CN216766529U

CN216766529U - Take screw-thread steel core concrete column of stiffening rib

Info

Publication number: CN216766529U
Application number: CN202123176748.1U
Authority: CN
Inventors: 黄瑾斓; 郑立杭
Original assignee: CSCEC Strait Construction and Development Co Ltd
Current assignee: CSCEC Strait Construction and Development Co Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-06-17
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses a threaded steel tube concrete column with stiffening ribs, which comprises a steel tube, a plurality of support assemblies arranged along the inner wall of the steel tube and concrete filled in the inner cavity of the steel tube; internal threads are distributed on the inner wall of the steel pipe; the support assemblies are divided into two rows by taking the diameter of the steel pipe as a limit and fixed on the inner wall of the steel pipe, each row of support assemblies comprises a plurality of stiffening ribs which are sequentially fixed from top to bottom, and the stiffening ribs are in sealing joint with the internal threads of the inner wall of the steel pipe; the steel pipe concrete column provided by the utility model has the advantages of high rigidity, good ductility, strong stability, simple beam-column joint and easiness in design and construction.

Description

Take screw-thread steel core concrete column of stiffening rib

Technical Field

The utility model belongs to the technical field of building structures, and particularly relates to a threaded steel pipe concrete column with stiffening ribs.

Background

In traditional steel structure building, because steel column cross sectional area is far less than the concrete column, the calculation of stability just becomes the serious thing in order to steel structure building, and the problem that the unstability will often be considered to the steel column is more than the bearing capacity, and this just makes the steel construction just receive more restrictions when the design, though through the application of steel, makes the cross-section of component reduce greatly, but in order to guarantee stability, need increase more constructional measures, this process that has just caused the construction is more loaded down with trivial details.

At present, concrete is injected into a steel pipe to form a steel pipe concrete composite structure, the steel pipe replaces the hoop effect of a stirrup, when the steel pipe concrete column is subjected to axial pressure, the concrete in the steel pipe is in a three-dimensional compression state, the compression strength of the concrete is improved due to the three-dimensional compression, the material performance of the concrete is fully utilized, the concrete in the core restrains the buckling deformation of an external steel pipe to a certain extent, and the stability of the column is also obviously improved; when the steel pipe and the concrete work together, the steel pipe and the concrete fully exert the performance of improving the three-dimensional compressive strength of the concrete, the concrete and the steel pipe fully exert the bearing capacity of the steel pipe, the reinforcement rate in the concrete can be greatly reduced, and the steel pipe concrete column is larger than the numerical value superposition of the bearing capacity of a single steel pipe column and a concrete column regardless of the ductility or the bearing capacity. However, the existing steel pipe concrete column is often affected by the poured concrete during construction, which results in instability of the final column and debonding between the concrete and the steel pipe.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides the threaded steel tube concrete column with the stiffening ribs, which has the advantages of higher stability, large bonding force between a steel tube and concrete, and convenience in construction and installation.

The utility model provides the following technical scheme:

a threaded steel tube concrete column with stiffening ribs comprises a steel tube, a plurality of support assemblies arranged along the inner wall of the steel tube and concrete filled in the inner cavity of the steel tube; internal threads are distributed on the inner wall of the steel pipe; the support assemblies are divided into two rows by taking the diameter of the steel pipe as a limit and fixed on the inner wall of the steel pipe, each row of support assemblies comprises a plurality of stiffening ribs which are sequentially fixed from top to bottom, and the stiffening ribs are in sealing joint with the internal threads of the inner wall of the steel pipe.

Furthermore, the stiffening rib is of a crescent structure and comprises an arc-shaped stiffening rib flange plate and an external thread plate arranged on the outer side wall of the stiffening rib flange plate; the inner side wall of the stiffening rib flange plate is fixedly provided with a crescent-shaped transverse plate vertical to the stiffening rib flange plate; the external thread plate is in sealing engagement with the internal thread of the inner wall of the steel pipe.

Furthermore, at least one reserved hole is formed in the transverse plate.

Furthermore, two rows of support assemblies are not strictly symmetrical, the stiffening ribs adjacent to the left and the right are not strictly symmetrical, and the spacing between the upper stiffening rib and the lower stiffening rib in the support assembly in the same row is 400 mm.

Further, the internal thread of the inner wall of the steel pipe is a 55-degree sealed conical pipe internal thread; the external thread plate is a 55-degree sealing conical pipe external thread.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the threaded concrete-filled steel tube column with the stiffening ribs, the adjustable stiffening ribs are added between the steel tube and the concrete, so that the calculated length of the concrete-filled steel tube column is reduced, the critical force of the concrete-filled steel tube column is improved, the stability of the concrete-filled steel tube column is enhanced, and meanwhile, the stiffness of the concrete-filled steel tube column is improved by the stiffening ribs;

2. the stiffening ribs are in a crescent moon-shaped structure, and after the stiffening ribs are installed in place, a passage is formed among the stiffening ribs from top to bottom of the same row of support components, so that the concrete pouring is facilitated; meanwhile, the reserved holes in the crescent-shaped rib plates can enable the concrete and the steel pipe to be more closely attached together after the concrete is poured, the cooperative work capacity of the concrete and the steel pipe is enhanced, the steel pipe is simple in structure, and the crescent-shaped stiffening ribs can be directly installed in a factory or installed on a construction site.

3. The inner wall of the steel tube forms an internal thread, when the steel tube concrete column is loaded at the upper part, the core concrete bears the pressure effect, if the steel tube is not restrained, the concrete can be crushed at a certain part of the column body and can bulge outwards, the internal thread well disperses the outwards bulging force of the concrete when being pressed, and the contact area between the steel tube and the concrete is increased due to the crack, so that the debonding force between the concrete and the steel tube is increased, the use of the steel tube concrete column is safer due to the larger debonding force, and the concrete and the steel tube can work better in coordination; when the load reaches a larger value, the concrete and the steel pipe are debonded, the concrete is crushed and exits from working, only the steel pipe is in a working state, the debonding force of the concrete and the steel pipe can be reduced by the cracks on the contact section of the concrete and the steel pipe, and the development of the cracks can be effectively inhibited by the steel pipe and the threads on the steel pipe when the concrete cracks.

Drawings

FIG. 1 shows a concrete filled steel tubular column according to the present invention.

FIG. 2 shows a steel pipe with internal threads according to the present invention.

FIG. 3 illustrates a crescent shaped stiffener according to the present invention;

the labels in the figures are denoted as:

1. a steel pipe; 2. concrete; 3. an internal thread; 4. a stiffening rib; 5. reserving holes; 6. a stiffener flange plate; 7. an external thread plate; 8. a transverse plate.

Detailed description of the preferred embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, a threaded steel tube concrete column with stiffening ribs comprises a steel tube 1, a plurality of support assemblies arranged along the inner wall of the steel tube 1 and concrete 2 filled in the inner cavity of the steel tube; the inner wall of the steel pipe 1 is fully distributed with internal threads 3; the supporting assemblies are divided into two rows by taking the diameter of the steel pipe 1 as a limit and fixed on the inner wall of the steel pipe 1, each row of supporting assemblies comprises a plurality of stiffening ribs 4 which are sequentially fixed from top to bottom, the stiffening ribs 4 are in sealing joint with the internal threads 3 of the inner wall of the steel pipe 1, the force of outward bulging of concrete when the concrete is pressed can be well dispersed by matching between the threads, the debonding force of the concrete 2 and the steel pipe 1 is increased, and the stiffening ribs 4 are used for improving the rigidity and stability of the steel pipe concrete column;

