CN214656371U - Carbon fiber inhaul cable cold casting anchoring structure - Google Patents
Carbon fiber inhaul cable cold casting anchoring structure Download PDFInfo
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- CN214656371U CN214656371U CN202120829005.0U CN202120829005U CN214656371U CN 214656371 U CN214656371 U CN 214656371U CN 202120829005 U CN202120829005 U CN 202120829005U CN 214656371 U CN214656371 U CN 214656371U
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Abstract
The utility model provides a carbon fiber cable chill casting anchor structure, its characterized in that: the anchoring plate is arranged in the shaft hole of the anchor cup; the carbon fiber composite material ropes penetrate through the through holes of the anchoring plates one by one and are fixed in the through holes; the sealing cylinder is inserted into the shaft hole of the anchor cup and is sleeved at the rear end of the high-density polyethylene sheath; the anchoring section positioned in the shaft hole of the anchor cup and the sealing cylinder comprises a low-temperature curing chill casting filler section with the bottom surface starting from the end surface of the anchoring plate and a normal-temperature curing agent section which is adjacent to the low-temperature curing chill casting filler and wraps the rear end of the high-density polyethylene sheath; the carbon fiber composite material rope is wrapped in the anchoring section; and a sealing structure is arranged at the junction of the sealing cylinder and the high-density polyethylene sheath. The utility model discloses the vertical high tensile properties of full play carbon-fibre composite reduces and receives load end stress concentration phenomenon, effectively overcomes the shortcoming that the vertical toughness of carbon-fibre composite and shear strength are low.
Description
Technical Field
The utility model belongs to bridge carbon fiber cable field, concretely relates to carbon fiber cable chill casting anchor structure.
Background
The development of cable-stayed bridges shows that the application of high-strength cable materials plays an important role in advancing bridge structures to larger spans. The carbon fiber composite material has the characteristics of light weight, high strength, strong corrosion resistance, small thermal expansion coefficient and the like, and can provide higher specific strength (the ratio of tensile strength to density) and specific rigidity (the ratio of elastic modulus to density), so that the carbon fiber inhaul cable has good application prospect in bridge engineering instead of a high-strength steel wire.
At present, the traditional inner cone type bonding anchorage device filled with filling media is mainly adopted for the carbon fiber inhaul cable anchorage device, and the longitudinal elastic modulus and the strength of the traditional inner cone type bonding anchorage device are far greater than the transverse elastic modulus and the strength of the traditional inner cone type bonding anchorage device because the carbon fiber composite material is an anisotropic material. Under the condition of only bearing axial force, the carbon fiber composite material does not have problems, but the carbon fiber composite material in the anchorage device needs to bear multidirectional stress such as bending, shearing, deflection and the like, and the anchoring part of the carbon fiber composite material is easy to have the problems of radial extrusion stress concentration, shearing stress concentration and the like, so that the carbon fiber composite material is locally damaged and fails early.
Disclosure of Invention
The utility model provides a carbon fiber cable chill casting anchor structure, the shortcoming of prior art is solved to its purpose, and the vertical high tensile properties of full play carbon-fibre composite reduces and receives load end stress concentration phenomenon, effectively overcomes the shortcoming that the vertical toughness of carbon-fibre composite and shear strength are low.
The utility model provides a carbon fiber cable chill casting anchor structure which characterized in that:
the anchoring plate is arranged in the shaft hole of the anchor cup;
the carbon fiber composite material ropes penetrate through the through holes of the anchoring plates one by one and are fixed in the through holes;
the sealing cylinder is inserted into the shaft hole of the anchor cup and is sleeved at the rear end of the high-density polyethylene sheath;
the anchoring section positioned in the shaft hole of the anchor cup and the sealing cylinder comprises a low-temperature curing chill casting filler section with the bottom surface starting from the end surface of the anchoring plate and a normal-temperature curing agent section which is adjacent to the low-temperature curing chill casting filler and wraps the rear end of the high-density polyethylene sheath;
the carbon fiber composite material rope is wrapped in the anchoring section;
and a sealing structure is arranged at the junction of the sealing cylinder and the high-density polyethylene sheath.
The shaft hole of the anchor cup is divided into a small end hole, a frustum hole and a large end hole, the middle part of the shaft hole is the frustum hole, the diameter of the small end hole is larger than that of the small end of the frustum hole, the diameter of the large end hole is larger than that of the large end of the frustum hole, the elastic restraining ring is arranged on a step where the small end hole and the frustum hole are located, and the top surface of the low-temperature curing cold-cast filler section is flush with the top surface of the elastic restraining ring.
