CN217582156U - Anti-bending cushion layer of roadway bottom plate - Google Patents
Anti-bending cushion layer of roadway bottom plate Download PDFInfo
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- CN217582156U CN217582156U CN202221541658.XU CN202221541658U CN217582156U CN 217582156 U CN217582156 U CN 217582156U CN 202221541658 U CN202221541658 U CN 202221541658U CN 217582156 U CN217582156 U CN 217582156U
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- 238000005452 bending Methods 0.000 title claims abstract description 35
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 194
- 239000004568 cement Substances 0.000 claims abstract description 24
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000005728 strengthening Methods 0.000 description 43
- 238000005253 cladding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000010883 coal ash Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 241000124033 Salix Species 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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Abstract
The utility model provides a bending-resistant cushion layer of a roadway bottom plate. The bending-resistant cushion layer of the roadway floor comprises: the reinforcing ribs are arranged along at least three directions, and the three directions are vertical to each other; the concrete layer is formed by pouring concrete on the reinforcing ribs, one end of each reinforcing rib in at least one direction is coated by the concrete layer, and the other end of each reinforcing rib is connected with the roadway bottom plate; and the cement layer is arranged on the concrete layer and is positioned on one side, which is not exposed, of the reinforcing rib. The utility model provides a tunnel bottom plate among the prior art have the problem of uplift and deformation.
Description
Technical Field
The utility model relates to a mining engineering technical field particularly, relates to a tunnel bottom plate's bending resistance bed course.
Background
In the field of mining engineering, a waterproof coal ash roadway is mainly characterized in that due to the fact that the lithology of a bottom plate of the roadway is mudstone and silty mudstone, the bottom plate of the roadway is seriously argillized when meeting water or generating bottom heaving, the bending of the bottom plate of the roadway is a form of the bottom heaving, the bottom plate of the argillaceous or mudstone is soaked by water in a penetrating manner to expand, the bottom plate of the roadway is enabled to be raised under the pressure of the roadway, the transportation and the passing of the roadway are affected, and the roadway can be seriously blocked.
That is, the tunnel floor in the prior art has a problem of swelling and deformation.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a bending-resistant cushion for a tunnel bottom plate to solve the problem of the tunnel bottom plate in the prior art that has a bulge and a deformation.
In order to achieve the above object, the utility model provides a tunnel bottom plate's bending resistance bed course, include: the reinforcing ribs are arranged along at least three directions, and the three directions are vertical to each other; the concrete layer is formed by pouring concrete on the reinforcing ribs, one end of each reinforcing rib in at least one direction is coated by the concrete layer, and the other end of each reinforcing rib is connected with the roadway bottom plate; and the cement layer is arranged on the concrete layer and is positioned on one side, which is not exposed, of the reinforcing rib.
Further, a plurality of strengthening ribs include vertical strengthening rib, first horizontal strengthening rib and the horizontal strengthening rib of second, and the one end of vertical strengthening rib is by concrete layer cladding, and the other end of vertical strengthening rib inserts the tunnel bottom plate perpendicularly, and vertical strengthening rib, first horizontal strengthening rib and the two liang of perpendicular settings of the horizontal strengthening rib of second.
Furthermore, the vertical reinforcing ribs, the first horizontal reinforcing ribs and the second horizontal reinforcing ribs are welded and fixed.
Furthermore, the number of the vertical reinforcing ribs, the number of the first horizontal reinforcing ribs and the number of the second horizontal reinforcing ribs are multiple, the vertical reinforcing ribs are arranged at intervals along the extending direction of the first horizontal reinforcing ribs and the extending direction of the second horizontal reinforcing ribs respectively, and multiple rows of vertical reinforcing ribs arranged along the extending direction of the second horizontal reinforcing ribs are welded with the first horizontal reinforcing ribs in a one-to-one correspondence manner; and/or a plurality of rows of vertical reinforcing ribs arranged along the extending direction of the first horizontal reinforcing ribs are welded with the plurality of second horizontal reinforcing ribs in a one-to-one correspondence manner.
