CN214882694U - Continuous reinforced concrete pavement induced cracking device for template construction - Google Patents
Continuous reinforced concrete pavement induced cracking device for template construction Download PDFInfo
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- CN214882694U CN214882694U CN202121461945.5U CN202121461945U CN214882694U CN 214882694 U CN214882694 U CN 214882694U CN 202121461945 U CN202121461945 U CN 202121461945U CN 214882694 U CN214882694 U CN 214882694U
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- induced cracking
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Abstract
The utility model discloses a continuous reinforced concrete pavement induced cracking device for template construction, which comprises a construction template, wherein the construction template is provided with a hole for installing a transverse reinforcing steel bar; the device also comprises an induced cracking piece, a gap matched with the induced cracking piece is further arranged on the construction template, and the induced cracking piece is arranged to ensure that the induced gap appears on the continuous reinforced concrete pavement at the position of the induced cracking piece, so that the crack of the continuous reinforced concrete pavement is fixed, and the diseases of the continuous reinforced concrete slab are reduced. In addition, the positions of the induced cracking piece and the transverse steel bar are kept consistent, so that the condition that cracks are generated at the positions of the induced cracking piece and the transverse steel bar at the same time due to the fact that the positions of the induced cracking piece and the transverse steel bar are different is avoided, and the concrete slab is prevented from being broken due to too close crack intervals.
Description
Technical Field
The utility model relates to a road construction field, concretely relates to induced fracture device of continuous reinforced concrete road surface for template construction.
Background
The Continuous Reinforced Concrete Pavement (CRCP) is a pavement structure with longitudinally arranged continuous reinforcing steel bars and transversely arranged no shrinkage joints, overcomes the driving discomfort and various diseases caused by the existence of numerous joints of a common concrete slab, forms a long-section flat driving surface, has the advantages of strong bearing capacity, good integrity, long service life and less maintenance, and is one of the main structural forms of the pavement with long service life under the current environment and conditions of China.
The continuous reinforced concrete pavement can generate a plurality of random transverse cracks under the action of temperature shrinkage and drying shrinkage because of longitudinal continuous reinforcing steel bars and transverse no shrinkage joints and expansion joints, and the crack width is very small because of the constraint action of the reinforcing steel bars, so that the load transmission can be ensured, and the reinforcing steel bars are prevented from being corroded and the base layer is prevented from being corroded due to the invasion of rainwater.
When the continuous reinforced concrete pavement is paved, the concrete is not like common concrete, the crack position is controlled by sawing, but the concrete crack is freely generated, so that after the concrete is poured, the form, the width and the interval of the crack generated under the action of temperature shrinkage and drying shrinkage are uneven, and when the interval of the crack is too small, the probability of the pavement damage is greatly increased. If the crack spacing could be controlled manually so that the crack spacing is controlled at the desired appropriate level, the failure of the continuous reinforced concrete slab due to too small a crack spacing would be greatly reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a induced fracture device of continuous reinforced concrete road surface for template construction, the crack interval of the continuous reinforced concrete road surface of control reduces continuous reinforced concrete slab's disease.
The utility model provides a continuous reinforced concrete pavement induced cracking device for template construction, which comprises a construction template, wherein the construction template is provided with a hole for installing a transverse steel bar;
the device also comprises an induced cracking piece, and a gap matched with the induced cracking piece is also arranged on the construction template.
Preferably, the crack inducing member is elongated.
Preferably, the crack inducing member is a sheet coated with a release agent.
Preferably, the slit is located directly above or below the hole so that the crack inducing member is positioned in line with the transverse reinforcement.
Preferably, when the spacing of the transverse reinforcing bars is a, the spacing of the crack inducing members is nb, wherein n is a positive integer.
Preferably, the slits are fixedly arranged at intervals in the direction of travel of the road.
The utility model has the advantages that:
(1) by arranging the induced cracking piece, the continuous reinforced concrete pavement is ensured to have an induced joint at the position of the induced cracking piece, so that the crack of the continuous reinforced concrete pavement is fixed, and the diseases of a continuous reinforced concrete slab are reduced;
(2) the positions of the induced cracking piece and the transverse steel bar are kept consistent, so that the phenomenon that cracks are generated at the same time at the positions of the induced cracking piece and the transverse steel bar due to the fact that the positions of the induced cracking piece and the transverse steel bar are different, and the concrete slab impact damage is generated due to too close crack intervals is avoided;
(3) the isolating agent is smeared on the induced cracking piece of the induced cracking device, so that the induced cracking piece and the concrete layer are prevented from being adhered, the induced cracking device is convenient to reuse, and the economy of the induced cracking technology is ensured.
Drawings
Fig. 1 is a perspective view of a continuous reinforced concrete slab and an induced cracking apparatus according to an embodiment of the present invention.
Fig. 2 is a top view of a continuous reinforced concrete slab and an induced cracking device according to an embodiment of the present invention.
Fig. 3 is a front view of a continuous reinforced concrete slab and crack induction device according to an embodiment of the present invention.
