Abstract: A collapsible bridge has two track girders constructed as truss girders with a triangular cross-section. A chord profile is provided at each triangulation point and two corners of the triangular cross-section are situated at the same level with the third corner situated above the corner. A pair of truss planes are formed from diagonal struts, a lower chord and an upper chord, with lower and upper truss nodes respectively being formed at connection points of two diagonal struts and a lower chord and an upper chord respectively. The two track girders are force-lockingly connected by transverse girders. Roadway planks are provided which are aligned in the longitudinal direction of the bridge and are force-lockingly connected with the transverse girders.

Abstract: A dismountable bridge, having two track carriers which, viewed in the longitudinal direction of the bridge, are divided into several identical modules, in which case the two track carriers are each spanned by a vault and are suspended at the latter. The vaults are divided into several modules in the longitudinal direction of the bridge and are adapted in their modular division to the modular division of the track carriers. The vaults and the track carriers are equipped at their ends with end pieces. The modules of the vaults have mutually identical constructions and the end pieces of the vaults are connected in a torque-resistant manner with the end pieces of the respective track carriers. The end pieces are constructed such that they are capable of compensating the length differences between the track carriers and the vaults in the case of different bridge lengths.

Abstract: A collapsible bridge and laying method for a collapsible bridge where bridge girders are pushed over an obstacle by way of a laying beam positioned in front of the obstacle to be bridged. Rollers and roller carriers carrying the rollers are fastened to the bridge girders, the rollers running in rails arranged on the laying beam. During the laying operation, the rollers with the pertaining roller carrier leaving the rail of the laying beam are removed from the bridge girder and are mounted again at a different point of the bridge girder which is momentarily situated in front of the entry into the rail of the laying beam. This process of using and removing the rollers from the bridge girder is repeated during laying of the bridge. The bridge girder can include a plurality of detachably connectible bridge girder sections.

Abstract: A dismountable bridge, having two track carriers which, viewed in the longitudinal direction of the bridge, are divided into several identical modules, in which case the two track carriers are each spanned by a vault and are suspended at the latter. The vaults are divided into several modules in the longitudinal direction of the bridge and are adapted in their modular division to the modular division of the track carriers. The vaults and the track carriers are equipped at their ends with end pieces. The modules of the vaults have mutually identical constructions and the end pieces of the vaults are connected in a torque-resistant manner with the end pieces of the respective track carriers. The end pieces are constructed such that they are capable of compensating the length differences between the track carriers and the vaults in the case of different bridge lengths.

Abstract: A collapsible bridge has two track girders constructed as truss girders with a triangular cross-section. A chord profile is provided at each triangulation point and two corners of the triangular cross-section are situated at the same level with the third corner situated above the corner. A pair of truss planes are formed from diagonal struts, a lower chord and an upper chord, with lower and upper truss nodes respectively being formed at connection points of two diagonal struts and a lower chord and an upper chord respectively. The two track girders are force-lockingly connected by transverse girders. Roadway planks are provided which are aligned in the longitudinal direction of the bridge and are force-lockingly connected with the transverse girders.

Abstract: A collapsible bridge and laying method for a collapsible bridge is provided where bridge girders are pushed over an obstacle by way of a laying beam positioned in front of the obstacle to be bridged. Rollers and roller carriers carrying the rollers are fastened to the bridge girders, the rollers running in rails arranged on the laying beam. During the laying operation, the rollers with the pertaining roller carrier leaving the rail of the laying beam are removed from the bridge girder and are mounted again at a different point of the bridge girder which is momentarily situated in front of the entry into the rail of the laying beam. This process of using and removing the rollers from the bridge girder is repeated during laying of the bridge. The bridge girder can include a plurality of detachably connectible bridge girder sections.

Abstract: A lightweight mobile bridge has upper belts and/or lower belts made of composite fiber materials. The belts provide for longitudinal tensile support for vertically extending side walls formed with shear ribs made of metal.

Abstract: Tension rod for use as a chord for bridges, having a middle part consisting of fiber composite material and having ends consisting of metallic material. The middle and end parts are connected by a glued tapered overlap.

Abstract: A trough bridge is provided with a plane roadway and upward extending side walls. Top chords are arranged on the upper ends of the side walls. The bridge can be divided along the roadway into an arbitrary number of modules, the length of which may be adapted to the available transport length. The individual bridge modules may be nested in each other for transport such that a stack with a very small transport height results.