CN210976337U - High-strength high-toughness low-temperature-resistant prestressed steel bar anchor - Google Patents
High-strength high-toughness low-temperature-resistant prestressed steel bar anchor Download PDFInfo
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- CN210976337U CN210976337U CN201921316710.XU CN201921316710U CN210976337U CN 210976337 U CN210976337 U CN 210976337U CN 201921316710 U CN201921316710 U CN 201921316710U CN 210976337 U CN210976337 U CN 210976337U
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Abstract
The utility model discloses a resistant low temperature prestressed steel bar anchorage utensil of high strength high toughness belongs to ground tackle technical field, has solved the problem that prestressed anchorage utensil intensity, toughness are not enough among the prior art, the utility model discloses a backing plate, the backing plate has connected gradually nut end, solid fixed ring and anchor cup, it installs steel strand wires to run through in the anchor cup, the backing plate periphery is installed and is strengthened the device, strengthen the device and include the enhancement frame that inboard and backing plate are connected, be connected with the anchor frame on the enhancement frame, the anchor frame comprises the support frame of a plurality of palisades, all be connected with firm muscle between the support frame, still install the reinforcement ring in the fixed ring. The utility model discloses intensity is high, toughness is high, can prevent the low temperature influence.
Description
Technical Field
The utility model belongs to the technical field of the ground tackle, concretely relates to resistant low temperature prestressed steel bar anchorage utensil of high strength and high toughness.
Background
The anchorage device is a permanent anchorage device used in prestressed concrete, is an anchorage tool which is used in post-tensioning structure or member for maintaining the tensile force of prestressed reinforcement and transferring the tensile force to the interior of concrete, and is also called as a prestressed anchorage device.
When a prestressed concrete member is manufactured, a reinforcement cage is bound, a reserved corrugated pipe pipeline and a bearing body base plate are arranged, then concrete is poured, when the strength of the concrete member meets the design requirement, a steel strand is penetrated in the reserved pipeline, an inner bearing body, an outer bearing body, a high-strength clamping body, a limiting plate, a jack, a tool anchor plate, a tool clamping piece and the like are installed on the member, the steel strand is stretched by utilizing the jack, the limiting plate, the tool anchor and the like, oil return and unloading are carried out after the tensile force reaches a control value, the steel strand rebounds, the high-strength clamping body is brought into a taper hole of the inner bearing body, so that the steel strand is clamped, but in the rebounding process of the steel strand, a gap of about 6mm is generated between the inner bearing body and the bearing body base plate (namely the steel strand generates 6mm retraction amount), then secondary tensioning is carried out, and the outer bearing body is abutted against, the oil return is unloaded after the tensile force reaches the design value.
In the existing prestressed anchorage device, a finish-rolled screw-thread steel nut is screwed only by manual operation in the prestressed construction process, so that uncertainty is brought to anchorage, and if the operation is improper, the prestressed loss is very serious; the twisted steel is rigid, cannot be completely vertical to the anchor backing plate during installation, has low strength and insufficient toughness, and can generate overlarge anchoring deformation loss; in a low-temperature environment, the stability of the anchorage device is greatly influenced by the performance of steel, so that the prestress is obviously lost, and the low-temperature resistance of the existing prestressed anchorage device is obviously insufficient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a:
the high-strength high-toughness low-temperature-resistant prestressed steel bar anchor is provided for solving the problem that the strength and the toughness of the prestressed anchor in the prior art are insufficient.
The utility model adopts the technical scheme as follows:
the utility model provides a low temperature resistant prestressed steel bar anchor utensil of high strength and high toughness, includes the backing plate, the backing plate has connected gradually nut end, solid fixed ring and anchor cup, run through in the anchor cup and install steel strand wires, a serial communication port, the backing plate periphery is installed and is strengthened the device, strengthen the device and include the enhancement frame that inboard and backing plate are connected, be connected with the anchor frame on the enhancement frame, the anchor frame comprises the support frame of a plurality of palisades, all be connected with firm muscle between the support frame, still install in the fixed ring and strengthen the restraint ring.
Furthermore, a protective cover is arranged outside the fixing ring and the anchor cup and connected with the nut end.
Furthermore, a prestress retaining device is installed at the other end, far away from the anchor cup, of the steel strand, the prestress retaining device comprises an end cover installed at the end of the steel strand, and a tensioning nut is installed on the steel strand in the end cover.
Furthermore, a clamping ring is further installed between the tensioning nut and the steel strand, and threads matched with the tensioning nut are arranged on the outer surface of the clamping ring.
Furthermore, the surface of the steel strand is covered with a waterproof layer, and the waterproof layer is composed of an HDPE protective layer.
The working principle of the utility model is as follows:
the utility model discloses a prestressed anchorage utensil is through installing additional on the backing plate and strengthening frame and anchor frame, makes the intensity after the ground tackle installation obtain showing and promotes, and the safety cover can completely cut off certain debris and corrode and high low temperature influence to guarantee that the intensity of ground tackle can not descend, keep high strength and high tenacity always, the utility model discloses creatively designed the structure of two stretch-draw of steel strand wires, made the prestressing force further improve, the at utmost has exerted the intensity and the toughness of material.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses an installation reinforcement frame, reinforcement frame are gone up to installation anchor frame on the backing plate, have promoted the intensity of prestressed anchorage utensil effectively, and the support frame of paliform makes the atress of backing plate disperse more, thereby has effectively avoided the backing plate material to reach stress limit deformation under the prestressing force, has both guaranteed intensity, has avoided the ground tackle to damage again, and strengthens the bundle ring and can further promote the pulling force of ground tackle to steel strand wires, improves stability.
2. The utility model discloses a safety cover can completely cut off the impurity erosion and the high low temperature infringement of ground tackle surrounding environment, thereby prevent that the material of ground tackle from losing prestressing force or even ground tackle damage because of reasons such as corruption, improved the security.
3. The utility model discloses a prestressing force holding device makes steel strand wires both sides all by stretch-draw, and the opposite side uses tensioning nut, with the prestressing force dispersion to both sides that the ground tackle bore, has reduced the prestressing force that the ground tackle received, also enables the adjustable upper limit increase of prestressing force simultaneously, makes the service condition of ground tackle more nimble, can exert intensity and toughness of each part material to bigger degree.
4. The utility model discloses a grip ring can protect the steel strand wires surface, avoids the screw thread of nut to destroy the steel strand wires, also has the clamping action to the steel strand wires simultaneously, makes it keep certain pulling force prestressing force, makes the structure more reasonable.
5. The utility model discloses a HDPE protective layer can protect the steel strand wires not corroded by moisture, avoids it to take place the condition such as corrosion and reduces material strength, prevents loss prestressing force.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a block diagram of the present invention;
fig. 2 is a structural view of the backing plate of fig. 1.
Description of reference numerals:
1-steel strand, 2-anchor cup, 3-fixing ring, 4-nut end, 5-backing plate, 6-spiral rib, 7-spring, 8-protective cover, 9-protective layer, 10-prestress holding device, 11-end cover, 12-tensioning nut, 13-reinforcing beam ring, 14-reinforcing frame and 15-anchor frame.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to fig. 1 and 2.
Example 1
The embodiment as a basis:
the utility model provides a low temperature resistant prestressing steel bar anchor utensil of high strength high toughness, including backing plate 5, backing plate 5 has connected gradually nut end 4, solid fixed ring 3 and anchor cup 2, run through in the anchor cup 2 and install steel strand wires 1, a serial communication port, the reinforcing means is installed to backing plate 5 periphery, strengthen the device and include inboard reinforcing frame 14 of being connected with backing plate 5, be connected with anchor frame 15 on the reinforcing frame 14, anchor frame 15 comprises the support frame of a plurality of palisades, all be connected with firm muscle between the support frame, gu still install in the fixed ring 3 and strengthen restraint ring 13.
The utility model discloses an installation anchor frame 15 on installation strengthening frame 14, strengthening frame 14 on backing plate 5 has promoted the intensity of prestressed anchorage utensil effectively, and the support frame of paliform makes backing plate 5's atress disperse more, thereby has effectively avoided backing plate 5 material to reach the stress limit under the prestressing force and warp, has both guaranteed intensity, has avoided the ground tackle to damage again, and strengthens the pulling force that the collar 13 can further promote ground tackle to steel strand wires 1, improves stability.