Furthermore, the second horizontal reinforcing rib is located the one side that tunnel bottom plate was kept away from to first horizontal reinforcing rib, and the perpendicular welded fastening of second horizontal reinforcing rib and first horizontal reinforcing rib.
Further, the distance between two adjacent vertical reinforcing ribs in the plurality of vertical reinforcing ribs is more than or equal to 38 centimeters and less than or equal to 42 centimeters; and/or the distance between two adjacent first horizontal reinforcing ribs in the plurality of first horizontal reinforcing ribs is more than or equal to 38 centimeters and less than or equal to 42 centimeters; and/or the distance between two adjacent second horizontal reinforcing ribs in the plurality of second horizontal reinforcing ribs is more than or equal to 38 centimeters and less than or equal to 42 centimeters.
Further, the distance between two adjacent vertical reinforcing ribs in the plurality of vertical reinforcing ribs is equal, the distance between two adjacent first horizontal reinforcing ribs in the plurality of first horizontal reinforcing ribs is equal, and the distance between two adjacent second horizontal reinforcing ribs in the plurality of second horizontal reinforcing ribs is equal.
Further, the diameters of the vertical reinforcing ribs, the first horizontal reinforcing ribs and the second horizontal reinforcing ribs are the same.
Further, the surface of one side of the concrete layer facing the cement layer is wavy.
Further, the surface of the cement layer is a rough plane.
Furthermore, the length of the vertical reinforcing ribs inserted into the roadway bottom plate is more than or equal to 5 cm.
Further, the thickness of the concrete layer is more than or equal to 15 cm; and/or the thickness of the cement layer is greater than or equal to 5 cm.
By applying the technical scheme of the utility model, the anti-bending cushion layer of the tunnel bottom plate comprises a plurality of reinforcing ribs, a concrete layer and a cement layer, the plurality of reinforcing ribs are arranged along at least three directions, and every two of the three directions are vertical; pouring concrete on the reinforcing ribs to form a concrete layer, wherein one end of each reinforcing rib in at least one direction is coated by the concrete layer, and the other end of each reinforcing rib is connected with the roadway bottom plate; the cement layer is arranged on the concrete layer and is positioned on the side where the reinforcing ribs are not exposed.
Through the strengthening rib that sets up at least three direction, and pour the concrete and form concrete layer on a plurality of strengthening ribs, the one end of the strengthening rib of at least one direction is by the concrete layer cladding, the other end is connected with the tunnel bottom plate, make the strengthening rib play support and reinforced (rfd) effect to the tunnel bottom plate, the condition that makes the tunnel bottom plate uplift under tunnel pressure has been avoided to the hardening intensity of cooperation concrete layer simultaneously, the risk of tunnel bottom plate emergence deformation has been avoided, the structural strength and the structural stability of tunnel bottom plate have been guaranteed, the condition of tunnel jam has further been avoided simultaneously, tunnel transportation and current smooth and easy nature have been increased. Two liang of vertically forms are set to through the three direction with the strengthening rib for the pressure that the balancing that the strengthening rib of three direction can be better received, greatly increased the support intensity of bending resistance bed course, can reduce the tunnel bottom plate when cooperating with the tunnel bottom plate and take place the possibility that the pucking leads to the bottom plate crooked when the bending resistance bed course. And meanwhile, the cement layer is arranged on the concrete layer and is positioned on one side where the reinforcing ribs are not exposed, so that the overall strength of the anti-bending cushion layer can be further increased by the cement layer, and the anti-deformation capability of the anti-bending cushion layer is ensured.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:
fig. 1 shows a schematic structural view of a bending-resistant cushion layer of a roadway floor according to an alternative embodiment of the present invention;
fig. 2 shows a schematic view of another angle of the anti-buckling cushion of the roadway floor of fig. 1;
FIG. 3 is a diagram showing the fit relationship of the vertical reinforcing ribs, the first horizontal reinforcing ribs and the second horizontal reinforcing ribs;
fig. 4 shows a matching relationship diagram of a set of vertical reinforcing ribs, a first horizontal reinforcing rib and a second horizontal reinforcing rib.
Wherein the figures include the following reference numerals:
11. a vertical reinforcing rib; 12. a first horizontal reinforcing rib; 13. a second horizontal reinforcing rib; 20. a concrete layer; 30. and (5) a cement layer.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; similarly, "inner and outer" refer to the inner and outer relative to the contours of the components themselves for ease of understanding and description, but the above directional terms are not intended to limit the invention.
In order to solve the problem that there are uplift and deformation in the tunnel bottom plate among the prior art, the utility model provides a tunnel bottom plate's bending resistance bed course.
As shown in fig. 1 to 4, the anti-bending cushion layer of the roadway floor comprises a plurality of reinforcing ribs, a concrete layer 20 and a cement layer 30, wherein the plurality of reinforcing ribs are arranged along at least three directions, and every two of the three directions are perpendicular; pouring concrete on the plurality of reinforcing ribs to form a concrete layer 20, wherein one end of each reinforcing rib in at least one direction is coated by the concrete layer 20, and the other end of each reinforcing rib is connected with the roadway bottom plate; the cement layer 30 is disposed on the concrete layer 20 and on the unexposed side of the reinforcing bars.
Through the strengthening rib that sets up at least three direction, and pour the concrete and form concrete layer 20 on a plurality of strengthening ribs, the one end of the strengthening rib of at least one direction is by concrete layer 20 cladding, the other end is connected with the tunnel bottom plate, make the strengthening rib play support and reinforced (rfd) effect to the tunnel bottom plate, the condition that makes the tunnel bottom plate uplift has been avoided under tunnel pressure to the sclerosis intensity of cooperation concrete layer 20 simultaneously, the risk of deformation has been avoided taking place to the tunnel bottom plate, the structural strength and the structural stability of tunnel bottom plate have been guaranteed, the condition of tunnel jam has further been avoided simultaneously, tunnel transportation and current smooth and easy nature have been increased. Two liang of vertically forms are set to through the three direction with the strengthening rib for the pressure that the balancing that the strengthening rib of three direction can be better received, greatly increased the support intensity of bending resistance bed course, can reduce the tunnel bottom plate when cooperating with the tunnel bottom plate and take place the possibility that the pucking leads to the bottom plate crooked when the bending resistance bed course. Meanwhile, the cement layer 30 is arranged on the concrete layer 20 and is positioned on the side where the reinforcing ribs are not exposed, so that the overall strength of the anti-bending cushion layer can be further increased by the cement layer 30, and the anti-deformation capacity of the anti-bending cushion layer is ensured.
It should be noted that the roadway floor is a water-proof coal ash roadway floor.
As shown in fig. 1 and 3, the plurality of reinforcing ribs include a vertical reinforcing rib 11, a first horizontal reinforcing rib 12 and a second horizontal reinforcing rib 13, one end of the vertical reinforcing rib 11 is covered by a concrete layer 20, the other end of the vertical reinforcing rib 11 is vertically inserted into a roadway bottom plate, the roadway bottom plate is not shown in the figure, the vertical reinforcing rib 11, the first horizontal reinforcing rib 12 and the second horizontal reinforcing rib 13 are vertically arranged in pairs, and the vertical reinforcing rib 11, the first horizontal reinforcing rib 12 and the second horizontal reinforcing rib 13 are fixedly connected by welding; that is to say, the vertical reinforcing rib 11 and the first horizontal reinforcing rib 12 are perpendicular and welded, the first horizontal reinforcing rib 12 and the second horizontal reinforcing rib 13 are perpendicular and welded, and the vertical reinforcing rib 11 and the second horizontal reinforcing rib 13 are perpendicular and welded. Set up like this and make vertical strengthening rib 11, concrete layer 20 above that is watered in the cooperation of first horizontal strengthening rib 12 and second horizontal strengthening rib 13, the two stiffening strength that combines together that can greatly increased, make the bending-resistant bed course have good support nature and anti deformability, can carry out fine reinforcement and support to the tunnel bottom plate, antagonism that can be good and alleviate tunnel bottom plate pucking phenomenon, thereby can increase the bending resistance of tunnel bottom plate, make the condition that the pucking appears in the tunnel bottom plate can obtain effectually alleviating, in order to guarantee safety in production.
