Self-locking circular steel pipe concrete column joints

Abstract

The invention discloses a self-locking circular steel pipe concrete column joint, which comprises a prefabricated joint and a circular steel pipe concrete column. The prefabricated joint is an integrated joint, and the inner wall of the prefabricated joint and the outer wall of the circular steel pipe concrete column are connected in a sleeved mode; the prefabricated joint is vertically provided with a two-way conical hole, a joint conical face is arranged in the two-way conical hole, and the two-way conical hole sleeves the circular steel pipe concrete column to the appropriate height; a clamping piece assembly is arranged on the lower part of the two-way conical hole to fix the two-way conical hole; the clamping piece assembly is in a cone shape defined by three same clamping pieces andmatched with the joint conical face, and a thread is arranged on the inner side of the clamping piece assembly to increase occlusal force; and the size of the two-way conical hole corresponds to the outer side size of the cone shape defined by the three clamping pieces of the clamping piece assembly. Compared with a common circular steel pipe concrete column joint, the fabricated joint has the advantages that construction is easy and convenient, force transmission is clear, an original column is not damaged, and column interior concrete pouring is not affected.

Description

technical field [0001] The invention belongs to the field of construction engineering, and in particular relates to a self-locking circular steel pipe concrete column node. Background technique [0002] The connection between traditional round concrete-filled steel tube columns and precast concrete beams mainly includes two types: the first type is non-piercing joints represented by reinforced ring joints, ring beam joints, and steel bar surrounding joints; the second type is non-piercing joints represented by Center-through joints represented by corbel-through joints, steel bar through-type joints, and cross-plate joints. The above two types of joints represent the common practice of connecting circular CFST columns with various beams such as steel beams, reinforced concrete beams, and CFST beams. The above methods usually require a large number of welding operations on the column body, and even cause local damage to the column body ( Such as perforation, opening, etc.). ...

AI Technical Summary

Problems solved by technology

These methods not only complicate the structure, but also make it more difficult to pour concrete in the column, and there is a risk that the local failure of the column will reduce the bearing capacity

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