Advantages and Applications of Prestressed Corrugated Pipe
Release time:
2023-04-03
Advantages and uses of prestressed corrugated pipe
There are many advantages of prestressed corrugated pipe, which adopts double thread, and its performance indexes such as strengthening stiffness are better than using single thread. It has good bonding with concrete, good engineering adaptability, and can ensure good quality of the strand orifice, straightness and smoothness of the curve, and its superiority is more prominent for long steel bundles of large span bridges. The pipe friction loss is small. Since the prestressing bellows and steel strand are point contact, the friction coefficient and deviation coefficient of the pipe will also be very small, thus reducing the loss of friction and increasing the effective prestressing force. The friction coefficient of steel strand and pipe wall is 0.16~0.22, the average is 0.19; the deviation coefficient k is (0.6~1.0)x10 a sl., the average is o.8x10 a 3 Zm. The work efficiency of prestressed corrugated pipe is high and the economic benefit is significant. The use of prestressed corrugated pipe can guarantee the quality of the project, and it is easy to operate and easy to pierce the bundle, which can shorten the construction period and save the investment, thus making the economic benefits significantly higher. Prestressed corrugated pipe is very widely used, it is applied to bridges, multi-storey factory buildings, parking lots, office buildings, apartment buildings, gymnasiums and other large buildings. In modern construction, it has been more widely used, it is light, thin-walled, rigid, not broken, no slurry leakage, because of the obvious concave and convex double waves on the exterior of the pipe body, the steel pipe joints are tightly embossed type, firm and not unbuttoned, the contact grip with the concrete is extremely strong after casting on site, and the concrete is formed into a complete one, which enhances the seismic performance of the structure. It has excellent function, compared with the general solid flat slab, it has light self-weight, large span, small deflection, no column cap, good safety, low comprehensive cost, thus improving the building headroom, increasing the use and sales area, compared with the existing domestic ordinary beam-slab structure, solid beamless slab, unbonded prestressed concrete floor slab, not only saves steel, but also saves the amount of concrete, saves vertical water, electricity, air conditioning, elevator, interior and exterior walls It also has the effect of sound and heat insulation, and brings considerable economic benefits to the owner.
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