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Cross-layer column quality defect repairing and reinforcing method for frame-core tube

A technology with quality defects and core tubes, applied in building maintenance, construction, building types, etc., can solve problems such as adverse effects of column bearing functions, hidden safety hazards, etc., to achieve high application and promotion value, easy to grasp, and ensure the effect of repair quality.

Inactive Publication Date: 2021-01-29
广东最安建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of building construction, some quality defects will be caused by the quality of concrete materials or poor construction management, such as the presence of slag inclusions in weak layers, deep holes, loose concrete, etc. in cross-story columns, which will affect the bearing function of columns. There are adverse effects and there are serious safety hazards

Method used

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  • Cross-layer column quality defect repairing and reinforcing method for frame-core tube

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Build the support system: before removing the loose concrete, a pre-top ring beam with a height of 800mm and a side length of 2200mm should be built at the upper and lower ends of the damaged column. The support of the roof and the steel pipe pier is a predictive passive preventive measure for the small displacement that may be caused by the local unloading of the chiseled replacement concrete. The upper end of the lower ring beam and the lower end of the upper ring beam are both padded with 20x400x400 steel plates. Steel wedge plugged tightly;

[0026] (2) Removal of damaged concrete: There are weak slag layers and deep holes in the damaged column. The loose concrete of the damaged column between the upper and lower ring beams shall be thoroughly chiseled and cleaned by hand tapping and finely beating. The demolition height shall be 250-350mm from the upper and lower edges of the defective part, that is, the total height shall be 500-700mm (adjustable according to ...

Embodiment 2

[0031] (1) Build the support system: before removing the loose concrete, a pre-top ring beam with a height of 800mm and a side length of 2200mm should be built at the upper and lower ends of the damaged column. The support of the roof and the steel pipe pier is a predictive passive preventive measure for the small displacement that may be caused by the local unloading of the chiseled replacement concrete. The upper end of the lower ring beam and the lower end of the upper ring beam are both padded with 20x400x400 steel plates. Steel wedge plugged tightly;

[0032] (2) Removal of damaged concrete: There are shallow holes in the damaged column. Thoroughly chisel and clean the loose shallow defect area of ​​the damaged column between the upper and lower ring beams by manual tapping. The demolition height is about 50mm from the upper and lower edges of the shallow defect area (until reaching the dense concrete), and the chiseling cannot be done. If there is a large vibration to t...

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Abstract

The invention discloses a cross-layer column quality defect repairing and reinforcing method for a frame-core tube. The method comprises the following steps of constructing a supporting system, removing damaged concrete, replacing damaged concrete components in batches, removing a mold, carrying out steel adhesion treatment and the like. A pre-jacking annular horizontal ring beam is arranged at each of the upper end and the lower end of a damaged column; tool type steel pipe piers and jacks are adopted between the annular horizontal ring beams for pre-jacking and stabilizing the layer column;full-section or shallow-layer area batch replacement is conducted on a defect portion according to the defect condition of the defect portion of the column; and finally four-face steel adhesion reinforcing treatment is adopted in the range of an original concrete replacement column and at the positions of the upper ring beam and the lower ring beam, so that quality repair of the cross-layer defectcolumn is realized. The cross-layer column quality defect repairing and reinforcing method provided by the invention is high in efficiency, short in construction period, good in effect and low in cost.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a method for repairing and reinforcing the quality defect of a cross-story column of a frame core tube. Background technique [0002] The frame-core tube structure refers to the structural system composed of the frame system composed of peripheral beams and columns and the central tube. This structural form is conducive to improving the overall mechanical performance of the structure, thereby improving the seismic performance of high-rise buildings. The frame-core tube structure has become the mainstream structural form adopted in international super high-rise buildings because of its good mechanical performance and the flexibility of internal space, and has been widely used in super high-rise buildings. However, in the process of building construction, some quality defects will be caused by the quality of concrete materials or poor construction management, such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02E04H9/02
CPCE04G23/0218E04G23/0225E04H9/027
Inventor 沈最安陈玟讳左剑
Owner 广东最安建筑科技有限公司
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