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

The technology of a hollow slab beam and a construction method, which is applied in the directions of manufacturing tools, ceramic forming machines, auxiliary forming equipment, etc., can solve problems such as low construction efficiency, and achieve the effects of improving work efficiency, reducing erosion and increasing durability.

Inactive Publication Date: 2021-04-30
THE 4TH ENG CO LTD OF CHINA RAILWAY 16TH BUREAU GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Embodiment Construction

[0032] The present application is described in further detail below.

[0033] The embodiment of the present application discloses a construction method for prefabricating a hollow slab girder without demolition of a foam mandrel, which includes the following steps:

[0034] Step 1: Pedestal production: Design and manufacture the pedestal according to the design index of the prefabricated hollow slab beam. The pedestal is made of 6mm thick steel plate. The base of the pedestal is compacted with a road roller to make it have sufficient bearing capacity, and then the concrete foundation is poured on the base to harden, and the pedestal is installed on the foundation.

[0035] Step 2: Binding of bottom plate and web steel bars: The steel bars are processed in the processing shed and bound on the pedestal. The intersections of the steel bars are bound firmly with iron wires, and the intersections of the stressed steel bars are welded firmly, and the side support pads under the rei...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/14B28B7/34B28B7/00B28B17/00B28B23/02
CPCB28B1/14B28B7/0002B28B7/0014B28B7/348B28B17/0063B28B23/02
Inventor 田小路公彦良成孝玉谢光明孟祥龙李向东高晓冬郑文华孟岩杜磊
Owner THE 4TH ENG CO LTD OF CHINA RAILWAY 16TH BUREAU GRP CO LTD
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