As shown in fig. 3, a plurality of vertical reinforcing ribs 11, a plurality of first horizontal reinforcing ribs 12 and a plurality of second horizontal reinforcing ribs 13 are provided, and the plurality of vertical reinforcing ribs 11 are respectively arranged at intervals along the extending direction of the first horizontal reinforcing ribs 12 and the extending direction of the second horizontal reinforcing ribs 13, so that the plurality of vertical reinforcing ribs 11 form a similar matrix arrangement mode; a plurality of rows of vertical reinforcing ribs 11 arranged along the extending direction of the second horizontal reinforcing rib 13 are welded with a plurality of first horizontal reinforcing ribs 12 in a one-to-one correspondence manner, that is, a row of vertical reinforcing ribs 11 is welded with one first horizontal reinforcing rib 12, and each vertical reinforcing rib 11 in the row is welded with one corresponding first horizontal reinforcing rib 12; a plurality of rows of vertical reinforcing ribs 11 arranged along the extending direction of the first horizontal reinforcing rib 12 are welded with a plurality of second horizontal reinforcing ribs 13 in a one-to-one correspondence manner; that is, one column of the vertical reinforcing ribs 11 is welded to one second horizontal reinforcing rib 13, and each vertical reinforcing rib 11 in one column is welded to the corresponding second horizontal reinforcing rib 13.
As shown in fig. 4, the second horizontal reinforcing rib 13 is located on one side of the first horizontal reinforcing rib 12 away from the roadway floor, the second horizontal reinforcing rib 13 is located on the upper side of the first horizontal reinforcing rib 12 and is welded and fixed, the second horizontal reinforcing rib 13 is located on the right side of the vertical reinforcing rib 11 and is welded and fixed with the vertical reinforcing rib, and the second horizontal reinforcing rib 13 is welded and fixed with the first horizontal reinforcing rib 12 vertically.
Specifically, before construction, holes with the depth not less than five centimeters are formed in the roadway bottom plate at equal intervals according to the measured distance, then the vertical reinforcing ribs 11 are inserted into the holes, the vertical reinforcing ribs 11 in the same row are welded and fixed by the aid of the first horizontal reinforcing ribs 12 vertically arranged with the vertical reinforcing ribs, then the vertical reinforcing ribs 11 in the same row are welded and fixed by the aid of the second horizontal reinforcing ribs 13, and the lower sides of the second horizontal reinforcing ribs 13 are welded and fixed with the first horizontal reinforcing ribs 12.
Then, pouring a concrete layer 20 on the vertical reinforcing ribs 11, the first horizontal reinforcing ribs 12 and the second horizontal reinforcing ribs 13, after the vertical reinforcing ribs 11, the first horizontal reinforcing ribs 12 and the second horizontal reinforcing ribs 13 are welded and fixed, and then, fully pouring the vertical reinforcing ribs 11, the first horizontal reinforcing ribs 12 and the second horizontal reinforcing ribs 13 by using the concrete layer 20 so that the upper ends of the vertical reinforcing ribs 11 do not leak, meanwhile, the concrete layer 20 needs to be stirred strictly according to a ratio, the particle size of the broken stones in the concrete layer 20 needs to be two centimeters to four centimeters, meanwhile, broken stones produced by Shanxi Shiqi, ningxia Taiyang mountain and Shanxi forest willow are selected, cement needs to be combined with national standard requirements, the grade is not lower than P42.5R, sand needs to be medium sand or coarse sand, the field construction needs to be vibrated sufficiently and not lower than seven days, the surface of one side of the concrete layer 20 facing the cement layer 30 needs to be maintained, and then, the cement layer 30 is laid on the concrete layer 20, and the surface of the cement layer 30 also needs to be a rough plane; here, it should be noted that the non-smooth surface is a rough plane.
