Sb. Taylor et al., MODELING STRUCTURAL INSULATED PANEL (SIP) FLEXURAL CREEP DEFLECTION, Journal of structural engineering, 123(12), 1997, pp. 1658-1665
Citations number
19
Categorie Soggetti
Engineering, Civil","Construcion & Building Technology
Creep testing of oriented strand board/foam structural insulated panel
s (SIPs) was conducted to measure the midspan creep deflections of SEP
beams loaded in quarter point and to test the effects of SIP thicknes
s, load duration, as well as core shear stress. A relative deflection
relationship was generated for both the expanded polystyrene (EPS) and
urethane SIPs from the faw creep deflection data that had been screen
ed based on previously determined limits of viscoelastic linearity. A
five element, four element, and three element viscoelastic model along
with a power model were all used in the validation procedure to predi
ct the three month relative creep deflection. EPS SIPs were tested at
the 2/3 stress level for six months to determine the model capability
in predicting relative deflections beyond the experimental time span.
Both the five element and the power model were recommended for predict
ing the EPS and urethane SIP relative deflections for the three month
load duration.