in the utility model, the stiffening rib 4 is of a crescent moon-shaped structure and comprises an arc stiffening rib flange plate 6 and an external thread plate 7 arranged on the outer side wall of the stiffening rib flange plate 6; a crescent-shaped transverse plate 8 vertical to the stiffening rib flange plate 6 is fixed on the inner side wall of the stiffening rib flange plate 6; the external thread plate 7 is in sealing joint with the internal thread 3 on the inner wall of the steel pipe; at least one reserved hole 5 has been seted up on diaphragm 8, and reserved hole 5 can make concrete 3 and steel pipe 1 inseparabler get the laminating together after concrete 3 pours the completion, has strengthened concrete 3 and steel pipe 1 collaborative work's ability, simultaneously, when stiffening rib 4 and steel pipe 1 install, utilizes long reinforcing bar to insert reserved hole 5, drives the stiffening rib rotation through wrench movement long reinforcing bar to adjust the position of stiffening rib.

Further, two rows of support assemblies provided in the steel pipe 1 are not strictly symmetrical and the stiffening ribs 4 adjacent to each other on the left and right sides in the two rows of support assemblies are not strictly symmetrical, and the stiffening ribs 4 adjacent to each other on the upper and lower sides in the support assembly on the same row are spaced by 400 mm.

Further, the internal thread 3 of the inner wall of the steel pipe 1 is a 55-degree sealed conical pipe internal thread; the external thread plate 7 is a 55-degree sealed conical pipe external thread.

The working principle of the utility model is as follows:

the utility model will be further described with reference to the accompanying drawings.

The steel pipe concrete column can be used for installing the stiffening ribs 4 and the steel pipes 1 during factory processing, or installing the stiffening ribs 4 and the steel pipes 1 on a construction site, wherein the stiffening rib flange plates 6 are matched and connected with the internal threads of the steel pipes 1, one stiffening rib 4 is arranged in the steel pipes 1 at intervals of 400mm from top to bottom, and two rows of stiffening ribs 4 are formed as supporting components by taking the diameter of the steel pipes 1 as a limit, the stiffening ribs 4 can be inserted into the reserved holes 5 during installation, the stiffening ribs 4 are driven to rotate by twisting the long steel bars, so that the positions of the stiffening ribs 4 are adjusted, after all the stiffening ribs 4 are installed in place, column feet are fixed, and self-compacting concrete is poured, so that the installation is completed.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a take screw-thread steel core concrete column of stiffening rib which characterized in that: comprises a steel pipe (1), a plurality of supporting components arranged along the inner wall of the steel pipe (1) and concrete (2) filled in the inner cavity of the steel pipe (1); the inner wall of the steel pipe (1) is fully distributed with internal threads (3); the supporting components are divided into two rows by taking the diameter of the steel pipe (1) as the limit and fixed on the inner wall of the steel pipe (1), each row of supporting components comprises a plurality of stiffening ribs (4) which are sequentially fixed from top to bottom, and the stiffening ribs (4) are in sealing joint with the internal threads (3) of the inner wall of the steel pipe (1).

2. A ribbed threaded concrete-filled steel tubular column according to claim 1, characterized in that: the stiffening rib (4) is of a crescent structure and comprises an arc stiffening rib flange plate (6) and an external thread plate (7) arranged on the outer side wall of the stiffening rib flange plate (6); the inner side wall of the stiffening rib flange plate (6) is fixedly provided with a crescent transverse plate (8) vertical to the stiffening rib flange plate (6), and the external thread plate (7) is in sealing joint with the internal thread (3) of the inner wall of the steel pipe (1).

3. A ribbed threaded concrete-filled steel tubular column according to claim 2, characterized in that: at least one reserved hole (5) is formed in the transverse plate (8).

4. A ribbed threaded concrete-filled steel tubular column according to claim 3, wherein: two rows of supporting components are not strictly symmetrical, two stiffening ribs (4) adjacent to the left and the right are not strictly symmetrical, and the interval between the stiffening ribs (4) adjacent to the upper and the lower in the supporting components in the same row is 400 mm.

5. A ribbed threaded concrete-filled steel tubular column according to claim 4, wherein: the internal thread (3) of the inner wall of the steel pipe (1) is a 55-degree sealed conical pipe internal thread; the external thread plate (7) is a 55-degree sealed conical pipe external thread.