CN1203241C - Construction method of prestressing force stretching high strength composite material and anchoring - Google Patents
Construction method of prestressing force stretching high strength composite material and anchoring Download PDFInfo
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- CN1203241C CN1203241C CN 02128047 CN02128047A CN1203241C CN 1203241 C CN1203241 C CN 1203241C CN 02128047 CN02128047 CN 02128047 CN 02128047 A CN02128047 A CN 02128047A CN 1203241 C CN1203241 C CN 1203241C
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- tooth plate
- teeth groove
- anchoring
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- 239000002131 composite material Substances 0.000 title claims abstract description 46
- 238000004873 anchoring Methods 0.000 title claims abstract description 23
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000001680 brushing effect Effects 0.000 claims description 14
- 238000004321 preservation Methods 0.000 claims description 7
- 230000006641 stabilisation Effects 0.000 claims description 6
- 238000011105 stabilization Methods 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 230000010412 perfusion Effects 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 18
- 229910052799 carbon Inorganic materials 0.000 description 18
- 239000003795 chemical substances by application Substances 0.000 description 16
- 239000004744 fabric Substances 0.000 description 16
- 238000012360 testing method Methods 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 3
- 239000011151 fibre-reinforced plastic Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Reinforcement Elements For Buildings (AREA)
Abstract
The present invention relates to a construction method for prestress tensioning and anchoring of a high strength composite material, which belongs to the construction method for a reinforcement civil engineering structure of a high strength composite material, particularly to the technical field of the prestress tensioning and anchoring of the high strength composite material. The invention has the advantages of simple construction process, convenient operation, high reliability for the prestress tensioning and anchoring of composite material, favorable effect on engineering structure reinforcement, strong adaptability to the surface of the engineering structure, and flexible and convenient application. The construction method of the present invention can produce the engineering structure which has the characteristics of light self-weight, small size, large rigidity, strong bearing capacity, large spanning capacity, etc. The present invention can be extensively used in engineering projects and part of machine manufacture industry, such as bridges, industrial factory buildings with long span, hangars, docks, undergrounds, light rails, large-sized handling appliances, ships, automobiles, etc. The present invention is a simplest, most effective, most reliable and most economical construction method for reinforcing the civil engineering structure.
Description
One, technical field
The invention belongs to the job practices that high strength composite strengthens or reinforce civil engineering structure, particularly prestressing force stretching high strength composite material and anchoring field.
Two, background technology
Along with the progress of development of science and technology and society, people have proposed new requirement to civil construction project, and, good rigidity slim and graceful as claimed structure, span ability is big, supporting capacity is strong etc.High strength composite (as carbon fibre reinforced plastic, high molecular polymerization fibres plasticizers, glass fiber reinforced plastics etc.) has from heavy and light, intensity height, antifatigue, characteristic such as corrosion-resistant, it is the ideal material that strengthens or reinforce civil engineering structure (as steel work, wooden construction, concrete structure etc.), but can not carry out prestressed stretch-draw, connection and anchoring with existing method because of the shear behavior of composite material is relatively poor, so can not give full play to the premium properties of high strength composite.Though also have composite material made twisted wire, in the certain-length scope of composite material twisted wire two ends, apply soft alloy again, shear behavior when improving its stretch-draw and anchoring, but this technology is very complicated, the cost height, the poor reliability of stretch-draw and anchoring, inconvenience is generally applied in engineering structures.Be exactly number of patent application be with special equipment the method for the direct stretch-draw in two ends of carbon cloth to be carried out prestressed reinforcement to structure described in the invention of 99120617.7 " carbon cloth prestress reinforced construction method and special equipments thereof ", but the job practices that should invent is little to the stretching force of carbon cloth, only be adapted to carbon cloth number of plies situation seldom, and this method is when the stretch-draw carbon cloth, carbon cloth is easy to generate owing to the inhomogeneous stressed accident that ruptures, so its functional reliability is low; Secondly, the surface that this invention adopts the method for two ends stretch-draw to require to be reinforced is the plane, and curved surface or folding face are inapplicable; In addition, the tensioning equipment complexity of this invention, little, the poor reliability of pulling force also have higher requirement to the operating space of stretching construction, for example, in the narrow corner of construction, need leave the working space of its tensioning equipment, this segment space just can't affixing carbon fabric so, and practicality is limited.
