Preparation method of prestressed prefabricated component

Abstract

The invention relates to the technical field of prestressed prefabricated components, and discloses a preparation method of a prestressed prefabricated component. The preparation method comprises thefollowing steps that when an original component is heated and cured, a curing system to control the time for standing, heating, constant temperature and cooling is formulated, standing is performed atnormal temperature for 2-6 hours, the difference value between the surface temperature of the prefabricated component discharged out of a pool and the environment temperature does not exceed 25 DEG C, the original component adopts a prefabricated component joint surface connected by post-poured concrete or mortar and grouting materials, and rough surface treatment is carried out according to design requirements during manufacturing. When the design has no specific requirements, the rough surface can be manufactured through chemical treatment, galling or chiseling and other methods, a sandwichexternal wallboard of the original component is suitable for being produced through a flat die technology, and during production, an external wallboard concrete layer needs to be poured firstly, thena heat preservation material and a pulling piece need to be installed, and finally an internal wallboard concrete layer needs to be poured; and when a vertical die technology is adopted for production, inner and outer wallboard concrete layers should be poured synchronously, and measures should be taken to ensure accurate positions of thermal insulation materials and tie pieces.

Description

technical field [0001] The invention relates to the technical field of prestressed prefabricated components, in particular to a preparation method of prestressed prefabricated components. Background technique [0002] There are many kinds of prefabricated component molds, common concrete component molds, component molds, hexagonal reservoir slope protection molds, bridge cover molds, urban road side stones, cement component molds, cement product component molds, concrete product molds, canal cover molds, Hollow hexagonal slope protection brick mold, road and bridge cover mold, cable groove cover mold, roadbed cover mold, electric power cover mold, water conservancy irrigation mold, plastic manhole cover mold, water conservancy cover mold, ditch cover mold, tunnel cover mold, Trench cover mold. [0003] At present, in the foundation pit support structure using prestressed prefabricated components, the commonly used components are: prestressed prefabricated pipe piles, prestr...

AI Technical Summary

Problems solved by technology

However, since the prestressed longitudinal reinforcement of this kind of member is full-length reinforcement and equal section strength at present, in the actual support project, the distribution of earth pressure changes along the depth of the foundation pit, and the general rule is along the upper part of the member length and The force on the lower part is relatively small, and the local force in the middle of the component reaches the maximum. For example, when using internal support or anchor rod, the bending moment and shear force of the support pile are much larger than other sections at the support point or anchor point. , the support piles are very unevenly stressed in the longitudinal direction, which brings about the irrationality of the current general reinforcement and equal section strength. That is to say, for the usual reinforcement members with equal section strength, only Local segment strength is fully utilized, while in most segments the strength is underutilized

In this way, if the reinforcement is reinforced according to the maximum force, it will cause waste and is not economical.