CN102251474A - Frictional anchorage device applied to fibre reinforced composite cables - Google Patents
Frictional anchorage device applied to fibre reinforced composite cables Download PDFInfo
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- CN102251474A CN102251474A CN 201110105864 CN201110105864A CN102251474A CN 102251474 A CN102251474 A CN 102251474A CN 201110105864 CN201110105864 CN 201110105864 CN 201110105864 A CN201110105864 A CN 201110105864A CN 102251474 A CN102251474 A CN 102251474A
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Abstract
The invention discloses a frictional anchorage device applied to fibre reinforced composite cables. The frictional anchorage device comprises a rack, wherein a plurality of fixed shafts on which fibre reinforced composite cable are wound, and a spiral pressure fastening device used for pressing and fastening the tail ends of the fibre reinforced composite cables is arranged behind the last fixed shaft. The frictional anchorage device has a reasonable structure and is easy for installation and anchoring.
Description
Technical field
The present invention relates to a kind of ground tackle of fiber-reinforced composite material rib drag-line.
Background technology
Cable stayed bridge main span maximum has reached the logical bridge of 1088m(Soviet Union in the world at present), asymptotic its operating limit of the wirerope drag-line of employing.Because along with span continue increase considerably, the proportion of the weight of wirerope drag-line in the load of bridge will obviously increase.Advantage such as carbon fibre reinforced composite (CFRP) muscle has light weight, intensity height, corrosion-resistant, endurance, underrelaxation, solenoid isolation is good and damping performance is good has good application prospects as the powerful drag-line of cable stayed bridge.But as the CFRP muscle drag-line of main bearing member, its bearing capacity is mainly by the Properties Control of ground tackle, rather than by the strength control of CFRP muscle itself.This is because the horizontal compressive strength and the shear strength of CFRP muscle are lower, traditional wirerope dragline anchorage will no longer be fit to the anchoring of CFRP drag-line, otherwise because the lower shearing resistance static strength of CFRP muscle and lower shearing resistance fatigue strength will cause its premature failure in the anchorage zone.This also is that CFRP muscle drag-line does not have now and can reach one of reason of extensive use in bridge engineering and general civil engineering.Therefore CFRP muscle drag-line will be applied on super-span and the super-large span cable stayed bridge, the development of reliable and effective powerful ground tackle is a urgent problem.Various countries are carrying out the research and development of CFRP muscle Special ground tackle always now, and according to the stressed operating principle of these ground tackles, they can be divided into mechanical grip formula and bond type anchorage two big classes basically.Mechanical grip formula ground tackle exists exerts pressure the stress uniformity and adds problems such as holding district's end bending fatigue in the clamp area, also there are problems such as bond regions end bending fatigue in bond type anchorage.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructurely, be easy to install the friction-type ground tackle that is applied to the fiber-reinforced composite material rib drag-line with anchoring.
Technical solution of the present invention is:
A kind of friction-type ground tackle that is applied to the fiber-reinforced composite material rib drag-line, it is characterized in that: comprise frame, the many fixed axis that install around fibrous composite muscle drag-line are set on the frame, and in the end the rear of a fixed axis is provided with the helical pressure fastener that fibrous composite muscle drag-line end is fixed.
Described fixed axis surface is the helicla flute form that cooperates with fibrous composite muscle drag-line.
Described spiral fluted width is identical with fibrous composite muscle drag-line diameter.
The two ends of described fixed axis are notch cuttype.
The helical pressure fastener is packed on the frame.
Described fixed axis two ends are fixed on the frame by hold-down nut.
The present invention is rational in infrastructure, and has following advantage:
1, can carry out anchoring to the CFRP muscle drag-line that bears huge pulling force.Need increase traditional clip type or bond type anchorage intermediate plate length or bonded areas length improve the chucking power to the fiber drag-line, and chucking power increases limited.And ground tackle of the present invention is to utilize the spiral friction of CFRP muscle drag-line to come the pulling force of balance drag-line, is known by the gentle rope friction formula of Euler, as long as twine several circles, the frictional force of drag-line becomes geometric growth more.
