CN111021632A - FRP multilayer sheet anchoring system based on ring-clamp synergistic effect - Google Patents
FRP multilayer sheet anchoring system based on ring-clamp synergistic effect Download PDFInfo
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- CN111021632A CN111021632A CN201911366867.8A CN201911366867A CN111021632A CN 111021632 A CN111021632 A CN 111021632A CN 201911366867 A CN201911366867 A CN 201911366867A CN 111021632 A CN111021632 A CN 111021632A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/127—The tensile members being made of fiber reinforced plastics
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/085—Tensile members made of fiber reinforced plastics
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Abstract
本发明公开一种基于环‑夹协同作用的FRP多层片材锚固体系，所述的锚固体系包括FRP多层片材、套环、波形夹板、紧固螺栓、螺母和垫圈。所述FRP多层片材等分为两股，其端头分别按顺时针和逆时针方向绕过所述套环完成缠绕，然后用所述波形夹板、紧固螺栓、螺母和垫圈将FRP多层片材端头夹紧，最后将锚固区FRP多层片材层合固化。本发明充分考虑了FRP自身的材料特性，能很好利用套环处FRP多层片材层间的黏结力、FRP片材与套环之间的摩擦力与索夹处波形夹板与FRP片材之间的机械咬合力与摩擦力，实现套环和索夹的协同锚固作用，从而达到提升锚固效率、缩短锚固长度、简化生产工艺、降低制造成本的目标。
The invention discloses a FRP multilayer sheet anchor system based on the synergy of ring-clamps, the anchor system comprises FRP multilayer sheets, a collar, a corrugated splint, a fastening bolt, a nut and a washer. The FRP multi-layer sheet is equally divided into two strands, the ends of which are respectively clockwise and counterclockwise around the collar to complete the winding, and then the FRP multi-layer is wound with the corrugated splint, fastening bolts, nuts and washers. The end of the layered sheet is clamped, and finally the FRP multi-layered sheet in the anchoring area is laminated and cured. The invention fully considers the material properties of FRP itself, and can make good use of the bonding force between the layers of the FRP multi-layer sheet at the collar, the friction between the FRP sheet and the collar, and the corrugated splint and the FRP sheet at the cable clip. The mechanical occlusal force and friction force between the ferrules realize the synergistic anchoring effect of the collar and the cable clip, so as to achieve the goals of improving the anchoring efficiency, shortening the anchoring length, simplifying the production process and reducing the manufacturing cost.
Description
Technical Field
The invention relates to the technical field of civil engineering, mechanical engineering and composite materials, in particular to an FRP (fiber reinforced plastic) multilayer sheet anchoring system based on ring-clamp synergistic action.
Background
The FRP is a novel high-performance composite material, and has a plurality of excellent mechanical properties such as light weight, high strength, corrosion resistance, fatigue resistance, low creep, high damping and the like. The guy cable made of FRP can solve the defects of overlarge self weight, insufficient strength, low bearing efficiency, poor durability and the like of the steel cable. The FRP is a typical orthotropic material, and although the longitudinal tensile strength is high, the transverse strength and the shear strength are low, so that an excessive normal stress and a shear stress peak are usually generated at an anchorage device outlet of an anchoring system, which causes premature damage of the FRP cable, so that the FRP material is not easy to be anchored by clamping, such as steel. In order to reduce the stress peak value at the outlet of the anchorage device and prevent the premature failure of the FRP inhaul cable, the existing anchorage systems at home and abroad usually adopt special constructional measures of increasing the anchorage length and the anchorage thickness or adopt a sheath, a variable-rigidity adhesive and the like, so that the anchorage device is overlong, overlarge in size, complex in structure and high in manufacturing cost, and the economical efficiency and the applicability of the FRP inhaul cable are greatly influenced.
