Repairing method of cracks in sealed beams on prestressed beamless floors

Abstract

The invention discloses a restoration processing method of fissures on upper sealing girders of prestress girderless floors. The restoration processing method includes the steps of building a support structure bellow the upper portion of a girderless floor, incising a sealing girder which connects the upper portion of the girderless floor with the lower portion of the girderless floor in a horizontal direction; stuffing asphaltic felts into a horizontal fissure caused by incising, and using epoxy resin to conduct grouting treatment on the fissure on the sealing girder. The restoration processing method of fissures on upper sealing girders of prestress girderless floors has the advantages that by arranging the horizontal fissure, shear stress and torsion performed on the sealing girder by the upper portion and lower portion of the girderless floor is effectively released, during the process of expanding and descending, and the sealing girder is prevented from continuously forming fissures under the shearing action; the asphaltic felts arranged inside the horizontal fissure is not only capable of taking an effect of water proofing but an effect of lubrication.

Description

technical field [0001] The invention belongs to the field of building construction, and in particular relates to a method for repairing cracks of sealing beams on a prestressed beamless floor. Background technique [0002] In the prior art, a building with an excessively large area is usually divided into multiple areas for phased construction, and after the construction is completed, the various areas of the building are connected together to form an overall building. In order to ensure the waterproof effect, sealing beams are usually used to connect the floors of various areas of the building. However, due to the phased construction of each area of ​​the building, each area of ​​the building is an independent stress system, so that the connection between the various areas of the building The sealing beams of the regional floor slabs have problems of stress instability and cracking under the action of temperature shrinkage, prestress tension and other problems. In the prio...

AI Technical Summary

Problems solved by technology

In order to ensure the waterproof effect, sealing beams are usually used to connect the floors of various areas of the building. The sealing beams of the regional floor slabs have problems of stress instability and cracking under the action of temperature shrinkage, prestress tension, etc.

In the prior art, for the cracking problem of buildings, mortar is usually used for repairing, but for the sealing beams connecting various areas of the building, repairing with mortar can only alleviate the symptoms of cracking, and the sealing beams will continue to crack after repairing

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