Three, summary of the invention
The purpose of this invention is to provide the job practices of a kind of prestressing force stretching high strength composite material and anchoring, construction technology is simple, the reliability height of prestressed stretch-draw and anchoring, and cost is also cheaper.Adopt job practices of the present invention to strengthen or the reinforcing civil engineering structure, can make full use of the premium properties of high strength composite, improve the supporting capacity of engineering structures, and prolong its application life.
The object of the present invention is achieved like this: a kind of prestressing force stretching high strength composite material and anchoring construction method, it mainly is the waveform tooth feature of utilizing wave mode toothholder tool anchor, sheet material to high strength composite (as carbon fibre reinforced plastic, high molecular polymer fibre reinforced plastics, glass fiber reinforced plastics etc.), adopt that two ends are fixed, the job practices of intermediate lateral stretch-draw and anchoring strengthens or reinforce civil engineering structure (as steel work, wooden construction, concrete structure etc.), its construction sequence is as follows:
1. affixed waveform tooth plate down or reservation waveform teeth groove
Earlier with the following waveform tooth plate of waveform toothholder tool anchor fixedly connected (as weld, anchor into, mode such as build-in) in the surface (being limited to plane, convex surface, sectional plan, segmentation convex surface and combinatorial surface thereof) of the engineering structures that is enhanced or reinforces, or in the surface of the civil engineering structure that is enhanced or reinforces reservation waveform teeth groove.The wavy surface of the waveform teeth groove of the wavy surface of following waveform tooth plate or reservation should be tangent with the engineering structures surface that is enhanced or reinforces, and connect into an integral body smoothly, and, one or more bolt is set respectively at the place, four angles or the both ends of the waveform teeth groove of each affixed following waveform tooth plate or reservation.The affixed following waveform tooth plate or the waveform teeth groove of reservation are distributed in and are enhanced or the two ends and the centre of stabilization works body structure surface, keep at a certain distance away therebetween.Number, shape and the spacing distance thereof of the affixed following waveform tooth plate or the waveform teeth groove of reservation are according to being enhanced or the concrete conditions such as surface configuration, size and desired prestressed stretch-draw degree of stabilization works structure are decided;
2. carry out surfacing
To the wavy surface of the waveform teeth groove of the wavy surface of affixed following waveform tooth plate or reservation and the engineering structures surface that needs to paste composite material is cleaned, surfacing such as smooth;
3. composite material is carried out tensioning and two ends are fixed
On the wavy surface of the wavy surface of the following waveform tooth plate that the both ends after passing through surfacing are affixed or the waveform teeth groove of reservation, the brushing cementing agent, and on the waveform teeth groove of following waveform tooth plate that the both ends that after the tensioning of high strength composite sheet material its two ends sticked on brushing cementing agent are affixed or reservation, use the last waveform tooth plate of the waveform toothholder tool anchor of process surfacing and brushing cementing agent again, fixedly connected with the affixed following waveform tooth plate or the waveform teeth groove of reservation by bolt, thus the high strength composite sheet material anchoring that will paste and form two anchor points.For being enhanced or the stabilization works body structure surface is a closo, overlapping being anchored at of composite material sheet two ends can be formed an anchor point together.Natural Health preservation then.