Disclosure of Invention
The existing FRP inhaul cable anchoring system is mainly a flat clamping system, a wedge-shaped clamping piece or a bonding system, and often has the problems of overlarge anchoring volume, complex structure and poor economical efficiency and applicability. In order to solve the problems, the invention provides a novel anchoring system of an FRP multilayer sheet type inhaul cable based on a ring-clamp synergistic effect, and the aims of shortening the anchoring length, simplifying the structural form and improving the economy and the applicability are achieved through the synergistic effect of a lantern ring and a corrugated clamping plate.
The purpose of the invention is realized by the following technical scheme.
An FRP multilayer sheet type inhaul cable anchoring system based on a ring-clamp synergistic effect comprises an FRP multilayer sheet (1), a lantern ring (2), a corrugated clamping plate (3), a fastening bolt (4), a nut (5) and a gasket (6), wherein the total number of layers of the FRP multilayer sheet (1) is an even number, and the FRP multilayer sheet (1) is equally divided into two strands; one strand of the FRP multi-layer sheet is tightly attached to the lantern ring clockwise to be wound, the other strand of the FRP multi-layer sheet is tightly attached to the first strand of the lantern ring anticlockwise to bypass the lantern ring (2) to finish winding, then the corrugated clamp plate (3), the fastening bolt (4), the nut (5) and the gasket (6) are used for clamping the end of the FRP multi-layer sheet (1), and finally the FRP multi-layer sheet in the anchoring area is laminated and cured.
The FRP multilayer sheet type inhaul cable anchoring system based on the ring-clamp synergistic effect is characterized in that fibers adopted by the FRP multilayer sheet (1) are one or a mixture of carbon fibers, glass fibers, basalt fibers or aramid fibers.
The FRP multilayer sheet material type inhaul cable anchoring system based on the ring-clamp synergistic effect adopts a resin matrix which is one of thermoplastic resin or thermosetting resin.
Compared with the prior art, the invention has the following beneficial effects:
1. the FRP multi-layer sheet type inhaul cable anchoring system based on the ring-clamp synergistic effect can greatly shorten the length of an anchorage device by utilizing the friction force between the FRP sheet and a lantern ring after the FRP sheet is looped and the bonding force between the sheet layers, omits connection measures such as hole opening and the like, and simplifies the structure of the anchoring system.
2. The FRP multilayer sheet type inhaul cable anchoring system based on the ring-clamp synergistic effect can provide anchoring force far larger than that of a flat plate inhaul cable clamp by adopting the wave-shaped cable clamp, greatly reduces the dependence of the anchoring on the bonding force between sheet layers, shortens the clamping distance, solves the problem that the FRP sheet type inhaul cable is wound in a ring shape in the traditional anchoring system for too many times, simplifies the inhaul cable manufacturing process, saves the production time and improves the production efficiency.
Drawings
FIG. 1 is a schematic diagram of an FRP multi-layered sheet anchoring system based on loop-clip synergy.
Fig. 2 is a schematic representation of a CFRP multilayer sheet anchoring system based on loop-clip synergy.
Figure 3 is a schematic representation of a BFRP multilayer sheet anchoring system based on loop-clip synergy.
FIG. 4 is a process diagram of the FRP multi-layer sheet anchoring system based on the ring-clip synergy.
The reference numerals shown in the drawings are respectively:
Detailed Description
In order to make the advantages and technical solutions of the present invention more apparent, embodiments of the present invention are further described below with reference to two examples and corresponding drawings.
