CN103321150A - Pretightening-force-adjustable friction-type anchorage device applied to fiber-reinforced composite material rib inhaul cable - Google Patents
Pretightening-force-adjustable friction-type anchorage device applied to fiber-reinforced composite material rib inhaul cable Download PDFInfo
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- CN103321150A CN103321150A CN2013102786419A CN201310278641A CN103321150A CN 103321150 A CN103321150 A CN 103321150A CN 2013102786419 A CN2013102786419 A CN 2013102786419A CN 201310278641 A CN201310278641 A CN 201310278641A CN 103321150 A CN103321150 A CN 103321150A
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- cover plate
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- fiber
- composite material
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
Abstract
The invention discloses a pretightening-force-adjustable friction-type anchorage device applied to a fiber-reinforced composite material rib inhaul cable. The pretightening-force-adjustable friction-type anchorage device comprises a cover plate A, a cover plate B, a column core with a spiral groove, and an inhaul cable fastener, the cover plate A and the cover plate B are provided with spiral grooves respectively, sections of the spiral grooves in the cover plates and the column core are all semicircles identical in diameter, the spiral grooves in the two cover plates and the column core are matched with one another to form a space spiral groove with a round section, an inlet hole and an outlet hole are formed at the starting point and the ending point of the spiral groove of the cover plate A, an FRP (fiber reinforced polymer) rib inhaul cable identical with the section of the spiral groove in diameter penetrates the inlet hole of the cover plate A, is wound in the spiral groove in the column core and penetrates the outlet hole of the cover plate A, the FRP rib inhaul cable is wrapped by a curved surface of the space spiral groove formed by the cover plates and the column core, and the tail end of the FRP rib inhaul cable is fixed by the inhaul cable fastener mounted on the cover plate A. The pretightening-force-adjustable friction-type anchorage device applied to the fiber-reinforced composite material rib inhaul cable is reasonable in structure, reliable in performance and durable.
Description
Technical field
The present invention relates to fibre reinforced composites (FRP) the muscle anchor-hold device in a kind of civil engineering and the traffic engineering, is a kind of preload adjustable friction anchorage device that is applied to the 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, at this moment the wirerope drag-line is not competent.The super-span suspension bridge also has same problem.The advantages such as carbon fibre reinforced composite (CFRP) muscle has that quality is light, intensity is high, corrosion-resistant, endurance, underrelaxation, solenoid isolation is good and damping performance is good have good application prospect as the strong guy cable of cable stayed bridge and suspension bridge.As the CFRP muscle drag-line of main bearing member, its bearing capacity is mainly by anchoring property control, rather than by the strength control of CFRP muscle itself.This is because 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 it in the premature failure of anchorage zone.This also is that CFRP muscle drag-line does not have now and can reach one of major reason of extensive use in bridge engineering and general civil engineering.Therefore CFRP muscle drag-line will be applied on super-span and Extra-Long-Span Cable-Stayed Bridge and the suspension 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 large classes basically.Mechanical grip formula ground tackle exists the problem of the stress equilibrium of exerting pressure in the clamp area; When the cable-tension direction constantly changed, mechanical grip formula ground tackle also existed and adds problems such as holding the bending of end, district and shear fatigue, and also there are the problems such as the bending of bond regions end and shear fatigue in bond type anchorage.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructure, the preload adjustable friction anchorage device that is applied to the fiber-reinforced composite material rib drag-line of dependable performance, durable.
Technical solution of the present invention is:
A kind of preload adjustable friction anchorage device that is applied to the fiber-reinforced composite material rib drag-line is characterized in that: comprise two band spiral fluted cover plate A and cover plate B, a band spiral fluted post core, a drag-line fastener; Its cover plate is the identical semicircle of diameter with helicla flute cross section in the post core, and the helicla flute in two cover plates and the post core complements each other to form a cross section and is the spatially spiral groove of circle; Cover plate A has at spiral fluted starting point and terminal point and enters hole and delivery outlet, pass entering the hole, being wrapped in the helicla flute in the post core of cover plate A with the FRP muscle drag-line of helicla flute cross section same diameter, and pass the delivery outlet of cover plate A, FRP muscle drag-line is wrapped up by the Space Rotating groove curved surface of cover plate and the formation of post core, and FRP muscle drag-line end is fixed by the drag-line fastener that is installed on the cover plate A.
Cover plate A, cover plate B, be connected and fixed by the alignment pin at two ends with spiral fluted post core three.
Cover plate A, cover plate B are provided with the shirt rim, and cover plate A, cover plate B are by the set bolt on the fixing shirt rim, nut connection.
Leave the gap between cover plate A and the cover plate B, can regulate anchor bolt nut, make between helicla flute and FEP muscle drag-line and produce preload pressure.
The curved surface and the spiral fluted surface blending that enter hole and delivery outlet are smooth continuously.
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 Euler's flexible cable friction formula, and the frictional force of drag-line becomes the geometric growth relation with rotating cycle.
