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N2 - The main purpose of the study was to obtain test data and develop design rules of the Eurocode 3 Annex S (present Part 1.4) proposal: Design of steel structures: The use of stainless steels (1993). The study is limited to rectangular hollow sections (RHS) which are manufactured by roll-forming from AISI 304 (X4CrNi18-10) austenitic stainless steel. The main challenges are the effects of work-hardening during cold-forming and the nonlinear stress-strain behaviour, which have an effect on the plastic design, on the elastic stability design, and on the determination of deflections. First the study reviews the different design expressions given in Eurocodes, in the ANSI/ASCE code and those in some other publications. Then the test programme and test results are described. Altogether 39 tests including concentric compression, eccentric compression, bending and web crippling tests for RHS members of sizes 60x60x5, 150x100x3 and 150x100x6 have been carried out. In addition six concentric compression tests and one bending test for a cross-section of 80x80x3 referred to in the literature have been studied. The comparisons with the test results demonstrated that the Eurocode 3 Annex S proposal is very inaccurate for austenitic stainless steel RHS members. In many cases the underestimation is remarkable, and in some cases the predictions may also be uncertain. The plastic reserves are always underestimated, the expressions for the flexural buckling of slender beams lead in some cases to uncertain results and the estimation of the deflections is always uncertain. More accurate design expressions are proposed. They are based on the 0.2 %-proof stress determined by the help of a compressed stub column and on the reduced modulus of elasticity.

AB - The main purpose of the study was to obtain test data and develop design rules of the Eurocode 3 Annex S (present Part 1.4) proposal: Design of steel structures: The use of stainless steels (1993). The study is limited to rectangular hollow sections (RHS) which are manufactured by roll-forming from AISI 304 (X4CrNi18-10) austenitic stainless steel. The main challenges are the effects of work-hardening during cold-forming and the nonlinear stress-strain behaviour, which have an effect on the plastic design, on the elastic stability design, and on the determination of deflections. First the study reviews the different design expressions given in Eurocodes, in the ANSI/ASCE code and those in some other publications. Then the test programme and test results are described. Altogether 39 tests including concentric compression, eccentric compression, bending and web crippling tests for RHS members of sizes 60x60x5, 150x100x3 and 150x100x6 have been carried out. In addition six concentric compression tests and one bending test for a cross-section of 80x80x3 referred to in the literature have been studied. The comparisons with the test results demonstrated that the Eurocode 3 Annex S proposal is very inaccurate for austenitic stainless steel RHS members. In many cases the underestimation is remarkable, and in some cases the predictions may also be uncertain. The plastic reserves are always underestimated, the expressions for the flexural buckling of slender beams lead in some cases to uncertain results and the estimation of the deflections is always uncertain. More accurate design expressions are proposed. They are based on the 0.2 %-proof stress determined by the help of a compressed stub column and on the reduced modulus of elasticity.

KW - steel construction

KW - steel structures

KW - structural members

KW - structural steels

KW - design criteria

KW - austenitic stainless steels

KW - beams (supports)

KW - columns (supports)

KW - design standards

KW - specifications

KW - stress strain diagrams

KW - plastic design

KW - elastic properties

KW - deformations

KW - deflection

KW - comparison

KW - compression tests

KW - Eurocode 3

KW - bending

M3 - Report

SN - 951-38-4734-9

T3 - VTT Tiedotteita - Meddelanden - Research Notes

BT - Design of stainless steel RHS beams, columns and beam-columns

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Talja A, Salmi P. Design of stainless steel RHS beams, columns and beam-columns. Espoo: VTT Technical Research Centre of Finland, 1995. 89 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1619).