Steel reinforcement polygonal steel pipe concrete column

A CFST column and polygon technology, applied in columns, pier columns, pillars, etc., can solve the problems of underutilized material strength, weak concrete restraint, complicated concrete column structure, etc., and achieve superior seismic performance and sufficient strength. Leverage and enhance the effect of collaborative work

Active Publication Date: 2009-07-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of large wall thickness of steel tubes in ordinary square, rectangular or polygonal steel tube concrete columns, difficulty in welding, large steel consumption, weak confinement effect of steel tubes on concrete, and underutilization of material strength, steel tubes with steel plate stiffeners or restraint tie rods Concrete columns are complicated in structure, large in steel consumption, and high in cost. The present invention provides a polygonal concrete-filled steel tube column reinforced with steel bars.

Method used

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  • Steel reinforcement polygonal steel pipe concrete column
  • Steel reinforcement polygonal steel pipe concrete column
  • Steel reinforcement polygonal steel pipe concrete column

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specific Embodiment approach 1

[0012] Specific implementation mode one: the following combination Image 6 , Figure 7 with Figure 8 Describe this embodiment in detail, this embodiment is made up of square, rectangular or polygonal steel pipe 1, reinforcing bar stiffener 2 and filling concrete 4, the steel pipe that fills with filling concrete 4 is square, rectangular or polygonal steel pipe 1, in square, rectangular Or the inner wall of the polygonal steel pipe 1 is welded with reinforcing ribs 2 along the axis direction of the square, rectangular or polygonal steel pipe 1 . It also includes tension reinforcement bars 3 which are arranged between reinforcement ribs 2 . The square, rectangular or polygonal steel pipe 1 of the present invention is made of Q235 steel, Q345 steel, Q390 steel or Q420 steel; the ratio of the length of the square, rectangular or polygonal steel pipe 1 to the minimum section width is ≤30. The steel stiffener 2 and the tensioned steel bar 3 can be formed by cold-bending of HPB2...

specific Embodiment approach 2

[0013] Specific implementation mode two: the following combination figure 1 with figure 2 This embodiment is specifically described. In this embodiment, a reasonable steel bar type and diameter are determined according to parameters such as square, rectangular or polygonal steel pipe cross-sectional shape, steel plate wall thickness, etc., and the steel bar stiffener 2 is used along the axis of the steel pipe 1 by using single-sided or double-sided fillet welds. Welded on the inner wall of the steel plate of the steel pipe 1, the length of the reinforcing rib 2 is equal to that of the square, rectangular or polygonal steel pipe 1, and the other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0014] Specific implementation mode three: the following combination image 3 Describe this embodiment in detail, the steel plate width of square, rectangular or polygonal steel pipe 1 of this embodiment is big, add reinforcement rib 2 on the inner side of each steel plate, to reduce the width-to-thickness ratio of steel plate, strengthen the synergy between steel pipe 1 and inner concrete 4 Work, other composition and connection relations are the same as the specific embodiment one.

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Abstract

Polygonal concrete-filled steel tube column with steel reinforcement, which relates to a concrete-filled steel tube column, in order to solve the problems of thick steel tube wall, difficult welding, large steel consumption, weak confinement effect of steel tube on concrete and insufficient material strength in ordinary polygonal concrete-filled steel tube column. However, there are problems such as complex structure, large amount of steel consumption, and high cost of concrete-filled steel tube columns with steel plate stiffeners or restrained tie rods. The invention includes polygonal steel pipes, reinforcing ribs and inner concrete. The steel pipes filled with inner concrete are polygonal steel pipes. The inner walls of the polygonal steel pipes are welded with reinforcing ribs along the axial direction of the polygonal steel pipes. The invention is a novel polygonal steel pipe concrete column with simple structure, convenient construction, low cost, high bearing capacity, good ductility, superior seismic performance, convenient construction and good economy.

Description

technical field [0001] The invention relates to a steel pipe concrete column. Background technique [0002] Square, rectangular or polygonal concrete filled steel tubes can effectively improve the ductility of concrete due to the restraint of the outsourcing steel tubes on the concrete. Compared with reinforced concrete columns, square, rectangular or polygonal concrete-filled steel tubes have the advantages of high bearing capacity, good ductility, saving formwork, and fast construction speed; compared with round concrete-filled steel tube columns, they have large section bending stiffness, simple joint structure, and are easy to decorate And other characteristics, welcomed by the majority of owners, engineering applications are increasing. However, since the cross-section of square, rectangular or polygonal steel pipes is composed of multiple straight sides, the restraint of steel pipes on the core concrete at the same cross-section is uneven, the corners are the stronges...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/30E04C3/34
Inventor 王玉银张素梅郭兰慧杨华刘界鹏
Owner HARBIN INST OF TECH
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