2, FRP muscle drag-line is met the effect that the power end very easily is subject to lateral pressure and shearing in the anchorage zone of traditional clip type or bond type anchorage, and horizontal compressive strength and the shear strength of FRP muscle drag-line are lower, and the lateral shear fatigue failure in use easily occurs.In ground tackle of the present invention, FRP muscle drag-line is wrapped in the helicla flute of two cover plates and post core, effect that can the elimination transverse shearing force.As long as according to FRP muscle drag-line diameter, determine suitable post in-core external diameter and cover plate inner and outer diameter, process post core and cover plate A, cover plate B, and one by one segmentation high accuracy to process the locus accurate, cooperate the helicla flute that fits together perfectly, just can guarantee that FRP muscle drag-line can be wrapped in the spatially spiral groove of ground tackle fully.
3, ground tackle of the present invention can come pretightning force between adjustable screw groove and the FRP muscle drag-line by regulating anchor bolt nut between two cover plates, further increases the suffered spin friction power of FRP muscle drag-line.
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 another angle schematic diagram of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the left view of Fig. 3.
The specific embodiment
A kind of preload adjustable friction anchorage device that is applied to the fiber-reinforced composite material rib drag-line comprises two band spiral fluted cover plate (A) 1 and 2, bands of cover plate (B) spiral fluted post core 3, a drag-line fastener 4; Its cover plate is the identical semicircle of diameter with helicla flute cross section in the post core, and the helicla flute in two cover plates and the post core complements each other to form a cross section and is the spatially spiral groove of circle; Cover plate A has at spiral fluted starting point and terminal point and enters hole and delivery outlet, pass entering the hole, being wrapped in the helicla flute in the post core of cover plate A with the FRP muscle drag-line 5 of helicla flute cross section same diameter, and pass the delivery outlet of cover plate A, FRP muscle drag-line is wrapped up by the Space Rotating groove curved surface of cover plate and the formation of post core, and FRP muscle drag-line end is fixing by the drag-line fastener 4 that is installed on the cover plate A.Cover plate and post core are made by high strength steel, have the higher strength of materials.
Cover plate A, cover plate B, be connected and fixed by the alignment pin 6 at two ends with spiral fluted post core three.
Cover plate A, cover plate B are provided with shirt rim 7, and cover plate A, cover plate B are by the set bolt on the fixing shirt rim, nut 8 connections.
Leave the gap between cover plate A and the cover plate B, can regulate anchor bolt nut, make between helicla flute and FEP muscle drag-line and produce preload pressure.
The curved surface and the spiral fluted surface blending that enter hole and delivery outlet are smooth continuously.
Claims (5)
1. a preload adjustable friction anchorage device that is applied to the fiber-reinforced composite material rib drag-line is characterized in that: comprise two band spiral fluted cover plate A and cover plate B, a band spiral fluted post core, a drag-line fastener; Its cover plate is the identical semicircle of diameter with helicla flute cross section in the post core, and the helicla flute in two cover plates and the post core complements each other to form a cross section and is the spatially spiral groove of circle; Cover plate A has at spiral fluted starting point and terminal point and enters hole and delivery outlet, pass entering the hole, being wrapped in the helicla flute in the post core of cover plate A with the FRP muscle drag-line of helicla flute cross section same diameter, and pass the delivery outlet of cover plate A, FRP muscle drag-line is wrapped up by the Space Rotating groove curved surface of cover plate and the formation of post core, and FRP muscle drag-line end is fixed by the drag-line fastener that is installed on the cover plate A.
2. the preload adjustable friction anchorage device that is applied to the fiber-reinforced composite material rib drag-line according to claim 1 is characterized in that: cover plate A, cover plate B, be connected and fixed by the alignment pin at two ends with spiral fluted post core three.
3. the preload adjustable friction anchorage device that is applied to the fiber-reinforced composite material rib drag-line according to claim 1 and 2, it is characterized in that: cover plate A, cover plate B are provided with the shirt rim, and cover plate A, cover plate B are by set bolt, nut connection on the fixing shirt rim.
4. the preload adjustable friction anchorage device that is applied to the fiber-reinforced composite material rib drag-line according to claim 3, it is characterized in that: leave the gap between cover plate A and the cover plate B, can regulate anchor bolt nut, make between helicla flute and FEP muscle drag-line and produce preload pressure.
