CN101864725A - FRP (Fiber Reinforce Plastic) tendon and steel strand connector and compound stay cable - Google Patents
FRP (Fiber Reinforce Plastic) tendon and steel strand connector and compound stay cable Download PDFInfo
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- CN101864725A CN101864725A CN 201010229116 CN201010229116A CN101864725A CN 101864725 A CN101864725 A CN 101864725A CN 201010229116 CN201010229116 CN 201010229116 CN 201010229116 A CN201010229116 A CN 201010229116A CN 101864725 A CN101864725 A CN 101864725A
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Abstract
The invention discloses an FRP (Fiber Reinforce Plastic) tendon and steel strand connector capable of improving the processing yield and the mounting survival rate and a compound stay cable. The connector comprises an FRP tendon bonding piece and a steel strand end connecting piece provided with a through hole, and a steel strand anchoring piece used for anchoring with the steel strand is arranged between the connecting piece and the FRP tendon bonding piece, wherein the connecting piece and the FRP tendon bonding piece are fixedly connected by using a hollow connecting piece with a filling cavity accommodating the inner end of the steel strand end connecting piece, the inner end of the FRP tendon bonding piece and the steel strand anchoring piece; and the hollow connecting piece is also provided with a data line lead-out hole. The compound stay cable comprises a section of FRP tendon, and both axial sides of the FRP tendon are respectively connected with a section of steel strand through the connector, both end heads of the FRP tendon are respectively positioned in the through holes of corresponding FRP tendon bonding pieces; the through holes are filled with bonding materials; the two sections of steel strands respectively pass through corresponding steel strand end connecting pieces and are anchored on corresponding steel strand anchoring pieces; and the filling cavity is filled with a bonding material. The invention can be applied to the technical field of intelligent monitoring of large bridge stay cables or internal hanger force.
Description
Technical field
The present invention relates to a kind of device that FRP muscle material and steel strand reliably are connected and use this kind connector to form the technology of compound stay cable.
Background technology
At present, drag-line and suspension rod are the crucial primary structure members of modern large-span suspension bridge, cable stayed bridge and lower bearing arch bridge, and its duty is to judge whether integral bridge is in the main determining factor of normal condition.The regular disease of traditional bridge checks that means are oversize owing to the assay intervals time, powerless to the strick precaution of burst security incident, can not adapt to the management and the maintenance of such large bridge.
Is a kind of new technology of bridge cable internal force state being carried out long-term real-time monitoring with the optical fiber grating sensing element with the smart stay cable that fibrous composite that is FRP combine with base material, it also is the research focus of present bridge engineering circle and academia, but hundreds of easily rice of the drag-line length of large bridge even last km, the cost that replaces high strength steel strand with isometric full FRP smart stay cable is very high, and the technical matters requirement to processing of FRP smart stay cable and installation is high, causes its processed finished products rate and installation survival rate lower.
The FRP muscle is general to adopt the many FRP rods that embedded the optical fiber grating sensing element to tighten up the formation bundle with heat-shrink tube.
Summary of the invention
In order to overcome existing FRP smart stay cable cost height, processed finished products rate and the lower deficiency of survival rate to be installed, the compound stay cable that technical problem to be solved by this invention provides a kind of FRP muscle and steel strand connector and uses this kind connector to form, use this connector, the steel strand at one section FRP muscle and its two ends reliably can be connected into the composite intelligent drag-line, its function and tensile strength are suitable with the FRP smart stay cable, but the processed finished products rate of drag-line and installation survival rate can significantly improve.
FRP muscle and steel strand connector, comprise steel hinge line end connection and FRP muscle bonding piece, the steel hinge line end connection is provided with by its outer end to inner through hole, also be provided with on the FRP muscle bonding piece by its outer end to inner through hole, between the inner of the inner of steel hinge line end connection and FRP muscle bonding piece, be provided for the steel hinge line anchoring piece that is anchored with steel hinge line, hollow connector with filling chamber is fixedlyed connected the steel hinge line end connection with FRP muscle bonding piece, described filling chamber has held the inner of steel hinge line end connection and the inner and described steel hinge line anchoring piece of FRP muscle bonding piece, also is provided with the data wire fairlead on the described hollow connector.
One section of the approaching the inner of through hole on the described FRP muscle bonding piece is bellmouth, and the bigger diameter end of this bellmouth is inner.
