CN113389403A - Z-pin anchoring member for preventing fiber reinforced layer at end part of steel member with open section from being stripped and method thereof - Google Patents
Z-pin anchoring member for preventing fiber reinforced layer at end part of steel member with open section from being stripped and method thereof Download PDFInfo
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- CN113389403A CN113389403A CN202110825483.9A CN202110825483A CN113389403A CN 113389403 A CN113389403 A CN 113389403A CN 202110825483 A CN202110825483 A CN 202110825483A CN 113389403 A CN113389403 A CN 113389403A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- Working Measures On Existing Buildindgs (AREA)
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Abstract
The invention relates to the technical field of fiber reinforced members, in particular to a Z-pin anchoring member for preventing a fiber reinforced layer at the end part of a steel member with an open cross section from peeling off and a method thereof, wherein the Z-pin anchoring member comprises a reinforced member, the fiber reinforced layer is adhered to the top part of the reinforced member, FRP sheets are adhered to the top parts of the two ends of the fiber reinforced layer, the two ends of the bottom part of each FRP sheet are adhered to the reinforced member, and a Z-pin is inserted into each FRP sheet. Facilitating the detection of defects before failure of the reinforcing structure.
Description
Technical Field
The invention relates to the technical field of fiber reinforced members, in particular to a Z-pin anchoring member for preventing a fiber reinforced layer at the end part of an open section steel member from being stripped and a method thereof.
Background
The carbon fiber reinforcement is widely applied to reinforcement projects such as bridges and tunnels, is a common building reinforcement means, and has the advantages of effectively improving the structural load capacity, closing cracks and the like. The carbon fiber cloth reinforcing method is characterized in that high-performance carbon fibers are bonded on the surface of a concrete member or a steel structure by using epoxy resin or special gel matched with the carbon fibers, and the purpose of improving the bearing capacity and strength of the member is achieved by utilizing the characteristics of light weight, high strength, corrosion resistance, easiness in design and the like of the carbon fibers. According to the existing use condition, the damage of the carbon fiber reinforced steel structure is mostly caused by the fact that the end part of the carbon fiber is stuck and peeled off from the member, and the peeling area is continuously increased along with the increase of the load and the prolonging of the time, and finally the peeling damage is caused.
Disclosure of Invention
In order to solve the problems, the invention provides a Z-pin anchoring member for preventing a fiber reinforced layer at the end part of an open section steel member from peeling and a method thereof.
In order to achieve the above object, the present invention adopts the following technical solutions:
the utility model provides a prevent Z-pin anchor component that open cross-section steel member tip fibre back up coat peeled off, includes the reinforcement component, the top of reinforcement component is pasted and is had fibre back up coat, and the top at fibre back up coat both ends is pasted and is had the FRP sheet, and the both ends of FRP sheet bottom are pasted mutually with the reinforcement component, and has inserted the Z-pin in the FRP sheet, and the Z-pin runs through the fibre back up coat and extends to in the reinforcement component.
Preferably, an adhesive layer is disposed between the reinforcing member and the fiber reinforcing layer and between the reinforcing member and the FRP sheet, the reinforcing member is adhered with the fiber reinforcing layer and the FRP sheet through the adhesive layer, the adhesive layer is disposed between the fiber reinforcing layer and the FRP sheet, and the FRP sheet is adhered with the fiber reinforcing layer through the adhesive layer.
Preferably, the thickness of the FRP sheet is 0.2-1 mm, and the FRP sheet and the fiber reinforced layer are in a cross shape.
Preferably, the diameter of the Z-pin is 0.8-1mm, the density is 5 multiplied by 5mm, and the included angle between the Z-pin and the FRP sheet is 60-70 degrees.
Preferably, the pin head type of the Z-pin is a semi-circle countersunk head type, a bulge is formed on the surface of the Z-pin, and the cross section of the Z-pin is made into a special-shaped section.
Preferably, the plurality of groups of Z-pin pins are distributed in a staggered mode, and the cross section of the reinforcing member is an opening cross section.
