How to install assembled highway steel bridge?

Bailey frame is a basic component unit of steel bridge.It can be used to assemble many different components and devices. Bailey bridge is so far, the wider application of popular a kind of bridge structure, bailey truss has many advantages, product structure is simple, easy to transport and erect fast, break down easily. At the same time, bailey frame also has a large bearing capacity, good structural rigidity, fatigue resistance and many other advantages.

Bailey truss can also be referred to as the "assembled highway bridge steel", formerly known as "321" highway bridge steel. It is a steel highway bridge for war in China. Bailey frame is a kind of steel frame formed by a certain unit, which can be used to splice and assemble many components and equipment. Parts: truss by the upper and lower chord, vertical and diagonal welded together, on the lower chord with joint of Yin and Yang, the end of the fitting with truss connecting pin hole.

Truss chord is composed of two 10 root channel (back), on the lower chord, how block welding steel plate with circular hole, in strengthening the chord and bottom chord from and double-deck truss connecting bolt hole, within the upper chord and four bolt holes for connecting racks, between the two holes is for double row or more rows of truss with internode connection, Depend on both ends of the two holes is cross internode connection. More rows of truss beam or column when using, must strengthen the upper and lower two truss with brace of joints.

On the lower chord, is equipped with four beam plate, its top tenon, fixed to the position of the beam in the plane. On the bottom chord of the web channel steel end of also has two elliptic hole, for the use of connection rod wind resistance.

The truss vertical rod is made of 8# I-steel, and there is a square hole on the side of the vertical rod by the lower chord rod, which is used for the beam fixture to fix the beam.

There may be some customers get bailey beam after also don't know how to install, installation of bailey bridge also needs to pay attention to some things, here and see it together.

Installation method is as follows:

1, cap beam bottom a single set of 45 ㎝ bailey beam 15 m long, wide, 1.8 m high, total weight is about 7.5 t. Protection of bailey beam 27 m long, 90 cm wide, 1.8 m high.

2, Bailey beam structure includes truss, pin, safety bolt, strengthening string and other four components.

3, berea piece comes into play, should one by one piece, one by one member organization acceptance, for donuse twisted, bolt connection is not secure to reinforce or replacement, berea piece of rust should be removed and serious corrosion will not be used, for individual node entities strengthen by welding crack, fall off.

4. According to the actual situation of the site, the lifting site of Bailey plate is selected at the corner between special lines of the aluminum factory.

5, every three groups of lifting once, before lifting should be connected to the bailey panel.

6, support brace, brace connection structure, wind resistance, beam clamp, bar truss bolt, chord, brace, brace bolt and other artifacts.

7. Before hoisting, the exact position of each group of Bailey beam should be released on both sides of i-steel, and the manual auxiliary crane should be in place accurately. Bailey beam is placed on the distribution of transverse beam, using the u-shaped buckle connected to the distribution of transverse beam.

8. All kinds of rods should be installed strictly in accordance with the instructions, and special personnel should be organized to check and record.

9. The maximum total weight of each three groups of bailey sheet is 7.5T, and 25T automobile crane can be selected according to the crane performance table.

10. The crane is located 15m in the small mileage direction of the Berei beam and 20m to the left of the bridge center line. The lifting distance, that is, the distance between the crane position and the lifting point, is 25m, and the lifting height is 12m.

More bailey bridge installation information please focus on zhenjiang Great Wall heavy industry technology co., LTD.

Great Wall heavy industry production of assembled highway bridge steel, bailey bridge, bailey beam and other products enjoy good reputation both at home and abroad, exported to dozens of countries, have been exported to Indonesia, Nepal, Congo (cloth), myanmar (Burma), outer Mongolia, kyrgyzstan, Mexico, Chad, America, Mexico, Trinidad and Tobago, mozambique, Tanzania, Kenya, Ecuador, Dominic and other countries and regions.