A self-locking method

Abstract

The present invention relates to the technical field of building structures, and particularly to a self-locking method, which includes a fixing component and a composite bar body inserted into the fixing component. The fixing component includes a reinforcing rib, a first clamping member, a second clamping member, a connecting band and a restraining band. The restraining band includes a first inserting portion, the first clamping member is provided with a first slot, one end of the connecting band is fixedly connected to the second clamping member, and the other end is connected to the first clamping member. The reinforcing rib is arranged on one side of the composite bar body. The first inserting portion is inserted through the first slot, so that the first clamping member, the connecting band, the second clamping member and the restraining band are sequentially wound around the outer side of the composite bar body. The operator pulls the restraining band, so that the fixing component can easily anchor the composite bar body. The composite bar body anchored by the fixing component can improve the overall bonding performance by adjusting the shape of the reinforcing rib or the material of the fixing component, so as to be more easily fixed in concrete.

Description

Technical Field

[0001] The present invention relates to the technical field of building structures, and particularly to a self-locking method. Background Art

[0002] The near exhaustion of river sand has led to the problem of the abuse of sea sand. However, the chloride ions in sea sand will accelerate the corrosion of steel bars, resulting in problems such as the spalling of the protective layer of reinforced concrete structures and the exposure of steel bars, that is, structural aging and deterioration problems. To solve this problem, researchers have developed a fiber composite material with good corrosion resistance (abbreviated as FRP in English) to replace steel. However, the elastic modulus of FRP is relatively low, and the linear elastic tensile constitutive relationship makes the concrete structure made of FRP have the disadvantages of excessive deformation and brittle failure. Therefore, considering comprehensively, an FRP-steel composite bar obtained by wrapping FRP around the outer layer of steel bars is an ideal choice for the stress bars in sea sand concrete structures.

[0003] Since the outer layer of FRP is a brittle material, the FRP-steel composite bar cannot be hooked and anchored like a steel bar, which greatly increases the difficulty of anchoring during use. Therefore, a new anchoring method needs to be proposed to meet the anchoring requirements of FRP-steel composite bars in engineering. Summary of the Invention

[0004] Based on this, the present invention provides a self-locking method that is easier to be anchored.

[0005] The technical solution of the present invention is as follows: A self-locking FRP-steel composite bar anchoring system and its self-locking method include a fixing component and a composite bar body inserted into the fixing component. The fixing component includes a reinforcing rib, a first clamping member, a second clamping member, a connecting band, and a restraining band. The restraining band includes a first inserting portion. The first clamping member is provided with a first slot, and the first inserting portion is inserted through the first slot. The radial cross-sections of the first clamping member and the second clamping member are both annular. One end of the connecting band is fixedly connected to the second clamping member, and the other end is connected to the first clamping member through the first inserting portion inserted into the first slot;

[0006] When the first inserting portion is inserted into the first slot, the first clamping member, the connecting band, the second clamping member, and the restraining band are sequentially connected into a circular ring, the composite bar body is inserted into the circular ring, and the reinforcing rib is arranged on the sides of the first clamping member and the second clamping member away from the composite bar body.

[0007] Optionally, the reinforcing rib includes a conical portion, and the conical portion is fixedly connected to the first clamping member or the second clamping member.

[0008] Optionally, the first clamping member further includes a baffle portion disposed in the first slot and an elastic portion abutting against the baffle portion. The elastic portion abuts against the inner sidewall of the first slot. The first insertion portion has a barbed structure. The first insertion member is inserted into the baffle portion, and the inner diameter of the baffle portion gradually decreases in the direction of passing through from the insertion direction of the first insertion member.

[0009] Optionally, one end of the restraint band away from the second clamping member is tapered.

[0010] Optionally, it further includes a cushion layer disposed between the first clamping member or the second clamping member and the composite rib body.