A plurality of rows of through holes are uniformly distributed on the circumference of the anchoring plate, and each row of through holes are a plurality of through holes which are radially arranged along the cross section of the anchoring plate.
The hardware fitting is a frustum body with an axial through hole, a cutting groove which is axially extended and provided with an open end and a closed end is formed in the wall of the frustum body, the cutting groove is communicated with the through hole and the outer wall of the hardware fitting, and the open end of the cutting groove is positioned at the large-diameter end part of the hardware fitting; the fitting inserts the through-hole of the frustum hole form of anchor plate, and the apex angle of the conical surface of the outer wall of fitting is greater than the apex angle of the conical surface of the through-hole of anchor plate, and carbon-fibre composite rope is cliied to the fitting.
Two symmetrically arranged cutting grooves are arranged on the wall of the hardware fitting.
The carbon fiber composite material rope is exposed outside the large-diameter end of the hardware fitting.
The sealing cylinder is pressed against the top surface of the elastic restraining ring.
Has the advantages that:
1. the carbon fiber composite material is combined and anchored in the anchoring area in a segmented mode, the pressure stress distribution mode can ensure that the bonding stress of the anchoring agent and the interface of the carbon fiber composite material is uniformly distributed along the axial direction, and the stress concentration phenomenon of a loaded end is reduced.
2. The carbon fiber composite material in the anchorage device is arranged in a dispersed mode, the free end of the anchorage device is extruded and anchored by a single hardware fitting, and the anchorage device is short in length and large in holding power. The curing and curing temperature of the low-temperature curing cold-cast filler is 110-120 ℃, which is lower than the glass transition temperature of the carbon fiber composite resin matrix, and the performance of the carbon fiber composite is not damaged in the curing and curing process. The low-temperature curing cold-cast filler is poured at normal temperature, has good flowing property, and can ensure that the carbon fiber composite material is in a compact gripping and wrapping state.
3. When the carbon fiber composite material and the anchoring filler are stressed, the carbon fiber composite material and the anchoring filler are in an elastic deformation state, and the elastic modulus of the anchoring filler after curing is close to the transverse elastic modulus of the carbon fiber composite material. Under the condition of ultimate load of the inhaul cable, the cold-cast anchoring structure can enable the carbon fiber composite material to be stressed uniformly, give full play to the longitudinal high-strength performance of the carbon fiber composite material, and effectively overcome the defects of low longitudinal toughness and low shear strength of the carbon fiber composite material.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is an axial sectional view of the fitting;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is an end view of an anchor plate;
fig. 5 is a sectional view B-B of fig. 4.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to the drawings without inventive labor. In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "inner", "outer", "bottom", and the like as used herein are used in the description to indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, 2, 3, 4, and 5:
the carbon fiber inhaul cable body is composed of a plurality of carbon fiber composite material ropes 4 and a high-density polyethylene sheath 9. The anchorage component comprises an anchor cup 1, a hardware fitting 2, an anchoring plate 3, a low-temperature curing cold-cast filler 5, an elastic restraining ring 6, a normal-temperature curing agent 7, a sealing cylinder 8 and the like.
As shown in fig. 1:
the shaft hole of the anchor cup 1 is divided into a small end hole 11, a frustum hole 12 and a large end hole 13, the middle part is the frustum hole 12, the diameter of the small end hole 11 is larger than that of the small end of the frustum hole 12, and the diameter of the large end hole 13 is larger than that of the large end of the frustum hole 12.
As shown in fig. 4 and 5:
a plurality of rows of through holes 31 are uniformly distributed on the circumference of the anchoring plate 3, each row of through holes 31 is a plurality of through holes 31 arranged along the radial direction of the cross section of the anchoring plate 3, and the through holes 31 are frustum holes.
As shown in fig. 2 and 3:
the hardware fitting 2 is a frustum body and is provided with a cylindrical axial through hole 21, two axially extending cutting grooves 22 which are symmetrically arranged are formed in the wall of the hardware fitting 2, the cutting grooves 22 are communicated with the through hole 21 and the outer wall of the hardware fitting 2, the open end of each cutting groove 22 is located at the end part of the large diameter of the hardware fitting 2, and the closed end of each cutting groove 22 is close to the end part of the small diameter of the hardware fitting 22. In this way, the two side walls 23 and 24 corresponding to the slot 22 of the fitting 2 may be deformed and brought close to each other by the presence of the slot 22.
