Lattice girder supporting frame having oblique cut truss braces

A lattice girder supporting frame comprising:

• boom members disposed in parallel with respect to each other and forming a triangle;
• and
• straight truss braces connected to said boom members, wherein each of said straight truss braces has at least one oblique end connected to said boom members.

A lattice girder supporting frame for mine tunnel lining having at least three boom members arranged in parallel relative to each other and forming a triangle, spatially connected to each other by means of bracing elements wherein each of the bracing elements consists of four straight braces arranged along edges of a pyramid, which are welded to each other at contact faces between a straight brace part and an upper boom and a straight brace part and a lower boom, so as to form a truss brace, wherein the plane of symmetry of each truss brace is located in the plane extending from the axes of each of the upper booms and the lower booms, while the lower booms are connected to each other via cross-ties arranged at right angles relative to the lower booms and wherein said cross-ties form two sides of a pyramid base surface, and wherein four comer points of the truss brace define pyramid base comers at the contact points between said lower booms and said straight brace parts.

A bracing element for a lattice girder supporting frame having four straight truss braces arranged along edges of a pyramid, wherein parts of the truss braces in the area of a base surface of the pyramid are connected to each other by cross-ties that have been welded to the brace parts.