Many wooden trusses built in the 19th Century were designed to be prestressed, in order to have both diagonals active without tensile connections. However, the viscous behaviour of wood can cause temporal losses in prestress. In the present contribution, a standard-linear-solid model for wood is used to carry out viscoelastic analyses. Simple prestressing experiments, to quantify the model parameters, are proposed. Results of viscoelastic analyses of the Pine Bluff Howe Bridge in Indiana are presented.

Viscoelastic Analyses of a Prestressed Howe Bridge

DA PORTO, FRANCESCA
2004

Abstract

Many wooden trusses built in the 19th Century were designed to be prestressed, in order to have both diagonals active without tensile connections. However, the viscous behaviour of wood can cause temporal losses in prestress. In the present contribution, a standard-linear-solid model for wood is used to carry out viscoelastic analyses. Simple prestressing experiments, to quantify the model parameters, are proposed. Results of viscoelastic analyses of the Pine Bluff Howe Bridge in Indiana are presented.
2004
Structural Analysis of Historical Constructions. Possibilities of Numerical and Experimental Techniques.
0415363799
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

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/11577/179059
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact