CN209891559U - Prestressed composite bar composite anchorage - Google Patents
Prestressed composite bar composite anchorage Download PDFInfo
- Publication number
- CN209891559U CN209891559U CN201920052723.4U CN201920052723U CN209891559U CN 209891559 U CN209891559 U CN 209891559U CN 201920052723 U CN201920052723 U CN 201920052723U CN 209891559 U CN209891559 U CN 209891559U
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- Prior art keywords
- composite
- soft metal
- prefabricated
- prefabricated sleeve
- metal pipe
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- 239000002131 composite material Substances 0.000 title claims abstract description 90
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 7
- 230000001070 adhesive effect Effects 0.000 claims abstract description 7
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 239000007767 bonding agent Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 20
- 239000011150 reinforced concrete Substances 0.000 abstract description 18
- 238000004873 anchoring Methods 0.000 abstract description 16
- 239000004567 concrete Substances 0.000 abstract description 6
- 210000003205 muscle Anatomy 0.000 abstract description 5
- 238000001125 extrusion Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 description 6
- 238000000641 cold extrusion Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000011405 expansive cement Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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Abstract
The utility model provides a prestressed composite bar composite anchorage device, which comprises a soft metal pipe, a prefabricated sleeve and a binder; when in use, the prefabricated sleeve is sleeved at one end of the composite bar to be anchored; the soft metal pipe is sleeved on the composite bar and is positioned in the prefabricated sleeve; the adhesive is filled in the prefabricated sleeve. The utility model discloses prestressing force clad material muscle combined type ground tackle can be applied to simultaneously in the prefabricated clad material reinforced concrete component of pretension method and post-tensioning prestressing force. In the embodiment, the composite bar is sleeved with the soft metal pipe, the soft metal sleeve is tightly attached to the surface of the composite bar after extrusion, one end of the composite bar, which is sleeved with the soft metal pipe, is positioned in the prefabricated sleeve, and anchoring is performed by injecting the binder. The embodiment of the utility model provides a simple structure, small, anchor are efficient, construction convenience, corrosion resisting property are good, can provide high-efficient anchor and ensure that the ground tackle service life exceeds the component service life for prestressing force composite concrete component.
Description
Technical Field
The utility model belongs to the technical field of building structure engineering, in particular to prestressing force combined type ground tackle of combined type of compound material muscle.
Background
In the manufacturing of the post-tensioning method prestressed prefabricated composite reinforced concrete member, a clamping piece type anchorage device or a bonding type anchorage device is usually adopted, the clamping piece type anchorage device is easy to generate a notch effect, and the composite reinforcement is clamped to break to cause anchoring failure; the adhesive anchorage requires a long anchorage length, which is inconvenient for engineering operation. In the process of manufacturing the pre-tensioning prestressed composite reinforced concrete member, an anchorage device is not used, only a temporary anchoring device called a clamp is used, after the tension is released, the clamp is cut off, and the mechanical property of the prefabricated composite reinforced concrete structure is reduced under long-term load.
Disclosure of Invention
The utility model provides a prestressing force combined type ground tackle of combined type of clad wood muscle can be applied to simultaneously in the preparation of pre-tensioned method and the prefabricated clad wood reinforced concrete component of post-tensioned method prestressing force.
In order to solve the technical problem, the embodiment of the utility model provides an adopt following technical scheme:
the embodiment of the utility model provides a prestressed composite bar composite anchorage device, which comprises a soft metal pipe, a prefabricated sleeve with a cavity and a binder; when in use, the prefabricated sleeve is sleeved at one end of the composite bar to be anchored; the soft metal pipe is sleeved on the surface of the composite bar and is positioned in the cavity of the prefabricated sleeve; the adhesive is filled in the cavity of the prefabricated sleeve.
Preferably, the cavity of the prefabricated sleeve is conical.
Preferably, the prefabricated sleeve is made of steel, the prefabricated sleeve is cylindrical in shape, and the outer surface of the prefabricated sleeve is provided with a limit nut in threaded connection.
Preferably, the prefabricated sleeve is made of ultra-high performance concrete.
Preferably, the flexible metal tube is made of an aluminum alloy.
