Local reinforcing method of circular reinforced concrete column

A reinforced concrete column and local reinforcement technology, which is applied in construction, building maintenance, building construction, etc., can solve the problems of poor co-workability of new and old concrete, low performance utilization rate of outsourced steel, and small improvement in structural plasticity. The effect of reducing the waste of natural and social resources, high reinforcement reliability, and reducing the cross-sectional area

Inactive Publication Date: 2016-03-30
WUHAN UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

The method of enlarging the cross-section makes the co-workability of the new and old concrete poor, the co-deformation performance is poor, and the improvement of the structural plasticity is small
The outsourcing steel reinforcemen

Method used

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  • Local reinforcing method of circular reinforced concrete column
  • Local reinforcing method of circular reinforced concrete column

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Embodiment Construction

[0025] The present invention is described by way of example in conjunction with the accompanying drawings,

[0026] The invention provides. A local reinforcement method for a circular reinforced concrete column, comprising the following steps:

[0027] a. Install symmetrical reinforcement 2 at the place where the original reinforced concrete column 1 needs to be reinforced;

[0028] b. A jacket thin-walled steel pipe 4 is arranged on the periphery of the reinforced concrete column 1, and the jacket thin-walled steel pipe 4 wraps the reinforced concrete column 1 and the planting bar 2;

[0029] c Wrap FRP cloth 5 outside the thin-walled steel pipe 4 of the jacket, and after the adhesive of the FRP cloth 5 is cured, pour self-compacting new concrete or inorganic grouting material mixed with steel fibers between the thin-walled steel pipe 4 and the reinforced concrete column 1 .

[0030] The outer thin-walled steel pipe 4 coincides with the geometric center of the reinforced con...

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Abstract

The invention discloses a local reinforcing method of a circular reinforced concrete column. The method mainly includes the steps that symmetrical embedded steel bars are arranged at the positions, needing to be reinforced, of an existing reinforced concrete column, an outer sleeve thin-walled steel pipe 3-10 mm thick is arranged on the periphery of the reinforced concrete column, the outer sleeve thin-walled steel pipe is a sleeve formed by conducting on-site butt welding on two semicircular rolled steel sheets, FRP cloth is wound outside the outer sleeve thin-walled steel pipe, and after adhesives of the FRP cloth are cured, self-compact concrete is poured in the space between the outer sleeve thin-walled steel pipe and the reinforced concrete column. By means of the method, compared with a newly-built project, the circular reinforced concrete column reinforced through the method has the advantages that waste of natural resources and social resources can be reduced, the bearing capacity and anti-seismic performance can be improved, the service life of the column is prolonged, the construction period is short, expenses are low, and the column is suitable for local reinforcing and the like of high-rise and super-high-rise buildings, large-span bridge piers and large industrial factories.

Description

technical field [0001] The invention relates to a reinforcement method, in particular to a local reinforcement method of a circular reinforced concrete column. Background technique [0002] In addition to the advantages of high strength and small deformation of high-performance concrete, high-performance concrete-filled steel tube columns also have the advantages of good ductility, good energy consumption, and good impact and earthquake resistance. It is widely used in structures such as buildings, long-span bridges, and large industrial plants. It is convenient for construction, shortens the construction period, reduces the cost, and achieves good economic results. However, due to the addition and reconstruction of some buildings, the original structural system can no longer meet the bearing capacity requirements; in addition, some buildings under construction or already built have some defects due to design or construction reasons; in addition, due to earthquakes, fires,...

Claims

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Application Information

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IPC IPC(8): E04G23/02
CPCE04G23/0225
Inventor 卢亦焱祝涛李杉李伟捷李娜梁鸿骏
Owner WUHAN UNIV
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