The vertex angle of the outer wall conical surface of the hardware 2 is larger than that of the conical surface of the through hole 31.
After the carbon fiber inhaul cable body is manufactured, the anchorage device component and the cable body are assembled:
the elastic restraining ring 6 is arranged in the anchor cup 1 and is propped against the step at the junction of the small end hole 11 and the frustum hole 12.
Stripping the high-density polyethylene sheath 9 of the anchoring section, and polishing the carbon fiber composite material rope 4 of the anchoring section by using abrasive paper.
The carbon fiber composite material rope 4 penetrates through the through hole 31 of the anchoring plate 3 one by one, the hardware fitting 2 is inserted into the through hole 31, the carbon fiber composite material rope 4 penetrates through the through hole 21 of the hardware fitting 2, and the carbon fiber composite material rope 4 is exposed outside the large-diameter end of the hardware fitting 2 by 15 mm.
The large-diameter end of the hardware fitting 2 is jacked and pressed by a special tool to move towards the through hole 31, and the vertex angle of the outer wall conical surface of the hardware fitting 2 is larger than that of the inner hole conical surface of the through hole 31, so that the side wall 23 and the side wall 24 of the hardware fitting 2 are close to each other due to the existence of the grooving 22, and pretightening force is applied to the carbon fiber composite material rope 4 to tightly clamp the carbon fiber composite material rope 4.
And (3) placing the anchoring plate 3 into the anchor cup 1, and connecting the anchoring plate 3 and the anchor cup 1 by adopting a tool.
The low-temperature solidified cold-cast filler section 5 is poured from the small-end hole 11 of the anchor cup 1 to a height flush with the elastic restraining ring 6, that is, the top surface 51 of the low-temperature solidified cold-cast filler section 5 is flush with the top surface 61 of the elastic restraining ring 6.
Then the sealing cylinder 8 is inserted into the small end hole 11 of the anchor cup 1 and buried into a certain depth to be propped against the top surface 61 of the restraining ring 6, the sealing cylinder 8 is sleeved at the rear end of the high-density polyethylene sheath 9, the normal-temperature curing agent section 7 is filled into the sealing cylinder 8, the normal-temperature curing agent section 7 also wraps the rear end of the high-density polyethylene sheath 9, and finally the sealing structure 10 is installed at the junction of the sealing cylinder 8 and the high-density polyethylene sheath 9 to seal the carbon fiber composite material rope 4.
Namely, the carbon fiber composite material rope 4 is wrapped in an anchoring section which comprises a low-temperature curing cold-cast filling section 5 with the bottom surface starting from the end surface of the anchoring plate 3 and a normal-temperature curing agent section 7 which is adjacent to the low-temperature curing cold-cast filling section 5 and wraps the rear end of the high-density polyethylene sheath 9.
The utility model discloses the ground tackle is the segmentation anchor structure, and carbon-fibre composite rope 4 is the toper and disperses in the ground tackle, and carbon-fibre composite rope 4 of anchor cup 1's big end hole 13 side adopts anchor board 3 and 2 centre grippings of gold utensil, and anchor cup 1's frustum hole 12 fills low temperature anchor chill casting filler section 5 and bonds in the anchor to carbon-fibre composite rope 4, and carbon-fibre composite rope 4 of anchor cup 1's little end hole 11 side adopts elasticity restraint ring 6 and normal atmospheric temperature curing agent section 7 combination to bond in the anchor.
And finally, placing the anchor device part in a heating furnace for curing: firstly, heating to 80 ℃, and keeping the temperature for 2 hours; then heating to 100 ℃, and keeping the temperature for 2 hours; then heating to 120 ℃, and keeping the temperature for 4 hours (prolonging the constant temperature time on the basis of the specification of the stay cable); and (4) cooling to 80 ℃ along with the furnace after power failure, removing asbestos cloth at the top of the furnace, and discharging after 1 hour.
The carbon fiber cable chill casting anchor structure in this embodiment has the remarkable characteristics that:
the carbon fiber composite material rope 4 is combined and anchored in the anchoring zone section and is divided into a low-temperature curing cold-cast filler section and a normal-temperature curing agent section, and the pressure stress distribution form can ensure that the bonding stress of the anchoring agent and the interface of the carbon fiber composite material rope is uniformly distributed along the axial direction, so that the stress concentration phenomenon of a loaded end is reduced.
