Prestressed recoverable steel struts constrained by snap-in square tubes

Abstract

The invention discloses a pre-stress recoverable steel pressing rod adopting clamping buckle type square tube restriction. The pre-stress recoverable steel pressing rod comprises a circular pressing tube, an upper groove-shaped restriction tube, a lower groove-shaped restriction tube, sliding slots, first stiffening lug plates, second stiffening lug plates, pre-tensioning rods, upper opening sealing plates, lower opening sealing plates and clamping buckles, wherein the upper groove-shaped restriction tube is mounted on the upper half circle of the outer side of one section of the circular pressing tube in a sleeving manner; the lower groove-shaped restriction tube is mounted on the lower half circle of the corresponding section of the circular pressing tube in a sleeving manner; the sliding slots which are protruded outwards are separately arranged on a connection part of the upper groove-shaped restriction tube and the lower groove-shaped restriction tube; the two clamping buckles are separately mounted on the two corresponding sliding slots; and the upper opening sealing plates are welded at the two ends of the upper groove-shaped restriction tube while the lower opening sealing plates are separately welded at the two ends of the lower groove-shaped restriction tube; the two symmetrical first stiffening lug plates are welded at one end of the upper groove-shaped restriction tube; the two symmetrical second stiffening lug plates are welded at the other end of the lower groove-shaped restriction tube; and the two ends of the two pre-tensioning rods are separately anchored between the corresponding first stiffening lug plate and the corresponding second stiffening lug plate.

Description

technical field [0001] The invention belongs to the field of civil engineering, and relates to a prestressed recoverable steel pressure rod constrained by buckle-type square tubes for improving the anti-collapse performance of grid structures. Background technique [0002] The grid structure has been recognized by the engineering community due to its reasonable force, beautiful appearance and high economy, and 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, the insufficient consideration of the 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 caused insufficient bearing capacity of the grid members, which in turn caused excessive bending deformation or damage of the rods, which led to the failure of the grid structure. A common problem with structural collapse. [0003] Se...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the invention of this application is to provide a buckle-type square tube that can effectively increase 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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