Which forces must be exchanged between the RX‑TIMBER Glued‑Laminated Beam program and the RX‑TIMBER Brace program?

Answer

The RX‑TIMBER Brace program is generally used for the calculation of the stiffening of double-tapered beams with variable cross-section height. They can be designed in the RX‑TIMBER Glued‑Laminated Beam program.

From the RX‑TIMBER Glued-Laminated Beam program, you receive the equivalent loads by beam listed for each load case. The calculation is performed according to Section 9.2.5.3 of EC5. This equivalent load must be transferred to the RX‑TIMBER Brace program for the identical load cases (Figure 01).

The axial forces calculated in RX‑TIMBER Brace must be again defined as additional forces in RX‑TIMBER Glued-Laminated Beam. In this case, it is necessary to make a distinction between the compression force in the upper chord of the brace and the tension force in the bottom chord of the brace. Both axial forces must be applied separately. From the tension forces of the bottom chord results a deflection force in the spatial system, which can be applied as an additional moment (Figure 02).


Keywords

Deflection force Additional moments Equivalent load

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