2, FRP muscle drag-line is met the effect that the power end very easily is subjected to lateral pressure and shearing in the anchorage zone of traditional clip type or bond type anchorage, and the horizontal compressive strength and the shear strength of FRP muscle drag-line are lower, and the lateral shear fatigue failure in use easily takes place.In ground tackle of the present invention, FRP muscle drag-line is wrapped in the helicla flute on circular shaft (fixed axis) surface, can greatly reduce the effect of lateral pressure, eliminates the effect of transverse shearing force.As long as according to FRP muscle drag-line diameter, determine suitable diameter of round spindle and process suitable helicla flute, just can guarantee that FRP muscle drag-line is wrapped in the helicla flute on circular shaft surface fully.
3, ground tackle of the present invention is installed also simpler and easy, notch cuttype circular shaft (fixed axis) can rotate and use the nut permanent position, and FRP muscle drag-line is wrapped in the helicla flute fully, and produces pretightning force, use the fixedly end of FRP muscle drag-line of helical pressure fastener at last, finish anchoring.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the A-A view of Fig. 1.
The specific embodiment
A kind of friction-type ground tackle that is applied to the fiber-reinforced composite material rib drag-line, comprise frame 1, the many fixed axis (circular shaft) 2 that install around fibrous composite muscle drag-line 5 are set on the frame, and in the end the rear of a fixed axis is provided with the helical pressure fastener 4 that fibrous composite muscle drag-line end is fixed.Described fixed axis surface is the helicla flute form that cooperates with fibrous composite muscle drag-line, and the spiral fluted width is identical with fibrous composite muscle drag-line diameter, and fibrous composite muscle drag-line installs around in helicla flute.The two ends of described fixed axis are notch cuttype.The helical pressure fastener is packed on the frame.Described fixed axis two ends are fixed on the frame by hold-down nut 3.
Claims (6)
1. friction-type ground tackle that is applied to the fiber-reinforced composite material rib drag-line, it is characterized in that: comprise frame, the many fixed axis that install around fibrous composite muscle drag-line are set on the frame, and in the end the rear of a fixed axis is provided with the helical pressure fastener that fibrous composite muscle drag-line end is fixed.
2. the friction-type ground tackle that is applied to the fiber-reinforced composite material rib drag-line according to claim 1 is characterized in that: described fixed axis surface is the helicla flute form that cooperates with fibrous composite muscle drag-line.
3. the friction-type ground tackle that is applied to the fiber-reinforced composite material rib drag-line according to claim 2 is characterized in that: described spiral fluted width is identical with fibrous composite muscle drag-line diameter.
4. according to claim 1, the 2 or 3 described friction-type ground tackles that are applied to the fiber-reinforced composite material rib drag-line, it is characterized in that: the two ends of described fixed axis are notch cuttype.
5. according to claim 1, the 2 or 3 described friction-type ground tackles that are applied to the fiber-reinforced composite material rib drag-line, it is characterized in that: the helical pressure fastener is packed on the frame.
