CN212317340U - Precast concrete stair component - Google Patents
Precast concrete stair component Download PDFInfo
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- CN212317340U CN212317340U CN202020650091.4U CN202020650091U CN212317340U CN 212317340 U CN212317340 U CN 212317340U CN 202020650091 U CN202020650091 U CN 202020650091U CN 212317340 U CN212317340 U CN 212317340U
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- stair
- precast concrete
- ladder
- concrete stair
- reinforcing
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Abstract
The utility model relates to a precast concrete stair component relates to the technical field of stair, and it includes the stair body and buries underground in this internal integrative enhancement skeleton of pouring of stair, and a plurality of ladders have been pour to stair body one side, be provided with the lightening hole along its length direction in the ladder. It has the advantage of lightening the weight of the stair.
Description
Technical Field
The utility model belongs to the technical field of the technique of stair and specifically relates to a precast concrete stair component is related to.
Background
The prefabricated beam-bearing reinforced concrete stair is a stair construction mode in which stair sections are supported by platform beams. The prefabricated components can divide beam slab type bench sections according to three parts of bench sections, platform beams and platform plates and are composed of inclined ladder beams and step plates.
The prior art discloses a stair component comprising a first floor platform plate, a stair step plate, a second floor platform plate and two stair beams which are mutually connected by referring to an invention patent application with an authorization publication number of CN 203547045U; the first floor platform plate and the second floor platform plate comprise prefabricated reinforced concrete horizontal thin plates and cast-in-place concrete superposed layers; the step plate comprises a prefabricated reinforced concrete oblique thin plate and a cast-in-place concrete stepped laminated layer; the stair beam comprises channel steel and cast-in-place concrete, wherein two ends of the channel steel are fixed on the wall of the staircase; a plurality of nuts connected with the bolts are embedded in the horizontal thin plate and the oblique thin plate; the laminated layer and the stepped laminated layer are provided with stressed reinforcing steel bars and structural reinforcing steel bars which are connected into a whole, and the beard reinforcing steel bars in the horizontal thin plate and the inclined thin plate are connected with the anchoring reinforcing steel bars. The invention has the advantages of simple structure and convenient prefabrication and production.
The above prior art solutions have the following drawbacks: this stair component is concrete prefabricated's solid construction, results in this stair quality heavier, the transportation and the installation of the stair of being not convenient for.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing a precast concrete stair component, it has the whole quality that alleviates stair, has the advantage of convenient transportation and installation.
The above object of the present invention can be achieved by the following technical solutions:
the utility model provides a precast concrete stair component, includes the stair body and buries underground in this internal integrative enhancement skeleton of pouring of stair, has pour a plurality of ladders on one side of the stair body, be provided with the lightening hole along its length direction in the ladder.
Through adopting above-mentioned technical scheme, set up each ladder of stair into inside hollow structure for its body quality obtains very big reduction, makes later stage more convenient when transporting and installing this stair.
The present invention may be further configured in a preferred embodiment as: the reinforcing frame comprises a reinforcing mesh and a plurality of pipe fittings fixed on the reinforcing mesh, and the pipe fittings are arranged along the length direction of the ladder.
By adopting the technical scheme, compared with the common plain concrete stair, the stair is of a reinforced concrete structure constructed by using a reinforcement cage, so that the stair has good bearing performance; the pipe fitting can be conveniently formed into lightening holes.
The present invention may be further configured in a preferred embodiment as: the two ends of the pipe fitting are flush with the end faces of the steps.
Through adopting above-mentioned technical scheme, when pouring the stair body, the pipe fitting flushes with the tip of ladder, conveniently pours for pour the steel pipe and be located the tip of lightening hole after accomplishing, the inner chamber of steel pipe can reduce the stair because of the too big possibility of damaging of local atress as the hole for hoist.
The present invention may be further configured in a preferred embodiment as: the reinforcing framework further comprises arc-shaped ribs which are concave towards the ladder, and the arc-shaped ribs and the reinforcing mesh are fixed together.
Through adopting above-mentioned technical scheme, the arc muscle of indent can be decomposed the pressure that stair received to other places for stair can bear bigger pressure.
The present invention may be further configured in a preferred embodiment as: the stair body both ends are provided with the installation department, and the installation department is opened there is the perpendicular to main plane mounting hole.
