PSI - Issue 37

423 7

Gonzalo Moltini et al. / Procedia Structural Integrity 37 (2022) 417–424 Molti i & Baño/ Structural Integr ty P o edi 00 (2019) 000 – 000

Figure 7: 3D diagrams of the variation of the TTP’s deflection depending on the connectors’ geometrical parameters. a) 30º, b) 45º, c) 60º, d) 75º

As we can observe in Fig. 7, and as it was expected, the deflection decreases for the higher values of h c and b 1 for all the dove-tail angles studied, due to the increasing of the TTPs inertia and the connector shear stiffness. 4. Conclusions 1. Different configurations of Timber-to-Timber-Panels (TTPs) were designed varying the height, width, and dove-tail angle of the connectors with the aim to analyse numerically their influence on the shear stresses and the deflection. 2. The deflection of the TTPs decreases with the increase of the height and the width of the connectors. 3. For a same connector height, the angle of the dove-tail shows low influence in the maximum shear stress; however, it plays a greater role in the deflection of the panels. 4. The shear stress of the connectors decreases with the increasing of the height and the width. 5. The new TTP configurations varying the connector parameters showed an improvement on the deflection and on the shear stresses of the connectors. 6. As general conclusion, it is recommended to design the TTP’s with high width and height of connectors depending on the span on the floor. 7. With the aim to compare the results with other commercial mass timber panels, such as CLT, wider works are under developing in order to decrease the shear stresses and, therefore, the deflection. For that, new connector shapes were designed avoiding sharp edges or making connectors work in compression instead of pure rolling shear.

References

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