CN202039274U - Sidewalk slab - Google Patents
Sidewalk slab Download PDFInfo
- Publication number
- CN202039274U CN202039274U CN2011201213149U CN201120121314U CN202039274U CN 202039274 U CN202039274 U CN 202039274U CN 2011201213149 U CN2011201213149 U CN 2011201213149U CN 201120121314 U CN201120121314 U CN 201120121314U CN 202039274 U CN202039274 U CN 202039274U
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- Prior art keywords
- sidewalk
- footplate
- sidewalk slab
- slab
- holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000000843 powder Substances 0.000 claims abstract description 19
- 239000011381 foam concrete Substances 0.000 claims description 3
- 239000013585 weight reducing agent Substances 0.000 claims description 3
- 239000004567 concrete Substances 0.000 abstract description 21
- 239000000463 material Substances 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 3
- 230000008014 freezing Effects 0.000 abstract description 2
- 238000007710 freezing Methods 0.000 abstract description 2
- 238000010257 thawing Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Road Paving Structures (AREA)
Abstract
The utility model relates to a sidewalk slab. The thickness of the sidewalk slab is less than or equal to 70mm, or is larger than or equal to 30mm, and the sidewalk slab is made of reactive powder concrete. In order to reduce the weight of the sidewalk slab, both sides of the bottom of the sidewalk slab can be provided with ribs, and the sidewalk slab can be provided with through holes as well, so that the section of the sidewalk slab is produced into a ribbed form or a porous slab form, consequently, while the structural strength is guaranteed, materials can be remarkably saved, and the sidewalk slab has the structural characteristics of lightness and thinness. In addition, the sidewalk slab is highly durable; the impermeability of the sidewalk slab is larger than P16, so the sidewalk slab has good impermeability, and can effectively prevent the permeation of harmful media; in six hundred quick experiments on resistance to freezing and thawing, sidewalk slab test specimens made of reactive powder concrete do not have loss in the dynamic modulus of elasticity and quality. Consequently, the workload for the maintenance and replacement of the sidewalk slab is reduced, the maintenance cost is reduced, and moreover, the sidewalk slab also has the advantages that: the quality is stable, the sidewalk slab is easy to construct, and the cost of transportation and mounting can be effectively reduced.
Description
Technical Field
The utility model relates to a sidewalk step plate, in particular to a sidewalk step plate made of active powder concrete.
Background
The railway bridge is a comprehensive system project with multiple specialties, a track system, an electric power system, a communication signal system and the like, the system is required to be arranged on a bridge structure when the viaduct passes through a section, the requirement on the viaduct is high, various facilities which pass through and are arranged on a bridge floor are more, the professions are related, meanwhile, the arrangement and the construction form of the bridge floor directly influence the beam structure, the abutment and the foundation size of the bridge, and the system is closely related to the durability, the use and the maintenance of the bridge span structure. At present, the common railway bridge sidewalk footpath plate is mainly made of common reinforced concrete materials and forms a substantially square or rectangular solid plate.
Known walkway pallets made of ordinary reinforced concrete are large in size in thickness, typically 60-90mm thick, and require the arrangement of steel reinforcement inside the walkway pallet due to insufficient material strength. In the long-term use process, the reinforcing steel bar can produce the corrosion, therefore has hidden danger in the aspect of durability etc. and later maintenance people, property, material cost are big. Meanwhile, the second-stage load of the railway bridge is increased due to the fact that the weight of the sidewalk step plate is large.
In addition, the materials and engineering schemes adopted by the well-known sidewalk footplate greatly consume non-renewable resources such as steel, cement and the like, the energy consumption in the production process is high, and CO is generated2The discharge amount is large. The well-known sidewalk footplate has rough surface and poor aesthetic property, the damage and replacement rate of the sidewalk footplate made of common concrete are very high according to the field use condition, part of footplates do not wait for the formal inspection of the line, the edge-collision corner drop occurs after the footplates are moved for several times in the construction process, and a certain hidden trouble is left for the smooth acceptance and the future operation of the bridge, so that a plurality of problems exist in the use.
In addition, with the expansion of railway construction scale in recent years, various common concrete slabs with different names, such as cement base plates and the like, appear, and the manufacturing process is to mix a certain amount of glass fibers into common concrete, aiming at improving local strength and reducing broken edges and corners. However, the common glass fiber has poor alkali resistance and can be aged and failed quickly, the alkali-resistant special glass fiber has high manufacturing cost, and the high price causes the user to be difficult to bear, so the sidewalk footplate made of cement-based materials and other objects tends to quit using the stage in the railway bridge construction in recent years.
In order to overcome the problems of insufficient strength, heavy volume, rough surface, poor aesthetic property, poor durability and the like of the well-known common reinforced concrete sidewalk footplate, the consumption of people, property and objects for secondary loading and later maintenance of a railway bridge is reduced, and the designer develops the sidewalk footplate which is made of active powder concrete and is particularly suitable for the railway bridge according to the experience of years in practice and research and development in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pavement step plate, in particular to a pavement step plate which is made of active powder concrete and is not provided with stressed steel bars in components.
Therefore, the utility model provides a pavement step, wherein, pavement step thickness is less than or equal to 70mm, more than or equal to 30mm to make by active powder foam concrete.
The sidewalk footplate is characterized in that the two sides of the bottom surface of the sidewalk footplate are provided with convex ribs, and the middle part of the sidewalk footplate is provided with a concave part which can reduce the weight of the sidewalk footplate.
The sidewalk footplate as described above, wherein the sidewalk footplate is provided with a through hole which can reduce weight.
The sidewalk footplate as described above, wherein a plurality of the through holes are provided in a height direction of the sidewalk footplate.
The sidewalk footplate as described above, wherein a plurality of the through holes are provided along a length direction of the sidewalk footplate.
The sidewalk footplate as described above, wherein the through hole is a circular hole, an elliptical hole or a long hole.
The sidewalk footplate as described above, wherein the thickness of the sidewalk footplate is 50mm or less.
The sidewalk footplate as described above, wherein the upper surface of the sidewalk footplate is provided with anti-skid patterns.
The sidewalk footplate provided by the utility model is made of active powder concrete materials, is a plate-type component, and no stressed steel bar is arranged in the component; have superhigh strength (resistance to compression 130MPa), durability (anti freezing F500) and toughness (anti 18MPa of rolling over) simultaneously, the utility model discloses a pavement step plate thickness is 50mm-30 mm's flat plate structure usually, has reduced member thickness and dead weight when guaranteeing its component intensity greatly, through set up the hole on pavement step plate, with nearly 60% of the weight reduction of step plate, the structure is lighter and thinner, has effectively alleviateed bridge load, has reduced the total weight of bridge.
The sidewalk footplate made of the active powder concrete is prefabricated in a factory, can be drilled and cut, is light in weight, is simple and quick, and is low in transportation and installation cost by adopting a construction mode of carrying, placing and installing on site. The factory prefabrication is beneficial to ensuring the stable quality; the mass production is beneficial to improving the speed and reducing the production cost.
The utility model discloses a pavement step board has high durability, and its impermeability is greater than P16, and the impermeability is good, can prevent the invasion of harmful medium effectively, through 600 quick freeze-thaw resistance tests, and the moving elastic modulus of the pavement step board test piece of making by the active powder concrete is lossless, the quality is lossless. Therefore, the workload of repairing and replacing the footpath footplate is reduced, and the maintenance cost is reduced.
In addition, the safety coefficient of the sidewalk step plate reaches 4.44, the discreteness is extremely small, the safety and the reliability are high, the strength grade is high, and the impact resistance is strong.
Because the utility model discloses a pavement step board is inside all not to set up the reinforcing bar, and all shear stress and tensile stress are undertaken alone by the active powder concrete, consequently the utility model discloses there is not the problem of reinforcing bar corrosion, easily pavement step board pour and the shaping. And the sidewalk step plate requires to reach the steam curing of 75 +/-5 ℃ in the manufacturing process, and the concrete member factory with general curing conditions can realize the curing conditions, therefore, the utility model provides a sidewalk step plate is easy to process. Additionally, the utility model discloses a rib form or perforated plate form can be made to the cross-section of pavement step board, when guaranteeing component intensity, is showing saving raw and other materials, has the slim structural feature of light and handy.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
FIG. 1A is a schematic front view of an embodiment of the present invention showing a sidewalk deck with ribs;
FIG. 1B is a schematic top view of a sidewalk deck with ribs;
FIG. 1C is a schematic side view of a sidewalk deck with ribs;
FIG. 1D is another variation of the sidewalk footplate shown in FIG. 1A, showing a through-hole formed therein;
FIG. 2A is a schematic front view of another embodiment of the present invention, showing a sidewalk footplate with through holes along its length;
FIG. 2B is a schematic top view of a sidewalk footplate with through holes along its length;
FIG. 2C is a schematic side view of a sidewalk footplate with through holes along its length;
FIG. 3A is a schematic front view of another embodiment of the present invention, showing a sidewalk footplate with through holes along the thickness direction;
FIG. 3B is a schematic top view of a sidewalk footplate with through holes in the thickness direction;
fig. 3C is a schematic side view of a walkway plate provided with through holes in the thickness direction.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
The utility model provides a people moving walkways step is made by the active powder concrete (RPC) of superhigh intensity, and its thickness less than or equal to 70mm, more than or equal to 30mm through set up hole or recess on people moving walkways step, can reduce the thickness and the dead weight of component by a wide margin, consequently the utility model discloses a people moving walkways step specially adapted railway bridge can alleviate the load of bridge effectively, reduces the total weight of bridge.
FIG. 1A is a schematic front view of an embodiment of the present invention showing a sidewalk deck with ribs; FIG. 1B is a schematic top view of a sidewalk deck with ribs; FIG. 1C is a schematic side view of a sidewalk deck with ribs; fig. 1D is another variation of the pavement slab of fig. 1A, showing through holes formed therein.
As shown in the drawings, in one embodiment of the drawings, the sidewalk footplate 1 made of reactive powder foam concrete is provided with ribs 11 on both sides of the bottom surface of the sidewalk footplate 1 in order to meet the requirement of assistant installation, so that the total height of the sidewalk footplate 1 is not more than 70mm, and the middle part is formed with a concave part 12 by the structure that the ribs 11 are only arranged on both sides, thereby ensuring the height requirement of assistant installation and effectively reducing the weight of the sidewalk footplate.
In order to further reduce the weight of the footplate 1, a plurality of through-holes 13 may be provided along the height of the footplate 1. The shape of the through hole 13 is not limited, and may be, for example, a circular hole, an elliptical hole, an elongated hole, or the like. And the through holes 13 are uniformly distributed on the surface of the sidewalk footplate.
The utility model discloses a pavement step board 1 has superhigh strength and toughness (resistance to compression 130MPa, 18MPa of anti book), has reduced component thickness and dead weight greatly, compares nearly 60% of weight reduction with the pavement step board of well-known structure, and the structure is lighter and thinner, the utility model discloses a pavement step board 1 assists when locating the railway bridge, can the total weight of greatly reduced bridge. And simultaneously, because the utility model discloses a pavement step board 1 is made by active powder concrete, and its inside all does not set up the reinforcing bar, and all shear stress and tensile stress are born alone by active powder concrete, do not have the problem of reinforcing bar corrosion, easily pavement step board pour and the shaping to have high durability.
FIG. 2A is a schematic front view of another embodiment of the present invention, showing a sidewalk footplate with through holes along its length; FIG. 2B is a schematic top view of a sidewalk footplate with through holes along its length; fig. 2C is a schematic side view of a walkway plank with through holes along its length.
As shown in the drawings, in another embodiment of the present invention, a sidewalk footplate 2 made of ultra-high strength Reactive Powder Concrete (RPC) has a rectangular or square plate shape, and a plurality of through holes 21 are formed along a length direction of the sidewalk footplate 2. The shape of the through hole 21 is not limited, and may be a circular hole, an elliptical hole, a long hole, or the like.
Other structures, working principles and beneficial effects of the present embodiment are the same as those of the above embodiment, and are not described herein again.
FIG. 3A is a schematic front view of another embodiment of the present invention, showing a sidewalk footplate with through holes along the thickness direction; FIG. 3B is a schematic top view of a sidewalk footplate with through holes in the thickness direction; fig. 3C is a schematic side view of a walkway plate provided with through holes in the thickness direction.
As shown in the drawings, in a further embodiment of the present invention, the sidewalk footplate 3 made of ultra-high strength Reactive Powder Concrete (RPC) has a rectangular or square plate shape, and a plurality of through holes 31 are formed along the height direction of the sidewalk footplate 3. The shape of the through hole 31 is also not limited, and may be a circular hole, an elliptical hole, a long hole, or the like. Other structures, working principles and beneficial effects of the present embodiment are the same as those of the above embodiment, and are not described herein again.
Furthermore, the utility model provides a pavement step board 1, 2, 3's upper surface all can set up anti-skidding decorative pattern, and the height of decorative pattern for example can be 4mm to the security of walking on it has been improved.
The utility model discloses a concrete embodiment of pavement step is, adopts the active powder concrete to make railway pavement step, and its length is 780mm-1480mm, and the width is 380mm-500mm, and thickness is 50mm (contains the decorative pattern height 4 mm). Four vertical edges at the periphery of the sidewalk step plate in the thickness direction are chamfered to form angles with the radius of 5mm, raised anti-skid patterns are arranged on the upper surface of the step plate, and the peripheries of the raised anti-skid patterns are chamfered at 45 degrees. In order to ensure the strength of the sidewalk footplate of the utility model, the thickness of the footplate is usually not less than 30 mm.
During the use, will the utility model discloses a pavement step directly paves on cable duct angle steel support, pavement step is in the same direction as bridge parallel frame and is put back on the cable duct, leaves 6mm installation seam between each step. The working principle is as follows: the sidewalk footplate transmits the borne vertical and horizontal loads to the cable trough angle steel bracket, and the bracket transmits the horizontal and vertical loads to the bridge main body structure.
The utility model discloses a pavement step board is made by the active powder concrete completely, does not set up the reinforcing bar in the inboard, adopts plate-type component form, and the injection molding of being convenient for does not have the corrosion problem of atress reinforcing bar in the ordinary reinforced concrete, has the mechanical properties of very strong tensile, resistance to compression simultaneously.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (9)
1. A sidewalk footplate, comprising: the sidewalk step plate is 70mm or less in thickness and 30mm or more in thickness and is made of active powder foam concrete.
2. A footpath plate as recited in claim 1, wherein the footpath plate has ribs on both sides of its bottom surface and a recess in the middle to reduce the weight of the footpath plate.
3. A footplate as claimed in claim 2, wherein a plurality of through-going holes are provided in the footplate in the height direction.
4. A sidewalk footplate according to claim 1, wherein the sidewalk footplate is provided with a through hole for weight reduction.
5. A footplate according to claim 4, wherein a plurality of the through holes are provided in the footplate in the height direction.
6. A footplate according to claim 4, wherein a plurality of the through holes are provided along the length of the footplate.
7. A footplate as claimed in claim 3 or 5, wherein the through-hole is a circular, oval or elongated hole.
8. A pavement slab according to any of claims 4-6, characterized in that the thickness of the pavement slab is equal to or less than 50 mm.
9. A pavement slab according to any of claims 1-6, characterized in that the upper surface of the pavement slab is provided with a non-slip tread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201213149U CN202039274U (en) | 2011-04-22 | 2011-04-22 | Sidewalk slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201213149U CN202039274U (en) | 2011-04-22 | 2011-04-22 | Sidewalk slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202039274U true CN202039274U (en) | 2011-11-16 |
Family
ID=44966725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201213149U Expired - Fee Related CN202039274U (en) | 2011-04-22 | 2011-04-22 | Sidewalk slab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202039274U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205931A (en) * | 2013-03-16 | 2013-07-17 | 江阴锦澄钢铁有限公司 | Anti-skidding channel steel |
| CN105130337A (en) * | 2015-08-26 | 2015-12-09 | 西南交通大学 | Cement-based engineering composite railway sidewalk cover board preparation process and product |
| CN107313324A (en) * | 2017-07-27 | 2017-11-03 | 中冶建工集团有限公司 | A kind of pin-connected panel pavement and system |
-
2011
- 2011-04-22 CN CN2011201213149U patent/CN202039274U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205931A (en) * | 2013-03-16 | 2013-07-17 | 江阴锦澄钢铁有限公司 | Anti-skidding channel steel |
| CN105130337A (en) * | 2015-08-26 | 2015-12-09 | 西南交通大学 | Cement-based engineering composite railway sidewalk cover board preparation process and product |
| CN107313324A (en) * | 2017-07-27 | 2017-11-03 | 中冶建工集团有限公司 | A kind of pin-connected panel pavement and system |
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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: 20111116 Termination date: 20180422 |