Through adopting above-mentioned technical scheme, when installing stair, can fasten stair with the bolt in the mounting hole for the fastening more of being connected of stair and floor.
The present invention may be further configured in a preferred embodiment as: and vertical and upward jacks are arranged at the positions of two sides of the ladder, which are close to the end faces.
By adopting the technical scheme, the jacks can be used for installing handrails, so that the risk of falling of pedestrians from stairs is reduced; if the handrail is not installed, when the decorative plate needs to be laid on the surface of the stair, the insertion holes can be used as fixing holes for paving.
The present invention may be further configured in a preferred embodiment as: the ladder is provided with the mounting groove near the edge.
Through adopting above-mentioned technical scheme, the mounting groove can the easy to assemble antislip strip, installs after the antislip strip, can reduce the risk that the pedestrian slided.
The present invention may be further configured in a preferred embodiment as: one side of the mounting part departing from the positioning surface is provided with a positioning groove.
Through adopting above-mentioned technical scheme, when needs multistage stair body combined use, utilize the position that the stair body can be fixed a position fast to the cooperation of locating surface and positioning groove.
The present invention may be further configured in a preferred embodiment as: a slope is arranged on one side of the stair body.
Through adopting above-mentioned technical scheme, when the pedestrian had the transport suitcase, the slope of setting can make things convenient for pedestrian's haul.
The present invention may be further configured in a preferred embodiment as: the bottom surface of the mounting part of the stair body is used as a positioning surface, and the positioning surface is an arc surface protruding outwards.
By adopting the technical scheme, when the stair body is lapped, the arc surface of the mounting part can be used for conveniently positioning and mounting the stair; when the stair is installed, the arc surface can adjust the inclination angle of the arc surface in a self-adaptive mode, and the possibility of unstable lap joint caused by the fact that the angle of the stair is different from the inclination angle of a floor is reduced.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the through holes arranged in the steps are utilized, so that the self weight of the stair is reduced, and the stair is more convenient to transport and install;
2. the inward-concave reinforcement cage enables the stair to bear higher pressure, so that the stair is safer;
3. the slope can facilitate the pedestrian to haul the luggage.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a schematic view of a reinforcing cage;
fig. 4 is a side view of a reinforcing cage.
Reference numerals: 1. a stair body; 11. a step; 12. mounting holes; 13. a jack; 14. mounting grooves; 15. a slope; 16. a positioning groove; 2. reinforcing the framework; 21. an arc-shaped rib; 22. a pipe fitting; 23. a connecting rod; 24. and (4) reinforcing mesh.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
referring to fig. 1, a precast concrete stair structure includes a stair body 1 and a reinforcement framework 2 integrally poured on the inner wall of the stair body 1.
Referring to fig. 1 and 2, the stair body 1 is provided with a plurality of steps 11, and a circular lightening hole is formed in the middle of each step 11 along the length direction of the step, and the lightening holes can lighten the whole weight of the stair; two ends of the ladder 11 are perpendicular to the surface of the ladder to form insertion holes 13, and the insertion holes 13 are counter bores, so that handrails can be conveniently additionally arranged on two sides of the ladder in the later stage; the mounting groove 14 has been seted up at the step face edge, and the mounting groove 14 is rectangular shape heavy groove, and the mounting groove 14 can make things convenient for the later stage to install the antislip strip.
Mounting parts are integrally cast at two ends of the stair body 1, each mounting part is a rectangular strip-shaped block, a certain included angle is formed between each mounting part and a step surface, and the included angle can be manufactured according to the included angle of a floor mounting position; mounting holes 12 are formed in the main plane of the mounting portion and close to the two end faces, the mounting holes 12 are circular through holes, and after the stair body 1 is positioned, the mounting holes 12 can be used for fixing the stair body 1 conveniently through bolts or concrete.
The side surface of the mounting part, which is far away from the main plane of the ladder 11, is formed into an arc surface, and when the stair body 1 is mounted at the later stage, the arc surface can be used for conveniently adjusting the inclination angle of the stair body 1; open along its length direction on the installation department major plane and have positioning groove 16, connect when needs a plurality of stair bodies 1 and use the messenger, can fix a position fast with the cooperation installation of positioning surface and the positioning groove 16 of the other end of stair body 1.
