Strip helical reinforcing column

Abstract

The utility model discloses a strip spiral type reinforcing column relates to concrete column structure reinforcing technical field, and the main purpose is to optimize the installation form of strip, improves the structural strength of strip wrapping concrete column. The main technical scheme of the utility model discloses a strip spiral type reinforcing column, it includes: column and strip, the axial lateral surface of column is opened with the groove of spiral ascent, the strip is buried in the groove through the covering layer, and the opposite side of strip is equipped with a plurality of convex parts respectively.

Description

Technical Field

[0001] This utility model relates to the field of concrete column structure reinforcement technology, and in particular to a strip spiral reinforcement column. Background Technology

[0002] Currently, the most common application of FRP materials in civil engineering structures is to attach FRP fabric to the surface of concrete structures using epoxy resin adhesive. The FRP-encased concrete reinforcement technology can enhance the axial compressive strength and ductility of concrete by restricting the lateral expansion of concrete under triaxial compression, thereby effectively improving the load-bearing capacity and seismic performance of concrete columns.

[0003] A renowned scholar proposed using narrow FRP strips spirally wrapped around concrete columns to reduce the bond voids between the FRP and the matrix, thereby improving the structural integrity and safety. This novel reinforcement method involves horizontally wrapping concrete columns with FRP strips in a circumferential manner. The study compared the axial compressive properties of concrete under different FRP constraint methods (full wrapping, partial wrapping, and non-uniformly distributed partial wrapping). Experimental research showed that, using the same amount of FRP material, the circumferentially wrapped concrete columns exhibited higher compressive strength and ultimate strain than fully wrapped concrete columns, indicating that under the same conditions, circumferentially wrapped concrete has a higher constraint efficiency.

[0004] However, the strip installation method for FRP partially confined concrete columns needs further optimization to improve the structural strength of the strip-wrapped concrete columns. Utility Model Content

[0005] In view of this, the present invention provides a strip spiral reinforcement column, the main purpose of which is to optimize the installation form of the strip and improve the structural strength of the concrete column wrapped by the strip.

[0006] To achieve the above objectives, this utility model mainly provides the following technical solutions:

[0007] This utility model provides a strip spiral reinforcement column, which includes: a column body and strips;

[0008] The axial surface of the column has spirally rising grooves.

[0009] The strip is embedded in the trench through a cover layer, and multiple protruding components are provided on the opposite sides of the strip.

[0010] The purpose of this utility model and the technical problems to be solved can be further achieved by the following technical measures.

[0011] Optionally, the protruding component is triangular.

[0012] Optionally, the protruding component is rectangular.

[0013] Optionally, the strip includes a first strip and a second strip, and the groove includes a first groove and a second groove. The first groove and the second groove are arranged in a cross spiral on the axial side surface of the column. The first strip is embedded in the first groove, and the second strip is embedded in the second groove.

[0014] Optionally, it may also include multiple force-applying plates, with the first strip and the second strip forming multiple intersections, and each force-applying plate correspondingly pressing against one of the intersections.

[0015] Optionally, both ends of the force-applying plate are respectively bolted to the axial side surface of the column, so as to press the force-applying plate against the intersection.

[0016] Optionally, it also includes an internally threaded tube, wherein the column body is provided with a steel reinforcement cage, one end of the internally threaded tube is fixedly connected to the steel reinforcement cage, and the other end of the internally threaded tube is located on the axial side surface of the column body for threaded connection of the bolt.

[0017] By employing the above technical solution, this utility model has at least the following advantages:

[0018] After the strip is embedded in the trench, multiple protruding components are embedded in the column, which increases the firmness of the contact between the strip and the column body. The strip is less likely to slide relative to the trench, and the strip can provide greater circumferential restraint force to the concrete column, thereby improving the structural strength of the concrete column wrapped by the strip. Attached Figure Description

[0019] Figure 1 A perspective view of a strip-type spiral reinforcement column provided for an embodiment of this utility model;

[0020] Figure 2 A side view of a strip-type spiral reinforced column provided as a first perspective of an embodiment of this utility model;

[0021] Figure 3 A second-perspective side view of a strip-spiral reinforced column provided for an embodiment of this utility model;

[0022] Figure 4 A partial perspective view of a strip-spiral reinforced column provided for an embodiment of this utility model;

[0023] Figure 5 for Figure 1 The first enlarged view of section A;

[0024] Figure 6 for Figure 1 The second enlarged view of part A.