Example 2
In this embodiment, the emphasis is on the improvement compared with the above embodiment, and the same parts will not be described again, in this embodiment, the fixing ring 3 and the anchor cup 2 are externally provided with the protecting cover 8, and the protecting cover 8 is connected with the nut end 4. The utility model discloses a safety cover 8 can completely cut off the impurity erosion and the high low temperature infringement of ground tackle surrounding environment, thereby prevent that the material of ground tackle from losing prestressing force or even ground tackle damage because of reasons such as corruption, improved the security.
Example 3
In this embodiment, a prestress holding device 10 is installed at the other end of the steel strand 1 away from the anchor cup 2, the prestress holding device 10 includes an end cover 11 installed at the end of the steel strand 1, a tensioning nut 12 is installed on the steel strand 1 in the end cover 11, a clamping ring is further installed between the tensioning nut 12 and the steel strand 1, a thread matched with the tensioning nut 12 is arranged on the outer surface of the clamping ring, a waterproof layer is installed on the surface of the steel strand 1 in a covering manner, and the waterproof layer is composed of an HDPE protective layer 9.
The utility model discloses a prestressing force retaining device 10 makes 1 both sides of steel strand wires all by stretch-draw, and the opposite side uses tensioning nut 12, with the prestressing force dispersion to both sides that the ground tackle bore, has reduced the prestressing force that the ground tackle received, also enables the adjustable upper limit of prestressing force to increase simultaneously, makes the service condition of ground tackle more nimble, can exert intensity and the toughness of each part material to a bigger degree. The clamping ring can protect the surface of the steel strand 1, the steel strand 1 is prevented from being damaged by the threads of the nut, and the steel strand 1 is clamped by the clamping ring, so that certain tension prestress is kept, and the structure is more reasonable. The HDPE protective layer 9 can protect the steel strand 1 from being corroded by water, prevent the steel strand from being corroded, reduce the strength of the material and prevent the loss of prestress.
Claims (5)
1. The utility model provides a low temperature resistant prestressing steel bar anchor utensil of high strength and high toughness, includes backing plate (5), backing plate (5) have connected gradually nut end (4), solid fixed ring (3) and anchor cup (2), run through in anchor cup (2) and install steel strand wires (1), a serial communication port, backing plate (5) periphery is installed and is strengthened the device, strengthen reinforcement frame (14) that the device includes inboard and backing plate (5) are connected, be connected with anchor frame (15) on reinforcement frame (14), anchor frame (15) comprise the support frame of a plurality of fences form, all be connected with firm muscle between the support frame, still install in solid fixed ring (3) and strengthen restraint ring (13).
2. The high-strength high-toughness low-temperature-resistant prestressed steel bar anchor tool is characterized in that a protective cover (8) is arranged outside the fixing ring (3) and the anchor cup (2), and the protective cover (8) is connected with the nut end (4).
3. The high-strength high-toughness low-temperature-resistant prestressed steel bar anchor tool is characterized in that the other end, far away from the anchor cup (2), of the steel strand (1) is provided with a prestress holding device (10), the prestress holding device (10) comprises an end cover (11) arranged at the end part of the steel strand (1), and a tensioning nut (12) is arranged on the steel strand (1) in the end cover (11).
4. The high-strength high-toughness low-temperature-resistant prestressed steel bar anchor tool is characterized in that a clamping ring is further installed between the tensioning nut (12) and the steel strand (1), and the outer surface of the clamping ring is provided with threads matched with the tensioning nut (12).
5. The high-strength high-toughness low-temperature-resistant prestressed steel bar anchor tool as claimed in claim 1, wherein a waterproof layer is covered and installed on the surface of the steel strand (1), and the waterproof layer is composed of an HDPE protective layer (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921316710.XU CN210976337U (en) | 2019-08-14 | 2019-08-14 | High-strength high-toughness low-temperature-resistant prestressed steel bar anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921316710.XU CN210976337U (en) | 2019-08-14 | 2019-08-14 | High-strength high-toughness low-temperature-resistant prestressed steel bar anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210976337U true CN210976337U (en) | 2020-07-10 |
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ID=71420066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921316710.XU Active CN210976337U (en) | 2019-08-14 | 2019-08-14 | High-strength high-toughness low-temperature-resistant prestressed steel bar anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210976337U (en) |
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2019
- 2019-08-14 CN CN201921316710.XU patent/CN210976337U/en active Active
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