Long-term behaviour of composite slabs prestressed with unbonded tendons

Mikko Malaska, Matti Pajari

Research output: Book/ReportReport

Abstract

Mechanical modelling of post-tensioned steel-concrete composite slabs with unbonded tendons is discussed. The model was added as an option to COMPCAL, a finite element program developed at Ecole polytechnique fédérale de Lausanne, Switzerland. The work focused on the long-term behaviour of composite slabs in the serviceability limit state. Therefore, special attention was paid to the effects of creep and shrinkage of the concrete, and to those of relaxation of the prestressing steel. As an example, an analysis for a two-span slab was carried out.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages40
ISBN (Print)951-38-4973-2
Publication statusPublished - 1996
MoE publication typeNot Eligible

Publication series

SeriesVTT Tiedotteita - Meddelanden - Research Notes
Number1778
ISSN1235-0605

Fingerprint

Tendons
Concretes
Prestressing
Steel
Composite materials
Creep

Keywords

  • concrete construction
  • concrete slabs
  • slabs
  • steels
  • prestressing steels
  • steel construction
  • composite structures
  • finite element analysis
  • creep properties
  • shrinkage
  • relaxation (mechanics)
  • tendons
  • unbonded tendons
  • strains
  • stresses

Cite this

Malaska, M., & Pajari, M. (1996). Long-term behaviour of composite slabs prestressed with unbonded tendons. Espoo: VTT Technical Research Centre of Finland. VTT Tiedotteita - Meddelanden - Research Notes, No. 1778
Malaska, Mikko ; Pajari, Matti. / Long-term behaviour of composite slabs prestressed with unbonded tendons. Espoo : VTT Technical Research Centre of Finland, 1996. 40 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1778).
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Malaska, M & Pajari, M 1996, Long-term behaviour of composite slabs prestressed with unbonded tendons. VTT Tiedotteita - Meddelanden - Research Notes, no. 1778, VTT Technical Research Centre of Finland, Espoo.

Long-term behaviour of composite slabs prestressed with unbonded tendons. / Malaska, Mikko; Pajari, Matti.

Espoo : VTT Technical Research Centre of Finland, 1996. 40 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1778).

Research output: Book/ReportReport

TY - BOOK

T1 - Long-term behaviour of composite slabs prestressed with unbonded tendons

AU - Malaska, Mikko

AU - Pajari, Matti

PY - 1996

Y1 - 1996

N2 - Mechanical modelling of post-tensioned steel-concrete composite slabs with unbonded tendons is discussed. The model was added as an option to COMPCAL, a finite element program developed at Ecole polytechnique fédérale de Lausanne, Switzerland. The work focused on the long-term behaviour of composite slabs in the serviceability limit state. Therefore, special attention was paid to the effects of creep and shrinkage of the concrete, and to those of relaxation of the prestressing steel. As an example, an analysis for a two-span slab was carried out.

AB - Mechanical modelling of post-tensioned steel-concrete composite slabs with unbonded tendons is discussed. The model was added as an option to COMPCAL, a finite element program developed at Ecole polytechnique fédérale de Lausanne, Switzerland. The work focused on the long-term behaviour of composite slabs in the serviceability limit state. Therefore, special attention was paid to the effects of creep and shrinkage of the concrete, and to those of relaxation of the prestressing steel. As an example, an analysis for a two-span slab was carried out.

KW - concrete construction

KW - concrete slabs

KW - slabs

KW - steels

KW - prestressing steels

KW - steel construction

KW - composite structures

KW - finite element analysis

KW - creep properties

KW - shrinkage

KW - relaxation (mechanics)

KW - tendons

KW - unbonded tendons

KW - strains

KW - stresses

M3 - Report

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BT - Long-term behaviour of composite slabs prestressed with unbonded tendons

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Malaska M, Pajari M. Long-term behaviour of composite slabs prestressed with unbonded tendons. Espoo: VTT Technical Research Centre of Finland, 1996. 40 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1778).