In the paper, a new numerical program developed to model the long-term behaviour of timber-concrete composite beams is introduced. It allows taking into account in a rigorous way all rheological phenomena, such as creep, mechano-sorptive effect shrinkage and inelastic strains owing to variations of environmental temperature and relative humidity. The connection deformability is also considered By means of a comparison with an experimental test the capability of the program to predict the long-term behaviour is shown. The influence of different rheological phenomena on the total solution has been estimated. Timber mechano-sorptive effect, connection and timber creep affect very much the structural behaviour. Inelastic strains due to environmental condition changes (temperature and relative humidity) produce important effects as well.
Influence of rheological phenomena in timber-concrete composite beams
CECCOTTI, ARIO;DI MARCO, ROBERTO;
2001-01-01
Abstract
In the paper, a new numerical program developed to model the long-term behaviour of timber-concrete composite beams is introduced. It allows taking into account in a rigorous way all rheological phenomena, such as creep, mechano-sorptive effect shrinkage and inelastic strains owing to variations of environmental temperature and relative humidity. The connection deformability is also considered By means of a comparison with an experimental test the capability of the program to predict the long-term behaviour is shown. The influence of different rheological phenomena on the total solution has been estimated. Timber mechano-sorptive effect, connection and timber creep affect very much the structural behaviour. Inelastic strains due to environmental condition changes (temperature and relative humidity) produce important effects as well.
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