4. the fixing composite material in two ends is carried out intermediate lateral stretch-draw and anchoring
Again on the composite material sheet at the wavy surface of the waveform teeth groove of the wavy surface of the affixed following waveform tooth plate of midfeather certain distance or reservation and two ends anchoring, soffit and need are pasted the engineering structures external coating cementing agent of composite material, and then with the last waveform tooth plate of the waveform flank of tooth through the waveform toothholder tool anchor of surface-treated and brushing cementing agent, fixedly connected with the affixed following waveform tooth plate or the waveform teeth groove of reservation by bolt, the fastening waveform tooth plate that makes by bolt, tight seamless unoccupied place combines between the waveform teeth groove of composite material sheet and following waveform tooth plate or reservation, thereby force the length of composite material sheet between two anchor points to increase, promptly rely on the fastening force of bolt to realize the fixing composite material sheet in two ends is carried out pre-stretch-draw of intermediate lateral and anchoring.When the engineering structures that is enhanced or reinforces does not require when in the composite material pretension being arranged, under not affixed centre between two anchor points at two ends the waveform tooth plate or do not reserve in the middle of the waveform teeth groove;
5. replenish and irritate the brush cementing agent and roll natural Health preservation
Again the upper and lower surface of composite material sheet and be enhanced or the interface of stabilization works structure replenishes and irritates brush cementing agent or impregnating resin, and roll composite material sheet with cylinder, it fully be impregnated in the cementing agent.Natural Health preservation then.
Construction technology of the present invention is simple, and is easy and simple to handle, and the prestressed stretch-draw of composite material and anchoring are very reliable; Again because the employing two ends are fixed, the job practices of intermediate lateral stretch-draw, so loss of prestress is little.Because composite material has from heavy and light, intensity height,, increase substantially structure bearing capacity so in enhancing or stabilization works structure, can reach under the situation that increases dead load hardly; This method is good to the surface configuration compliance of engineering structures, as plane, convex surface, sectional plan, segmentation convex surface and combinatorial surface thereof all can, applying flexible is convenient; Adopt job practices of the present invention, composite material is in the surface of structure, is convenient to monitoring, maintenance and replacing etc., and is significant to the application life of the safe handling of structure and extending structure.Adopt job practices of the present invention, can produce the engineering structures that has from heavy and light, characteristics such as size is little, rigidity is big and supporting capacity is very strong, span ability is very big, these structures can be widely used in bridge, large span industrial premises, Aircraft Hangar, dock, subway, light rail etc., also can apply to the part machine industry, as make large-scale handling appliance, steamer, automobile, or the like.Adopt job practices of the present invention existing engineering structures is reinforced to safeguard it is the most effective, most economical, the most reliable method in present all reinforcement means.For example, a large amount of steel structure bridges has all been built in countries in the world since 19th century, owing to reason such as the time is remote, a lot of bridges are badly in need of maintenance, transform or are rebuild, if adopt the present invention to reinforce maintenance, and can be under the situation that increases original structure weight hardly, increase substantially its bearing capacity, improve the functional performance of structure, the application life of extending structure, thereby the investment of saving reconstruction or rebuilding bridge greatly.
Four, description of drawings
Fig. 1 is the affixed construction schematic diagram of waveform tooth plate down of the present invention;
Fig. 2 reserves the construction schematic diagram of waveform teeth groove for the present invention;
Fig. 3 is test beam construction schematic diagram of the present invention;
Fig. 4 contrasts the girder construction schematic diagram for the present invention.
Among the figure: waveform tooth plate, 4 engineering structuress, 5 are reserved waveform teeth groove, 6 carbon cloths, 7 i iron, 8 upper flanges, 9 channel-section steels, 10 lower wing plates, 11 bolts on 1 time waveform tooth plate, 2 composite materials, 3.
Five, the specific embodiment
Below in conjunction with embodiment, further specify the present invention.
