Tunnel sheets for the mounting frame and berg - and tunnel construction, the three or four, running parallel to each other, a triangle or a rectangle, the girder elements forming strengthening elements formed by means of shaped sheet metal parts are spatially connected to one another, wherein the stiffening elements which is provided with openings plane as the web plates 7 or webs are formed which in each case two girder elements connect. The tunnel lining frame can also be composed of a joined-together double - t - profiles or special profiles, the webs sine-wave shape and which are separated by a half sine waves length is arranged offset to the wave maxima and minima are welded so as to contact.
展开▼