The invention fully considers the material characteristics of the FRP, can well utilize the adhesive force among FRP multi-layer sheet layers at the lantern ring, the friction force between the FRP sheet and the lantern ring and the mechanical occluding force and the friction force between the corrugated splint at the cable clamp and the FRP sheet to realize the synergistic anchoring effect of the lantern ring and the cable clamp, thereby achieving the aims of improving the anchoring efficiency, shortening the anchoring length, simplifying the production process and reducing the manufacturing cost. The specific implementation mode is as follows:
the utility model provides a FRP multilayer sheet type cable anchor system based on ring-presss from both sides synergism, includes six parts of FRP multilayer sheet (1), lantern ring (2), wave form splint (3), fastening bolt (4), nut (5) and packing ring (6). The total number of layers of the FRP multilayer sheet (1) is even, the FRP multilayer sheet (1) is equally divided into two strands, and the ends of the FRP multilayer sheet wind around the lantern ring (2) in clockwise and counterclockwise directions respectively to complete winding. And then clamping the FRP multilayer sheet end by the corrugated clamping plate (3), the fastening bolt (4), the nut (5) and the washer (6). And finally laminating and curing the FRP multilayer sheet in the anchoring area.
Example 1
The anchoring system shown in the attached figure 2 is adopted to realize anchoring of the FRP multilayer sheet type inhaul cable, in the embodiment, 6 layers of CFRP sheets are adopted, the thickness of each layer is 1.5mm, the width of each layer is 50mm, each layer is divided into two strands, each strand is divided into 3 layers, the 3 layers of CFRP sheets are respectively arranged on two sides of a lantern ring, the end heads of the 3 layers of CFRP sheets on one side are firstly wound around the lantern ring clockwise, and then the end heads of the CFRP sheets on the other side are wound around the lantern ring anticlockwise to finish winding. The wound CFRP multilayer sheet is then clamped with a corrugated clamping plate of a specific size and fastening bolts at the overlapping of the anchoring zone. And finally laminating and curing the CFRP multilayer sheet of the anchoring area.
Example 2
The anchoring system shown in the attached figure 3 is adopted to realize the anchoring of the FRP multilayer sheet type inhaul cable, and the difference from the embodiment 1 is that: the embodiment adopts the BFRP sheet material, the used BFRP sheet material adopts four layers, the thickness of each layer is 2mm, the width is 50mm, the four layers of BFRP sheet material are equally divided into two strands, the two layers of BFRP sheet material on one side firstly bypass the lantern ring in the clockwise direction, and then the BFRP sheet material on the other side bypasses the lantern ring in the anticlockwise direction to complete winding. Thereafter, anchoring of the BFRP multilayer sheet type guy cable was completed according to the same preparation method as example 1.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911366867.8A CN111021632A (en) | 2019-12-26 | 2019-12-26 | FRP multilayer sheet anchoring system based on ring-clamp synergistic effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911366867.8A CN111021632A (en) | 2019-12-26 | 2019-12-26 | FRP multilayer sheet anchoring system based on ring-clamp synergistic effect |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112064504A (en) * | 2020-09-09 | 2020-12-11 | 清华大学 | Self-anchored carbon fiber cable |
| CN112440489A (en) * | 2020-11-02 | 2021-03-05 | 清华大学 | Production equipment and processing method of fiber reinforced composite material pull rod |
| CN112627359A (en) * | 2020-12-31 | 2021-04-09 | 中冶建筑研究总院有限公司 | Plate cable anchoring joint structure |