As shown in Figure 3, present embodiment is the job practices with carbon cloth 6 enhanced type steel compound beams.Test beam is for adding the shaped steel combining structure that weldering one channel-section steel 9 constitutes on the upper flange 8 of i iron 7.The height of shaped steel combining structure is 140 millimeters, and the width of lower wing plate 10 is 68 millimeters, and the width of channel-section steel 9 is 63 millimeters, and the length of test beam is 2 meters.Its construction sequence is as follows:
1. the following waveform tooth plate 1 of 4 waveform toothholder tool anchors of welding on the surface of test beam lower wing plate 10 requires should to make down after the welding the surperficial tangent of the wavy surface of waveform tooth plate 1 and lower wing plate 10, and connects into an integral body smoothly.Following waveform tooth plate 1 is slightly wideer than lower wing plate 10, reserves four bolt positions at the place, four angles of following waveform tooth plate.Two two ends that are welded in test beam in four following waveform tooth plates 1,800 millimeters at interval of middle two following waveform tooth plates 1;
To the surface of the waveform flank of tooth that is welded in lower wing plate 10 lip-deep four following waveform tooth plates 1 and lower wing plate 10 eliminate rust, polish, surfacing such as cleaning;
3. brushing cementing agent on the waveform flank of tooth of two following waveform tooth plates 1 that are welded in the test beam two ends, then 0.111 millimeter of 3 layers of every bed thickness, wide 65 millimeters carbon fiber cloth 6 are strained on two following waveform tooth plates 1 that are positioned over the test beam two ends by hand, and brushing cementing agent and rolling, the last waveform tooth plate 3 of the waveform toothholder tool anchor of surface-treated through cleaning etc. with the waveform flank of tooth again and brushing cementing agent is connected with following waveform tooth plate 1 by bolt, fastening nut, natural Health preservation is 20 hours then.Cementing agent produces on two waveform toothholder tool anchors that carbon cloth 6 are anchored at after the intensity test beam two ends and forms two anchor points;
4. brushing cementing agent on the wavy surface of two following waveform tooth plates 1 in the middle of the test beam and on the surface of the upper and lower surface of carbon cloth 6 and lower wing plate 10, the last waveform tooth plate 3 of the waveform toothholder tool anchor of surface treated with the waveform flank of tooth again and brushing cementing agent is connected with following waveform tooth plate by bolt, fastening nut, force carbon cloth 6 two increases of the length between the anchor point, make and produce pretension and anchoring in the carbon cloth 6;
5. replenish filling brush cementing agent and impregnating resin on the upper and lower surface of carbon cloth 6 and the surface of lower wing plate plate 10 again, and roll carbon cloth 6, carbon cloth fully be impregnated in the cementing agent with cylinder.Natural Health preservation is 24 hours then.
Then, the contrast beam to the shaped steel combining structure of the test beam that adopts the carbon cloth prestressing force enhanced type steel combining structure that job practices of the present invention makes and same size, same size under equal conditions carries out the load contrast test.Result of the test is: the ultimate load of contrast beam is about 6.8 tons, and the ultimate load of test beam can reach 9.9 tons.
Claims (1)
1. the job practices of prestressing force stretching high strength composite material and anchoring is characterized in that construction sequence is as follows:
1. affixed waveform tooth plate (1) down or reservation waveform teeth groove (5)
The following waveform tooth plate (1) of waveform toothholder tool anchor is fixedly connected in the engineering structures surface that is enhanced or reinforces, or in the engineering structures surface that is enhanced or reinforces, reserve waveform teeth groove (5), the waveform flank of tooth of the waveform flank of tooth of following waveform tooth plate (1) or reservation waveform teeth groove (5), should be tangent with the engineering structures surface that is enhanced or reinforces, and connect into an integral body smoothly, and bolt being set at the place, four angles or the both ends of each affixed following waveform tooth plate (1) or the waveform teeth groove (5) reserved, affixed following waveform tooth plate (1) or the waveform teeth groove of reserving (5) are distributed in the both ends and the centre on the engineering structures surface that is enhanced or reinforces;
2. carry out surfacing