Through hole on the described FRP muscle bonding piece is provided with the buffer gasket that is complementary with through-hole diameter near in a section of outer end.
All have between the inner of the inner of described steel hinge line anchoring piece and steel hinge line end connection and FRP muscle bonding piece at interval.
Described hollow connector is provided with pressure injection hole and venthole, and described filling is filled with binding material in the chamber.
Described hollow connector outer wall is provided with the data wire deck.
Described hollow connector is correspondingly provided with external thread section for female sleeve is set on described steel hinge line end connection and the FRP muscle bonding piece.
Described hollow connector is connected with FRP muscle bonding piece pin with described steel hinge line end connection respectively.
Compound stay cable, comprise one section FRP muscle, the axial both sides of this section FRP muscle respectively are connected with one section steel hinge line by two described " FRP muscle and steel strand connectors ", the two ends of this section FRP muscle lays respectively in the through hole of corresponding FRP muscle bonding piece, all be filled with binding material in the through hole, two sections steel hinge lines pass corresponding steel hinge line end connection respectively and also are anchored on the steel hinge line anchoring piece of correspondence, and described filling all is filled with binding material in the chamber.
Length≤the 3m of described FRP muscle.
The invention has the beneficial effects as follows: each parts all can adopt existing maturation process processing, and is easy to assembly, technological requirement is low; Drawn calibration experimental examination and engineering practical application prove, connector reliable operation, stable performance, adopt the present invention to replace the full FRP smart stay cable isometric with it, cost-saved, as to reduce processing and the FRP smart stay cable is installed technical matters requirement improves yield rate and survival rate is installed.
Description of drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is the schematic diagram that the steel hinge line end connects steel part.
Fig. 3 is the schematic diagram of FRP muscle bonding piece.
Fig. 4 is the schematic diagram of hollow connector.
Fig. 5 is the schematic diagram of compound stay cable.
Be labeled as 1-steel hinge line end connection, 2-steel hinge line anchoring piece, 3-hollow connector, 4-FRP muscle bonding piece among the figure, the 5-buffer gasket, 6-pin, 7-data wire fairlead, 8-data wire deck, 9-data wire, 10-filling chamber, 11-outer end, 12-the inner, 13-steel hinge line, 14-FRP muscle, the 15-steel hinge line, 16-pin, 17-binding material, 18-pin-and-hole, the 19-pin-and-hole, 20-pin-and-hole, 21-pin-and-hole, 31-venthole, the 40-bellmouth, 41-outer end, 42-the inner, 43-binding material.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, FRP muscle of the present invention and steel strand connector, comprise steel hinge line end connection 1 and FRP muscle bonding piece 4, steel hinge line end connection 1 is provided with by the through hole of its outer end 11 to the inner 12, also be provided with on the FRP muscle bonding piece 4 by the through hole of its outer end 41 to the inner 42, between the inner 42 of the inner 12 of steel hinge line end connection 1 and FRP muscle bonding piece 4, be provided for the steel hinge line anchoring piece 2 that is anchored with steel hinge line 13, hollow connector 3 with filling chamber 10 is fixedlyed connected steel hinge line end connection 1 with FRP muscle bonding piece 4, described filling chamber 10 has held the inner 12 of steel hinge line end connection 1 and the inner 42 and the described steel hinge line anchoring piece 2 of FRP muscle bonding piece 4, also is provided with data wire fairlead 7 on the described hollow connector 3.Use this FRP muscle and steel strand connector, FRP muscle and steel hinge line reliably can be connected into compound stay cable, this kind compound stay cable had both kept the real-time monitoring and control of full FRP smart stay cable, had cost advantage again, and the processed finished products rate is higher with the installation survival rate.
As shown in figures 1 and 3, in order to improve anchoring ability, one section of the through hole on the described FRP muscle bonding piece 4 approaching inner 42 is bellmouth 40, and the bigger diameter end of this bellmouth 40 is inner.
As shown in Figure 1, consider that the horizontal shear strength of FRP muscle is low, the through hole on described FRP muscle bonding piece 4 is provided with the buffer gasket 5 that is complementary with through-hole diameter near in a section of outer end 41, avoids stress to concentrate and causes fortifying fibre fracture in the FRP muscle.
As Fig. 1 and shown in Figure 5, all have between the inner 42 of the inner 12 of described steel hinge line anchoring piece 2 and steel hinge line end connection 1 and FRP muscle bonding piece 4 at interval, so that hold filler and FRP muscle termination and data wire 9.