[0011] Another object of the present invention is to provide a self-locking method, including a control device and the above-mentioned self-locking FRP-steel composite rib anchoring system. The control device includes a first clamping arm, a second clamping arm, a controller, and a hydraulic telescopic rod. One end of the first clamping arm and one end of the second clamping arm are hinged to form a hinge portion. The controller is electrically connected to the hydraulic telescopic rod;

[0012] The self-locking method includes the following steps:

[0013] Pre-locking: Insert the first insertion portion into the first slot so that the first clamping member, the connecting band, the second clamping member, and the restraint band successively surround the outer side of the composite rib body;

[0014] Clamping: The first clamping arm and the second clamping arm respectively abut against the first clamping member and the second clamping member, and the hydraulic telescopic rod abuts against the side of the composite rib body away from the connecting band, so that the self-locking FRP-steel composite rib is clamped by the control device;

[0015] Tightening: Control the hydraulic telescopic rod to extend through the controller, so that the first clamping member and the second clamping member rotate along the outer sidewall of the composite rib body. The first clamping member, the second clamping member, and the connecting band are attached to the outer sidewall of the composite rib body, and then the portion of the restraint band passing through the first clamping member is tightened.

[0016] Optionally, grooves are provided at one ends of the first clamping arm and the second clamping arm away from the hinge portion, and the first clamping member and the second clamping member are both inserted into the grooves.

[0017] Optionally, the first clamping arm and the second clamping arm both have convex portions. The convex portions are disposed on the side of the groove away from the hinge portion and are adjacent to the groove.

[0018] Optionally, the control device further includes a torsion spring disposed at the hinge portion, and both ends of the torsion spring are fixedly connected to the first clamping arm and the second clamping arm respectively.

[0019] Implementing the embodiments of the present invention has the following beneficial effects compared with the prior art:

[0020] For the self-locking FRP-steel composite bar anchoring system and its self-locking method of the present invention, the first insertion portion is inserted into the first slot, so that the first clamping member, the connecting band, the second clamping member, and the restraining band are successively wound around the outer side of the composite bar body. The operator pulls the restraining band to easily anchor the composite bar body by the fixing component. The composite bar body anchored by the fixing component can improve the overall bonding performance by adjusting the shape of the reinforcing rib or the material of the fixing component, and thus is more easily fixed in the concrete. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the self-locking FRP-steel composite bar anchoring system according to the embodiment of the present invention.

[0022] Figure 2 It is a cross-sectional view of the self-locking FRP-steel composite bar anchoring system according to the embodiment of the present invention.

[0023] Figure 3 It is a schematic structural diagram of the fixing component of the self-locking FRP-steel composite bar anchoring system according to the embodiment of the present invention.

[0024] Figure 4 It is a schematic structural diagram of the first slot, the baffle portion, and the elastic portion of the self-locking FRP-steel composite bar anchoring system and its self-locking method according to the embodiment of the present invention.

[0025] Figure 5 It is a schematic structural diagram of the use state of the self-locking FRP-steel composite bar anchoring system and the control device according to the embodiment of the present invention.

[0026] Description of the Reference Numerals:

[0027] 100, self-locking FRP-steel composite bar anchoring system,

[0028] 1, fixing component, 11, reinforcing rib, 111, tapered portion, 12, first clamping member, 121, first slot, 122, baffle portion, 123, elastic portion, 13, second clamping member, 14, connecting band, 15, restraining band, 151, first insertion portion, 16, cushion layer,