To the wavy surface of the waveform teeth groove (5) of the wavy surface of affixed following waveform tooth plate (1) or reservation and the engineering structures surface that will paste composite material, clean, flat surface handles;
3. composite material is carried out tensioning and fixing two ends
At brushing cementing agent on the wavy surface of the waveform teeth groove (5) of the wavy surface of the fixing following waveform tooth plate (1) in the both ends after the surfacing or reservation, then with composite material (6) tensioning, on the waveform teeth groove (5) that its two ends is sticked on the affixed following waveform tooth plate (1) in the both ends of brushing cementing agent or reserve, use the last waveform tooth plate (3) of the waveform toothholder tool anchor of process surfacing and brushing cementing agent again, fixedly connected with following waveform tooth plate (1) or reservation waveform teeth groove (5) by bolt, composite material (6) is anchored on two anchor points;
4. the fixing composite material in two ends is carried out centre stretch-draw and anchoring
Again on the wavy surface of the waveform teeth groove (5) of the wavy surface of the affixed following waveform tooth plate (1) in centre or reservation, after the upper and lower surface of the composite material (6) of the own anchoring in two ends and the engineering structures surface that will paste composite material be coated with and irritate cementing agent, again with the last waveform tooth plate (3) of the waveform flank of tooth through the waveform toothholder tool anchor of surfacing and brushing cementing agent, fixedly connected with following waveform tooth plate by bolt, rely on the fastening force of bolt that the fixing composite material (6) in two ends is carried out intermediate lateral stretch-draw and anchoring;
5. replenish and irritate the brush cementing agent, roll and natural Health preservation
Again on the upper and lower surface of composite material (6) and be enhanced or the interface of stabilization works structure replenishes perfusion brushing cementing agent or impregnating resin, and roll composite material (6), it fully be impregnated in the cementing agent, then natural Health preservation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02128047 CN1203241C (en) | 2002-12-13 | 2002-12-13 | Construction method of prestressing force stretching high strength composite material and anchoring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02128047 CN1203241C (en) | 2002-12-13 | 2002-12-13 | Construction method of prestressing force stretching high strength composite material and anchoring |
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| CN1415826A CN1415826A (en) | 2003-05-07 |
| CN1203241C true CN1203241C (en) | 2005-05-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832033A (en) * | 2010-04-08 | 2010-09-15 | 李青松 | Strengthening method for armoured concrete slab |
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| CN100476122C (en) * | 2003-09-15 | 2009-04-08 | 邱则有 | Light moulding bed component for cast-in-situ concrete |
| CN100366845C (en) * | 2005-05-10 | 2008-02-06 | 田安国 | Method for strengthening construction unit using high strength fibre cloth |
| CN101736912B (en) | 2009-12-03 | 2012-05-09 | 吴智深 | Anchorage method based on technique of bonding and reinforcement outside prestressed fiber cloth |
| CN108119168A (en) * | 2017-12-29 | 2018-06-05 | 青岛林川工程技术咨询有限公司 | A kind of device of the first branch steel arch-shelf shear stability of raising |
| CN108169020A (en) * | 2018-01-22 | 2018-06-15 | 西安建筑科技大学 | The stretch-draw anchor experimental provision and method of a kind of pre-stressed carbon fiber plate reinforcing steel beam |
| CN110017034B (en) * | 2019-04-28 | 2021-09-03 | 四川大学 | Mounting method of prestressed carbon fiber tensioning and anchoring device for resisting fatigue of beam |
| CN110468643B (en) * | 2019-07-03 | 2022-03-15 | 中铁十局集团第五工程有限公司 | Fixing structure and fixing method of slope geomembrane |
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2002
- 2002-12-13 CN CN 02128047 patent/CN1203241C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832033A (en) * | 2010-04-08 | 2010-09-15 | 李青松 | Strengthening method for armoured concrete slab |
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| CN1415826A (en) | 2003-05-07 |
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Effective date of registration: 20170531 Address after: Northern New Chongqing 401120 ring Lake cloud Street No. 12 building 16 2-8-1 Patentee after: Chongqing Dali Cable Technology Co., Ltd. Address before: 400045 No. 83 Shapingba street, Shapingba District, Chongqing Patentee before: Zhuo Jing |
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