CN1252393C - Method of clamping and anchoring high strength composite material - Google Patents
Method of clamping and anchoring high strength composite material Download PDFInfo
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- CN1252393C CN1252393C CN 03117814 CN03117814A CN1252393C CN 1252393 C CN1252393 C CN 1252393C CN 03117814 CN03117814 CN 03117814 CN 03117814 A CN03117814 A CN 03117814A CN 1252393 C CN1252393 C CN 1252393C
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Abstract
The present invention relates to a new method for clamping and anchoring high-strength composite materials, which belongs to the technical field of clamping and anchoring high strength composite materials. By using the method, composite materials can be reliably clamped and anchored with a waved tooth clamping anchor, and the difficult problem for clamping and anchoring sheet materials made of composite materials is effectively solved. The method has the advantages of simple process, convenient operation and favorable suitability; the clamping anchor has various shapes and favorable applicability; the clamping and anchoring composite materials have the advantages of favorable effect, high reliability, simple manufacturing technology, low cost and favorable economical efficiency. The method can be applied to manufacturing tension members made of large tonnage high strength composite materials, such as suspension cables, bracing cables, prestressing tendons, etc., and can also be applied to manufacturing reinforcing materials of parts for bearing tensile stress, such as beams, plates, columns, etc. in engineering structures, such as steel structures, wood structures, concrete structures, etc. The method can also be applied to strengthening and reinforcing the existing engineering structures, such as bridges, houses, ships, etc.
Description
One, technical field
The invention belongs to the clamping and the anchorage technology field of high strength composite.
Two, background technique
High strength composite as cfrp, high molecular polymer fiber reinforced plastic, glass fiber reinforced plastic etc., is to be to strengthen body with the high strength fibre, is the composite material that matrix combines with the resin.Since high strength composite have from heavy and light, intensity high and lowly creep, performances such as low thermal coefficient of expansion, moderate Young's modulus and good anticorrosive, endurance, use very extensive, particularly make stayed structure with it, the bearing capacity ability is big, is the ideal substitute of prestressing steel wire bunch.Composite material is using on the form and can be divided three classes: sheet material class, bar class and grid class, wherein the sheet material class is divided into cloth material and sheet material again.The bar class is made and used more complicated, and is under test substantially; And the manufacturing of sheet material class and processing are the easiest, use also relatively extensively, are mainly used in reinforcement and strengthening engineering structure aspect.
In the application of high strength composite because the shear resistance of composite material is relatively poor, and it self to the receptance of defective, the clamping of composite material and anchorage technology are the hang-ups of puzzlement engineering circle always.Up till now for this reason, the clamping of the multiple high strength composite that countries in the world have been developed and anchor system, can only be that object carries out clamping and anchoring all with the composite material bar, these anchor systems roughly can be divided into two classes: a class is the sleeve completion method, is about to the composite material bar and puts into metal sleeve and insert resin or other high strength bond material; Another kind of is to apply soft alloyage, promptly applies soft alloy in the certain limit of the end of composite material bar, and then with method anchorings such as wedgings.Because the manufacturing process complexity of these methods, size are big, poor reliability, and cost is also expensive, is not easy to large-scale popularization application in engineering is used.And for the clamping and the anchoring of composite material sheet, adopting above method is an insurmountable at all difficult problem.
Three, summary of the invention
The new method that the purpose of this invention is to provide a kind of clamping and anchoring high strength composite is specially adapted to clamping and anchoring to the composite material sheet class.Method of the present invention is simple, and is easy and simple to handle, and manufacturing process is simple, with low cost, clamping and anchoring effective, reliability is high, be easy in engineering, apply.
The object of the present invention is achieved like this: the new method of a kind of clamping and anchoring high strength composite, the device of its clamping and anchoring composite material is to adopt the patented technology of the inventor in " high strength composite waveform toothholder tool anchor " (application number is 02244587.9) of application on October 29th, 2002, mainly be the waveform tooth characteristics of utilizing waveform toothholder tool anchor, with the high strength composite sheet attaching in last waveform tooth plate, the corrugated sheet of putting more energy into reaches down between the waveform tooth plate, then with compress and locking device to its apply certain pressure and the locking, make the waveform tooth plate, the corrugated sheet of putting more energy into, following waveform tooth plate and the composite material sheet between them are pasted mutually and extruding and overall structure of formation with combining closely, rely on cohesive force and frictional force between them, realize reliable clamping of high strength composite sheet material and anchoring.
