Load links

This article or section is not worded in a generally understandable manner. The shortcomings are described under Discussion: Load links. If you remove this module, please justify this on the article discussion page and add the automatically created project page section Wikipedia: Incomprehensible article #Concentration{{ Done | 1 = ~~~~}}.

In various calculation methods for bar statics , local loads ( individual forces , line loads , traction forces , bending moments , impressed deformations, transverse forces ) on individual bars are reduced to two load elements ( L, R ) in order to calculate the overall system. L is the left loading link and R is the right loading link. The loading elements occur, for example, in the Clapeyron three-moment formula . The load elements excluded from the calculation method are the final rotations determined on the single-span girder , ${\displaystyle \varphi _{L}}$ ${\displaystyle \varphi _{R}}$, multiplied by . ${\displaystyle 6\cdot E\cdot J/l}$

Bend line with end twists 1. End rotation φ that is easy to determine on a single-span girder with any load. L = ${\displaystyle \varphi _{L}\cdot 6\cdot E\cdot J/l}$ R = ${\displaystyle \varphi _{R}\cdot 6\cdot E\cdot J/l}$ With the modulus of elasticity E the moment of inertia J the rod length l

Three-span girder 2. Simple calculation method for determining the support moment at the support B for a three-panel support having the same field lengths and the same stiffness as a result L and R . ${\displaystyle MB=(R-4\cdot L)/15}$

Load terms and calculation methods are printed in many tables.

literature

• Klaus-Jürgen Schneider, Alfons Goris, Klaus Berner: Construction tables for engineers. With calculation instructions and examples. 17th edition. Werner Verlag, 2006, ISBN 3-8041-5228-7 .
• Adolf Kleinlogel : Load links. 4th edition. W. Ernst & Sohn, Berlin 1931, DNB 36106506X .