Construction method for strengthening concrete floor

Abstract

The invention discloses a construction method for strengthening a concrete floor. The method is characterized by including the steps of firstly, drilling slots on the concrete floor; secondly, stripping off a main reinforcement protecting layer of the concrete floor, welding embedded iron parts to main reinforcement of the concrete floor, and welding a steel turning block to each embedded iron part; thirdly stripping off a concrete column longitudinal reinforcement protecting layer of a concrete column, and welding bearing steel plates to concrete column longitudinal reinforcement; fourthly, cleaning concrete floor scraps, and spraying concrete between each two steel turning blocks under the concrete floor; fifthly, mounting a guide plate in each slot of the concrete floor; sixthly, tensioning prestress stranded steel wires with an electrothermal method one day after concrete spraying is completed; seventhly using high-pressure grouting to grout high-strength cement paste into holes, penetrated by the prestress stranded steel wires, in the concrete floor; eighthly, setting cement mortar at the bottom of the concrete floor to serve as a protecting layer.

Description

technical field [0001] The invention relates to a concrete floor, in particular to a concrete floor reinforcement construction method. Background technique [0002] In the construction of concrete slabs, quality accidents often occur due to construction and design reasons. The main reasons for the construction are: premature demolition of the formwork; premature loading of the newly poured concrete; untimely maintenance, lack of strict management during pouring, stepped on the surface negative reinforcement, misplaced bearings, and pouring concrete in rainy days. Design reasons are: the effective height of the concrete floor is not enough. Insufficient reinforcement of concrete slabs. The minimum reinforcement ratio cannot meet the demand, the selection of reinforcement specifications is unreasonable, and the distribution of reinforcement spacing is too large. Excessive concentration of pipelines reduces the cross-section of the concrete floor, thereby causing stress conc...

AI Technical Summary

Problems solved by technology

The minimum reinforcement ratio cannot meet the demand, the selection of reinforcement specifications is not reasonable, and the distribution of reinforcement spacing is too large

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