[0025] The reference numerals in the accompanying drawings include: column 1, groove 2, strip 3, protruding part 4, first strip 301, second strip 302, force plate 5, bolt 6, internal threaded pipe 7, and steel reinforcement cage 8. Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this utility model application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 3 As shown, an embodiment of the present invention provides a strip spiral reinforcement column, which includes: a column body 1 and strips 3;

[0029] The axial surface of the column 1 has a spirally rising groove 2.

[0030] The strip 3 is embedded in the trench 2 through a covering layer, and multiple protruding parts 4 are provided on the opposite sides of the strip 3.

[0031] The working process of the strip spiral reinforcement column is as follows:

[0032] After the strip 3 is embedded in the trench 2, multiple protruding parts 4 are respectively embedded in the column 1, which increases the firmness of the solid contact between the strip 3 and the column 1. The strip 3 is not easy to slide relative to the trench 2. The strip 3 can provide greater circumferential restraint force to the concrete column and improve the structural strength of the concrete column wrapped by the strip 3.

[0033] Specifically, the covering layer is a concrete mortar layer.

[0034] Specifically, strip 3 is made of FRP strip 3 or stainless steel strip material, and strip 3 and multiple protruding parts 4 are integrally formed.

[0035] Specifically, the spiral rise angle of groove 2 is 45°, thus the spiral rise angle of constraint strip 3 is also 45°.

[0036] like Figure 1 and Figure 5 As shown, in a specific embodiment, the protruding component 4 is triangular.

[0037] In this embodiment, specifically, one side of the triangle of the protruding component 4 is fixedly connected to the side of the strip 3. When the concrete column is compressed and there is a tendency for the strip 3 to slide relative to the trench 2, the other side of the triangle of each protruding component 4 is resisted by the concrete, thereby preventing the occurrence of this tendency. For the protruding component 4 of the strip 3 of the same thickness, the force-bearing area of ​​the other side of the triangle is relatively large, the resistance is greater, and the strip 3 is less likely to slip relative to the trench 2.

[0038] like Figure 1 and Figure 6 As shown, in a specific embodiment, the protruding component 4 is rectangular.

[0039] In this embodiment, specifically, one rectangular side of the protruding component 4 is fixedly connected to the side of the strip 3. When the concrete column is compressed and there is a tendency for the strip 3 to slide relative to the trench 2, the extension direction of the other rectangular side of each protruding component 4 (one end of which is close to the strip 3) is perpendicular to the sliding direction of the strip 3. For the same thickness of the protruding component 4 of the strip 3, the force-bearing surface of the other rectangular side is perpendicular to the sliding direction of the strip 3. All the resistance of the concrete is applied perpendicularly to the force-bearing surface of this side, making it less likely for the strip 3 to slip relative to the trench 2.

[0040] like Figures 1 to 3 As shown, in a specific embodiment, the strip 3 includes a first strip 301 and a second strip 302, and the groove 2 includes a first groove 2 and a second groove 2. The first groove 2 and the second groove 2 are arranged in a cross spiral on the axial side surface of the column 1. The first strip 301 is embedded in the first groove 2, and the second strip 302 is embedded in the second groove 2.

[0041] In this embodiment, specifically, the first strip 301 extends along the first groove 2, and the second strip 302 extends along the second groove 2, and is spirally wound around the axial surface of the column 1. When the column 1 is subjected to pressure from top to bottom, the first strip 301 and the second strip 302 work together to constrain the compressive strength of the concrete column 1.

[0042] In a specific embodiment, it also includes multiple force-applying plates 5, with the first strip 301 and the second strip 302 forming multiple intersections, and each force-applying plate 5 correspondingly pressing against one of the intersections.

[0043] In this embodiment, specifically, the force plate 5 presses the overlapping portion of the first strip 301 and the second strip 302 at the intersection point, increasing the stability of the first strip 301 and the second strip 302 on the surface of the column 1.

