Continuous compound rectangular spiral hoop

Abstract

The invention discloses a continuous compound rectangular spiral hoop, which comprises that: a peripheral rectangular hoop with a spiral structure, a tie bar I with a snake structure and a tie bar II with a snake structure are continuously wound; the distance between longitudinally adjacent corners on two sides of the tie bar I and the tie bar II is equal to a screw pitch of the peripheral rectangular hoop; the tie bar I and the tie bar II are respectively arranged in the peripheral rectangular hoop, are vertical to each other; and the corners on the two sides are respectively fixed on the outside of a straight-line segment of the peripheral rectangular hoop. The tie bar I with the snake structure and the tie bar II with the snake structure replace tie bars with a rectangular structure inthe prior art so as to simplify the structure of the tie bars and reduce material consumption; and in the mounting process, the tie bar I and the tie bar II are respectively sleeved onto the straight-line segment of the peripheral rectangular hoop from the outside of the peripheral rectangular hoop, so the mounting method is simplified, the high-efficiency and mass production is easy, the processing cycle is shortened, and the construction cost is reduced.

Description

technical field [0001] The invention relates to a stirrup structure suitable for fixing the position of the main reinforcement of a concrete beam or column, in particular to a continuous composite rectangular spiral stirrup. Background technique [0002] Composite spiral stirrups are composed of spiral stirrups and tie bars. Under the action of axial pressure, the continuous composite rectangular spiral stirrup column, the expansion deformation of the core concrete makes the straight section of the stirrup produce horizontal bending. Because the bending stiffness of the straight section of the stirrup is very small, the reaction force of the straight section to the core concrete is also very small. On the other hand, the corners of the stirrups have high rigidity and small deformation, and the combination of tensile forces in two vertical directions produces strong constraints on the diagonal direction of the core concrete. Therefore, what the core concrete bears is the co...

AI Technical Summary

Problems solved by technology

The stirrups of this structure can be coiled according to certain rules in theory, which overcomes the shortcomings of the previous continuous composite rectangular spiral stirrups with inconsistent shapes and specifications and high labor costs.

However, due to the complex structure, the more the tie ribs are arranged at a certain distance in the section, the more complex the structure is. Making a set of winding equipment is not only complicated in structure, difficult to manufacture, but also expensive, and even impossible to achieve. It cannot be used in the industry. Large-scale production is formed above; the cross-sections of the horizontal tie bars and the longitudinal tie bars are rectangular structures. When the horizontal tie bars and the longitudinal tie bars are installed on the peripheral stirrups, the two ends of the horizontal tie bars and the longitudinal tie bars overlap with the peripheral stirrups. part, so that the whole structure not only consumes a lot of materials, but also increases in weight, and the cost of construction also increases accordingly

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