One-time forming construction method for non-dismantling foam core mold prefabricated hollow slab beam

Abstract

The invention relates to a one-time forming construction method for a non-dismantling foam core mold prefabricated hollow slab beam. The method comprises the following steps that step 1, a pedestal is manufactured, and steel bars are bound; step 2, cushion blocks are bound to steel bar layers, a contact line is arranged on the bottom face of a foam core mold, the end, located on the foam core mold, of the contact line is disconnected, and a warning device is installed on the contact line; the foam core mold is installed in a U-shaped space defined by a bottom plate steel bar layer and a web steel bar layer, and the cushion blocks abuts against the foam core mold; and step 3, top plate steel bars are bound, the cushion blocks are bound, side molds and end molds are installed, concrete is poured, stratum concrete is poured firstly during pouring, and side face concrete and top face concrete are poured after warning of the warning device. The foam core mold is used as a non-dismantling inner mold, so that the hollow slab beam is formed through one-time pouring, the construction process is simplified, and the working efficiency is improved; and a liquid level relay alarm is adopted, so that the concrete on the top face of a bottom plate is prevented from being separated from the foam core mold.

Description

technical field [0001] The present application relates to the field of hollow slab beam prefabrication, in particular to a construction method for prefabricating a hollow slab beam with a foam mandrel without demolition. Background technique [0002] With the continuous development of the national economy, the role and status of road traffic in the national economy is becoming more and more prominent, and the bridge as a hub in road traffic has also been greatly developed. Prestressed and non-prestressed hollow slab girder assembly structures are mostly used in the upper part of medium and small span bridges. The hollow slab girder has a simple structure. Convenience, simple process, economical materials, easy factory and standardized production, convenient transportation and hoisting, wide application range, etc., have been widely used in my country's highways and bridges, and greatly meet the needs of my country's production and construction. [0003] The existing prefabri...

AI Technical Summary

Problems solved by technology

[0004] In order to improve the technical problems of steel inner formwork construction and low construction efficiency, this application provides a one-time forming construction method for prefabricated hollow slab beams without dismantling foam mandrels