A Z-pin anchoring method for preventing a fiber reinforced layer at the end part of an open-section steel member from being peeled off comprises the following steps:
1) carrying out decontamination treatment on the surface of the area of the reinforcing member to be adhered, and polishing and flattening the convex part until a fresh surface is completely exposed;
2) paying off and positioning the area of the reinforcing component needing to be adhered, and determining the size of the fiber reinforcing layer according to the size;
3) after the fiber reinforcing layer is cut, treating surface dust and stains, and standing and drying for 20 min;
4) uniformly coating the adhesive on the surface of the reinforced area by using a roller or a brush, wherein the thickness of the adhesive is not more than 0.4 mm;
5) after dust and stains on the surface of the FRP sheet are treated, uniformly coating an adhesive on the surface contact surface of the FRP sheet and the surface contact surface of the fiber reinforced layer by using a brush, and adhering the FRP sheet and the fiber reinforced layer to two ends of a reinforced area of the fiber reinforced layer, wherein the fiber direction of the FRP sheet and the fiber direction of the fiber reinforced layer are in a cross shape;
6) fixing the overlapped area of the reinforcing member, the fiber reinforcing layer and the FRP sheet material by using a fixing clamp, and drilling a fine hole with the diameter of 0.8-1mm in the overlapped area, wherein the depth of the fine hole is greater than the length of a Z-pin, the density is 5mm multiplied by 5mm, and the angle is 60-70 degrees with the plane of the reinforcing member;
7) uniformly coating an adhesive on the Z-pin with the surface provided with the bulge, and implanting the Z-pin into the pore;
8) and (5) removing the fixing clamp after the whole structure is cured, and finishing the reinforcing process.
Due to the adoption of the technical scheme, the invention has the beneficial effects that: according to the invention, the cross section area of the Z-pin is small, the damage to the fiber reinforced layer is small, the anti-pulling performance is excellent, the problem of end peeling can be greatly improved, and the service life of the fiber reinforced layer is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only for the present invention and protect some embodiments, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a side cross-sectional view of the present invention;
fig. 4 is a schematic diagram of the structure of the Z-pin of the present invention.
In the figure: 1. a reinforcement member; 2. a fiber reinforcement layer; 3. FRP sheet material; 4. a Z-pin; 5. and (3) an adhesive.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
As shown in fig. 1 to 4, a Z-pin anchoring member for preventing a fiber reinforced layer at an end portion of an open cross-section steel member from being peeled off includes a reinforcing member 1, a fiber reinforced layer 2 is adhered to a top portion of the reinforcing member 1, FRP sheets 3 are adhered to top portions of both ends of the fiber reinforced layer 2, both ends of a bottom portion of the FRP sheets 3 are adhered to the reinforcing member 1, Z-pin pins 4 are inserted into the FRP sheets 3, and the Z-pin pins 4 extend into the reinforcing member 1 through the fiber reinforced layer 2.
The fiber reinforced plastic composite material is characterized in that adhesive layers 5 are arranged between the reinforcing member 1 and the fiber reinforced plastic layer 2 as well as between the reinforcing member 1 and the FRP sheet 3, the fiber reinforced plastic layer 2 and the FRP sheet 3 are adhered to the reinforcing member 1 through the adhesive layers 5, the adhesive layers 5 are arranged between the fiber reinforced plastic layer 2 and the FRP sheet 3, and the FRP sheet 3 is adhered to the fiber reinforced plastic layer 2 through the adhesive layers 5
The thickness of the FRP sheet 3 is 0.2-1 mm, and the FRP sheet 3 and the fiber reinforced layer 2 are cross-shaped.
The diameter of the Z-pin 4 is 0.8-1mm, the density is 5 multiplied by 5mm, and the included angle between the Z-pin 4 and the FRP sheet 3 is 60-70 degrees.
The pin head type of the Z-pin 4 is a semi-circle countersunk head type, a bulge is formed on the surface of the Z-pin 4, and the cross section of the Z-pin 4 is made into a special-shaped section.
The plurality of groups of Z-pin pins 4 are in a dislocation distribution state, and the cross section of the reinforcing member 1 is an opening cross section.
