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Concrete-filled steel tube composite column and repairing method

A technology of concrete filled steel tube and repair method, which is applied to columns, pillars, piers and other directions, can solve the problems of environmental pollution, small earthquake magnitude, waste, etc., and achieves the effect of reducing dust pollution, improving seismic performance and simple steps.

Pending Publication Date: 2021-11-26
HUBEI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] my country is an earthquake-prone country, and there are several earthquakes every year. Most of the earthquakes have small magnitudes. A large number of demolition and reconstruction work has brought about environmental pollution and waste of time, resources, and costs.

Method used

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  • Concrete-filled steel tube composite column and repairing method
  • Concrete-filled steel tube composite column and repairing method
  • Concrete-filled steel tube composite column and repairing method

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Embodiment 1

[0032] refer to figure 1 , the present invention provides a method for repairing concrete-filled steel pipe composite columns, which can be used for repairing and strengthening after earthquakes such as figure 2 For the concrete-filled steel tube composite column shown, the method includes:

[0033] Carry out damage assessment for the concrete-filled steel tube composite column to be repaired. Only when the concrete of the plastic hinge outer layer of the concrete-filled steel tube composite column is damaged, the following operations are performed:

[0034] Step 1: If image 3 As shown, cleaning the damaged concrete on the outer layer of the plastic hinge can clearly expose the position that needs to be repaired.

[0035] Step two: Figure 4 As shown, the cleaned plastic hinge is fixed and supported, and the fixed support adopts support parts and auxiliary materials to fix and support the cleaned plastic hinge to improve the repair ability.

[0036] Step 3: Use ductile c...

Embodiment 2

[0042] refer to Figure 5 , Figure 6 , the embodiment of the present invention provides a concrete-filled steel tube composite column, the steel pipe 3 outer circumference of the steel tube concrete composite column is poured with a concrete wrapping layer except for the plastic hinge 5 of the steel tube 3-concrete composite column, and the plastic hinge 5 places Coated with ductile composite material, the composite material is seamlessly connected with the concrete wrapping layer, effectively increasing the seismic performance of the concrete-filled steel tube composite column.

[0043] Specifically, engineering cement-based composite materials can be used as composite materials. The compressive strength of engineering cement-based composite materials is roughly 30-90 MPa, the compressive strain is higher than that of ordinary concrete, and its bending resistance is also better than that of ordinary cement-based materials. It has a strong ability to control the development ...

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Abstract

The invention discloses a method for repairing a concrete-filled steel tube composite column in the technical field of structural engineering, and aims to solve the problem that outer-layer concrete at a plastic hinge of the concrete-filled steel tube composite column cracks or is stripped in advance under the action of an earthquake. The method comprises the steps that damage evaluation is conducted on the concrete-filled steel tube composite column to be repaired, and only when concrete on the outer layer of a plastic hinge of the concrete-filled steel tube composite column is damaged, the following operation is conducted: the damaged concrete on the outer layer of the plastic hinge is cleaned; the cleaned plastic hinge is fixed and supported through a formwork and square timber; and pouring a composite material with ductility at the supported plastic hinge to reinforce and repair the concrete-filled steel tube composite column. The method is suitable for the small earthquake magnitude, repairing treatment is conducted on part of the concrete filled steel tube composite column structure damaged by the earthquake, and resource and time waste and environment pollution caused by post-earthquake reconstruction with the small earthquake magnitude can be reduced.

Description

technical field [0001] The invention relates to a steel pipe concrete composite column and a repair method, belonging to the field of structural engineering. [0002] technical background [0003] my country is an earthquake-prone country, and there are several earthquakes every year. Most of the earthquakes are small in magnitude. A large number of demolition and reconstruction work has brought about environmental pollution and waste of time, resources, and costs. Contents of the invention [0004] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a concrete-filled steel tube composite column and repair method, which can improve the seismic performance of the concrete-filled steel tube composite column, and avoid the resources and time brought by reconstruction for small earthquake magnitudes in the past waste and environmental pollution. [0005] In order to achieve the above object, the present invention is achieved by ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02E04C3/34E04C3/32
CPCE04G23/0218E04G23/0225E04C3/34E04C3/32
Inventor 龚田牛秦丽李峥
Owner HUBEI UNIV OF ARTS & SCI
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