CN201738191U - Unbonded sheath type dowel bar - Google Patents
Unbonded sheath type dowel bar Download PDFInfo
- Publication number
- CN201738191U CN201738191U CN 201020260842 CN201020260842U CN201738191U CN 201738191 U CN201738191 U CN 201738191U CN 201020260842 CN201020260842 CN 201020260842 CN 201020260842 U CN201020260842 U CN 201020260842U CN 201738191 U CN201738191 U CN 201738191U
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- dowel bar
- concrete
- sheath
- dowel
- cap
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Abstract
The utility model relates to an unbonded sheath type dowel bar. The most ordinary dowel bar is fabricated on the construction site, and only the sliding end of the round bar is coated with asphalt for the second time and covered by a cap. The existing problems are as follows: the asphalt coating is not uniform and even can be lost, the cap is not standardized, on-site fabrication can pollute the environment, the quality of dowel bars is poor, and certain dowel bars are ineffective, which can cause the quality problem of expansion joints. An unbonded sheath is sleeved on the dowel bar, the telescopic sliding end of the dowel bar is arranged in a sheath cap, and a filling layer is arranged between the telescopic sliding end and the sheath cap; the dowel bar is arranged in the middle layer of concrete, the arrangement direction of the dowel bar is perpendicular to the expansion joint of concrete, and the position of the central point of the dowel bar is flushed with the expansion joint of concrete. The utility model is characterized in that the concrete structures at both sides of the expansion joint can be freely expanded and contracted and can reliably transfer shearing stress to each other, the fabrication cost is low, the structure is advanced, and the utility model has a broad application prospect.
Description
Technical field
The utility model belongs to the Communication and Transportation Engineering technical field, is specifically related to the nothing bonding protective-cover type dowel bar that a kind of Communication and Transportation Engineering ballastless track bed board or slab shrinkage joint place is provided with.
Background technology
Along with China Express Railway, subway unballasted track and highway concrete road surface technical development, the high ride on track and road surface, stability, life requirement improves constantly.Therefore, the dowel bar selection that is inevitable is set at plate seam place, the quantity of setting can get more and more.
Before this, various forms of dowel bars assentment and giving birth to, but the normally making at the construction field (site) of prevailing dowel bar, only an end secondary pitching material that need slide at round steel and at the termination cap bag.Existing problems are the inhomogeneous even disappearance of bituminous coating, lack of standardization, the field fabrication contaminated environment of cap bag, cause dowel bar with low quality, some can not play a role, and causes the shrinkage joint quality problems, particularly use under the dowel bar situations in a large number in the line project of growing up, problem is particularly outstanding.
The utility model content
It is capable of expansion and contraction that the technical problem that the utility model solved provides a kind of both sides, shrinkage joint concrete structure that makes, and transmits shear stress mutually and do not have bonding protective-cover type dowel bar reliably.
For solving above-mentioned technical problem, the technical scheme that the utility model is taked:
Special character of the present utility model is: the sheathed bonding sheath that has or not on the described dowel bar, and the flexible slippage end of dowel bar is set in the sleeve cap, and is provided with packed layer between the two; Described dowel bar is arranged on the concrete middle level, and the direction of its setting is vertical with concrete extension joint, and the point midway of dowel bar aligns with concrete shrinkage joint.
Be provided with lubricating layer between the bar wall of above-mentioned dowel bar and the nothing bonding sheath.
The length of above-mentioned dowel bar is 600 ~ 800mm, and not having the length of being stained with the knot sheath is 350 ~ 450mm.
The length of above-mentioned sleeve cap is 50 ~ 70mm, and the thickness of sleeve cap is 0.3 ~ 0.5mm.
The length of above-mentioned packed layer is 15 ~ 25mm.
The thickness of above-mentioned lubricating layer is 0.05 ~ 0.1mm.
Compared with prior art, the utility model can be laid at high-speed railway, city underground, light rail ballastless track bed board shrinkage joint and highway concrete road surface plate shrinkage joint and use; It is capable of expansion and contraction to have both sides, the shrinkage joint of making concrete structure, transmits characteristics such as shear stress is reliable mutually, cost economic, and structure advanced person has broad application prospects.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing of a-quadrant among Fig. 1.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Referring to Fig. 1,2, sheathed having or not is stained with knot sheath 2 on the dowel bar 1 of the present utility model, and the flexible slippage end of dowel bar 1 is set in the sleeve cap 3, and is provided with packed layer 4 between the two; Described dowel bar 1 is arranged on the concrete middle level, and the direction of its setting is vertical with concrete extension joint, and the mid point of dowel bar 1 aligns with the shrinkage joint.
Dowel bar 1 adopts φ 30 round steel, and steel grade adopts 45# or 40Cr carbon constructional quality steel, surperficial non-oxidation, and shaped article need be through removing FeO and Fe
2O
3, the antirust processing of phosphate is adopted on the surface, guarantees the dowel bar coating and does not have isometrical relatively, the uniform section at coating position.
The bar wall of dowel bar 1 and nothing are stained with between the knot sheath 2 and are provided with lubricating layer.
The length of dowel bar 1 is 600 ~ 800mm, and not having the length of being stained with knot sheath 2 is 350 ~ 450mm, do not have the bonding sheath and adopt polyethylene or acrylic resin,
The length of sleeve cap 3 is 50 ~ 70mm, the thickness of sleeve cap 3 is 1.2 ~ 2.0mm, sleeve cap 3 adopts polyethylene or rubber, and the flexible slippage end of dowel bar 1 and the packed layer between the sleeve cap 34 adopt polyethylene foam material, and sleeve cap 3 is taked leakproof, seepage control measure.