The curing temperature of the low-temperature curing chill casting filler is 110-120 ℃, the curing temperature is lower than the glass transition temperature of the resin matrix of the carbon fiber composite rope, and the performance of the carbon fiber composite rope is not damaged in the curing process.
The carbon fiber composite material ropes 4 at the large end hole 13 of the anchorage device are arranged in a dispersed mode, the free end is extruded and anchored by a single hardware fitting 2, and the anchorage device is short in length and large in holding power.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a carbon fiber cable chill casting anchor structure which characterized in that: the anchoring plate is arranged in the shaft hole of the anchor cup; the carbon fiber composite material ropes penetrate through the through holes of the anchoring plates one by one and are fixed in the through holes; the sealing cylinder is inserted into the shaft hole of the anchor cup and is sleeved at the rear end of the high-density polyethylene sheath; the anchoring section positioned in the shaft hole of the anchor cup and the sealing cylinder comprises a low-temperature curing chill casting filler section with the bottom surface starting from the end surface of the anchoring plate and a normal-temperature curing agent section which is adjacent to the low-temperature curing chill casting filler and wraps the rear end of the high-density polyethylene sheath; the carbon fiber composite material rope is wrapped in the anchoring section; and a sealing structure is arranged at the junction of the sealing cylinder and the high-density polyethylene sheath.
2. The carbon fiber cable chill casting anchor structure as set forth in claim 1, wherein: the shaft hole of the anchor cup is divided into a small end hole, a frustum hole and a large end hole, the middle part of the shaft hole is the frustum hole, the diameter of the small end hole is larger than that of the small end of the frustum hole, the diameter of the large end hole is larger than that of the large end of the frustum hole, the elastic restraining ring is arranged on a step where the small end hole and the frustum hole are located, and the top surface of the low-temperature curing cold-cast filler section is flush with the top surface of the elastic restraining ring.
3. The carbon fiber cable chill casting anchor structure as set forth in claim 1, wherein: a plurality of rows of through holes are uniformly distributed on the circumference of the anchoring plate, and each row of through holes are a plurality of through holes which are radially arranged along the cross section of the anchoring plate.
4. The carbon fiber cable chill casting anchor structure as set forth in claim 1, wherein: the hardware fitting is a frustum body with an axial through hole, a cutting groove which is axially extended and provided with an open end and a closed end is formed in the wall of the frustum body, the cutting groove is communicated with the through hole and the outer wall of the hardware fitting, and the open end of the cutting groove is positioned at the large-diameter end part of the hardware fitting; the fitting inserts the through-hole of the frustum hole form of anchor plate, and the apex angle of the conical surface of the outer wall of fitting is greater than the apex angle of the conical surface of the through-hole of anchor plate, and carbon-fibre composite rope is cliied to the fitting.
5. The carbon fiber cable chill casting anchor structure as set forth in claim 4, wherein: two symmetrically arranged cutting grooves are arranged on the wall of the hardware fitting.
6. The carbon fiber cable chill casting anchor structure as set forth in claim 1, wherein: the carbon fiber composite material rope is exposed outside the large-diameter end of the hardware fitting.
7. A carbon fiber cable chill-cast anchor structure as defined in claim 2, wherein: the sealing cylinder is pressed against the top surface of the elastic restraining ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120829005.0U CN214656371U (en) | 2021-04-22 | 2021-04-22 | Carbon fiber inhaul cable cold casting anchoring structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120829005.0U CN214656371U (en) | 2021-04-22 | 2021-04-22 | Carbon fiber inhaul cable cold casting anchoring structure |
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| CN214656371U true CN214656371U (en) | 2021-11-09 |
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| CN202120829005.0U Active CN214656371U (en) | 2021-04-22 | 2021-04-22 | Carbon fiber inhaul cable cold casting anchoring structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214936A (en) * | 2021-11-23 | 2022-03-22 | 上海浦江缆索股份有限公司 | Carbon fiber inhaul cable with good anchoring effect and uniform stress |
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2021
- 2021-04-22 CN CN202120829005.0U patent/CN214656371U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214936A (en) * | 2021-11-23 | 2022-03-22 | 上海浦江缆索股份有限公司 | Carbon fiber inhaul cable with good anchoring effect and uniform stress |
| CN114214936B (en) * | 2021-11-23 | 2023-11-24 | 上海浦江缆索股份有限公司 | Carbon fiber inhaul cable good in anchoring effect and even in stress |
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