Polygonal concrete-filled steel tube column
By setting up a reinforced rib structure on the pipe wall and inner wall of the polygonal steel pipe, the problem of insufficient bearing capacity of square or rectangular pipes is solved, the clamping force and bearing capacity of cement are improved, and the comprehensive stress bearing capacity of the steel pipe concrete column is enhanced.
Patent Information
- Application Number
- CN201811048110.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-09-10
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2038-09-10
AI Technical Summary
The existing square or rectangular steel pipe concrete columns have insufficient bearing capacity than round pipes, mainly because their plane pipe walls do not have enough binding force on cement, resulting in a load capacity loss of about 30%.
By setting up reinforcement rib structures protruding toward the interior on the pipe wall of the polygonal steel pipe and the inner wall with reinforcement ribs, a special tightening and restraining force is formed to improve the clamping force and bearing capacity of the cement.
By increasing the binding force of the planar pipe wall of 10%-20% and the bearing capacity of 5%-20%, the comprehensive stress capacity of the steel pipe concrete column is enhanced.
Smart Images
Figure CN109057160B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a polygonal steel tube concrete column. Background Art
[0002] Steel tube concrete is a new type of construction system. It uses the restraint force formed by the outer steel tube on the cement inside when under pressure to increase the bearing capacity of the column. Its bearing capacity can be increased by about twice that of ordinary columns.
[0003] However, the shape of the steel pipe used, the square pipe or rectangular pipe, has a great disadvantage compared with the round pipe, that is, the round pipe has 100% clamping force (or restraining force) on the cement inside the pipe, while the square pipe or rectangular pipe is difficult to achieve the effect of the round pipe.
[0004] The main reason is that only the corners of the square or rectangular tube have good restraint on the cement in the tube, while the surrounding flat tube walls have little restraint on the cement. This results in a loss of about 30% of the bearing capacity of the square or rectangular tube compared to the circular tube. Summary of the invention
[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a polygonal steel tube concrete column.
[0006] To achieve the above objectives, the following technical solutions are used:
[0007] A polygonal steel tube concrete column comprises a polygonal steel tube for pouring concrete inside, wherein the tube wall surface of the polygonal steel tube is provided with a reinforcing rib structure protruding into the tube interior so as to apply a clamping restraining force to the concrete.
[0008] Preferably, the outer wall of the polygonal steel pipe is provided with a dent, the back side of the dent protrudes from the inside of the polygonal steel pipe, and a plurality of the dents are staggered or evenly arranged to form the reinforcing rib structure.
[0009] Preferably, the plurality of indentations located on the outer wall of the same polygonal steel tube are arranged in pairs relative to each other to form a circular groove structure or notch structure.
[0010] Preferably, each of the indentations is in the shape of an arc strip, and the groove structure or the notch structure is in the shape of an oblate circle or a circle or a rectangle.
[0011] Preferably, the inner wall of the polygonal steel pipe is provided with a plurality of self-deformed reinforcing ribs, both ends of each of the reinforcing ribs are fixed to the inner wall of the polygonal steel pipe, and the deformed section of the reinforcing ribs protrudes toward the inside of the polygonal steel pipe.
[0012] Preferably, the reinforcing ribs are curved in an arc shape or a wave shape.
[0013] Preferably, the reinforcing ribs are bent in a triangular or rectangular shape.
[0014] The beneficial effects of the polygonal steel tube concrete column of the present invention include:
[0015] Through special processing technology, reinforcing ribs (or tendon-shaped or plate-shaped) are set on the plane wall surface of the rectangular tube to strengthen the constraint force of the plane wall on the cement (increase by 10%-20%), thereby increasing the bearing capacity of the column (increase by 5%) and enhancing the clamping force of the plane wall on the cement in the column (increase by 10%-20%). BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the first embodiment of the polygonal steel tube concrete column of the present invention.
[0017] Figure 2 For the corresponding Figure 1 Schematic diagram of the top view structure.
[0018] Figure 3 For the corresponding Figure 1 Schematic diagram of the structure of the column when it is cut in vertical section.
[0019] Figure 4 For the corresponding Figure 3 Schematic diagram of the top view structure.
[0020] Figure 5 It is a structural schematic diagram of the second embodiment of the polygonal steel tube concrete column of the present invention.
[0021] Figure 6 For the corresponding Figure 5 Schematic diagram of the top view structure.
[0022] Figure 7 For the corresponding Figure 6 Another structural diagram of .
[0023] Figure 8 For the corresponding Figure 6 Another structural diagram of .