As shown in figures 1 and 3, described hollow connector 3 is provided with pressure injection hole 31 and venthole, can utilize described data wire fairlead 7 as venthole, when constructing at the scene, should be in described filling chamber 10 filling binding material 17.
As Fig. 1, Fig. 3 and shown in Figure 5, described hollow connector 3 outer walls are provided with data wire deck 8, make things convenient for drawing and protecting of sensor optical cable that is data wire 9.
As Fig. 1, Fig. 3 and shown in Figure 5, described hollow connector 3 is correspondingly provided with external thread section for female sleeve is set on described steel hinge line end connection 1 and the FRP muscle bonding piece 4, utilizes screw thread to be fastenedly connected.
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 5, locate when further improving the reliability that connects and ease of assembly, also described hollow connector 3 can be connected with FRP muscle bonding piece 4 pins with described steel hinge line end connection 1 respectively, pin-and-hole 21 on pin-and-hole 18 on the steel hinge line end connection 1 and the hollow connector 3 is corresponding and be complementary with pin 6, and pin-and-hole on the pin-and-hole 19 on the FRP muscle bonding piece 4 and the hollow connector 3 20 is corresponding and be complementary with pin 16.
As shown in Figure 5, compound stay cable of the present invention, comprise one section FRP muscle 14, this section FRP muscle 14 axial both sides respectively are connected with one section steel hinge line 13,15 by two described " FRP muscle and steel strand connectors ", the two ends of this section FRP muscle 14 lays respectively in the through hole of corresponding FRP muscle bonding piece 4, all be filled with binding material 43 in the through hole, two sections steel hinge lines 13,15 pass corresponding steel hinge line end connection 1 respectively and also are anchored on the steel hinge line anchoring piece 2 of correspondence, all are filled with binding material 17 in the described filling chamber 10.
Usually, length according to drag-line in the engineering practice, the length of described FRP muscle 14 gets final product about 1.5m, it is long generally to be no more than 3m, its sensor is realized the pulling force monitoring function in can having guaranteed to use, and simultaneously, the length that the FRP muscle is 14 sections is oversize, then its processed finished products rate and installation survival rate can descend, and the advantage of using compound stay cable of the present invention is not obvious.
Embodiment:
As Fig. 1～shown in Figure 5, whole drag-line is anchored 1, two FRP muscle of steel part bond 4 by the Embedded FRP muscle of one section optical fiber grating sensing 14, two sections 13,15, two steel strand of high strength steel strand and two hollow connectors 3 are formed.The length of steel strand 13,15 is determined according to actual needs.
During making, at first be about FRP rod that 150cm embedded the optical fiber grating sensing element with 4～7 and tighten up with heat-shrink tube and form a branch of FRP muscle, the choosing of FRP muscle cross section should be satisfied rupture pull force simultaneously and be not less than the requirement that 200KN and limiting strain are not more than 5000 μ ε.One section of through hole on the FRP muscle bond 4 approaching inner 42 is bellmouth 40, the bigger diameter end of this bellmouth 40 is inner, FRP cluster two ends enter the part of bellmouth 40 should be with the winding asperities, described asperities can the FRP muscle during in pyrocondensation to its peripheral resin material extrusion molding, the FRP rod of FRP cluster termination is the shape that scatters slightly, to strengthen the anti-pulling ability, significantly improve its anchoring ability, and infusion and binding material 43 and anchoring in the through hole on FRP muscle bond 4, binding material 43 is if adopt resin, then, produce very strong adhesion stress between the two because the base material and the binding material of FRP muscle are all resin.Consider that the horizontal shear strength of FRP cluster is low, the through hole on described FRP muscle bonding piece 4 is provided with the buffer gasket 5 that is complementary with through-hole diameter near in a section of outer end 41, avoids stress to concentrate and causes fortifying fibre fracture in the FRP muscle.
Steel strand anchoring piece 2 for example can be made of common OVM squash type fixed end P type anchor head and steel block.
The outer wall of FRP muscle bond 4 and steel strand end connection 1 all is processed as trapezoidal external screw thread, can be by being assembled into one as the female sleeve of the processing of hollow connector 3; On described sleeve and FRP muscle bonding piece 4 and the steel strand end connection 1 pin-and-hole is set all, so that when assembling location; Establish data wire deck 8 in the sleeve outer wall, make things convenient for drawing and protecting of data wire 9.
