Bailey frame is a steel frame forming a certain unit, which can be used to assemble a lot of components and equipment. The length and width of the bailey frame is generally 3m×1.5m, which has been greatly developed in China, widely used in national defense combat readiness, traffic engineering, municipal water conservancy engineering, and is a more widely used assembly load-bearing component in China. The main structure of Pele Steel Bridge is composed of truss unit, truss pin, reinforcement string rod, truss bolt and string rod bolt.
1. Truss (plate) and truss pin (bailey pin)
Truss: domestic 1500×3000 shell plate is 1.5m high, single length 3.0m, each truss weight 270kg; made of upper and lower string rod, vertical rod and inclined support welding. One end of the upper and lower string rod is the penis, the other end is the Yang head, in the Yin, the Yang head have a pin hole. When splicing the two trusses are together, insert the positive head of one section into the head of the other section, align the pin hole and plug the pin.
Truss pin: It is used for connecting the truss. There is a small round hole at one end of the pin and a insurance card is inserted during mounting to prevent the pin from falling off. There is a groove at the top of the pin in the same direction as the small round hole. When installation, the groove is parallel to the upper and lower string (Figure 2-11) to insert the insurance card into the pin hole smoothly. The truss pin is of 30CrMnTi, 49.5mm diameter and weighs 3kg.
2. bailey steel bridge reinforced string rod: made of two no. 10 hot rolling tank steel joint welding, weighing 80kg. At one end of the strengthening string is the penis, and at the other end is the positive head. In the middle of the reinforced string rod is provided with the support frame hole and the string rod bolt hole. Strengthen the connection between the string rod and the upper and lower string rod of the truss. The purpose of strengthening the string bar is to improve the bending ability of the truss and give full play to the shear effect of the truss belly bar. Because the end bending moment of Pele steel bridge is very small, the head and tail truss does not need to be reinforced string rod.
The steel structure component of bailey sheet, bailey sheet is prone to rust products, especially in the coastal areas, it is more prone to rust, so the steel bridge should be often maintained to avoid rust. Once the corrosion will inevitably reduce the carrying capacity and service life of the steel bridge, so the timely rust removal and paint maintenance is an important link to ensure the life of the bridge, must not be ignored.
In order to prevent the corrosion of the bailey steel bridge, the engineer shall carefully check the various parts of each part of the steel bridge for paint loss, corrosion and component deformation during the maintenance. To the corroded part, strict requirements for workers to first dust, oil, rust spots and all kinds of dirt to clean up, and then spray paint, paint uniform, paint surface flat, never leakage spray. If any component deformation is found, the Bailey tablets shall be replaced. To ensure the continued safe use of the steel bridge.
For more bailey bridge installation information, please pay attention to Zhenjiang Great Wall Heavy Industry Technology Co., LTD. In order to meet the high expectations of customers, we have a strong team, for China steel structure prefabricated bridge emergency Bailey bridge regeneration design including marketing, sales, design, production, quality control, packaging, warehousing, and logistics, the best overall service, we can provide you with the most positive price and the best quality, because we are very skilled!So remember to don’t hesitate and talk to us.
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Post time: Jul-21-2022