Beam-column node of double-round steel pipe concrete column and construction method

Abstract

The invention relates to a beam-column node of a double-round steel pipe concrete column and a construction method. The beam-column node consists of an inner steel pipe, an outer steel pipe, a connecting beam section, an inner connecting part, high-strength bolts and concrete, wherein the axis of the inner steel pipe is coincided with the axis of the outer steel pipe, and the upper end of the inner steel pipe extends for 500mm out of the upper end of the outer steel pipe; the connecting beam section is welded on the outer steel pipe, and a flange plate of the connecting beam section is positioned between the two high-strength bolts; the inner connecting part is positioned between the inner steel pipe and the outer steel pipe, is sheathed on the inner steel pipe, and is fixedly arranged on the outer steel pipe by the high-strength bolts; the concrete is put into the inner steel pipe and the outer steel pipe. In the construction process of the beam-column node, the inner connecting part is fixedly arranged on the outer steel pipe by the high-strength bolts, then the outer sleeve pipe is sheathed onto the inner steel pipe, the inner steel pipe penetrates through an inner ring steel pipe of the inner connecting part, and finally the concrete is cast. The beam-column node has the advantages that the number of welding seams is fewer, the construction is quick, the stress property is good, and the like.

Description

technical field [0001] The invention relates to the technical field of beam-column joints for connecting double-circular steel pipe concrete columns and steel beams. Background technique [0002] The double-round concrete-filled steel tube column has the advantages of high bearing capacity, good plasticity and toughness, and good fire resistance. However, the double-circular concrete-filled steel tube column contains two layers of circular steel tubes, the construction space is small, and the handling of beam-column joints is more difficult. At present, the existing beam-column joints have the disadvantages of slow construction speed, many welds, and large welding residual stress. Therefore, a beam-column joint of double-circular steel pipe concrete columns and corresponding construction methods are needed to achieve good mechanical performance of beam-column joints. , Construction convenience and other goals. Contents of the invention [0003] In order to overcome the p...

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Problems solved by technology

[0003] In order to overcome the problems of the beam-column joint of the double-circular concrete-filled steel pipe column with many welds, large welding residual stress, and slow construction speed, the invention discloses a beam-column joint and construction method of the double-circular concrete-filled steel tube column. The beam-column joint has a structural Simple, fast construction, good mechanical performance, etc., this construction method can solve the construction problem of beam-column joints under the condition of small construction space

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