The method step of clamping and anchoring composite material is as follows:
The first step: the shape of selecting waveform toothholder tool anchor
1. strengthen or during the stabilization works structure
When with high strength composite enhancing or stabilization works structure, should be according to the shape of the engineering structure that is enhanced or reinforces, the shape of the waveform toothholder tool anchor that selection adapts with it is as straight line type or curved or broken line type etc.The line style of waveform toothholder tool anchor is the shape that the waveform tooth row is listed as in the waveform toothholder tool anchor.For example, the bottom surface of beam structure is reinforced, if the bottom surface is the plane, then can select straight line type anchor clamps anchor, promptly the waveform tooth is arranged in a linear, and adapts with flat surface; Again such as, when columniform column engineering structure is along the circumferential direction reinforced, can select the waveform toothholder tool anchor of circular arc type, promptly the waveform tooth is circular arc and arranges, and adapts with periphery; For another example, be the engineering structure of rectangle when carrying out the reinforcing of cross-sectional direction to cross section, the waveform toothholder tool anchor that is provided with at place, four angles can be selected the anchor clamps anchor of broken line type, and promptly the shape with four angles is complementary, or the like.After the shape of waveform toothholder tool anchor is determined, the last waveform tooth plate or the following waveform tooth plate of selected anchor clamps anchor are fixedly installed (as modes such as welding, embed, anchor into) in the engineering structure surface that is enhanced or is reinforced, perhaps the waveform teeth groove that the shape of reservation and selected waveform toothholder tool anchor matches on the engineering structure surface that is enhanced or reinforces.
2. when making the large-tonnage stayed structure
When making drag-line shape member, can select the waveform toothholder tool anchor of types such as parallel type or fan-shaped formula with high strength composite.Parallel type or fan-shaped formula are to go up the arrangement of each waveform flank of tooth of waveform tooth plate, the corrugated sheet of putting more energy into, following waveform tooth plate in the waveform toothholder tool anchor, i.e. the mutual alignment of each wavy surface relation.For example, if each wavy surface is parallel to each other, then be parallel type.
The size and the number of waveform toothholder tool anchor should be decided according to the size of the engineering structure that is enhanced or reinforces or the tonnage of drag-line.The quantity of the corrugated sheet of being set up between the upper and lower waveform tooth plate of waveform toothholder tool anchor of putting more energy into should be decided according to the thickness and the number of plies of high strength composite sheet material.Second step: carry out surface treatment and brushing Bond
The wavy surface of the upper and lower waveform tooth plate of selected waveform toothholder tool anchor and the corrugated sheet of putting more energy into is eliminated rust, polishes and processing such as cleaning, and at its external coating Bond.
The 3rd step: the pretreatment of composite material sheet
1. when composite material sheet is cloth material without the dipping binding resin, must earlier it fully be flooded binding resin, and grinding compacting;
2. when composite material sheet is the sheet material of oneself dipping binding resin and solidifying, it is tabular earlier its end processing (as methods such as heat treatment process) to be made the waveform that the wavy surface with waveform toothholder tool anchor matches, and thereon, lower surface brushing Bond.
The 4th step: place composite material sheet
1. when composite material sheet is thicker, the composite material sheet layering is positioned over oneself carries out between the last waveform tooth plate of surface treatment and brushing Bond, the corrugated sheet of putting more energy into, the following waveform tooth plate.
2. when composite material sheet is thin, needn't set up the corrugated sheet of putting more energy into, carry out between the upper and lower waveform tooth plate of surface treatment and brushing Bond and composite material sheet directly is positioned over oneself.
The 5th step: compress and lock
After treating that above step is finished, installation compresses and locking device, and to upper and lower waveform tooth plate apply impacting force and the locking, make upper and lower waveform tooth plate and put more energy into corrugated sheet and between them the composite material sheet of clamping push mutually, with combining closely formation an overall structure.For example, the bolt that uses the band spring washer is as compressing and during locking device, with bolt be passed in the waveform tooth plate, the corrugated sheet of putting more energy into, the bolt hole reserved on the waveform tooth plate down, load onto spring washer, fastening nut, just can apply certain impacting force and locking to upper and lower waveform tooth plate, make the waveform tooth plate, down the waveform tooth plate, put more energy into corrugated sheet and between them the composite material sheet of clamping push mutually, form an overall structure with combining closely, realization is to the clamping and the anchoring of composite material sheet.
The 6th step: natural Health preservation
After treating that above step is finished, but natural Health preservation treated that Bond produces intensity more than 24 hours.
