CN210713525U - High-strength wear-resistant slow-bonding prestressed steel strand - Google Patents
High-strength wear-resistant slow-bonding prestressed steel strand Download PDFInfo
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- CN210713525U CN210713525U CN201921004888.0U CN201921004888U CN210713525U CN 210713525 U CN210713525 U CN 210713525U CN 201921004888 U CN201921004888 U CN 201921004888U CN 210713525 U CN210713525 U CN 210713525U
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Abstract
The utility model discloses a wear-resisting slow bonding prestress wire of excel in, including steel strand wires, steel strand wires are the stranded, and during stranded steel strand wires penetrated the sheath, be provided with the adhesive layer that delays between steel strand wires, the sheath, form reinforcing and the fixed outer fixed knot structure that increases of outside concrete in the sheath. The outer fixing structure comprises an outer concave part and an outer convex part on the outer wall of the sheath, and the outer concave-convex structure enhances the biting force with external concrete. The utility model discloses in protect the steel strand wires through the sheath, solidify gradually through the slow setting adhesive layer simultaneously and fix sheath, steel strand wires, through the interlock of the outer convex part of sheath, outer concave part reinforcing and concrete, through interior concave part in the sheath, interior convex part reinforcing and steel strand wires's an organic whole nature, every outer concave part department outside the sheath sets up four symmetrical solid supporting, has promoted the wear resistance of slow bonding prestressed steel strand wires when the arrangement of reinforcement is under construction.
Description
Technical Field
The utility model belongs to the steel strand wires field, concretely relates to wear-resisting slow bonding prestress wire of excel in.
Background
The slow-bonding prestress technology combines two systems of unbonded prestress technology and bonded prestress technology, and has the advantages of earthquake resistance, good crack resistance, high strength, capability of acting after anchorage device failure, simple and convenient unbonded construction and flexible node arrangement.
However, the slow-bonding prestressed steel strand is easy to damage in construction, and has the phenomena of poor occlusion and embedment with concrete.
Disclosure of Invention
The utility model discloses a solve the problem that prior art exists and propose, its purpose provides a wear-resisting slow bonding prestress wire of excelling in.
The technical scheme of the utility model is that: the utility model provides a wear-resisting slow bonding prestressing force steel strand wires of excel in, includes the steel strand wires, the steel strand wires are the multifilament, and during the multifilament steel strand wires penetrated the sheath, be provided with the delayed coagulation adhesive layer between steel strand wires, the sheath, form reinforcing and the fixed outer fixed structure that increases of outside concrete in the sheath.
Preferably, the external reinforcing and fixing structure comprises external concave parts and external convex parts arranged at the outer wall of the sheath at intervals, and the external concave parts and the external convex parts form a continuous external concave-convex structure to enhance the engaging force with external concrete.
Preferably, an internal reinforcement fixing structure is formed in the sheath.
Preferably, the inner reinforcing and fixing structure comprises an inner concave part and an inner convex part on the inner wall of the sheath, the inner concave part and the inner convex part are arranged at intervals, and the inner concave part and the inner convex part form a continuous inner concave and convex structure to enhance filling of the retarding adhesive layer.
Preferably, the outer concave part corresponds to an inner convex part, and the outer convex part corresponds to an inner concave part.
Preferably, the outer wall of the sheath is further provided with longitudinal ribs along the length direction.
Preferably, the longitudinal rib has a rectangular cross section.
Preferably, a bearing is provided in the outer recess.
Preferably, the supports are equispaced along the outer wall of the sheath.
The utility model discloses in protect the steel strand wires through the sheath, solidify gradually through the slow setting adhesive layer simultaneously and fix sheath, steel strand wires, through the interlock of the outer convex part of sheath, outer concave part reinforcing and concrete, through interior concave part in the sheath, interior convex part reinforcing and steel strand wires's an organic whole nature, every outer concave part department outside the sheath sets up four symmetrical solid supporting, has promoted the wear resistance of slow bonding prestressed steel strand wires when the arrangement of reinforcement is under construction. The utility model discloses can use in public road bridge roof beam engineering and industry and civil buildings field, have high economic advantage.
Drawings
Fig. 1 is a schematic view of the present invention;
fig. 2 is a longitudinal sectional view of the present invention;
fig. 3 is a cross sectional view of a first embodiment of the present invention;
fig. 4 is a cross sectional view of a second embodiment of the present invention;
fig. 5 is a transverse sectional view of a third embodiment of the present invention;
wherein:
1 steel strand 2 delayed coagulation adhesive layer
3 sheath 4 external recess
5 outer convex part 6 longitudinal rib
7 support 8 inner recess
9 inner convex part.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples:
as shown in fig. 1-5, a high-strength wear-resistant slow-bonding prestressed steel strand comprises a steel strand 1, wherein the steel strand 1 is multi-wire, the multi-wire steel strand 1 penetrates into a sheath 3, a slow-setting adhesive layer 2 is arranged between the steel strand 1 and the sheath 3, and an external-reinforcement fixing structure for fixing reinforcing and external concrete is formed in the sheath 3.
The outer additional fixing structure comprises outer concave parts 4 and outer convex parts 5 on the outer wall of the sheath 3, the outer concave parts 4 and the outer convex parts 5 are distributed at intervals, and the outer concave parts 4 and the outer convex parts 5 form a continuous outer concave-convex structure to enhance the biting force with external concrete.
An internal reinforcing and fixing structure is formed in the sheath 3.
The internal reinforcing and fixing structure comprises an internal concave part 8 and an internal convex part 9 which are arranged on the inner wall of the sheath 3, the internal concave part 8 and the internal convex part 9 are arranged at intervals, and the internal concave part 8 and the internal convex part 9 form a continuous internal concave convex structure to enhance filling of the retarding adhesive layer 2.
The outer concave part 4 corresponds to an inner convex part 9, and the outer convex part 5 corresponds to an inner concave part 8.
The outer wall of the sheath 3 is also provided with longitudinal ribs 6 along the length direction.
The cross section of the longitudinal rib 6 is rectangular.
A bearing 7 is arranged in the outer recess 4.
The supports 7 are uniformly distributed along the outer wall of the sheath 3.
The delayed coagulation adhesive layer 2 is solidified within a preset time to reach a certain strength and is bonded with the prestressed steel strand 1 and the sheath 3 into a whole.
The retarding adhesive layer 2 is an epoxy adhesive material doped with thixotropic agent, diluent, curing agent and filler, and the retarding adhesive layer 2 has certain fluidity and good adhesiveness to the prestressed steel strand 1 at the initial stage.
The sheath 3 is made of High Density Polyethylene (HDPE) serving as a base resin, and a blending resin with polar groups, a reinforcing agent treated by a coupling agent and an accelerator are added.
The outer convex part 5 outside the sheath 3, namely the top of the outer transverse rib, is arc-shaped.
The delayed coagulation adhesive layer 2 has certain fluidity and good adhesiveness to steel materials at the early stage of construction, the sheath 3 is sleeved with the concave-convex outer concave part 4 and the convex outer convex part 5, the delayed coagulation adhesive layer 2 is gradually solidified along with the time and firmly bonded and occluded with the prestressed steel strand 1 and the sheath 3 into a whole, and then the delayed coagulation adhesive layer and the concrete produce an occlusion and embedding overall mechanical effect.
The sheath 3 has the function of preventing the delayed coagulation adhesive from dripping and leaking before curing, and has the function of joining the cured delayed coagulation adhesive layer 2 and concrete, so that the sheath is required to have higher strength, wear resistance and breakage resistance.
The support 7 can support the adjacent convex portion 5.
The arrangement of the steel strands 1 in the sheath is shown in figures 3-5.
