Construction technology of Quanzhou bridge drainage pipe

Description :

Construction technology for bridge drainage pipes: 1. The construction of drainage pipes should be carried out according to the design requirements. The drainage pipes should protrude from the bottom of the structure by no less than 30mm and have a longitudinal spacing of no more than 4m. 2. For bridges on overpasses and highways, the drainage pipes should not be directly hung under the slab. They can be directly led to the ground through longitudinal and vertical drainage pipes, or according to the design requirements. The pipes should have good fixing devices, such as anchor rails and clamps, and other embedded parts. Characteristics of semi-circular cast iron drainage pipe: This type of concealed drainage pipe is buried in layers and batches, and has the ability to adapt to the gradual deformation of surrounding rock; Avoid direct flow of surrounding rock mud and sand into the drainage pipe, which may cause blockage; Due to the smooth drainage, the effect of water pressure is eliminated, the stress condition of the lining structure is improved, and the occurrence of cracks is reduced; Due to its deep burial inside the tunnel lining, it can effectively prevent freezing inside the cast iron drainage pipe and damage to the structure caused by frost heave in generally cold regions; Due to its rigid orientation, the buried cast iron drainage pipe has a high water flow velocity inside the pipe. Each cast iron drainage pipe generally has a drainage capacity of not less than 50m/h and can adapt to the discharge of groundwater under various geological conditions. Cast iron drain pipe is a pipe formed by casting cast iron. Mainly used for drainage facilities of bridges and highways. Cast iron pipes are used for water supply, drainage, and gas transmission pipelines, including cast iron straight pipes and fittings. Low labor intensity. According to different casting methods, it is divided into continuous cast iron pipes and centrifugal cast iron pipes, among which centrifugal cast iron pipes are further divided into two types: sand mold and metal mold. According to different materials, they are divided into gray cast iron pipes and ductile iron pipes.

AfterSalesService :

• Quanzhou Bridge Drain Pipe