Preferably, the soft metal pipe is cylindrical, the length of the soft metal pipe is 0.5-2.0 times of the diameter of the composite rib, the wall thickness of the soft metal pipe is 3-6 mm, and the inner diameter of the soft metal pipe is 0-2 mm larger than the diameter of the composite rib.
Preferably, the binder is grouting material or expansion cement, and the compressive strength of the grouting material is not lower than 90 Mpa.
Compared with the prior art, the utility model discloses prestressing force combined type ground tackle of compound material muscle can be applied to simultaneously in the prefabricated compound material reinforced concrete component of pretension method and post-tensioning prestressing force. In the embodiment, the composite bar is sleeved with the soft metal pipe, the soft metal sleeve is tightly attached to the surface of the composite bar after extrusion, one end of the composite bar, which is sleeved with the soft metal pipe, is positioned in the prefabricated sleeve, and anchoring is performed by injecting the binder. In the embodiment, the cold extrusion equipment is adopted to extrude the soft metal pipe on the surface of the composite bar, and the formed soft metal pipe and the composite bar are meshed together, so that the self-anchoring capability of the composite bar is improved. In the embodiment, the adhesive and the prefabricated sleeve play a role in anchoring, and simultaneously can effectively block the erosion of external concrete and the external environment, so that the soft metal pipe is reliably protected. In the embodiment, if the prefabricated sleeve is made of steel, the prefabricated sleeve can be used for a post-tensioning method prestressed prefabricated composite reinforced concrete member, overcomes the defects of large size, poor reliability, unstable performance and the like of the existing bonding type anchorage, and has the advantages of strong anchoring capacity, short length of the anchorage, good durability and the like. In the embodiment, if the prefabricated sleeve is made of the ultra-high performance concrete material, the prefabricated sleeve can be used in a pre-tensioning method prestressed prefabricated composite material reinforced concrete member and can be permanently stored in the member body, so that the transfer length and the anchoring length of the member are effectively reduced, and the mechanical property of the pre-tensioning method prestressed prefabricated composite material reinforced concrete member under long-term load is guaranteed. The embodiment of the utility model provides a simple structure, small, anchor are efficient, construction convenience, corrosion resisting property are good, can provide high-efficient anchor and ensure that the ground tackle service life exceeds for the prefabricated compound material reinforced concrete component of prestressing force.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention applied to a pretensioned prestressing reinforced concrete structure.
Fig. 2 is a schematic structural diagram of the embodiment of the present invention applied to a post-tensioned prestressed reinforced concrete member.
The figure shows that: the composite material comprises a composite bar 1, a soft metal pipe 2, a prefabricated sleeve 3, a binder 4 and a limit nut 5.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the prestressed composite rib composite anchor according to the embodiment of the present invention comprises a soft metal pipe 2, a prefabricated sleeve 3 having a cavity, and a binder 4. When in use, the prefabricated sleeve 3 is sleeved at one end of the composite bar 1 to be anchored. The soft metal pipe 2 is sleeved on the surface of the composite bar 1 and is positioned in the cavity of the prefabricated sleeve 3. The adhesive 4 is filled in the cavity of the prefabricated sleeve 3.
The utility model discloses prestressing force combined type ground tackle of compound material muscle can be applied to simultaneously in the prefabricated compound material reinforced concrete component of pretension method and post-tensioning prestressing force. In the embodiment, the composite bar 1 is sleeved with the soft metal pipe 2, the soft metal sleeve is tightly attached to the surface of the composite bar after extrusion, one end of the composite bar sleeved with the soft metal pipe is positioned in the prefabricated sleeve 3, and the composite bar is anchored by injecting the binder 4. In the embodiment, the soft metal pipe 2 is extruded on the surface of the composite bar 1 by using cold extrusion equipment, the formed soft metal pipe and the composite bar are meshed together, the section strength between the composite bar 1 and the soft metal pipe 2 is far higher than the strength between the composite bar 1 and the binder 4, and the self-anchoring capability of the composite bar is greatly improved. In the embodiment, the adhesive and the prefabricated sleeve play a role in anchoring, and can effectively prevent the erosion of external concrete and the external environment, so that the soft metal pipe is reliably protected. The embodiment has the characteristics of strong anchoring capability, small size, good durability and the like, can be simultaneously applied to pre-tensioning method and post-tensioning method components as required, and has great practical significance for promoting the realization of large-scale industrial production and application of the prestressed prefabricated composite reinforced concrete components.