[0029] 2, composite bar body,

[0030] 200, control device,

[0031] 3. The first clamping arm, 31. The groove, 32. The convex part,

[0032] 4. The second clamping arm,

[0033] 5. The controller,

[0034] 6. The hydraulic telescopic rod,

[0035] 7. The torsion spring. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0038] In addition, the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0039] Refer to Figure 1 、 Figure 2 and Figure 3, this embodiment provides a self-locking FRP-steel composite bar anchoring system 100, which includes a fixing component 1 and a composite bar body 2 inserted into the fixing component 1. The fixing component 1 includes a reinforcing rib 11, a first clamping member 12, a second clamping member 13, a connecting band 14 and a restraining band 15. The restraining band 15 includes a first inserting portion 151. The first clamping member 12 is provided with a first slot 121, and the first inserting portion 151 passes through the first slot 121. The radial cross-sections of the first clamping member 12 and the second clamping member 13 are both annular. One end of the connecting band 14 is fixedly connected to the second clamping member 13, and the other end is connected to the first clamping member 12 through the first inserting portion 151 inserted into the first slot 121. When the first inserting portion 151 is inserted into the first slot 121, the first clamping member 12, the connecting band 14, the second clamping member 13 and the restraining band 15 are sequentially connected into a circular ring, and the composite bar body 2 is inserted into the circular ring. The reinforcing rib 11 is arranged on the side of the first clamping member 12 and the second clamping member 13 away from the composite bar body 2. Pass the first inserting portion 151 through the first slot 121, so that the first clamping member 12, the connecting band 14, the second clamping member 13 and the restraining band 15 are sequentially wound around the outside of the composite bar body 2. The operator pulls the restraining band 15 so that the fixing component 1 can easily anchor the composite bar body 2. The composite bar body 2 anchored by the fixing component 1 can improve the overall bonding performance by adjusting the shape of the reinforcing rib 11 or the material of the fixing component 1, so as to be more easily fixed in the concrete.

[0040] Preferably, referring to Figure 1 and Figure 2 , in this embodiment, the reinforcing rib 11 includes a tapered portion 111, and the tapered portion 111 is fixedly connected to the first clamping member 12 or the second clamping member 13. Specifically, in this embodiment, the shape of the tapered portion 111 can be a cone, a polyhedral pyramid, or a pyramid of other shapes. After the concrete sets, the reinforcing rib 11 is inserted into the concrete, reducing the possibility of relative movement or rotation between the self-locking FRP-steel composite bar anchoring system 100 and the concrete.

[0041] Preferably, referring to Figure 4In this embodiment, the first clamping member 12 further includes a baffle portion 122 disposed in the first slot 121 and an elastic portion 123 abutting against the baffle portion 122, the elastic portion 123 abutting against the inner side wall of the first slot 121, the first plug-in portion 151 is a barb structure, the first plug-in member is inserted in the baffle portion 122, and the inner diameter of the baffle portion 122 gradually decreases from the insertion direction of the first plug-in member. When a barb of the first plug-in portion 151 is inserted into the first slot 121, the first plug-in portion 151 pushes the baffle portion 122 to squeeze the elastic portion 123, and after the barb passes through the first slot 121, the baffle portion 122 recovers under the action of the elastic portion 123, so that the first plug-in portion 151 of the barb structure cannot move backward, thereby reducing the possibility of loosening between the restraint belt 15 and the first clamping member 12.

[0042] Better, refer to Figure 3 In the present embodiment, the end of the restraint belt 15 away from the second clamping member 13 is tapered, which can facilitate the operator to insert the restraint belt 15 into the first slot 121.

[0043] Better, refer to Figure 2 In this embodiment, the self-locking FRP-steel composite bar anchoring system 100 further includes a cushion layer 16, which is disposed between the first clamping member 12 or the second clamping member 13 and the composite bar body 2. Specifically, in this embodiment, the cushion layer 16 is made of rubber or silicone. In other embodiments, the cushion layer 16 may also be made of soft and corrosion-resistant materials such as engineering plastics. The cushion layer 16 allows the first clamping member 12, the second clamping member 13 and the composite bar body 2 to fit tightly together, thereby preventing the self-locking FRP-steel composite bar anchoring system 100 from being damaged by stress concentration.

[0044] Reference Figure 5 , this embodiment also provides a self-locking method, including a control device 200 and the above-mentioned self-locking FRP-steel composite reinforcement anchoring system 100, the control device 200 includes a first clamping arm 3, a second clamping arm 4, a controller 5 and a hydraulic telescopic rod 6, one end of the first clamping arm 3 and one end of the second clamping arm 4 are hinged to form a hinged portion, and the controller 5 is electrically connected to the hydraulic telescopic rod 6;

[0045] The self-locking method includes the steps of pre-locking, clamping and tightening, wherein:

[0046] The pre-locking includes inserting the first plug-in portion 151 into the first slot 121 , so that the first clamping member 12 , the connecting belt 14 , the second clamping member 13 and the restraining belt 15 are sequentially surrounded on the outside of the composite rib body 2 .

