What should be paid attention to when Bailey steel bridge deck deck

Bailey steel bridge deck head slab: The bridge head slab is divided into two types: buckled and unbuckled, used to connect the bridge deck to the road surface. One end was on a beam behind the bridge, the other on the bank. If the foundation is soft, a common pillow can be buried and the board supported on a common pillow. The bridge deck is similar to the longeron. The difference is that the I-beam of the bridge head slab is 12 cm high in the middle and the height of both ends is the same as the height of the longeron (10 cm) to keep the deck flat. Welded arc brace under bending flange. If the height difference between the bridge deck and the road surface is large, two or more slats can be used, supported by a beam in the middle, and the beam is placed within the four slats.

1. Bell steel bridge rock: used to control the starting direction of the analysis frame and bear the weight of the bridge. There is a half-crescent iron underneath to support the axle. The rock can be moved up and down freely, with four small rollers on either side. When pushing and pulling the bridge span, the string bar under the analysis frame is always controlled in the rock center to ensure the direction of the bridge span when pushing and pulling. When building a bridge, the two sides should be set up rock. Rock weighs 102kg and has a load of 250kg. The height of the rock on the bridge is 37.4 cm, on the bridge and on the rock sample.

2. Flat roll (Figure 3138b) is used to bear the weight of the bridge and reduce the resistance when starting. Roll out the shore rock after every 6 meters set a group. Each flat roll bears 60 kg. The flat roll height is 19 cm. When placed on the plate, the height is 21.5 cm.

3. Bailey steel bridge rock and roll template: used to stabilize the roller, increase the ground area of the roller, overcome the roller sinking, simple and quick to determine the position of the rock and roll and roll.

4. Bailey steel bridge oblique string rod: used to strengthen the string rod bridge in the process of propulsion through the roller smoothly. Divided into Yin head and Yang head; The starting and ending ends of the string rod installed under the analysis frame are connected with the strengthening string rod by a dowel and a hook at the tail of the inclined string rod.