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  4. Advantages of prestressed plastic corrug...

Advantages of prestressed plastic corrugated pipe equipment

Advantages of prestressed plastic corrugated pipe equipment


  1. The production efficiency of the prestressed plastic corrugated pipe equipment is high, the equipment is durable, and the operation is simple.

  2. The prestressed plastic corrugated pipe equipment greatly expands the multi-functional performance of the machine, and the same production line can produce multiple specifications of pipes.

  3. The prestressed plastic corrugated pipe equipment has compact structure, simple operation and high automation rate, which greatly reduces labor costs.

  4. The product quality of the same consumables has higher ring stiffness and better flexibility.

  Advantages of prestressed plastic corrugated pipe equipment

  Some standard requirements for the production of prestressed plastic corrugated pipes

Advantages of prestressed plastic corrugated pipe equipment

  1. Appearance characteristics.

  JT/T529-2004 "Plastic corrugated pipes for prestressed concrete bridges" stipulates that the wave distance is 30mm~60mm.

The corrugation will prevent the concrete stones from being embedded in the corrugated pipe groove, and the layered concrete outside the corrugated pipe will affect the overall strength of the bridge. Some manufacturers use materials that are too poor-the strength of the material is too low, and the corrugations are designed very densely to increase stiffness. The result of too small wave distance is: On the one hand, the corrugated pipe is easy to bend, and the construction unit shortens the positioning rib from 1 meter to 0.5 meter during the construction process to reduce the bending caused by the floating of the corrugated pipe. Pour concrete. , It increases the construction difficulty of the construction unit; on the other hand, it also brings the concrete aggregate can not be embedded in the corrugated pipe groove, and the corrugated pipe and the layered concrete of the corrugated pipe affect the overall strength of the bridge.

  2. Mechanical properties

  In the FIP construction guideline and the industry standard JT/T529-2004, a local lateral load test is carried out: that is, a pressure of 800N load R6 is applied to the bellows, and the load is maintained for 2 minutes, the surface pressure tube does not break; unload 5 After minutes, the residual deformation shall not exceed 10% of the outer diameter of the pipe. The prescribed radial concentrated load of 800N should be considered for people with ordinary weight carrying ordinary weight. When stepping on the corrugated pipe, the corrugated pipe supports the local pressure formed by the reinforcing steel bars or other steel bars on the corrugated pipe. Or when pouring concrete, the bellows will float, and the steel bars will be locally restrained by the bellows. The residual deformation is not more than 10% of the nominal value of the inner diameter (round tube), so as not to affect the penetration and local protrusion of the tube bundle, and increase the risk of tube wall wear and damage to the tension. Therefore, the setting of this detection parameter is very important, which is related to the overall strength and life of the bridge. The corrugated pipe has constant material strength and wall thickness, which is the main method to ensure that the mechanical performance of the corrugated pipe meets the standard.

If you want to know more about it please do not hesitate to contact me. WhatsApp:+86-15966835076.


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