Fig. 4 is a side view of a continuous reinforced concrete slab and crack inducing apparatus according to an embodiment of the present invention.
In the figure: 1-induced cracking piece, 2-construction template, 3-longitudinal steel bar and 4-transverse steel bar.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
the utility model provides an induced fracture device of continuous reinforced concrete road surface suitable for template construction makes continuous reinforced concrete slab produce the crack in induced fracture 1 department, reduces continuous reinforced concrete slab's disease. Meanwhile, the device can be repeatedly used, the using amount of the induced cracking device is reduced, and the economy of the induced cracking technology is ensured.
The continuous reinforced concrete pavement induced cracking device for template construction, disclosed by the embodiment of the utility model, as shown in the figures 1-4, comprises a construction template 2, wherein the construction template 2 is provided with a hole for installing a transverse steel bar 4; the device also comprises an induced cracking piece 1, and a gap matched with the induced cracking piece 1 is also arranged on the construction template 2. By arranging the induced cracking piece 1, the induced crack of the continuous reinforced concrete pavement at the position of the induced cracking piece 1 is ensured to be fixed, so that the damage of the continuous reinforced concrete slab is reduced.
In the present embodiment, a sheet coated with a release agent is used as the crack-inducing member 1. And arranging a gap on the construction template 1 at intervals along the road advancing direction, ensuring that the gap is aligned with the transverse steel bar 4, and installing the induced cracking piece 1 to the gap. Because the thickness of the concrete layer at the position of the transverse steel bar 4 is reduced, the transverse steel bar is a weak position and is easy to generate transverse cracks. If the induced cracking piece 1 is arranged at the position of the transverse steel bar 4, the weak surface at the transverse steel bar can be enlarged, and the regularity of crack generation is ensured.
When the strength of the concrete is formed, the thin sheet is pulled out, so that the continuous reinforced concrete plate can generate cracks at the crack inducing part 1. In addition, the induced cracking piece 1 is coated with an isolating agent, so that the induced cracking piece and the concrete layer are prevented from being adhered, and the induced cracking piece 1 can be repeatedly utilized. The induced cracking piece 1 can be made of iron sheets, aluminum sheets, steel sheets and the like which are most common and most economical; the material which is easy to decompose can be selected, and after a certain time, the induced cracking piece 1 is decomposed or corroded to disappear, so that the purpose can be achieved.
Preferably, when the spacing of the transverse reinforcing bars is b, the spacing of the crack-inducing pieces is a-nb, where n is a positive integer.
The specific use method is as follows:
and a vertical gap is arranged on the continuous reinforced concrete layer construction template 2 along the road advancing direction at intervals of a, and the gap is positioned under the transverse steel bar hole. The width and height of which are consistent with those of the continuous reinforced concrete slab induced cracking piece 1. After the construction of the base layer of the continuous reinforced concrete pavement is finished, a continuous reinforced concrete layer construction template 2 with gaps is erected, transverse reinforcing steel bars 4 and longitudinal reinforcing steel bars 3 are erected by utilizing the continuous reinforced concrete layer construction template 2, and the induced cracking piece 1 coated with the isolating agent penetrates through the gaps of the two templates and is erected below the transverse reinforcing steel bars 4. And pouring concrete, and drawing out the induced cracking piece 1 when the strength of the concrete is formed so as to recycle the concrete.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A continuous reinforced concrete pavement induced cracking device for template construction is characterized by comprising a construction template, wherein the construction template is provided with a hole for installing a transverse steel bar;
the device also comprises an induced cracking piece, and a gap matched with the induced cracking piece is also arranged on the construction template.
2. The apparatus for inducing cracks in a continuous reinforced concrete pavement for formwork construction as claimed in claim 1, wherein the inducing cracking member is in the shape of a long strip.
3. The continuous reinforced concrete pavement crack inducing device for formwork construction as claimed in claim 1, wherein the crack inducing member is a sheet coated with a release agent.
4. The apparatus of claim 1, wherein the gap is located directly above or below the hole to align the inducing crack with the transverse reinforcement.
5. The apparatus for inducing cracks in a continuous reinforced concrete pavement for formwork construction as claimed in claim 4, wherein when the pitch of the transverse reinforcing bars is a, the pitch of the inducing cracks is nb, where n is a positive integer.
6. The continuous reinforced concrete pavement crack inducing apparatus for form work as claimed in claim 1, wherein the slits are fixedly provided at intervals along a traveling direction of the pavement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121461945.5U CN214882694U (en) | 2021-06-30 | 2021-06-30 | Continuous reinforced concrete pavement induced cracking device for template construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121461945.5U CN214882694U (en) | 2021-06-30 | 2021-06-30 | Continuous reinforced concrete pavement induced cracking device for template construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214882694U true CN214882694U (en) | 2021-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121461945.5U Active CN214882694U (en) | 2021-06-30 | 2021-06-30 | Continuous reinforced concrete pavement induced cracking device for template construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214882694U (en) |
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2021
- 2021-06-30 CN CN202121461945.5U patent/CN214882694U/en active Active
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