Prestressed recoverable steel compression bars constrained by clamp-type circular tubes

Abstract

The invention provides a steel pressing rod with restorable prestress restrained by a clamping hoop type circular tube. The steel pressing rod includes a circular pressing tube, an upper semicircle restraint tube, a lower semicircle restraint tube, clamping hoops, first stiffening lug plates, second stiffening lug plates, a pretension rod, upper sealing plates and lower sealing plates, the upper semicircle restraint tube sleeves the upper semicircle of the outer side of one section of the circular pressing tube, the lower semicircle restraint tube sleeves the lower semicircle of the circular pressing tube of the corresponding section, the upper sealing plates are respectively welded to both ends of the upper semicircle restraint tube, the lower sealing plates are respectively welded to both ends of the lower semicircle restraint tube, the symmetrical first stiffening lug plates are welded to one end of the upper semicircle restraint tube, the upper sealing plate at the other end of the upper semicircle restraint tube is welded to the corresponding end of the circular pressing tube, the two symmetrical second stiffening lug plates are welded to the other end of the lower semicircle restraint tube, the lower sealing plate at one end of the lower semicircle restraint tube is welded to the corresponding end of the circular pressing tube, both ends of two pre-pull rods are respectively anchored between the first stiffening lug plates and the second stiffening lug plates, and the multiple clamping hoops are fixed to the outer sides of the upper semicircle restraint tube and the lower semicircle restraint tube.

Description

Technical field [0001] The invention belongs to the field of civil engineering, and relates to a pre-stressed recoverable steel strut constrained by a clamp-type round tube for improving the collapse resistance performance of a grid structure. Background technique [0002] The grid structure has been recognized by the engineering community due to its reasonable stress, beautiful appearance, and high economy. It has developed rapidly in recent years. However, while the grid structure is widely used, its safety accidents also occur from time to time. Among them, due to the incomplete consideration of structural load conditions in the design stage, the rough quality of the components in the processing stage and the excessive load in the use stage, the lack of bearing capacity of the grid members leads to excessive bending deformation or damage of the members, which leads to the grid The common problem of overall collapse of the structure. [0003] The constraining member is arranged...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a clamp-type circular tube that can effectively improve the bearing capacity of the bar and control the residual deformation in view of the insufficient bearing capacity of the existing grid structure and the defects of residual deformation. Constrained prestressed recoverable steel struts

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