For guaranteeing crudy and bond and anchor property, the bond-anchorage technology of the making of FRP muscle 14 and FRP muscle bonding piece 4 thereof should machine in factory, and carries out extensibility and test surely with check anchoring property and nominal light fiber grating sensor.When carrying out tension test, hollow connector 3 only adopts with FRP muscle bonding piece 4 and steel strand end connection 1 and is threaded, wouldn't infusion and binding material in the filling cavity 10.Steel strand anchoring piece 2 is anchored with steel strand in bridge construction scene side, again 3 assemblings of hollow connector are got on after the anchor, building-site FRP muscle be connected with steel hinge line finish after, pressure injection binding material 17 again in the filling cavity 10 of hollow connector 3 is reserved with pressure injection hole 31 and venthole on the hollow connector 3.
The binding material 43,17 that uses in FRP muscle bonding piece 4 and the filling cavity 10 can be determined than choosing by stretch test result, generally use resin-bonded material, as epoxy resin, epoxy resin mortar, epoxy iron sand etc.
Claims (10)
1.FRP muscle and steel strand connector, it is characterized in that: comprise steel hinge line end connection (1) and FRP muscle bonding piece (4), steel hinge line end connection (1) is provided with by its outer end (11) through hole to inner (12), also be provided with on the FRP muscle bonding piece (4) by its outer end (41) through hole to inner (42), between the inner (42) of the inner (12) of steel hinge line end connection (1) and FRP muscle bonding piece (4), be provided for the steel hinge line anchoring piece (2) that is anchored with steel hinge line (13), hollow connector (3) with filling chamber (10) is fixedlyed connected steel hinge line end connection (1) with FRP muscle bonding piece (4), described filling chamber (10) has held the inner (12) of steel hinge line end connection (1) and the inner (42) and the described steel hinge line anchoring piece (2) of FRP muscle bonding piece (4), also is provided with data wire fairlead (7) on the described hollow connector (3).
2. FRP muscle as claimed in claim 1 and steel strand connector is characterized in that: one section of the through hole on the described FRP muscle bonding piece (4) approaching inner (42) is bellmouth (40), and the bigger diameter end of this bellmouth (40) is inner.
3. FRP muscle as claimed in claim 1 and steel strand connector is characterized in that: the through hole on the described FRP muscle bonding piece (4) is provided with the buffer gasket (5) that is complementary with through-hole diameter near in outer end (41) one section.
4. as claim 1,2 or 3 described FRP muscle and steel strand connectors, it is characterized in that: all have between the inner (12) of described steel hinge line anchoring piece (2) and steel hinge line end connection (1) and the inner (42) of FRP muscle bonding piece (4) at interval.
5. as claim 1,2 or 3 described FRP muscle and steel strand connectors, it is characterized in that: described hollow connector (3) is provided with pressure injection hole and venthole (31), is filled with binding material (17) in the described filling chamber (10).
6. as claim 1,2 or 3 described FRP muscle and steel strand connectors, it is characterized in that: described hollow connector (3) outer wall is provided with data wire deck (8).
7. as claim 1,2 or 3 described FRP muscle and steel strand connectors, it is characterized in that: described hollow connector (3) is correspondingly provided with external thread section for female sleeve is set on described steel hinge line end connection (1) and the FRP muscle bonding piece (4).
8. FRP muscle as claimed in claim 7 and steel strand connector is characterized in that: described hollow connector (3) is connected with FRP muscle bonding piece (4) pin with described steel hinge line end connection (1) respectively.
9. adopt claim 1, the compound stay cable of 2 or 3 described " FRP muscle and steel strand connectors ", it is characterized in that: comprise one section FRP muscle (14), this section FRP muscle (14) axially respectively is connected with one section steel hinge line (13 by two described " FRP muscle and steel strand connectors " in both sides, 15), the two ends of this section FRP muscle (14) lays respectively in the through hole of corresponding FRP muscle bonding piece (4), all be filled with binding material (43) in the through hole, two sections steel hinge lines (13,15) pass corresponding steel hinge line end connection (1) and anchor respectively on the steel hinge line anchoring piece (2) of correspondence, all be filled with binding material (17) in the described filling chamber (10).