5. the preload adjustable friction anchorage device that is applied to the fiber-reinforced composite material rib drag-line according to claim 1 and 2, it is characterized in that: the curved surface and the spiral fluted surface blending that enter hole and delivery outlet are smooth continuously.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410506705.0A CN104264583B (en) | 2013-07-04 | 2013-07-04 | Fiber-reinforced composite material rib drag-line preload adjustable spiral friction-type ground tackle |
| CN201310278641.9A CN103321150B (en) | 2013-07-04 | 2013-07-04 | Pretightening-force-adjustable friction-type anchorage device applied to fiber-reinforced composite material rib inhaul cable |
| CN201410506682.3A CN104233955B (en) | 2013-07-04 | 2013-07-04 | For the spiral friction-type ground tackle of fiber-reinforced composite material rib drag-line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310278641.9A CN103321150B (en) | 2013-07-04 | 2013-07-04 | Pretightening-force-adjustable friction-type anchorage device applied to fiber-reinforced composite material rib inhaul cable |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410506682.3A Division CN104233955B (en) | 2013-07-04 | 2013-07-04 | For the spiral friction-type ground tackle of fiber-reinforced composite material rib drag-line |
| CN201410506705.0A Division CN104264583B (en) | 2013-07-04 | 2013-07-04 | Fiber-reinforced composite material rib drag-line preload adjustable spiral friction-type ground tackle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103321150A true CN103321150A (en) | 2013-09-25 |
| CN103321150B CN103321150B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410506682.3A Active CN104233955B (en) | 2013-07-04 | 2013-07-04 | For the spiral friction-type ground tackle of fiber-reinforced composite material rib drag-line |
| CN201410506705.0A Active CN104264583B (en) | 2013-07-04 | 2013-07-04 | Fiber-reinforced composite material rib drag-line preload adjustable spiral friction-type ground tackle |
| CN201310278641.9A Expired - Fee Related CN103321150B (en) | 2013-07-04 | 2013-07-04 | Pretightening-force-adjustable friction-type anchorage device applied to fiber-reinforced composite material rib inhaul cable |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410506682.3A Active CN104233955B (en) | 2013-07-04 | 2013-07-04 | For the spiral friction-type ground tackle of fiber-reinforced composite material rib drag-line |
| CN201410506705.0A Active CN104264583B (en) | 2013-07-04 | 2013-07-04 | Fiber-reinforced composite material rib drag-line preload adjustable spiral friction-type ground tackle |
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| CN (3) | CN104233955B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106049280A (en) * | 2016-07-29 | 2016-10-26 | 安徽金星预应力工程技术有限公司 | Saddle end sealing device with double positioners |
| CN106087743A (en) * | 2016-07-29 | 2016-11-09 | 安徽金星预应力工程技术有限公司 | A kind of droplet-shaped saddle end seal |
| CN109722985A (en) * | 2018-12-07 | 2019-05-07 | 九江职业技术学院 | Function separate type Self-resetting friction rope energy-dissipating and shock-absorbing support |
| CN110469056A (en) * | 2019-07-05 | 2019-11-19 | 东南大学 | A kind of combined type anchorage and preparation method for fibre reinforced composites drag-line |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101676749B1 (en) * | 2016-03-18 | 2016-11-17 | 주식회사 성화씨앤비 | Band apparatus for main cable of suspension bridge |
| CN106702897B (en) * | 2017-02-27 | 2018-09-28 | 郑州大学 | A kind of steel for wire drawing and preparation method thereof |
| CN112064504B (en) * | 2020-09-09 | 2021-11-02 | 清华大学 | Self-anchored carbon fiber inhaul cable and processing method thereof |
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| KR20090041015A (en) * | 2007-10-23 | 2009-04-28 | 한국건설기술연구원 | Anchorage apparatus for fiber tendon with pressed projections |
| CN102251474A (en) * | 2011-04-27 | 2011-11-23 | 南通大学 | Frictional anchorage device applied to fibre reinforced composite cables |
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- 2013-07-04 CN CN201410506682.3A patent/CN104233955B/en active Active
- 2013-07-04 CN CN201410506705.0A patent/CN104264583B/en active Active
- 2013-07-04 CN CN201310278641.9A patent/CN103321150B/en not_active Expired - Fee Related
Patent Citations (3)
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|---|---|---|---|---|
| CN2606774Y (en) * | 2003-04-11 | 2004-03-17 | 柳州欧维姆机械有限责任公司 | Prestress FRP rib screw pressurizing binding ground tackle |
| KR20090041015A (en) * | 2007-10-23 | 2009-04-28 | 한국건설기술연구원 | Anchorage apparatus for fiber tendon with pressed projections |
| CN102251474A (en) * | 2011-04-27 | 2011-11-23 | 南通大学 | Frictional anchorage device applied to fibre reinforced composite cables |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106049280A (en) * | 2016-07-29 | 2016-10-26 | 安徽金星预应力工程技术有限公司 | Saddle end sealing device with double positioners |
| CN106087743A (en) * | 2016-07-29 | 2016-11-09 | 安徽金星预应力工程技术有限公司 | A kind of droplet-shaped saddle end seal |
| CN109722985A (en) * | 2018-12-07 | 2019-05-07 | 九江职业技术学院 | Function separate type Self-resetting friction rope energy-dissipating and shock-absorbing support |
| CN109722985B (en) * | 2018-12-07 | 2020-07-31 | 九江职业技术学院 | Function separation type self-resetting friction cable energy dissipation and shock absorption support |
| CN110469056A (en) * | 2019-07-05 | 2019-11-19 | 东南大学 | A kind of combined type anchorage and preparation method for fibre reinforced composites drag-line |
| CN110469056B (en) * | 2019-07-05 | 2021-03-26 | 东南大学 | Combined anchorage device for fiber reinforced composite material inhaul cable and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103321150B (en) | 2014-12-10 |
| CN104233955A (en) | 2014-12-24 |
| CN104264583B (en) | 2016-01-20 |
| CN104264583A (en) | 2015-01-07 |
| CN104233955B (en) | 2016-04-06 |
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