The Steel Bridge Expansion Joint Satisfies The Deck Deformation

After the construction is completed, neon lights will be hung in the navigation hole of the steel bridge, which will be turned on at night to remind passing ships. When multi-row trusses of steel bridge are used as beams or columns, it is necessary to strengthen the joints of the upper and lower trusses with support frames. The construction materials of the frame mainly rely on manual transfer and partial crane transportation. In order to ensure the transportation of all construction materials, the construction personnel should cooperate with the crane safely and carefully.

The lower chord is provided with four cross beam backing plates, the upper part of which is provided with a tenon to fix the position of the cross beam on the plane; No holes shall be left in the body of the frame. During construction, the frame shall be covered with a safety net and tied with double strands of iron wire at four points. There shall be no soft phenomenon. The width of the expansion joint is generally two centimeters to three centimeters, the joint is filled with insulation material, and the spacing of the two expansion joints is clearly specified in the building structure code.

In order to meet the requirements of bridge floor deformation, bridge expansion joints are usually installed between the two beam ends, between the beam end and the abutment or at the hinged position of the bridge. The construction requirements of the expansion joint require that the expansion joint can be freely expanded in two directions parallel to and perpendicular to the axis of the bridge, and the vehicle should be smooth, no sudden jump and noise when it is running, and can prevent the infiltration of rain and garbage soil.

When there is water in the internal space of the steel box girder, the cause should be found out, disposal measures should be taken in time, and the detection frequency can be increased accordingly to check the disposal effect, and the loose anchor bolt should be tightened, the fastening force should meet the design requirements, the daily maintenance of the derrick and tie rod to maintain the good coating of the steel structure, and the regular stop of rust removal and anti-rust disposal to maintain the normal connection of the steel structure. The sleeper pileup is filled with stone to increase the anti-sliding of the abutment.