10. compound stay cable as claimed in claim 9 is characterized in that: the length≤3m of described FRP muscle (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102291164A CN101864725B (en) | 2010-07-16 | 2010-07-16 | FRP (Fiber Reinforce Plastic) tendon and steel strand connector and compound stay cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102291164A CN101864725B (en) | 2010-07-16 | 2010-07-16 | FRP (Fiber Reinforce Plastic) tendon and steel strand connector and compound stay cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101864725A true CN101864725A (en) | 2010-10-20 |
| CN101864725B CN101864725B (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102291164A Expired - Fee Related CN101864725B (en) | 2010-07-16 | 2010-07-16 | FRP (Fiber Reinforce Plastic) tendon and steel strand connector and compound stay cable |
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| Country | Link |
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| CN (1) | CN101864725B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015320A (en) * | 2012-12-24 | 2013-04-03 | 东南大学 | Stay cable device for kilometric cable stayed bridge and mounting method thereof |
| CN103244160A (en) * | 2013-05-20 | 2013-08-14 | 河北联合大学 | Detachable reused single-pore clamping piece type anchor rope anchorage device |
| CN104100049A (en) * | 2014-07-18 | 2014-10-15 | 济南大学 | FRP rib plastic hinge connector for concrete structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0896108A2 (en) * | 1997-08-05 | 1999-02-10 | Dyckerhoff & Widmann Aktiengesellschaft | Method for installing and tensioning a free tendon, and device for carrying out the method |
| CN1253198A (en) * | 1998-11-09 | 2000-05-17 | 柳州欧维姆建筑机械有限公司 | Method for suspending guys of twisted steel cable for cable stayed bridge |
| CN200964565Y (en) * | 2006-08-01 | 2007-10-24 | 方志 | Adhesion type anchor for fiber-reinforced plastic dragline |
| CN201738241U (en) * | 2010-07-16 | 2011-02-09 | 四川省交通厅公路规划勘察设计研究院 | FRP rib and steel strand connector and composite inhaul cable |
-
2010
- 2010-07-16 CN CN2010102291164A patent/CN101864725B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0896108A2 (en) * | 1997-08-05 | 1999-02-10 | Dyckerhoff & Widmann Aktiengesellschaft | Method for installing and tensioning a free tendon, and device for carrying out the method |
| CN1253198A (en) * | 1998-11-09 | 2000-05-17 | 柳州欧维姆建筑机械有限公司 | Method for suspending guys of twisted steel cable for cable stayed bridge |
| CN200964565Y (en) * | 2006-08-01 | 2007-10-24 | 方志 | Adhesion type anchor for fiber-reinforced plastic dragline |
| CN201738241U (en) * | 2010-07-16 | 2011-02-09 | 四川省交通厅公路规划勘察设计研究院 | FRP rib and steel strand connector and composite inhaul cable |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015320A (en) * | 2012-12-24 | 2013-04-03 | 东南大学 | Stay cable device for kilometric cable stayed bridge and mounting method thereof |
| CN103015320B (en) * | 2012-12-24 | 2015-01-28 | 东南大学 | Stay cable device for kilometric cable stayed bridge and mounting method thereof |
| CN103244160A (en) * | 2013-05-20 | 2013-08-14 | 河北联合大学 | Detachable reused single-pore clamping piece type anchor rope anchorage device |
| CN104100049A (en) * | 2014-07-18 | 2014-10-15 | 济南大学 | FRP rib plastic hinge connector for concrete structure |
| CN104100049B (en) * | 2014-07-18 | 2016-03-23 | 济南大学 | For concrete structure FRP muscle plastic hinge connector |
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| Publication number | Publication date |
|---|---|
| CN101864725B (en) | 2011-12-28 |
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Owner name: HIGHWAY PLANNING SURVEYING AND DESIGNING INSTITUTE Free format text: FORMER OWNER: INST OF HIGHWAY SURVEY AND DESIGN, SICHUAN COMMUNIATION OFFICE Effective date: 20110921 |
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Effective date of registration: 20110921 Address after: 610041 Wuhou District, Chengdu Wuhou Temple street, No. 1, No. Applicant after: Sichuan Department of Transportation Highway Planning, Prospecting and Design Research Institute Address before: 610041 No. 1, Wuhou Temple street, Chengdu, Sichuan Applicant before: Inst of Highway Survey and Design, Sichuan Communiation Office |
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Granted publication date: 20111228 Termination date: 20120716 |