Skip to main content

Torce Lines

Torce lines are identical to thrust lines in plane frames, but in generalising thrust lines for space frames it is necessary to combine the effects of torsion with the effects of axial force (hence the name).

Eccentricities of the torce, tyt_{y} and tzt_{z}, are given by

ty=−Mz−Mx⋅Fz/FxFxtz=My−Mx⋅Fy/FxFx\begin{aligned} &t_{y}=-\frac{M_{z}-M_{x} \cdot F_{z} / F_{x}}{F_{x}} \\ &t_{z}=\frac{M_{y}-M_{x} \cdot F_{y} / F_{x}}{F_{x}} \end{aligned}

For more details refer to the GSA theory (torce lines).