Specifically, the vertical reinforcing rib 11, the first horizontal reinforcing rib 12 and the second horizontal reinforcing rib 13 are formed by welding and fixing reinforcing steel bars with the same diameter. Vertical strengthening rib 11, two liang mutually perpendicular of first horizontal strengthening rib 12 and second horizontal strengthening rib 13, vertical strengthening rib 11, first horizontal strengthening rib 12 and second level are strengthened equal equidistance welded fastening, that is to say, the distance between two adjacent vertical strengthening ribs 11 in a plurality of vertical strengthening ribs 11 equals, the distance between two adjacent first horizontal strengthening ribs 12 in a plurality of first horizontal strengthening ribs 12 equals, the distance between two adjacent second horizontal strengthening ribs 13 in a plurality of second horizontal strengthening ribs 13 equals.
Specifically, the distance between two adjacent vertical reinforcing ribs 11 in the plurality of vertical reinforcing ribs 11 is greater than or equal to 38 centimeters and less than or equal to 42 centimeters, preferably 40 centimeters; the distance between two adjacent first horizontal reinforcing ribs 12 in the plurality of first horizontal reinforcing ribs 12 is greater than or equal to 38 cm and less than or equal to 42 cm, preferably 40 cm; the distance between two adjacent second horizontal reinforcing ribs 13 in the plurality of second horizontal reinforcing ribs 13 is 38 cm or more and 42 cm or less, preferably 40 cm. Set up like this and make evenly arrange welded fastening between a plurality of vertical strengthening rib 11, a plurality of first horizontal strengthening rib 12 and a plurality of second horizontal strengthening rib 13, be favorable to the homogeneity that the strengthening rib position was arranged, guarantee the holding power of strengthening rib to the tunnel bottom plate.
As shown in fig. 1 to 4, the length of the vertical reinforcing bars 11 exposed out of the concrete layer 20 is greater than 5 cm, so that the length of the vertical reinforcing bars 11 inserted into the roadway floor is greater than or equal to 5 cm. Through the length setting that exposes concrete layer 20 with vertical strengthening rib 11 more than 5 centimetres, length with guaranteeing that vertical strengthening rib 11 inserts the tunnel bottom plate is greater than and is equal to 5 centimetres, thereby increase the cooperation area of vertical strengthening rib 11 and tunnel bottom plate, increase the bending resistance bed course to the support strength of tunnel bottom plate, prevent effectively that the bending resistance bed course from taking place to warp or the end heave, guarantee the reinforcement and the supporting role of bending resistance bed course to the tunnel bottom plate, thereby can increase the bending resistance of tunnel bottom plate, in order to guarantee the safety in production.
Specifically, concrete layer 20's thickness more than or equal to 15 centimetres, through setting up concrete layer 20's thickness more than 15 centimetres, thereby avoided concrete layer 20 thickness undersize to influence its structural strength's problem, guaranteed concrete layer 20's bulk hardness to increase the reinforcement effect to the tunnel bottom plate. The thickness of the cement layer 30 is greater than or equal to 5 cm, and the thickness of the cement layer 30 is set to be more than 5 mm, so that the strength of the bending-resistant cushion layer is further increased on the basis of the concrete layer 20, and the bending resistance of the bending-resistant cushion layer is further increased.
It is to be understood that the above-described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. The utility model provides a bending-resistant bed course of tunnel bottom plate which characterized in that includes:
the reinforcing ribs are arranged along at least three directions, and the three directions are vertical to each other;
a concrete layer (20) formed by pouring concrete on the plurality of reinforcing bars, wherein one end of each reinforcing bar in at least one direction is coated by the concrete layer (20), and the other end of each reinforcing bar is connected with a roadway bottom plate;
and the cement layer (30) is arranged on the concrete layer (20) and is positioned on the side where the reinforcing ribs are not exposed.
2. The anti-bending cushion of roadway floor according to claim 1, wherein the plurality of reinforcing ribs include a vertical reinforcing rib (11), a first horizontal reinforcing rib (12) and a second horizontal reinforcing rib (13), one end of the vertical reinforcing rib (11) is coated with the concrete layer (20), the other end of the vertical reinforcing rib (11) is vertically inserted into the roadway floor, and the vertical reinforcing rib (11), the first horizontal reinforcing rib (12) and the second horizontal reinforcing rib (13) are vertically arranged two by two.
3. The bending-resistant cushion of roadway floor according to claim 2, wherein the vertical reinforcing ribs (11), the first horizontal reinforcing ribs (12) and the second horizontal reinforcing ribs (13) are welded and fixed.
4. The anti-bending cushion layer of the roadway floor according to claim 2, wherein the vertical reinforcing ribs (11), the first horizontal reinforcing ribs (12) and the second horizontal reinforcing ribs (13) are provided in plurality, the plurality of vertical reinforcing ribs (11) are provided at intervals along the extending direction of the first horizontal reinforcing ribs (12) and the second horizontal reinforcing ribs (13), respectively,
a plurality of rows of vertical reinforcing ribs (11) arranged along the extending direction of the second horizontal reinforcing rib (13) are welded with the first horizontal reinforcing ribs (12) in a one-to-one correspondence manner; and/or
And multiple rows of vertical reinforcing ribs (11) arranged along the extending direction of the first horizontal reinforcing ribs (12) are welded with the second horizontal reinforcing ribs (13) in a one-to-one correspondence manner.
5. The anti-bending cushion layer of the roadway floor as claimed in claim 4, wherein the second horizontal reinforcing rib (13) is located on the side of the first horizontal reinforcing rib (12) far away from the roadway floor, and the second horizontal reinforcing rib (13) is vertically welded and fixed with the first horizontal reinforcing rib (12).
6. The buckling-resistant cushion layer of a roadway floor as claimed in claim 4,
the distance between every two adjacent vertical reinforcing ribs (11) in the plurality of vertical reinforcing ribs (11) is more than or equal to 38 cm and less than or equal to 42 cm; and/or
The distance between two adjacent first horizontal reinforcing ribs (12) in the plurality of first horizontal reinforcing ribs (12) is more than or equal to 38 cm and less than or equal to 42 cm; and/or
The distance between two adjacent second horizontal reinforcing ribs (13) in the plurality of second horizontal reinforcing ribs (13) is more than or equal to 38 cm and less than or equal to 42 cm.
7. The cushion for bending resistance of roadway floor according to claim 4, wherein the distance between two adjacent vertical reinforcing ribs (11) in the plurality of vertical reinforcing ribs (11) is equal, the distance between two adjacent first horizontal reinforcing ribs (12) in the plurality of first horizontal reinforcing ribs (12) is equal, and the distance between two adjacent second horizontal reinforcing ribs (13) in the plurality of second horizontal reinforcing ribs (13) is equal.
8. The buckling-resistant underlayment of the roadway floor as claimed in claim 2, wherein the vertical reinforcing bars (11), the first horizontal reinforcing bars (12) and the second horizontal reinforcing bars (13) are of the same diameter.
9. Flexurally stiff underlayment for roadway floors according to claim 1, characterised in that the surface of the concrete layer (20) on the side facing the cement layer (30) is undulated.
10. Buckling-resistant underlayment for roadway floor according to claim 1, characterized in that the surface of the cement layer (30) is a rough plane.
11. Anti-buckling underlayment for roadway floor according to claim 2, characterized in that the length of insertion of the vertical reinforcing bars (11) into the roadway floor is greater than or equal to 5 cm.
12. The buckling-resistant cushion layer of a roadway floor as claimed in claim 1,
the thickness of the concrete layer (20) is more than or equal to 15 cm; and/or
The thickness of the cement layer (30) is more than or equal to 5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221541658.XU CN217582156U (en) | 2022-06-20 | 2022-06-20 | Anti-bending cushion layer of roadway bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221541658.XU CN217582156U (en) | 2022-06-20 | 2022-06-20 | Anti-bending cushion layer of roadway bottom plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217582156U true CN217582156U (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221541658.XU Active CN217582156U (en) | 2022-06-20 | 2022-06-20 | Anti-bending cushion layer of roadway bottom plate |
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| Country | Link |
|---|---|
| CN (1) | CN217582156U (en) |
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2022
- 2022-06-20 CN CN202221541658.XU patent/CN217582156U/en active Active
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