Working principle of the present invention is to utilize composite material sheet and upper and lower waveform tooth plate and put more energy into cohesive force and frictional force between the corrugated sheet, with composite material clamping and be anchored in upper and lower waveform tooth plate and put more energy between the corrugated sheet reliably; Upper and lower waveform tooth plate is flange (or recessed edge) structure, and the effect that increases frictional force and increase bond area is arranged; Compress and locking device makes the waveform tooth plate, the corrugated sheet of putting more energy into, following waveform tooth plate and pastes between them between the composite material sheet of also clamping and push mutually, further increase frictional force and improve cohesive force, make the clamping of composite material sheet and anchoring effect better more reliable.In addition, because these anchor clamps anchor is to rely on cohesive force and frictional force work, the composite material of shearing resistance poor-performing not have concentrated shear action, so composite material can not solved the difficult problem of the clamping and the anchoring of composite material sheet reliably by pinch off.
The present invention adopts the method for technique scheme simple, easy to operate, and applicability is good; The shape of waveform toothholder tool anchor and kind can be diversified, and adaptability is good; Clamping and anchoring composite material effective, the reliability height; Manufacturing process simple (, just can make the power of bearing and reach large-tonnage high strength composite drag-line member more than 400 tons) as adopting easy artisan craftsmanship, with low cost, good economy performance; Or the like, and effectively and reliably solved the difficult problem of the clamping and the anchoring of composite material sheet.Use the present invention, can make large-tonnage high strength composite tension member, as hoist cable, drag-line, prestressed tendon etc.; Also can be used for enhancement engineering structure (as steel structure, wood structure, concrete structure etc.), for example buttress brace, plate, post etc. bear the position of tensile stress, can improve the bearing capacity of these members greatly; Can also carry out the usefulness of reinforcement and strengthening to existing engineering structure (as bridge, house, boats and ships etc.), to improve its working life etc.
Four, description of drawings
Fig. 1: the structural representation of waveform toothholder tool anchor;
Fig. 2: the schematic representation of clamping of thick type composite material sheet and anchoring;
Fig. 3: the schematic representation of clamping of slim carbon fiber composite sheet material and anchoring.
Among the figure: put more energy into corrugated sheet, 4 composite material sheets, 5 bolts hole, 6 of waveform tooth plate on 1,2 times waveform tooth plates, 3 withheld preformed hole.
Five, embodiment
Below in conjunction with embodiment, further specify the present invention.
Shown in Fig. 1,3, as follows to the method step of clamping of slim carbon fiber composite sheet material and anchoring:
The first step: the shape of selecting the anchor clamps anchor
Because present embodiment is that the carbon fibre cloth sheet material is carried out clamping and anchoring, and the carbon fibre cloth sheet material is thinner, the number of plies also few (promptly 2 * 0.111mm), so the linear waveform toothholder of present embodiment selection parallel type tool anchor and is not set up the corrugated sheet of putting more energy into.
Present embodiment is with 4 block length 200mm, wide 100mm, and the steel plate of thick 25mm is made two respectively and is gone up waveform tooth plates 1 and following waveform tooth plates 2, constitutes two waveform toothholder tool anchors.Each waveform toothholder tool anchor is made up of the last waveform tooth plate 1 and the following waveform tooth plate 2 that mutually coincide, and reserves four high-strength bolt holes 5 and two thereon and withhold and consolidate hole 6 in advance.
Second step: carry out surface treatment and brushing Bond
Respectively the wavy surface of the last waveform tooth plate 1 of each anchor clamps anchor and following waveform tooth plate 2 is eliminated rust, polishes and surface treatment such as cleaning.Brushing Bond on each wavy surface then;
The 3rd step: the pretreatment of composite material sheet
Cut out the wide carbon fibre cloth sheet material of 10cm by hand, tile after the doubling, it is fully flooded, rolls with epoxy resin impregnated dose.
The 4th step: place the carbon fibre cloth sheet material
The two ends of the carbon fibre cloth sheet material that will fully flood then are pasted on respectively between the upper and lower waveform tooth plate of two anchor clamps anchors.
The 5th step: compress and lock
The high-strength bolt of four diameter 16mm is passed the prepared screw-bolt hole of upper and lower waveform tooth plate, and tighten the nut of band prestressed spring packing ring, thereby realize upper and lower waveform tooth plate is applied certain pressure and locking, make upper and lower waveform tooth plate and between institute's carbon fibre cloth sheet material of pasting also clamping push mutually, overall structure of formation with combining closely.
The 6th step: natural Health preservation 24 hours.
