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An octagonal circular cross-section solid steel pipe concrete member and its manufacturing method

A technology of steel pipe concrete and its production method, which is applied in the direction of pillars, pier columns, columns, etc., can solve the problem that the confinement effect of core concrete is not as good as it is, and achieve the effect of improving the bearing capacity

Active Publication Date: 2019-02-19
SHENYANG JIANZHU UNIVERSITY
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Problems solved by technology

[0003] According to a large number of experiments and practice, the confinement effect of square steel tube and octagonal steel tube on the core concrete is not as obvious as that of round steel tube, and the bearing capacity of square steel tube concrete and octagonal steel tube concrete is lower than that of circular steel tube concrete; but square steel tube Concrete and octagonal CFST and beam joints are simple in structure and easy to connect

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  • An octagonal circular cross-section solid steel pipe concrete member and its manufacturing method
  • An octagonal circular cross-section solid steel pipe concrete member and its manufacturing method
  • An octagonal circular cross-section solid steel pipe concrete member and its manufacturing method

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Embodiment Construction

[0025] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] refer to Figure 4 and Figure 5 , discloses a solid steel pipe concrete member with octagonal circular section, comprising steel pipe 1 and concrete 2, the outer edge of the cross section of the steel pipe 1 is octagonal, the inner edge is circular, and the diameter of the cross section of the concrete column 2 is 165mm, the column height is 500mm, the concrete is made of ordinary Portland cement and standard coarse and fine aggregate according to the construction mix ratio, and the strength grade is C40. In other embodiments, it may be high-performance concrete with self-compacting properties whose strength grade is not lower than C30, and the maximum particle s...

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Abstract

The invention provides an octagonal circular-section solid steel pipe concrete component. The octagonal circular-section solid steel pipe concrete component comprises a steel pipe, wherein the outer edge of the cross section of the steel pipe is octagonal; the inner edge of the cross section of the steel pipe is circular; concrete is poured into the steel pipe; the circular inner surface of the steel pipe can generate ideal constraint effect on the concrete; the octagonal outer edge is conveniently connected to construction of beam joints; under the same condition, compared with the bearing capacity of a circular steel pipe concrete component, a square steel pipe concrete component and an octagonal concrete component, the bearing capacity of the octagonal circular-section solid steel pipe concrete component is greatly improved.

Description

Technical field: [0001] The invention belongs to the technical field of engineering structures, in particular to an octagonal circular section solid steel pipe concrete member. Background technique: [0002] Concrete filled steel pipe refers to a structural member formed by filling concrete in steel pipes, and the steel pipes and their core concrete can bear external loads together. Concrete filled steel tube utilizes the interaction between the steel tube and concrete in the process of stress, that is, the confinement effect of the steel tube on its core concrete, so that the concrete is in a complex stress state, so that the strength of the concrete can be improved, and the toughness and plasticity can be improved. ; At the same time, due to the existence of concrete, the premature local buckling of the steel pipe can be delayed or avoided, thus ensuring the full play of its material properties. According to different cross-sectional forms, it can be divided into circular...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C3/34
CPCE04C3/34
Inventor 王宇李世鹏王伟任德斌王家祥张敬义杨舜博
Owner SHENYANG JIANZHU UNIVERSITY
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