[0047] The clamping includes that the first clamping arm 3 and the second clamping arm 4 are respectively abutted against the first clamping part 12 and the second clamping part 13, and the hydraulic telescopic rod 6 is abutted against the side of the composite rib body 2 away from the connecting belt 14, so that the self-locking FRP-steel composite rib anchoring system 100 is clamped by the control device 200.

[0048] The tensioning includes that the controller 5 controls the hydraulic telescopic rod 6 to extend, so that the first clamping part 12 and the second clamping part 13 rotate along the outer side wall of the composite rib body 2, the first clamping part 12, the second clamping part 13 and the connecting belt 14 are attached to the outer side wall of the composite rib body 2, and then the part of the restraint belt 15 passing through the first clamping part 12 is tightened.

[0049] Under the action of the hydraulic telescopic rod 6, the composite rib body 2 moves outwards, so that the first clamping part 12 and the second clamping part 13 clamped by the first clamping arm 3 and the second clamping arm 4 rotate along the outer side wall of the composite rib body 2, driving the connecting belt 14 to be tightened and the connecting belt 14 to be attached to the composite rib body 2, thereby reducing the gap between the fixing component 1 and the composite rib body 2 as much as possible and improving the stability of the self-locking FRP-steel composite rib anchoring system 100.

[0050] Preferably, referring to Figure 5 , in this embodiment, grooves 31 are provided at the ends of the first clamping arm 3 and the second clamping arm 4 away from the hinge part, and the first clamping part 12 and the second clamping part 13 are both inserted into the grooves 31. The first clamping arm 3 and the second clamping arm 4 are both provided with convex parts 32, and the convex parts 32 are arranged on the side of the grooves 31 away from the hinge part and adjacent to the grooves 31. By inserting the first clamping part 12 and the second clamping part 13 into the grooves 31 and limiting them by the convex parts 32, the possibility of the self-locking FRP-steel composite rib anchoring system 100 rotating during the extension of the hydraulic telescopic rod 6 can be prevented.

[0051] Preferably, referring to Figure 5 , in the embodiment, the control device 200 further includes a torsion spring 7 provided at the hinge part, and the two ends of the torsion spring 7 are respectively fixedly connected to the first clamping arm 3 and the second clamping arm 4, which can not only make the first clamping arm 3 and the second clamping arm 4 only close inwards, but also restore the first clamping arm 3 and the second clamping arm 4 to the initial state after the fixing component 1 is locked.

[0052] The self-locking FRP-steel composite rib anchoring system 100 and its self-locking method in this embodiment have the following beneficial effects:

[0053] 1. Insert the first plugging part 151 into the first slot 121 so that the first clamping part 12, the connecting belt 14, the second clamping part 13 and the restraining belt 15 are successively wound around the outside of the composite rib body 2. The operator pulls the restraining belt 15 to enable the fixing assembly 1 to easily anchor the composite rib body 2. The composite rib body 2 anchored by the fixing assembly 1 can improve the overall bonding performance by adjusting the shapes of the first clamping part 12 and the second clamping part 13 or by adjusting the material of the fixing assembly 1, so as to be more easily fixed in the concrete.

[0054] 2. Under the action of the hydraulic telescopic rod 6, the composite rib body 2 moves outwards, causing the first clamping part 12 and the second clamping part 13 clamped by the first clamping arm 3 and the second clamping arm 4 to rotate along the outer wall of the composite rib body 2, driving the connecting belt 14 to be tightened and the connecting belt 14 to fit with the composite rib body 2, thereby minimizing the gap between the fixing assembly 1 and the composite rib body 2 and improving the stability of the self-locking FRP-steel composite rib anchoring system 100.