The utility model discloses in protect the steel strand wires through the sheath, solidify gradually through the slow setting adhesive layer simultaneously and fix sheath, steel strand wires, through the interlock of the outer convex part of sheath, outer concave part reinforcing and concrete, through interior concave part in the sheath, interior convex part reinforcing and steel strand wires's an organic whole nature, every outer concave part department outside the sheath sets up four symmetrical solid supporting, has promoted the wear resistance of slow bonding prestressed steel strand wires when the arrangement of reinforcement is under construction. The utility model discloses can use in public road bridge roof beam engineering and industry and civil buildings field, have high economic advantage.
Claims (9)
1. The utility model provides a wear-resisting slow bonding prestress wire of high strength, includes steel strand (1), its characterized in that: the steel strand wires (1) are multi-filament, the multi-filament steel strand wires (1) penetrate into the sheath (3), a delayed coagulation adhesive layer (2) is arranged between the steel strand wires (1) and the sheath (3), and an external reinforcement fixing structure for fixing the reinforcing and external concrete is formed in the sheath (3).
2. The high-strength wear-resistant slow-bonding prestressed steel strand as claimed in claim 1, wherein: the external reinforcing and fixing structure comprises external concave parts (4) and external convex parts (5) on the outer wall of the sheath (3), the external concave parts (4) and the external convex parts (5) are arranged at intervals, and the external concave parts (4) and the external convex parts (5) form a continuous external concave-convex structure to reinforce the biting force with external concrete.
3. The high-strength wear-resistant slow-bonding prestressed steel strand as claimed in claim 2, wherein: an internal reinforcing and fixing structure is formed in the sheath (3).
4. The high-strength wear-resistant slow-bonding prestressed steel strand as claimed in claim 3, wherein: the internal reinforcing and fixing structure comprises an internal concave part (8) and an internal convex part (9) which are arranged on the inner wall of the sheath (3), the internal concave part (8) and the internal convex part (9) are arranged at intervals, and the internal concave part (8) and the internal convex part (9) form continuous filling of the internal concave and convex structure reinforcing slow-setting adhesive layer (2).
5. The high-strength wear-resistant slow-bonding prestressed steel strand as claimed in claim 4, wherein: the outer concave part (4) corresponds to the inner convex part (9), and the outer convex part (5) corresponds to the inner concave part (8).
6. The high-strength wear-resistant slow-bonding prestressed steel strand as claimed in claim 5, wherein: the outer wall of the sheath (3) is also provided with longitudinal ribs (6) along the length direction.
7. The high-strength wear-resistant slow-bonding prestressed steel strand as claimed in claim 6, wherein: the cross section of the longitudinal rib (6) is rectangular.
8. The high-strength wear-resistant slow-bonding prestressed steel strand as claimed in claim 7, wherein: a support (7) is arranged in the outer recess (4).
9. The high-strength wear-resistant slow-bonding prestressed steel strand as claimed in claim 8, wherein: the supports (7) are uniformly distributed along the outer wall of the sheath (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921004888.0U CN210713525U (en) | 2019-07-01 | 2019-07-01 | High-strength wear-resistant slow-bonding prestressed steel strand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921004888.0U CN210713525U (en) | 2019-07-01 | 2019-07-01 | High-strength wear-resistant slow-bonding prestressed steel strand |
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| Publication Number | Publication Date |
|---|---|
| CN210713525U true CN210713525U (en) | 2020-06-09 |
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| CN201921004888.0U Active CN210713525U (en) | 2019-07-01 | 2019-07-01 | High-strength wear-resistant slow-bonding prestressed steel strand |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111975926A (en) * | 2020-08-18 | 2020-11-24 | 东南大学 | 3D printed concrete slow-bonding prestress reinforcing member and preparation method thereof |
-
2019
- 2019-07-01 CN CN201921004888.0U patent/CN210713525U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111975926A (en) * | 2020-08-18 | 2020-11-24 | 东南大学 | 3D printed concrete slow-bonding prestress reinforcing member and preparation method thereof |
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