The scope of this paper is to highlight the advantages of using longitudinally post-tensioning for long-span timber beams compared to traditional glulam or LVL solutions. The analysis is limited to serviceability limit states for gravity loads. An analtycal iterative procedure which takes into account tendon elongation within beam deflecting has been implemented and validated through experimental tests carried out at the University of Canterbury.In particular, two different static configurations have been studied and different tendon profile configurations (straight and draped) internal and external to the beam section have been investigated and compared with traditional solid timber beams. The experimental results confirm the enhanced performance in terms of deflections at serviceability limit state of the longitudinally post-tensioned solutions with respect to traditional timber beams, especially if external draped tendons are adopted.

Enhanced performance of longitudinally post-tensioned long-span LVL beams

DAL LAGO, BRUNO ALBERTO;RONCA, PAOLA
2010-01-01

Abstract

The scope of this paper is to highlight the advantages of using longitudinally post-tensioning for long-span timber beams compared to traditional glulam or LVL solutions. The analysis is limited to serviceability limit states for gravity loads. An analtycal iterative procedure which takes into account tendon elongation within beam deflecting has been implemented and validated through experimental tests carried out at the University of Canterbury.In particular, two different static configurations have been studied and different tendon profile configurations (straight and draped) internal and external to the beam section have been investigated and compared with traditional solid timber beams. The experimental results confirm the enhanced performance in terms of deflections at serviceability limit state of the longitudinally post-tensioned solutions with respect to traditional timber beams, especially if external draped tendons are adopted.
2010
11th World Conference on Timber Engineering 2010
Longitudinally post-tensioned timber; Long-span LVL beams; Unbonded post-tensioning
File in questo prodotto:
File Dimensione Formato  
WCTE2010-Palermo_et_al.pdf

accesso aperto

: Post-Print (DRAFT o Author’s Accepted Manuscript-AAM)
Dimensione 928.71 kB
Formato Adobe PDF
928.71 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/872555
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 10
  • ???jsp.display-item.citation.isi??? ND
social impact