[0024] Fig. 9 For the corresponding Figure 6 Another structural diagram of . DETAILED DESCRIPTION
[0025] The present invention is described in detail below in conjunction with the accompanying drawings:
[0026] A polygonal steel tube concrete column comprises a polygonal steel tube 1 for pouring concrete inside, wherein the tube wall (including the surface of the inner wall or the outer wall) of the polygonal steel tube 1 is provided with a reinforcing rib structure protruding into the tube to apply a clamping constraint force to the concrete.
[0027] Preferably, the polygonal steel pipe 1 can be a rectangular steel pipe, a square steel pipe, a rhombus steel pipe, a parallelogram steel pipe, a hexagonal steel pipe, an octagonal steel pipe, or other similar polygonal steel pipes that can be conceived as substitutes in existing construction.
[0028] The following are two examples of different structural forms for the reinforcement ribs:
[0029] Embodiment 1:
[0030] like Figure 1 and Figure 2 As shown, the outer wall surface of the polygonal steel pipe 1 is provided with indentations 2 by stamping or laser etching, the back side of the indentations 2 protrudes from the interior of the polygonal steel pipe 1, and a plurality of the indentations 2 are staggered or evenly arranged with height differences to form the reinforcing rib structure.
[0031] like Figure 1 In the embodiment, the plurality of indentations 2 located on the outer wall of the same polygonal steel tube 1 are arranged in pairs to form a circular groove structure or notch structure 3. Preferably, the groove structures or notch structures 3 formed on different tube wall surfaces are staggered with height differences.
[0032] Furthermore, combined with Figure 3 and Figure 4 As shown, the edge of the tube wall of the steel tube 1 may also be provided with a half-cut indentation 2 extending toward the center of the tube wall, and the indentations 2 on different tube wall edges may also be staggered with height differences.
[0033] Preferably, there may be a gap or no gap between two adjacent indentations 2, each of the indentations 2 is in the shape of an arc strip, and the groove structure or the notch structure 3 is in the shape of an oblate or circular or rectangular.
[0034] Embodiment 2:
[0035] like Figures 5 to 9 As shown, the inner wall surface of the polygonal steel pipe 1 is provided with a plurality of reinforcing ribs 4 (rebars) which are deformed and evenly arranged, and both ends of each of the reinforcing ribs 4 are fixedly connected to the inner wall of the polygonal steel pipe 1, and the deformed section of the reinforcing rib 4 protrudes toward the interior of the polygonal steel pipe 1.
[0036] like Figure 6 and Figure 7 As shown, preferably, the reinforcing ribs 4 are curved in an arc or wave shape. Figure 8 and Fig. 9 As shown, or alternatively, the reinforcing ribs 4 are bent in a triangular or rectangular shape.
[0037] The polygonal steel tube concrete column provided by the present invention not only improves the cement bearing capacity of the rectangular tube column due to the hoop effect formed by the provided reinforcing ribs, but also improves the bonding strength between the steel tube wall and the cement, thereby improving the comprehensive stress problem of the steel tube concrete column.
[0038] The embodiments of the present invention are only used to illustrate the present invention and do not constitute a limitation on the scope of the claims. Other substantially equivalent substitutes that can be thought of by those skilled in the art are all within the protection scope of the present invention.
Claims
1. A polygonal steel tube concrete column, characterized in that: It comprises a polygonal steel pipe, in which concrete is poured, and a reinforcing rib structure protruding toward the inside of the pipe is provided on the wall of the polygonal steel pipe, thereby applying a clamping restraint force to the concrete; The outer wall of the polygonal steel pipe is provided with a dent, the back of the dent protrudes from the inside of the polygonal steel pipe, the outer wall surface of the polygonal steel pipe is provided with a dent by stamping or laser etching, and a plurality of the dents form the reinforcing rib structure. Alternatively, the inner wall of the polygonal steel tube is provided with a plurality of reinforcing ribs which are deformed by themselves and evenly arranged, and both ends of each of the reinforcing ribs are fixedly connected to the same inner wall of the polygonal steel tube, and the deformed section of the reinforcing rib protrudes toward the interior of the polygonal steel tube, and the reinforcing ribs are curved in an arc or wave shape, or the reinforcing ribs are bent in a triangle or rectangle shape, and a plurality of the reinforcing ribs form the reinforcing rib structure.
2. The polygonal steel tube concrete column according to claim 1, characterized in that: The plurality of indentations located on the outer wall of the same polygonal steel pipe are arranged in pairs relative to each other, thereby forming a groove structure or a notch structure.
3. The polygonal steel tube concrete column according to claim 2, characterized in that: Each of the indentations is in the shape of an arc strip, and the groove structure or the notch structure is in the shape of an oblong or circular shape.