[0055] 3. The two ends of the torsion spring 7 are fixedly connected to the first clamping arm 3 and the second clamping arm 4 respectively, which can not only make the first clamping arm 3 and the second clamping arm 4 only close inwards, but also restore the first clamping arm 3 and the second clamping arm 4 to the initial state after the fixing assembly 1 is locked.

[0056] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and deformations can be made, and these improvements and deformations are also regarded as the protection scope of the present invention.

Claims

1. A self-locking method, characterized in that, It comprises a control device and a self-locking FRP-steel composite reinforcement anchoring system, wherein the control device comprises a first clamping arm, a second clamping arm, a controller and a hydraulic telescopic rod, one end of the first clamping arm and one end of the second clamping arm are hinged to form a hinged portion, and the controller is electrically connected to the hydraulic telescopic rod; The self-locking FRP-steel composite bar anchoring system comprises a fixing assembly and a composite bar body inserted in the fixing assembly, the fixing assembly comprises a reinforcing rib, a first clamping piece, a second clamping piece, a connecting belt and a restraining belt, the restraining belt comprises a first plug-in portion, the first clamping piece is provided with a first slot, and the first plug-in portion is inserted into the first slot, the radial cross-sections of the first clamping piece and the second clamping piece are both annular, one end of the connecting belt is fixedly connected to the second clamping piece, and the other end is inserted into the first slot through the first plug-in portion and connected to the first clamping piece; When the first plug-in portion is inserted into the first slot, the first clamping member, the connecting belt, the second clamping member and the restraining belt are sequentially connected to form a circular ring, the composite rib body is inserted into the circular ring, and the reinforcing rib is provided on a side of the first clamping member and the second clamping member away from the composite rib body; The self-locking method comprises the following steps: Pre-locking: inserting the first plug-in portion into the first slot, so that the first clamping piece, the connecting belt, the second clamping piece and the restraining belt are sequentially surrounded by the outside of the composite rib body; Clamping: the first clamping arm and the second clamping arm are respectively in contact with the first clamping member and the second clamping member, and the hydraulic telescopic rod is in contact with the side of the composite reinforcement body away from the connecting belt, so that the self-locking FRP-steel composite reinforcement anchoring system is clamped by the control device; Tightening: The controller is used to control the hydraulic telescopic rod to extend, so that the first clamping piece and the second clamping piece rotate along the outer wall of the composite rib body, the first clamping piece, the second clamping piece and the connecting belt are fitted with the outer wall of the composite rib body, and then the part of the restraint belt passing through the first clamping piece is tightened.

2. The self-locking method according to claim 1, wherein The reinforcing rib comprises a tapered portion, and the tapered portion is fixedly connected to the first clamping member or the second clamping member.

3. The self-locking method according to claim 1, wherein The first clamping part also includes a baffle portion arranged in the first slot and an elastic portion abutting against the baffle portion, the elastic portion abutting against the inner wall of the first slot, the first plug-in portion is a barb structure, the first plug-in portion is inserted in the baffle portion, and the inner diameter of the baffle portion gradually decreases from the insertion direction to the exit direction of the first plug-in portion.

4. The self-locking method according to claim 1, wherein One end of the restraining belt away from the second clamping piece is tapered.

5. The self-locking method according to claim 1, characterized in that The self-locking FRP-steel composite bar anchoring system further includes a cushion layer, which is arranged between the first clamping piece or the second clamping piece and the composite bar body.

6. The self-locking method according to claim 1, wherein A groove is provided at one end of the first clamp arm and the second clamp arm away from the hinge portion, and the first clamping member and the second clamping member are inserted into the groove.

7. The self-locking method according to claim 6, wherein Both the first clamping arm and the second clamping arm are provided with convex parts, and the convex parts are arranged on one side of the groove away from the hinge part and are adjacent to the groove.

8. The self-locking method according to claim 1, wherein The control device further includes a torsion spring arranged at the hinge part, and two ends of the torsion spring are respectively fixedly connected to the first clamping arm and the second clamping arm.

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