6. according to claim 1, the 2 or 3 described friction-type ground tackles that are applied to the fiber-reinforced composite material rib drag-line, it is characterized in that: described fixed axis two ends are fixed on the frame by hold-down nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110105864 CN102251474B (en) | 2011-04-27 | 2011-04-27 | Frictional anchorage device applied to fibre reinforced composite cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110105864 CN102251474B (en) | 2011-04-27 | 2011-04-27 | Frictional anchorage device applied to fibre reinforced composite cables |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102251474A true CN102251474A (en) | 2011-11-23 |
| CN102251474B CN102251474B (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110105864 Expired - Fee Related CN102251474B (en) | 2011-04-27 | 2011-04-27 | Frictional anchorage device applied to fibre reinforced composite cables |
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| CN (1) | CN102251474B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321150A (en) * | 2013-07-04 | 2013-09-25 | 南通大学 | Pretightening-force-adjustable friction-type anchorage device applied to fiber-reinforced composite material rib inhaul cable |
| CN112064504A (en) * | 2020-09-09 | 2020-12-11 | 清华大学 | Self-anchored carbon fiber inhaul cable |
| CN115680195A (en) * | 2022-11-07 | 2023-02-03 | 东南大学 | Composite material inhaul cable anchoring method and composite material inhaul cable |
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| DE10060459A1 (en) * | 2000-09-21 | 2002-04-11 | Gert Koenig | Anchoring and coupling for fiber plates comprises clamping plates between two steel sheets serving for further anchoring |
| CN2890220Y (en) * | 2006-03-30 | 2007-04-18 | 尚守平 | Carbon fiber board anchorage device for use in civil engineering and building construction |
| CN101078286A (en) * | 2007-07-04 | 2007-11-28 | 湖南大学 | Composite anchorage used for anchoring multiple fiber reinforcement plastic bar or dragline |
| CN201704877U (en) * | 2010-04-16 | 2011-01-12 | 卓清 | Wave-shaped-gear-grip anchorage for gripping high-strength fiber thick composite material |
| CN102002911A (en) * | 2010-11-10 | 2011-04-06 | 中交公路规划设计院有限公司 | Carbon fiber cable strand inner sleeve conical bonded anchorage device |
| CN202107998U (en) * | 2011-04-27 | 2012-01-11 | 南通大学 | Friction anchorage device used for fiber reinforced composite bar dragline |
-
2011
- 2011-04-27 CN CN 201110105864 patent/CN102251474B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10060459A1 (en) * | 2000-09-21 | 2002-04-11 | Gert Koenig | Anchoring and coupling for fiber plates comprises clamping plates between two steel sheets serving for further anchoring |
| CN2890220Y (en) * | 2006-03-30 | 2007-04-18 | 尚守平 | Carbon fiber board anchorage device for use in civil engineering and building construction |
| CN101078286A (en) * | 2007-07-04 | 2007-11-28 | 湖南大学 | Composite anchorage used for anchoring multiple fiber reinforcement plastic bar or dragline |
| CN201704877U (en) * | 2010-04-16 | 2011-01-12 | 卓清 | Wave-shaped-gear-grip anchorage for gripping high-strength fiber thick composite material |
| CN102002911A (en) * | 2010-11-10 | 2011-04-06 | 中交公路规划设计院有限公司 | Carbon fiber cable strand inner sleeve conical bonded anchorage device |
| CN202107998U (en) * | 2011-04-27 | 2012-01-11 | 南通大学 | Friction anchorage device used for fiber reinforced composite bar dragline |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321150A (en) * | 2013-07-04 | 2013-09-25 | 南通大学 | Pretightening-force-adjustable friction-type anchorage device applied to fiber-reinforced composite material rib inhaul cable |
| CN103321150B (en) * | 2013-07-04 | 2014-12-10 | 南通大学 | Pretightening-force-adjustable friction-type anchorage device applied to fiber-reinforced composite material rib inhaul cable |
| CN104233955A (en) * | 2013-07-04 | 2014-12-24 | 南通大学 | Spiral friction type anchor device for fiber reinforced composite material rib pull cable |
| CN104264583A (en) * | 2013-07-04 | 2015-01-07 | 南通大学 | Spiral friction type anchoring tool with adjustable pre-tightening force used for fiber reinforced composite material rib inhaul cable |
| CN104264583B (en) * | 2013-07-04 | 2016-01-20 | 南通大学 | Fiber-reinforced composite material rib drag-line preload adjustable spiral friction-type ground tackle |
| CN104233955B (en) * | 2013-07-04 | 2016-04-06 | 南通大学 | For the spiral friction-type ground tackle of fiber-reinforced composite material rib drag-line |
| CN112064504A (en) * | 2020-09-09 | 2020-12-11 | 清华大学 | Self-anchored carbon fiber inhaul cable |
| CN115680195A (en) * | 2022-11-07 | 2023-02-03 | 东南大学 | Composite material inhaul cable anchoring method and composite material inhaul cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102251474B (en) | 2012-12-05 |
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Granted publication date: 20121205 Termination date: 20160427 |