The carbon fiber composite that adopts the inventive method clamping and anchoring is carried out pull test, promptly withhold preformed hole 6 with withholding to pass, and hang with the anchor clamps anchor of wire rope with the one end, the anchor clamps anchor of the other end hangs a wooden small basket that is used to place weight, weighting material in the wood basket then is till the carbon fibre cloth sheet material is broken.After the carbon fibre cloth sheet material is broken, the anchor clamps anchor is taken apart, checked, clean, and then repeat above test.Show through test of many times: the design maximum tension stress of carbon fibre cloth sheet material is 2650MPa, the actual tests value is all more than 3200MPa, reach as high as 3976Mpa, proof adopts the method for clamping of the present invention and anchoring composite material on the one hand, the carbon fiber composite sheet material can have been given full play to its resistance to tension, the method that has also proved clamping of the present invention and anchoring composite material on the other hand is safe and reliable, respond well, and the composite material sheet in the anchor clamps anchor is not had any damage.In a word, evidence: utilize waveform toothholder tool anchor, it is very reliable adopting high strength composite materials such as method clamping of the present invention and anchoring carbon fiber composite sheet material.
Claims (2)
1. the method for clamping and anchoring high strength composite is characterized in that the step of this method is as follows:
The first step: the shape of selecting waveform toothholder tool anchor
(1) strengthens or during the stabilization works structure
When with high strength composite enhancing or stabilization works structure, should be according to the shape of the engineering structure that is enhanced or reinforces, the waveform toothholder tool anchor that selection adapts with it, and the last waveform tooth plate or the following waveform tooth plate of selected anchor clamps anchor are fixedly set in the engineering structure surface that is enhanced or is reinforced, perhaps the waveform teeth groove that the shape of reservation and selected waveform toothholder tool anchor matches on the engineering structure surface that is enhanced or reinforces;
When (2) making the large-tonnage stayed structure
When making the drag-line member, can select the waveform toothholder tool anchor of parallel type or fan-shaped formula with high strength composite;
And the quantity that is chosen in the corrugated sheet of being set up between the upper and lower waveform tooth plate of waveform toothholder tool anchor of putting more energy into according to the thickness and the number of plies of high strength composite sheet material;
Second step: carry out surface treatment and brushing Bond
Wavy surface to the upper and lower waveform tooth plate of selected waveform toothholder tool anchor and the corrugated sheet of putting more energy into eliminates rust, polishing and cleaning, and at its external coating Bond;
The 3rd step: the pretreatment of composite material sheet
(1) when composite material sheet is cloth material without the dipping binding resin, must earlier it fully be flooded binding resin, and grinding compacting;
(2) when composite material sheet when having flooded the sheet material of binding resin and solidifying, it is tabular earlier its end to be processed into the waveform that the wavy surface with waveform toothholder tool anchor matches, and thereon, lower surface brushing Bond;
The 4th step: place composite material sheet
(1) when composite material sheet is thicker, the composite material sheet layering is positioned over carries out the last waveform tooth plate of surface treatment and brushing Bond, the corrugated sheet of putting more energy into and down between the waveform tooth plate;
(2) when composite material sheet is thin, composite material sheet directly is positioned between the upper and lower waveform tooth plate that carries out surface treatment and brushing Bond;
The 5th step: compress and lock
Installation compresses and locking device, and upper and lower waveform tooth plate is applied impacting force and locking;
The 6th step: natural Health preservation.
2. according to the method for described clamping of claim 1 and anchoring high strength composite, it is characterized in that size and number, should decide according to the size of the engineering structure that is enhanced or reinforces or the tonnage of drag-line at waveform toothholder tool anchor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03117814 CN1252393C (en) | 2003-04-29 | 2003-04-29 | Method of clamping and anchoring high strength composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03117814 CN1252393C (en) | 2003-04-29 | 2003-04-29 | Method of clamping and anchoring high strength composite material |
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| Publication Number | Publication Date |
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| CN1514141A CN1514141A (en) | 2004-07-21 |
| CN1252393C true CN1252393C (en) | 2006-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03117814 Expired - Fee Related CN1252393C (en) | 2003-04-29 | 2003-04-29 | Method of clamping and anchoring high strength composite material |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6066670B2 (en) * | 2012-11-02 | 2017-01-25 | キヤノン株式会社 | Sheet processing apparatus and image forming apparatus |
| CN103061415B (en) * | 2013-01-25 | 2015-07-08 | 东南大学 | Gluing composite connection joint and gluing composite connection method for FRP (fiber reinforced polymer) section and barbed plates |
| CN105714695A (en) * | 2016-02-18 | 2016-06-29 | 沈阳建筑大学 | Anchoring structure for reinforcing T beam FRP |
| CN106404564A (en) * | 2016-09-28 | 2017-02-15 | 苏州大学 | Bursting device |
| CN113059226A (en) * | 2021-03-29 | 2021-07-02 | 汤爱国 | Automatic cutting processing machine and cutting method for galvanized color steel plate |
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