Installation of various support frames of Bailey Bridge

Bailey steel bridge plays an irreplaceable role in the construction of traffic and flood fighting. The main structure of the bridge is composed of truss units, truss dowels, reinforcement strings, truss bolts, string bolts, etc. The main structure is composed of each 3-meter-long truss connected by pins, located on both sides of the driveway. The truss is connected with the beam, and two beams are set for each truss. The deck is laid at both ends of the bridge, and the end columns are arranged at both ends of the bridge. The main trusses are supported on the bridge and support plates by end columns, and the bridge and embankment can be connected by approach Bridges. The whole bridge is equipped with inclined support, wind tie rod, support frame, connecting plate and other connecting parts, so that the bridge forms a stable spatial structure.

Each section of the Bailey Bridge is fitted with a variety of support frames that strengthen the misaligned joint connections between the stringers and the horizontal supports, thereby reducing the displacement of the main girder caused by the deformation of the truss joints. Tighten all the bolts and nuts attaching the truss and insert the safety pin once the truss pin is in place. The main beam needs to be strengthened for the installation of the chord, and all support positions need to be locally strengthened to prevent the chord from being deformed due to excessive local forces. The three parts of the end of the main beam adopt high shear trusses, which form the necessary bending degree after assembly and reduce the downward torsion. The main beam of Beret Bridge is connected with the beam as a whole, and can be pulled when the length reaches 10 meters.