Gap type drainage ditch prefabrication and installation construction method based on core mold with air bag sleeved with PVC pipe

Abstract

The invention relates to a gap type drainage ditch prefabrication and installation construction method based on a core mold with an air bag sleeved with a PVC pipe. The method comprises the followingsteps that S1, a reinforcement cage and a prefabrication form are manufactured, the prefabrication form is provided with a cavity with an opening in the upper end, and form holes are reserved in the two ends in the horizontal direction, wherein a core form comprises the PVC pipe and the rubber air bag, a notch extending in the axial direction is formed in one side of the PVC pipe, during assembly,the reinforcement cage is installed in the cavity firstly, the PVC pipe with the rubber air bag plugged inside penetrates through the reinforcement cage, the two ends of the PVC pipe correspond to the mold holes, and air is inflated into the air bag to tension the PVC pipe, then concrete is poured into the prefabrication form, and after a prefabricated part reaches a certain strength, form stripping maintenance is carried out; S2, grooves are excavated, and the grooves are leveled; and S3, prefabricated drainage ditches are sequentially installed in the grooves and subjected to sealing treatment, and then the grooves are backfilled. The method has the advantages of being high in reusability rate, low in construction cost, attractive in prefabricated part finished product and high in construction quality.

Description

technical field [0001] The invention relates to the technical field of drainage ditch construction, in particular to a prefabricated installation construction method of a slot-type drainage ditch based on an airbag mandrel in a PVC pipe. Background technique [0002] As an indispensable structure on the construction site, the drainage ditch usually adopts the cast-in-place mode. When constructing the traditional cast-in-place drainage ditch, it often needs to go through multiple processes such as formwork and concrete pouring, which is labor-intensive and time-consuming. The construction quality of the drainage ditch cannot be effectively guaranteed. The cast-in-place drainage ditch after maintenance has many defects, and even problems such as mold swelling and slurry leakage, which seriously affect the service life of the drainage ditch. [0003] The Chinese patent with authorized notification number CN110792148A discloses a reinforced concrete prefabricated drainage ditch...

AI Technical Summary

Problems solved by technology

[0004] Although it solves the problems of mold expansion and grout leakage through prefabrication, it divides the drainage ditch into multiple sections and pours them separately, and finally joins them together. During the construction process, the flatness of the excavated trench and the slope of the side formwork, etc. The requirements are high, the construction is difficult, and the integrity of the combination is poor. It is easy to separate on the road surface that is often subject to vibration, such as the side of the road; and if the integral pouring is used on the basis, the mold and grouting will be exhausted. The requirements are high, and the formwork removal is difficult, which will also increase the difficulty of construction

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