Local reinforcing method of circular reinforced concrete column

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,...

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 reinforcement method prevents the outsourcing steel and the original components from working as a whole, and they can only bear the force independently. The performance utilization rate of the outsourcing steel is low and the integrity is poor.

Images