Steel-encased reinforcing column pre-tension device

Abstract

The invention discloses a steel-encased reinforcing column pre-tension device, and belongs to pre-tension devices. The steel-encased reinforcing column pre-tension device structurally comprises steel angles arranged in the four corners of a reinforced concrete vertical column, a hoop plate is anchored between every two steel angles, and a support is formed by the steel angles and the hoop plates jointly. The support comprises an upper support body and a lower support body. The upper support body and the lower support body are connected through four climbing mechanisms, each climbing mechanism comprises an upper connecting piece, a lower connecting piece and a jack, and the upper connecting pieces and the lower connecting pieces are connected with the upper support body and the lower support body through insertion mechanisms. The steel-encased reinforcing column pre-tension device has the advantages that partial loads are shared before secondary loading, the stress level and the strain level of an original concrete structure are reduced, unloading and reinforcement are conducted synchronously, a new part and an old part which are obtained after reinforcement is conducted can jointly work under secondary loading, and therefore deformation is synchronized; prestress application is easy and convenient, and control is easy; supporting rods can effectively take part in loading by applying prestress, partial loads of the column are shared, and the reinforcement effect is achieved.

Description

technical field [0001] The invention relates to a pre-stressing device, in particular to a pre-stressing device for an outsourcing steel reinforcement column. Background technique [0002] Reinforced concrete structure is the most widely used structure in engineering construction all over the world, and its development and application has a history of more than 100 years. However, during the use of concrete structures, concrete members will continue to be damaged and aged over time, and their bearing capacity, stiffness, ductility and stability will continue to decline, so the branch of concrete structure reinforcement emerged in the 1960s. [0003] At present, there are many reinforcement methods commonly used in actual engineering, such as enlarging section method, replacement method, prestressing method, increasing fulcrum method, outsourcing steel reinforcement method, bonded steel reinforcement and viscose fiber cloth method, etc. [0004] Among them, in the prestressi...

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Problems solved by technology

[0004] Among them, in the prestressing method reinforcement, there is a prestressed strut reinforcement method. During reinforcement, the angle steel struts set up and down inclined are fastened through tool-type tensioning screws, so that the angle steel struts are pressed toward the column direction, and the angle steel struts are tightened. The two ends of the rod move upwards to apply prestress and strengthen the column, but the prestress is difficult to control, and it is not known how much prestress is applied, which limits the application of the prestress method to strengthen concrete compression members

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