Preferably, the cavity of the prefabricated sleeve 3 is tapered. The prefabricated sleeve 3 is internally provided with a conical cavity, and the conical cavity and the soft metal pipe 2 attached to the surface of the composite bar 1 and extruded to form can jointly enhance the bonding effect on the composite bar 1, effectively reduce the length required by anchoring the composite bar and ensure that the anchor is small in size.
Preferably, the prefabricated sleeve 3 is made of steel and has a cylindrical shape, and the outer surface of the prefabricated sleeve 3 is provided with a limit nut 5 in threaded connection. If the prefabricated sleeve 3 is made of steel, the prefabricated sleeve can be used in a post-tensioning method prestress prefabricated composite reinforced concrete member, and in the application of the post-tensioning method, after the composite bar anchorage is tensioned, the limiting nut 5 is used for limiting the position of the fixed composite bar anchorage and fixing or clamping the limiting nut outside the member body, so that the prestress can be maintained. The embodiment is used for a post-tensioning method prestressed prefabricated composite material reinforced concrete member, overcomes the defects of large size, poor reliability, unstable performance and the like of the existing bonding type anchorage, and has the advantages of strong anchoring capability, short length of the anchorage, good durability and the like.
The forming method of the prestressed composite rib composite anchor of the embodiment comprises the following steps:
s10, sleeving the soft metal pipe 2 on one end to be anchored of the composite bar 1, and enabling the soft metal pipe 2 to generate plastic deformation by adopting cold extrusion equipment so as to be tightly attached to the surface of the composite bar 1;
s20, arranging PVC positioning plates at openings at two ends of the prefabricated sleeve 3, and sealing one end of the prefabricated sleeve by using a waterproof film;
s30, penetrating one end, sleeved with the soft metal pipe 2, of the composite bar 1 into the prefabricated sleeve 3 from the open end of the prefabricated sleeve 3 along the PVC positioning plate, and enabling the composite bar to be located on the central axis of the prefabricated sleeve;
s40, injecting a binder 4 from one open end of the prefabricated sleeve 3;
s50, after the binder is cured, removing the PVC positioning plate and the waterproof membrane plug, and completing the forming of the prestressed composite bar composite anchor.
As a preferred example, the prefabricated sleeve 3 is made of ultra-high performance concrete. If the prefabricated sleeve 3 is made of the ultra-high performance concrete, the prefabricated sleeve can be used in a pretensioning method prestressed prefabricated composite material reinforced concrete member and permanently stored in the member body, so that the mechanical property of the pretensioning method prestressed prefabricated composite material reinforced concrete member under long-term load is guaranteed. The ultra-high performance concrete has the characteristics of excellent freezing resistance, excellent carbonization resistance, excellent impermeability, excellent wear resistance, high strength and the like, and can provide secondary protection for the inner soft metal pipe. The binder, the ultra-high performance concrete and the common concrete belong to the same cement matrix material, so the binding performance among the interfaces of the binder, the ultra-high performance concrete and the common concrete is better. The prefabricated sleeve can be flexibly designed into different shapes, the formed wedge effect can enlarge the punching area when the concrete at the end part is damaged in the stress process of the prestressed component, the anchoring performance is strong, and the small size can be realized.
The forming method of the prestressed composite rib composite anchor of the embodiment comprises the following steps:
s10, tensioning the composite bar 1 to a designed prestress by adopting a clamp;
s20, sleeving the soft metal pipe 2 on one end to be anchored of the composite bar 1, and enabling the soft metal pipe 2 to generate plastic deformation by adopting cold extrusion equipment so as to be tightly attached to the surface of the composite bar 1;
s30, arranging PVC positioning plates at openings at two ends of the prefabricated sleeve 3, and sealing one end of the prefabricated sleeve by using a waterproof film;
s40, penetrating one end, sleeved with the soft metal pipe 2, of the composite bar 1 into the prefabricated sleeve 3 from the open end of the prefabricated sleeve 3 along the PVC positioning plate, and enabling the composite bar to be located on the central axis of the prefabricated sleeve;
s50, injecting a binder 4 from one open end of the prefabricated sleeve 3;
and S60, after the binder is cured, removing the PVC positioning plate and the waterproof membrane plug, and finishing the forming of the prestressed composite bar composite anchor.