| CN113047173A (en) * | 2021-02-08 | 2021-06-29 | 中国建筑股份有限公司 | Fiber material anchor cable and method for manufacturing anchor cable |
| CN113585628A (en) * | 2021-07-20 | 2021-11-02 | 重庆达力索缆科技有限公司 | Carbon fiber inhaul cable capable of being used for large building structure |
| CN113585629A (en) * | 2021-07-20 | 2021-11-02 | 重庆达力索缆科技有限公司 | Carbon fiber inhaul cable and inhaul cable system |
| CN114150581A (en) * | 2021-11-27 | 2022-03-08 | 北京工业大学 | FRP sheet willow leaf-shaped nick splint anchor |
| CN114179379A (en) * | 2021-11-09 | 2022-03-15 | 中国建筑股份有限公司 | A method of manufacturing fiber material anchor cable and fiber material anchor cable |
| CN115179564A (en) * | 2022-07-12 | 2022-10-14 | 中复碳芯电缆科技有限公司 | Self-locking type fiber reinforced composite material parallel plate cable |
| CN117905231A (en) * | 2023-10-24 | 2024-04-19 | 东南大学 | Composite material cable and anchoring method |
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| JPS6433347A (en) * | 1987-07-30 | 1989-02-03 | Sumitomo Const | Method for anchoring polymer tension material |
| CN101929250A (en) * | 2010-09-01 | 2010-12-29 | 中南大学 | Method of Prestressing Fiber Sheets Using Parallel Multi-rods |
| CN104895251A (en) * | 2014-03-04 | 2015-09-09 | 五邑大学 | Wraparound type waveform anchor for fiber sheets and pre-tensioning method thereof |
| CN205421725U (en) * | 2016-03-30 | 2016-08-03 | 陕西通宇新材料有限公司 | Detachable multi coated carbon fiber sheet anchor |
| CN107700867A (en) * | 2017-10-13 | 2018-02-16 | 华南理工大学 | A kind of flexible FRP sheet materials pre-stress stretching device and method |
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2019
- 2019-12-26 CN CN201911366867.8A patent/CN111021632A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6433347A (en) * | 1987-07-30 | 1989-02-03 | Sumitomo Const | Method for anchoring polymer tension material |
| CN101929250A (en) * | 2010-09-01 | 2010-12-29 | 中南大学 | Method of Prestressing Fiber Sheets Using Parallel Multi-rods |
| CN104895251A (en) * | 2014-03-04 | 2015-09-09 | 五邑大学 | Wraparound type waveform anchor for fiber sheets and pre-tensioning method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112064504A (en) * | 2020-09-09 | 2020-12-11 | 清华大学 | Self-anchored carbon fiber cable |
| CN112440489A (en) * | 2020-11-02 | 2021-03-05 | 清华大学 | Production equipment and processing method of fiber reinforced composite material pull rod |
| CN112627359A (en) * | 2020-12-31 | 2021-04-09 | 中冶建筑研究总院有限公司 | Plate cable anchoring joint structure |
| CN112627359B (en) * | 2020-12-31 | 2025-01-21 | 中冶建筑研究总院有限公司 | A plate cable anchoring node structure |
| CN113047173B (en) * | 2021-02-08 | 2023-02-17 | 中国建筑股份有限公司 | A fiber material anchor cable and method for manufacturing the anchor cable |
| CN113047173A (en) * | 2021-02-08 | 2021-06-29 | 中国建筑股份有限公司 | Fiber material anchor cable and method for manufacturing anchor cable |
| CN113585629A (en) * | 2021-07-20 | 2021-11-02 | 重庆达力索缆科技有限公司 | Carbon fiber inhaul cable and inhaul cable system |
| CN113585628A (en) * | 2021-07-20 | 2021-11-02 | 重庆达力索缆科技有限公司 | Carbon fiber inhaul cable capable of being used for large building structure |
| CN114179379A (en) * | 2021-11-09 | 2022-03-15 | 中国建筑股份有限公司 | A method of manufacturing fiber material anchor cable and fiber material anchor cable |
| CN114150581A (en) * | 2021-11-27 | 2022-03-08 | 北京工业大学 | FRP sheet willow leaf-shaped nick splint anchor |
| CN115179564A (en) * | 2022-07-12 | 2022-10-14 | 中复碳芯电缆科技有限公司 | Self-locking type fiber reinforced composite material parallel plate cable |
| CN115179564B (en) * | 2022-07-12 | 2023-10-20 | 中复碳芯电缆科技有限公司 | Self-locking fiber reinforced composite parallel plate cable |
| CN117905231A (en) * | 2023-10-24 | 2024-04-19 | 东南大学 | Composite material cable and anchoring method |
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Application publication date: 20200417 |
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