A Z-pin anchoring method for preventing a fiber reinforced layer at the end part of an open-section steel member from peeling off is characterized by comprising the following steps:
1) carrying out decontamination treatment on the surface of the area of the reinforcing member 1 to be adhered, and polishing the protruding part to be flat until the fresh surface is completely exposed;
2) paying off and positioning the area of the reinforcing component 1 needing to be pasted, and determining the size of the fiber reinforcing layer 2 according to the size;
3) after the fiber reinforcing layer 2 is cut, treating the dust and the stains on the surface of the fiber reinforcing layer, and standing and drying for 20 min;
4) uniformly coating the adhesive 5 on the surface of the reinforced area by using a roller or a brush, wherein the thickness of the adhesive is not more than 0.4 mm;
5) after dust and stains on the surface of the FRP sheet 3 are treated, uniformly coating an adhesive 5 on the surface contact surface of the FRP sheet 3 and the surface contact surface of the fiber reinforced layer 2 by using a brush, and adhering the adhesive to two ends of the reinforced area of the fiber reinforced layer 2, wherein the fiber direction of the FRP sheet 3 and the fiber direction of the fiber reinforced layer 2 are in a cross shape;
6) fixing the overlapped area of the reinforcing member 1, the fiber reinforcing layer 2 and the FRP sheet 3 by using a fixing clamp, and drilling a fine hole with the diameter of 0.8-1mm in the overlapped area, wherein the depth of the fine hole is greater than the length of the Z-pin 4, the density is 5mm multiplied by 5mm, and the angle is 60-70 degrees with the plane of the reinforcing member 1;
7) uniformly coating an adhesive 5 on a Z-pin 4 with a bulge on the surface, and implanting the Z-pin into the fine hole;
8) and (5) removing the fixing clamp after the whole structure is cured, and finishing the reinforcing process.
According to the invention, the Z-pin 4 has small cross-sectional area, small damage to the fiber reinforced layer 2 and excellent anti-pulling performance, the problem of end peeling can be greatly improved, the service life of the fiber reinforced layer 2 is prolonged, and because the end part of the fiber reinforced layer 2 depends on the mechanical anchoring force of the Z-pin 4 and the interface bonding force of the adhesive 5, the reinforcing bearing capacity can not be rapidly reduced to zero when the adhesive layer is damaged like the traditional reinforcing mode, but the fiber reinforced layer has certain ductility, so that the defect can be conveniently detected before the reinforcing structure fails.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A Z-pin anchor member for preventing the peeling of a fiber reinforced layer at the end of an open section steel member, comprising a reinforcing member (1), characterized in that: the reinforced member is characterized in that a fiber reinforced layer (2) is pasted on the top of the reinforced member (1), FRP (fiber reinforced plastic) sheets (3) are pasted on the tops of two ends of the fiber reinforced layer (2), two ends of the bottom of the FRP sheets (3) are pasted with the reinforced member (1), Z-pin pins (4) are inserted into the FRP sheets (3), and the Z-pin pins (4) penetrate through the fiber reinforced layer (2) and extend into the reinforced member (1).
2. A Z-pin anchoring member for preventing peeling of fiber reinforced layers at the end of an open-section steel member according to claim 1, wherein: the fiber reinforced plastic composite panel is characterized in that adhesive layers (5) are arranged between the reinforcing member (1) and the fiber reinforced plastic layers (2) and the FRP sheets (3), the reinforcing member (1) is adhered with the fiber reinforced plastic layers (2) and the FRP sheets (3) through the adhesive layers (5), the adhesive layers (5) are arranged between the fiber reinforced plastic layers (2) and the FRP sheets (3), and the fiber reinforced plastic layers (2) are adhered with the FRP sheets (3) through the adhesive layers (5).
3. A Z-pin anchoring member for preventing peeling of fiber reinforced layers at the end of an open-section steel member according to claim 1, wherein: the thickness of the FRP sheet (3) is 0.2-1 mm, and the FRP sheet (3) and the fiber reinforced layer (2) are in a cross shape.