As a preferred example, the soft metal tube 2 is made of an aluminum alloy. The aluminum alloy pipe is soft in texture, easy to extrude, convenient to manufacture, low in material price and capable of saving manufacturing cost.
Preferably, the soft metal pipe is cylindrical, the length of the soft metal pipe is 0.5-2.0 times of the diameter of the composite bar 1, the wall thickness of the soft metal pipe is 3-6 mm, and the inner diameter of the soft metal pipe is 0-2 mm larger than the diameter of the composite bar 1. By adopting the soft metal pipe with the size, the loss rate of the composite material rib can be reduced, and the anchoring capability is improved.
Preferably, the binder 4 is grouting material or expansion cement, and the compressive strength of the grouting material is not lower than 90 Mpa. The mechanical properties of the grouting material and the expansive cement meet the standard requirements of the existing reinforcing steel bar grouting material, and the anchoring strength can be ensured.
The embodiments of the present invention are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the content of the claims of the present invention should be regarded as the technical scope of the present invention.
Claims (7)
1. A prestressed composite bar composite anchor device is characterized by comprising a soft metal pipe (2), a prefabricated sleeve (3) with a cavity and a bonding agent (4); when in use, the prefabricated sleeve (3) is sleeved at one end of the composite bar (1) to be anchored; the soft metal pipe (2) is sleeved on the surface of the composite bar (1) and is positioned in the cavity of the prefabricated sleeve (3); the adhesive (4) is filled in the cavity of the prefabricated sleeve (3).
2. The prestressed composite-rib composite anchorage of claim 1, wherein the cavity of said prefabricated sleeve (3) is tapered.
3. The prestressed composite-rib composite anchorage of claim 1 or 2, wherein the prefabricated sleeve (3) is made of steel and has a cylindrical shape, and the outer surface of the prefabricated sleeve (3) is provided with a limit nut (5) in threaded connection.
4. The prestressed composite-rib composite anchorage of claim 1 or 2, wherein said prefabricated sleeve (3) is made of ultra-high performance concrete.
5. The prestressed composite-rib composite anchorage of claim 1, wherein said soft metal tube (2) is made of aluminum alloy.
6. The prestressed composite rib composite anchorage of claim 1, wherein the flexible metal pipe (2) is cylindrical, has a length of 0.5 to 2.0 times the diameter of the composite rib (1), a wall thickness of 3 to 6mm, and an inner diameter of 0 to 2mm larger than the diameter of the composite rib (1).
7. The prestressed composite rib composite anchorage of claim 1, wherein said binder (4) is grouting material, and the compressive strength of said grouting material is not lower than 90 Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920052723.4U CN209891559U (en) | 2019-01-11 | 2019-01-11 | Prestressed composite bar composite anchorage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920052723.4U CN209891559U (en) | 2019-01-11 | 2019-01-11 | Prestressed composite bar composite anchorage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209891559U true CN209891559U (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920052723.4U Expired - Fee Related CN209891559U (en) | 2019-01-11 | 2019-01-11 | Prestressed composite bar composite anchorage |
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| Country | Link |
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| CN (1) | CN209891559U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838038A (en) * | 2019-01-11 | 2019-06-04 | 东南大学 | A kind of prestressing force answers material muscle composite anchorage and its forming method |
| CN112376803A (en) * | 2020-11-18 | 2021-02-19 | 南通装配式建筑与智能结构研究院 | FRP (fiber reinforced plastic) steel strand composite rib anchorage device and anchoring method |
-
2019
- 2019-01-11 CN CN201920052723.4U patent/CN209891559U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838038A (en) * | 2019-01-11 | 2019-06-04 | 东南大学 | A kind of prestressing force answers material muscle composite anchorage and its forming method |
| CN109838038B (en) * | 2019-01-11 | 2023-12-01 | 东南大学 | Prestressed composite bar composite anchorage and forming method thereof |
| CN112376803A (en) * | 2020-11-18 | 2021-02-19 | 南通装配式建筑与智能结构研究院 | FRP (fiber reinforced plastic) steel strand composite rib anchorage device and anchoring method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |