CN212053526U - Concrete stair - Google Patents
Concrete stair Download PDFInfo
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- CN212053526U CN212053526U CN201922490426.0U CN201922490426U CN212053526U CN 212053526 U CN212053526 U CN 212053526U CN 201922490426 U CN201922490426 U CN 201922490426U CN 212053526 U CN212053526 U CN 212053526U
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Abstract
The utility model relates to a concrete stair, it includes: the stair tread comprises stair sections, a concrete surface layer, angle steel embedded parts, anchor bars and through holes; the surface of the step of the stair tread is covered with a concrete surface layer, and the angle steel embedded part is fixed at the step corner of the concrete surface layer; one end of each anchor bar is welded on a stair reinforcing steel bar in a stair section, and the other end of each anchor bar is welded on the inner side of the angle steel embedded part; the angle steel embedded piece is formed by arranging through holes in the two steel sheets, and each through hole is arranged in the length direction of the angle steel embedded piece. The utility model discloses set up the through-hole on the angle steel buries the piece, when the construction vibrated concrete, can in time discharge the bubble in the concrete through the through-hole, avoid vibrating the problem that the in-process combustion gas of concrete has certain clearance between the angle steel and after leading to the concrete drying owing to receive the sealed unable effective discharge of angle steel.
Description
Technical Field
The utility model relates to a stair technical field especially relates to a concrete stair.
Background
The information disclosed in the background of the invention is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information constitutes prior art that is already known to a person of ordinary skill in the art.
At present, no matter industrial buildings or concrete stairs of houses and public buildings are adopted, the wear or damage of the surfaces of concrete stairs, particularly corners is frequently caused due to the fact that the surfaces of the concrete stairs are abraded or damaged due to the fact that the surfaces of stair plastering surfaces are thin, the using frequency is high, the quality is difficult to guarantee in the construction process and the like; not only destroys the aesthetic property of the stairs, but also influences the service life of the stairs, and has larger potential safety hazard when not in time maintained.
Therefore, when the stair is built, corner abrasion or damage is reduced by a method of placing angle steel at the corner of the stair step, and the common construction method of the concrete stair at the present stage comprises the following steps: the method comprises the steps of paving a template, binding stair reinforcing steel bars, presetting angle steel embedded parts with anchor bars at stair step corners, reinforcing stair templates, completing concrete pouring of the stair after completion, vibrating concrete, performing calendaring and plastering before finishing final setting of the concrete after completion, and completing construction of the whole concrete stair, thereby saving labor and materials.
SUMMERY OF THE UTILITY MODEL
However, the utility model discloses the problem that exists between foretell stair and the angle steel is found: in the process of vibrating the concrete, the gas discharged by the concrete cannot be effectively discharged due to the sealing of the angle steel, so that certain gaps exist between the dried concrete and the angle steel, and the concrete is difficult to pass acceptance and rework, thereby causing inconvenience.
For can overcome above-mentioned problem, the utility model provides a concrete stair, for current construction method, the utility model discloses a concrete stair can effectively overcome the problem that has certain clearance between concrete drying back and the angle steel. In order to achieve the purpose, the utility model adopts the following technical means:
a concrete stair, comprising: the method comprises the following steps: the stair tread comprises stair sections, a concrete surface layer, angle steel embedded parts, anchor bars and through holes; the surface of the step of the stair tread is covered with a concrete surface layer, and the angle steel embedded part is fixed at the step corner of the concrete surface layer; one end of each anchor bar is welded on a stair reinforcing steel bar in a stair section, and the other end of each anchor bar is welded on the inner side of the angle steel embedded part; the angle steel embedded piece is formed by arranging through holes in the two steel sheets, and each through hole is arranged in the length direction of the angle steel embedded piece.
Further, the through holes arranged along the length direction of the angle iron embedded part 3 are linear or wavy; the steel sheet is preferably in a wavy line shape, and compared with a straight line shape, the through holes arranged in the wavy line shape are more beneficial to simultaneously covering the upper edge and the lower edge of the steel sheet, have larger exhaust area, and can more fully discharge the gas vibrated from the concrete, so that the inner side of the angle steel, particularly the corner of the angle steel, is tightly contacted with the concrete.
Furthermore, the angle iron embedded part is a hot-dip galvanized angle iron, such as an L50X5 hot-dip galvanized angle iron. The surface of the hot-dip galvanized angle steel is coated with a corrosion-resistant coating, which is beneficial to prolonging the service life of the angle steel embedded part.
Furthermore, the angle iron embedded part can also be made of a copper material, and the yellow metal luster of the copper material can better meet the requirement of some occasions on the appearance.
Further, the diameter of the through holes is 15-22mm, and optionally, the straight-line distance between the through holes is 5-12 cm; the through holes are arranged to help increase the bonding force between the angle iron embedded part and concrete.
Furthermore, the two steel sheets of the angle steel embedded part are respectively welded and fixed with an anchor bar, so that the stability of the angle steel embedded part is further improved, and deformation and dislocation caused by impact of concrete in the pouring process are avoided.
Furthermore, anchor bars on the two steel sheets are arranged in parallel; or the included angle between the anchor bars on the two steel sheets is 45-90 degrees.
Furthermore, a plurality of anchor bars arranged side by side are fixed on each angle steel embedded part along the length direction of the angle steel embedded part, and the distance between the anchor bars is 180mm and 220 mm; optionally, three anchor bars are fixed, arranged side by side.
Furthermore, the anchor bars are made of deformed steel bars, and the threads on the surfaces of the anchor bars can increase the bonding force between the anchor bars and concrete; in addition, the arrangement of the anchor bars is also beneficial to further increasing the mechanical property of the stair.
Compared with the prior art, the utility model discloses the beneficial effect in several aspects below having at least:
(1) because the restraint effect of anchor bar can prevent to use the problem that angle steel warp and the concrete surface course breaks away from of back angle steel and lead to for a period to make the angle steel play the effect of protection stair step bight lastingly.
(2) The utility model discloses set up the through-hole on the angle steel buries the piece, when the construction vibrated concrete, can in time discharge the bubble in the concrete through the through-hole, avoid vibrating the problem that the in-process combustion gas of concrete has certain clearance between the angle steel and after leading to the concrete drying owing to receive the sealed unable effective discharge of angle steel.
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 embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is the embodiment of the utility model provides a structural schematic diagram of concrete stair.
Fig. 2 is a schematic structural diagram of an angle iron in the embodiment of the present invention.
Fig. 3 is a schematic structural view of angle steel in another embodiment of the present invention.
The designations in the above figures represent respectively: 1-stair step section, 2-concrete surface layer, 3-angle steel embedded part, 4-anchor bar and 5-through hole.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, 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 invention belongs.
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 example embodiments in accordance with the invention. 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.
For convenience of description, the words "upper", "lower", "left" and "right" in the present application, if any, merely indicate that the device or element referred to in the present application is constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention, since they are merely intended to be oriented in the upper, lower, left and right directions of the drawings themselves, and not to limit the structure, but merely to facilitate the description of the invention and to simplify the description.
Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, for example, they may be fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As described above, in the existing concrete stairway, during the process of vibrating the concrete, the discharged gas is not effectively discharged due to the sealing of the angle steel, so that a certain gap exists between the dried concrete and the angle steel. Therefore, the utility model provides a concrete stair, it is right to combine description attached drawing and detailed implementation now the utility model discloses further explain.
First embodiment
Referring to fig. 1 and 2, a concrete stair includes: the steel angle embedded part comprises a stair section 1, a concrete surface layer 2, an angle steel embedded part 3, anchor bars 4 and through holes 5; the surface of the step of the stair tread 1 is covered with a concrete surface layer 2, and the angle steel embedded part 3 is fixed at the step corner of the concrete surface layer 2; one end of each anchor bar 4 (deformed steel bar with the diameter of 8 mm) is welded on the stair reinforcing steel bar in the stair section 1, and the other end of each anchor bar 4 is welded on the inner side of the angle iron embedded part 2; the angle steel buries and has all seted up through-hole 5 on the two steel sheets of piece 3, each on the steel sheet, the through-hole all is the linear array along the length direction that the piece 3 was buried to the angle steel. Anchor bars 4 are welded and fixed on the two steel sheets forming the angle steel embedded part 3, and the two groups of anchor bars are arranged in parallel; three anchor bars which are arranged side by side are fixed on each angle steel embedded part along the length direction of the angle steel embedded part, and the space between the anchor bars is 200 mm; the two steel sheets forming the steel embedded part 3 are respectively provided with 5 groups of through holes 5, the diameter of each through hole is 20mm, and the linear distance between every two through holes is 5 cm; the angle steel embedded part 2 is L50X5X1000 hot galvanizing angle steel.
Second embodiment
Referring to fig. 1 and 3, a concrete stair includes: the steel angle embedded part comprises a stair section 1, a concrete surface layer 2, an angle steel embedded part 3, anchor bars 4 and through holes 5; the surface of the step of the stair tread 1 is covered with a concrete surface layer 2, and the angle steel embedded part 3 is fixed at the step corner of the concrete surface layer 2; one end of each anchor bar 4 (deformed steel bar with the diameter of 8 mm) is welded on the stair reinforcing steel bar in the stair section 1, and the other end of each anchor bar 4 is welded on the inner side of the angle iron embedded part 2; through holes 5 are formed in the two steel sheets forming the angle steel embedded part 3. Anchor bars 4 are welded and fixed on the two steel sheets forming the angle steel embedded part 3, and the two groups of anchor bars are arranged in parallel; three anchor bars which are arranged side by side are fixed on each angle steel embedded part along the length direction of the angle steel embedded part, and the space between the anchor bars is 200 mm; the two steel sheets forming the steel embedded part 3 are respectively provided with 5 groups of through holes 5, and the through holes on each steel sheet are arranged in a wave shape along the length direction of the angle steel embedded part 3 (as shown in figure 3); the diameter of the through holes is 20mm, and the linear distance between the through holes is 8 cm; the angle steel embedded part 2 is L50X5X1000 hot galvanizing angle steel.
Third embodiment
Referring to fig. 1 and 2, a concrete stair includes: the steel angle embedded part comprises a stair section 1, a concrete surface layer 2, an angle steel embedded part 3, anchor bars 4 and through holes 5; the surface of the step of the stair tread 1 is covered with a concrete surface layer 2, and the angle steel embedded part 3 is fixed at the step corner of the concrete surface layer 2; one end of each anchor bar 4 (deformed steel bar with the diameter of 10 mm) is welded on the stair reinforcing steel bar in the stair section 1, and the other end of each anchor bar 4 is welded on the inner side of the angle iron embedded part 2; the angle steel buries and has all seted up through-hole 5 on the two steel sheets of piece 3, each on the steel sheet, the through-hole all is the linear array along the length direction that the piece 3 was buried to the angle steel. Anchor bars 4 are welded and fixed on the two steel sheets forming the angle steel embedded part 3, and the included angle between the two groups of anchor bars is 80 degrees; four anchor bars arranged side by side are fixed on each angle steel embedded part along the length direction of the angle steel embedded part, and the space between the anchor bars is 180 mm; the two steel sheets forming the steel embedded part 3 are respectively provided with 5 groups of through holes 5, the diameter of each through hole is 15mm, and the linear distance between every two through holes is 10 cm; the angle iron embedded part 2 is L50X5X1000 hot-dip galvanized angle iron.
Fourth embodiment
Referring to fig. 1 and 2, a concrete stair includes: the steel angle embedded part comprises a stair section 1, a concrete surface layer 2, an angle steel embedded part 3, anchor bars 4 and through holes 5; the surface of the step of the stair tread 1 is covered with a concrete surface layer 2, and the angle steel embedded part 3 is fixed at the step corner of the concrete surface layer 2; one end of each anchor bar 4 (deformed steel bar with the diameter of 10 mm) is welded on the stair reinforcing steel bar in the stair section 1, and the other end of each anchor bar 4 is welded on the inner side of the angle iron embedded part 2; the angle steel buries and has all seted up through-hole 5 on the two steel sheets of piece 3, each on the steel sheet, the through-hole all is the linear array along the length direction that the piece 3 was buried to the angle steel. Anchor bars 4 are welded and fixed on the two steel sheets forming the angle steel embedded part 3, and the included angle between the two groups of anchor bars is 45 degrees; four anchor bars arranged side by side are fixed on each angle steel embedded part along the length direction of the angle steel embedded part, and the space between the anchor bars is 220 mm; the two steel sheets forming the steel embedded part 3 are respectively provided with 5 groups of through holes 5, the diameter of each through hole is 22mm, and the linear distance between every two through holes is 12 cm; the angle iron embedded part 2 is made of stainless steel, the width of the angle iron embedded part is 50mm, the length of the angle iron embedded part is 1200mm, and the thickness of the angle iron embedded part is 5 mm.
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 (10)
1. A concrete stair, comprising: the stair tread comprises stair sections, a concrete surface layer, angle steel embedded parts, anchor bars and through holes; the surface of the step of the stair tread is covered with a concrete surface layer, and the angle steel embedded part is fixed at the step corner of the concrete surface layer; one end of each anchor bar is welded on a stair reinforcing steel bar in a stair section, and the other end of each anchor bar is welded on the inner side of the angle steel embedded part; the angle steel embedded piece is formed by arranging through holes in the two steel sheets, and each through hole is arranged in the length direction of the angle steel embedded piece.
2. The concrete staircase of claim 1, wherein the through holes arranged along the length direction of the angle iron insert are linear or wavy.
3. The concrete staircase of claim 1, wherein said angle iron insert is stainless steel or galvanized angle iron.
4. A concrete staircase as defined in claim 1, wherein said angle iron inserts are made of copper.
5. The concrete staircase according to claim 1, wherein said through holes have a diameter of 15-22 mm; the distance between the through holes is 5-12 cm.
6. The concrete stair of claim 1, wherein anchor bars are welded and fixed on both steel plates of the angle steel embedded part.
7. A concrete staircase as defined in claim 5, wherein said anchor bars are arranged in parallel between said steel plates.
8. A concrete staircase as claimed in claim 5, wherein the angle between the anchor bars on the two steel sheets is 45-80 °.
9. The concrete stair of claim 1, wherein each angle embedded part is fixed with a plurality of anchor bars along the length direction thereof, and the linear distance between the anchor bars is 180mm and 220 mm.
10. A concrete staircase as defined in claim 9, wherein said anchoring bars are screw steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922490426.0U CN212053526U (en) | 2019-12-31 | 2019-12-31 | Concrete stair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922490426.0U CN212053526U (en) | 2019-12-31 | 2019-12-31 | Concrete stair |
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| Publication Number | Publication Date |
|---|---|
| CN212053526U true CN212053526U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922490426.0U Active CN212053526U (en) | 2019-12-31 | 2019-12-31 | Concrete stair |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060042A (en) * | 2021-11-30 | 2022-02-18 | 上海隧道工程有限公司 | Binding structure of concrete pipe joint and construction method thereof |
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- 2019-12-31 CN CN201922490426.0U patent/CN212053526U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060042A (en) * | 2021-11-30 | 2022-02-18 | 上海隧道工程有限公司 | Binding structure of concrete pipe joint and construction method thereof |
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