4. A Z-pin anchoring member for preventing peeling of fiber reinforced layers at the end of an open-section steel member according to claim 1, wherein: the diameter of the Z-pin (4) is 0.8-1mm, the density is 5 multiplied by 5mm, and the included angle between the Z-pin (4) and the FRP sheet (3) is 60-70 degrees.
5. A Z-pin anchoring member for preventing peeling of fiber reinforced layers at the end of an open-section steel member according to claim 1, wherein: the pin head type of the Z-pin (4) is a semicircular countersunk head type, a bulge is formed on the surface of the Z-pin (4), and the cross section of the Z-pin (4) is made into a special-shaped section.
6. A Z-pin anchoring member for preventing peeling of fiber reinforced layers at the end of an open-section steel member according to claim 1, wherein: the Z-pin pins (4) are in a dislocation distribution state, and the cross section of the reinforcing member (1) is an opening cross section.
7. A Z-pin anchoring method for preventing a fiber reinforced layer at the end part of an open-section steel member from peeling off is characterized by comprising the following steps:
1) carrying out decontamination treatment on the surface of a region of the reinforcing member (1) to be adhered, and polishing and flattening the convex part until a fresh surface is completely exposed;
2) paying off and positioning the area of the reinforcing component (1) to be adhered, and determining the size of the fiber reinforcing layer (2) according to the size;
3) after the fiber reinforcing layer (2) is cut, treating the dust and the stains on the surface of the fiber reinforcing layer, and standing and drying for 20 min;
4) uniformly coating the adhesive 5 on the surface of the reinforced area by using a roller or a brush, wherein the thickness of the adhesive is not more than 0.4 mm;
5) after dust and stains on the surface of the FRP sheet (3) are treated, uniformly coating an adhesive 5 on the surface contact surface of the FRP sheet (3) and the surface contact surface of the fiber reinforced layer (2) by using a brush, and adhering the adhesive to two ends of the reinforced area of the fiber reinforced layer (2), wherein the fiber direction of the FRP sheet (3) and the fiber direction of the fiber reinforced layer (2) are crossed;
6) fixing the overlapped area of the reinforcing member (1), the fiber reinforcing layer (2) and the FRP sheet (3) by using a fixing clamp, drilling a pore with the diameter of 0.8-1mm in the overlapped area, wherein the depth of the pore is greater than the length of the Z-pin (4), the density is 5mm multiplied by 5mm, and the angle is 60-70 degrees with the plane of the reinforcing member (1);
7) uniformly coating an adhesive 5 on a Z-pin (4) with a bulge on the surface, and implanting the Z-pin into the pore;
8) and (5) removing the fixing clamp after the whole structure is cured, and finishing the reinforcing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110825483.9A CN113389403A (en) | 2021-07-21 | 2021-07-21 | Z-pin anchoring member for preventing fiber reinforced layer at end part of steel member with open section from being stripped and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110825483.9A CN113389403A (en) | 2021-07-21 | 2021-07-21 | Z-pin anchoring member for preventing fiber reinforced layer at end part of steel member with open section from being stripped and method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113389403A true CN113389403A (en) | 2021-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110825483.9A Pending CN113389403A (en) | 2021-07-21 | 2021-07-21 | Z-pin anchoring member for preventing fiber reinforced layer at end part of steel member with open section from being stripped and method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115162621A (en) * | 2022-07-18 | 2022-10-11 | 江苏集萃碳纤维及复合材料应用技术研究院有限公司 | Thermoplastic composite material rib material and production method thereof |
-
2021
- 2021-07-21 CN CN202110825483.9A patent/CN113389403A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115162621A (en) * | 2022-07-18 | 2022-10-11 | 江苏集萃碳纤维及复合材料应用技术研究院有限公司 | Thermoplastic composite material rib material and production method thereof |
| CN115162621B (en) * | 2022-07-18 | 2023-08-25 | 江苏集萃碳纤维及复合材料应用技术研究院有限公司 | Production method of thermoplastic composite material rib material |
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