[0044] like Figures 1 to 4As shown, in a specific embodiment, the two ends of the force-applying plate 5 are respectively connected to the axial side surface of the column 1 by bolts 6, so as to press the force-applying plate 5 against the intersection.

[0045] In this embodiment, specifically, the two ends of the force-applying plate 5 are provided with through holes, and the bolts 6 pass through the through holes and are screwed onto the axial surface of the column 1. By controlling the degree of tightening of the bolts 6, the degree to which the force-applying plate 5 presses against the intersection of the first strip 301 and the second strip 302 is adjusted.

[0046] like Figure 4 As shown, in a specific embodiment, it also includes an internally threaded pipe 7. The column 1 is provided with a steel reinforcement cage 8. One end of the internally threaded pipe 7 is fixedly connected to the steel reinforcement cage 8, and the other end of the internally threaded pipe 7 is located on the axial side surface of the column 1 for threaded connection of the bolt 6.

[0047] In this embodiment, specifically, before pouring the concrete column 1, one end of the internally threaded pipe 7 is sealed and welded to the reinforcing steel cage 8, and the other end of the internally threaded pipe 7 points to the outer periphery of the reinforcing steel cage 8. The other end of the internally threaded pipe 7 is threaded to a hexagonal bolt 6. Then, the reinforcing steel cage 8 is placed in the pouring mold for concrete pouring. In this way, concrete will not enter the internally threaded pipe 7. After the concrete column 1 has cured, the first groove 2 and the second groove 2 are chiseled on the axial surface of the column 1, so that multiple internally threaded pipes 7 are distributed on both sides of the groove 2. The hexagonal bolts 6 at the other end of the internally threaded pipe 7 are located on the surface of the column 1 on both sides of the groove 2. At this time, the hexagonal bolts 6 are removed, and then the first strip 301 is removed. The first strip 301 and the second strip 302 are placed in the trench 2 and tensioned. Then, the middle part of the force-applying plate 5 is pressed against the overlapping area of ​​the first strip 301 and the second strip 302 at the intersection point. The through holes at both ends of the force-applying plate 5 are respectively aligned with the other ends of the internal threaded pipe 7. Hex bolts 6 are then installed to fix the relative positions of the force-applying plate 5 and the strip 3. After completing the above operations, concrete mortar is covered in the trench 2. After the concrete mortar has cured, the gap between the adjacent protruding parts 4 on the side of the strip 3 is occupied by the concrete mortar, thereby forming a structure in which multiple protruding parts 4 on the side of the strip 3 and the concrete mortar interlock, further preventing the tensioned strip 3 from rebounding in the trench 2, thus completing the construction of the reinforced column.

[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A strip-type spiral reinforced column, characterized in that, include: A column, wherein the axial surface of the column has a spirally rising groove; A strip, which is embedded in the trench through a cover layer, and a plurality of protruding parts are provided on the opposite sides of the strip.

2. The strip-type spiral reinforced column according to claim 1, characterized in that, The protruding component is triangular.

3. The strip-type spiral reinforced column according to claim 1, characterized in that, The protruding component is rectangular.

4. The strip-type spiral reinforced column according to any one of claims 1 to 3, characterized in that, The strip includes a first strip and a second strip, and the groove includes a first groove and a second groove. The first groove and the second groove are arranged in a cross spiral on the axial side surface of the column. The first strip is embedded in the first groove, and the second strip is embedded in the second groove.

5. The strip spiral reinforced column according to claim 4, characterized in that, It also includes multiple force-applying plates, with the first strip and the second strip forming multiple intersections, and each force-applying plate correspondingly pressing against one of the intersections.

6. The strip-type spiral reinforced column according to claim 5, characterized in that, Both ends of the force-applying plate are respectively bolted to the axial side surface of the column, so as to press the force-applying plate against the intersection.

7. The strip-type spiral reinforced column according to claim 6, characterized in that, It also includes an internally threaded tube, in which a steel reinforcement cage is provided. One end of the internally threaded tube is fixedly connected to the steel reinforcement cage, and the other end of the internally threaded tube is located on the axial surface of the column for threaded connection of the bolt.

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