| | Input parameters | Predicted values (kN) | Test value (kN) | Ratioh |
|---|
\({S}_{\mathrm{s}}\)a | \({S}_{\mathrm{P}}\)b | \({G}_{\mathrm{s}}\)c | \({G}_{\mathrm{P}}\)d | \({R}_{\mathrm{s}}\)e | \({R}_{\mathrm{p}}\)f | Determined valueg |
|---|
Ply-lami- 6.5j | 5.81k | 9.74k | 0.00522k | 0.00628k | 3.31 | 4.61 | 3.31 | 3.76 | 0.88 |
Ply-lam-8.0 | 5.29k | 9.07k | 0.00426k | 0.00769k | 11.01 | 10.46 | 10.46 | 12.00 | 0.87 |
Equivalent |
Ply-lam-6.5 | 5.55l | 9.41l | 0.00474l | 0.00699l | 3.23 | 3.72 | 3.23 | 3.76 | 0.86 |
Ply-lam-8.0 | 10.44 | 12.01 | 10.44 | 12.00 | 0.87 |
- a \({S}_{\mathrm{s}}\;=\;\) withdrawal strength of solid wood layer when a screw was pulled out (MPa)
- b \({S}_{\mathrm{p}}\;=\;\)withdrawal strength of plywood layer when a screw was pulled out (MPa)
- c\({G}_{\mathrm{s}}\) = modified withdrawal stiffness for withdrawal behavior in solid wood layer (N/mm3)
- d\({G}_{\mathrm{P}} = {0.17em}\)modified withdrawal stiffness for withdrawal behavior in plywood layer (N/mm3)
- e\({R}_{\mathrm{p}}=\mathrm{withdrawa\;resistance\;predicted\;by\;Eq. 6\;with\;the\;withdrawa\;strength\;of\;plywood}\) (N)
- f\({R}_{\mathrm{s}}=\mathrm{withdrawal\;resistance\;predicted\;by\;Eq. 6\;with\;the\;withdrawal\;sthrength\;of\;solid\;wood}\) (N)
- g\({R}_{\mathrm{s}}=\) smaller value of \({R}_{\mathrm{p}}\) and\({R}_{\mathrm{s}}\)
- hPredicted value/test value
- iHybrid cross-laminated timber, cross layers replaced by plywood
- jDiameter of screw (mm)
- kExperimental value of the corresponding screw in lamina
- lAverage of the experimental values of Ø6.5 and Ø8.0 screws in lamina
