Combined steel rib-embedded concrete-filled steel tube column with irregularly-shaped section

Abstract

The invention relates to a combined steel rib-embedded concrete-filled steel tube column with an irregularly-shaped section, and belongs to the technical field of design of civil engineering building components. The combined column is characterized by comprising two or three steel tubes (1) which are in fillet weld connection, wherein steel ribs (2) are arranged in each steel tube (1); concrete (3) is filled between the steel tubes (1) and the steel ribs (2) for compaction; the cross section of the combined column can be cross-shaped, T-shaped or L-shaped; the steel tubes (1) can be rectangular steel tubes or square steel tubes; the steel ribs (2) can be cross-shaped steel or transverse H-shaped steel. According to the combined column, the two or three steel tubes are in fillet weld connection, and the steel ribs are additionally arranged in the steel tubes, so that the bearing capacity of the combined column is remarkably improved; the combined column has the characteristics of simplicity in welding, accurate forming, convenience for site construction and favorability for improving the working efficiency and the construction quality.

Description

Technical field: [0001] The invention relates to a special-shaped steel tube concrete composite column with built-in steel frame, which belongs to the technical field of civil engineering building component design. Background technique: [0002] Concrete-filled steel tube columns have been widely used in practical engineering because of their superior mechanical properties and mature theoretical results. However, when concrete-filled steel tube columns are used under high pressure, the cross-sectional dimensions of the columns are often large, and the columns often protrude from the interior, which not only occupies the usable area of ​​the house, but is also not conducive to interior decoration and furniture layout. Therefore, scholars at home and abroad put forward the design conception of concrete-filled steel tube columns with special-shaped cross-sections. At present, there are three main forms of special-shaped concrete-filled steel tube columns. The first is ordinary...

AI Technical Summary

Problems solved by technology

Ordinary special-shaped concrete-filled steel tube columns have no production lines at home and abroad. In actual construction, steel plates are usually bent and welded or directly welded. The welding workload during construction is heavy, and the steel plates are difficult to position accurately, and the cross-sectional shape is difficult to control

In addition, the biggest disadvantage of ordinary special-shaped concrete-filled steel pipe columns is that the steel pipe wall has little restraint on the core concrete, and the inner corner of the steel pipe is easily deformed and damaged under the action of vertical load

In the construction of T-shaped, L-shaped, and ten-shaped concrete-filled steel tubular columns with constrained tie rods, holes must be drilled on the pipe wall, and the hole positions need to be accurately measured to realize the cross-penetration of the tie rods, which puts high demands on the construction and brings great costs. Difficulty in construction, not conducive to improving work efficiency

The manufacturing process of special-shaped concrete-filled steel tube columns with slabs is complicated, the beam-column joints are not easy to realize, and the overall bending, shearing and seismic performance needs to be further studied

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