How to construct and maintain The Bailey Bridge of Great Wall Group?

Bailey bridge is widely used in the world, the original Bailey Army Bridge was designed by British engineers in 1938 at the beginning of the Second World War. During world War II, this kind of military steel bridge was widely used. After the war, many countries turned Bailey steel bridge into civilian use after some improvement. Now, Bailey steel bridge plays an irreplaceable role in traffic construction, flood fighting and rescue.

Construction steps of bailey frame support

1. The nose holder shall be installed before assembling the bailey support. The installation method is as follows: The bailey trusses are assembled on the rock that is pushed out of the bank, one end of the truss piece is placed on the rock, the other end is placed on the temporary mat.

2. The male and female heads of the truss plates should be consistent. A beam should be placed behind the front vertical rod. The two rows of holes at the bottom of the beam shall be placed into the bolts on the lower chord beam plate of the two truss plates respectively and clamped with the beam clamp. Do not tighten it for now. Tighten the diagonal brace on the beam after installation.

3. Install the two truss pieces. At the same time, the bailey piece should be installed on the front truss beam with diagonal supports, and the two truss pieces should be installed on the rear of the vertical rod.

4. Install the three-section truss, install the wind resistance rod on the first truss plate, and install the diagonal brace on the two-section truss plate beam. The nose frame should be installed in sequence, and the four truss plates should be installed into the nose frame.

5. Bridge rolled out the winch traction, traction process to achieve unified command, consistent steps, operation coordination, check the operation of the roller and bridge at any time, if there is any situation, should immediately stop the operation, to continue to push after the problem is solved.

6. After pushing the bridge to the position, remove the nose frame, sit down with a jack against the lower chord of the bridge, check the bailey piece, and tighten all supports, beam fixtures and wind tie rods.

7. Laying of longerons, bridge panels, steel plates, etc.

Maintenance method of Bailey steel bridge

Bailey plate is the steel structure of Bailey steel bridge. Bailey plate is easy to rust and corrosion, especially in the coastal area, which is more vulnerable to erosion. Therefore, it is necessary to maintain the steel bridge frequently to avoid the rust of bailey plate. Once rust will inevitably reduce the bearing capacity and service life of steel bridge, so regular rust cleaning paint maintenance is an important link to ensure the life of the bridge, must not be ignored.

In order to prevent the corrosion of Beret steel bridge, in its maintenance, should carefully check the steel bridge each component, each part of the paint is not falling off, rust and deformation. Dust, oil, rust spots and all kinds of dirt should be cleaned up on the rusty parts first, and then spray paint, spray paint evenly, paint smooth, never leak spray. If any parts are found to be damaged, it is required that the bailey plates be replaced to ensure the continued safe use of the steel bridge.

More bailey bridge related knowledge, welcome to visit https://www.steelbaileybridge.com

Great Wall Heavy Industry co., LTD is located in Zhenjiang city, Jiangsu Province, north of the Yangtze River, located in the Yangtze River Delta economic belt, located in shanghai-Nanjing high-speed railway, Beijing-Shanghai high-speed railway, 30 kilometers from Zhenjiang port, 50 kilometers from Changzhou Airport, 70 kilometers from Nanjing Airport, Yangtai airport. The company has passed ISO9001 quality management system certification, BV certification of welding process and welder, and SGS, CCIC, CNAS and other third-party certification organizations testing raw materials and finished products.