The length of packed layer 4 is 15 ~ 25mm.
The thickness of lubricating layer is 0.05 ~ 0.1mm, and lubricating layer adopts anti-corrosion grease.
Assembling of the present utility model:
1) dowel bar round steel design
Dowel bar round steel, surface be through removing FeO and Fe2O3, and adopt the antirust processing of phosphate, guarantees the dowel bar coating and do not have isometrical relatively, the uniform section at coating position.The round steel material is selected high-quality structural steel for use, and diameter is selected φ 30 for use, and material and diameter also can design according to requirement of engineering.
2) lubricating grease and sheath
Dowel bar round steel after surfacing needs sheath one end evenly to smear one deck anti-corrosion grease, the about 0.05 ~ 0.1mm of thickness, and suit polyethylene or acrylic resin sheath form does not then have bonding sheath, jacket thickness 0.3 ~ 0.5mm.
3) termination rubber (or PE) sleeve cap
Rubber (or PE) sleeve cap thickness 1.5mm, the thick polyethylene foam sheet of the about 20mm of filling in the length 60mm, sleeve cap, then sleeve cap being inserted in dowel bar does not have bonding sheath one end termination.
The dowel bar finished product outward appearance that assembles is clean and tidy, sheath and sleeve cap do not have breakage, have sheath one end to be flexible slippage end, and no sheath end is a fixed end, dowel bar is vertical with concrete extension joint, and aligns with the shrinkage joint and be cast in the concrete behind the middle level that is fixed on concrete slab in the middle part.
Claims (6)
1. one kind is not had bonding protective-cover type dowel bar, it is characterized in that: described dowel bar (1) is gone up the sheathed bonding sheath (2) that has or not, and the flexible slippage end of dowel bar (1) is set in the sleeve cap (3), and is provided with packed layer (4) between the two; Described dowel bar (1) is arranged on the concrete middle level, and the direction of its setting is vertical with concrete extension joint, and the point midway of dowel bar (1) aligns with concrete shrinkage joint.
2. a kind of nothing bonding protective-cover type dowel bar according to claim 1 is characterized in that: be provided with lubricating layer between the bar wall of described dowel bar 1 and the nothing bonding sheath (2).
3. a kind of nothing bonding protective-cover type dowel bar according to claim 1 and 2, it is characterized in that: the length of described dowel bar (1) is 600 ~ 800mm, not having the length of being stained with knot sheath (2) is 350 ~ 450mm.
4. a kind of nothing bonding protective-cover type dowel bar according to claim 3, it is characterized in that: the length of described sleeve cap (3) is 50 ~ 70mm, the thickness of sleeve cap (3) is 0.3 ~ 0.5mm.
5. a kind of nothing bonding protective-cover type dowel bar according to claim 4, it is characterized in that: the length of described packed layer (4) is 15 ~ 25mm.
6. a kind of nothing bonding protective-cover type dowel bar according to claim 5, it is characterized in that: the thickness of described lubricating layer is 0.05 ~ 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020260842 CN201738191U (en) | 2010-07-16 | 2010-07-16 | Unbonded sheath type dowel bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020260842 CN201738191U (en) | 2010-07-16 | 2010-07-16 | Unbonded sheath type dowel bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201738191U true CN201738191U (en) | 2011-02-09 |
Family
ID=43553470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020260842 Expired - Fee Related CN201738191U (en) | 2010-07-16 | 2010-07-16 | Unbonded sheath type dowel bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201738191U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612018A (en) * | 2014-12-25 | 2015-05-13 | 东南大学 | Dowel bar with combined structure for cement concrete pavements and durable stitch contracting structure |
| CN105229233A (en) * | 2012-02-04 | 2016-01-06 | 复合钢筋技术公司 | Multipart, composite highway dowel bar structure and manufacture method |
| CN110453564A (en) * | 2019-08-05 | 2019-11-15 | 驻马店市华中公路设计有限公司 | Road surface expansion joint (E.J.) connector and auxiliary construction equipment for the road surface expansion joint structure |
| CN112504645A (en) * | 2020-11-20 | 2021-03-16 | 昌河飞机工业（集团）有限责任公司 | Hard connection force transmission device with adjustable length |
-
2010
- 2010-07-16 CN CN 201020260842 patent/CN201738191U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105229233A (en) * | 2012-02-04 | 2016-01-06 | 复合钢筋技术公司 | Multipart, composite highway dowel bar structure and manufacture method |
| US10508390B2 (en) | 2012-02-04 | 2019-12-17 | Composite Rebar Technologies, Inc. | Plural-component, composite-material highway dowel bar fabrication methodology |
| CN104612018A (en) * | 2014-12-25 | 2015-05-13 | 东南大学 | Dowel bar with combined structure for cement concrete pavements and durable stitch contracting structure |
| CN104612018B (en) * | 2014-12-25 | 2016-06-08 | 东南大学 | A kind of cement concrete pavement combinative structure dowel steel and permanent seal cooling contracting crack structure |
| CN110453564A (en) * | 2019-08-05 | 2019-11-15 | 驻马店市华中公路设计有限公司 | Road surface expansion joint (E.J.) connector and auxiliary construction equipment for the road surface expansion joint structure |
| CN110453564B (en) * | 2019-08-05 | 2021-10-26 | 驻马店市华中公路设计有限公司 | Auxiliary construction equipment for pavement expansion joint structure |
| CN112504645A (en) * | 2020-11-20 | 2021-03-16 | 昌河飞机工业（集团）有限责任公司 | Hard connection force transmission device with adjustable length |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20180716 |