A slope 15 is laid on one side of the stair body 1, the inclination angle of the slope 15 is the same as that of the stair, and the slope 15 can facilitate the passengers to conveniently drag luggage when going upstairs and downstairs; the insertion hole 13 penetrates the slope surface of the slope 15.
Referring to fig. 3 and 4, the reinforcing cage 2 includes a pipe 22 installed in the installation hole 12, the pipe 22 may be a circular steel pipe, the outer circumferential surface of the pipe 22 is connected to connection rods 23 near two ends, the connection rods 23 are steel bars, and the pipe 22 and one end of the connection rods 23 are fixed by welding; the other end of the connecting rod 23 is fixed on the mesh reinforcement 24, the mesh reinforcement 24 comprises a plurality of mesh reinforcement bars arranged in a grid manner, and the connecting rod 23 and the mesh reinforcement 24 are fixed by welding.
In order to make the stair body 1 bear higher pressure, the arc-shaped ribs 21 are fixed on one side of the mesh reinforcement 24 close to the pipe 22, and the arc-shaped ribs 21 are made of steel bars and protrude towards the pipe 22.
The lightening hole can also regard as the hole for hoist when transporting stair simultaneously, because steel pipe links into an integrated entity with reinforcing bar net 24, when hoist and mount for the hoist and mount atress is more even, can reduce the stair equipartition and receive the pulling force too big and damage the possibility of stair quality.
The utility model discloses a manufacture process as follows:
firstly, a slope support is erected, a bottom die for forming the stair body 1 is fixed on a slope of the support, a convex reinforcing framework 2 is erected on the bottom die, a steel pipe is welded at a position, where a lightening hole needs to be manufactured, above the reinforcing framework 2 by using a steel bar, an upper die is covered, concrete is poured, after the concrete is fixedly formed, the die is detached, and a finished product is hoisted to a factory for storage by using a hoisting tool. The steps 11 are made into hollow structures by utilizing lightening holes, so that the self weight of the stair is greatly reduced; the cavity of the steel pipe in the weight reducing hole is used as a hoisting hole, so that the hoisting is convenient; the steel pipe and the reinforcing mesh 24 at the lower layer are welded and fixed into an integral structure, so that the possibility of damaging the stair body 1 due to uneven stress can be reduced in the process of hoisting the stair body 1; the arc ribs 21 protruding towards the staircase can make the staircase body 1 bear larger pressure.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. The utility model provides a precast concrete stair component, includes stair body (1) and buries underground in the interior integrative reinforcing skeleton (2) of pouring of stair body (1), and a plurality of ladders (11), its characterized in that have been pour to stair body (1) one side: and lightening holes are formed in the ladder (11) along the length direction of the ladder.
2. The precast concrete stair member of claim 1, wherein: the reinforcing frame (2) comprises a reinforcing mesh (24) and a plurality of pipe fittings (22) fixed on the reinforcing mesh (24), and the pipe fittings (22) are arranged along the length direction of the ladder (11).
3. The precast concrete stair member of claim 2, wherein: the two ends of the pipe fitting (22) are flush with the end faces of the ladder (11).
4. The precast concrete stair member of claim 2, wherein: the reinforcing framework (2) further comprises arc-shaped ribs (21) which are concave towards the ladder, and the arc-shaped ribs (21) are fixed with the reinforcing mesh (24).
5. The precast concrete stair member of claim 1, wherein: the stair body (1) both ends are provided with the installation department, and installation department perpendicular to main plane is opened there is mounting hole (12).
6. The precast concrete stair member of claim 1, wherein: and vertically upward insertion holes (13) are formed in the positions, close to the end faces, of the two sides of the ladder (11).
7. The precast concrete stair member of claim 1, wherein: the ladder (11) is provided with a mounting groove (14) near the edge.
8. The precast concrete stair member of claim 1, wherein: a slope (15) is arranged on one side of the stair body (1).
9. The precast concrete stair member of claim 1, wherein: the bottom surface of the installation part of the stair body (1) is used as a positioning surface, and the positioning surface is an arc surface protruding outwards.
10. The precast concrete stair member of claim 9, wherein: one side of the mounting part departing from the positioning surface is provided with a positioning groove (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020650091.4U CN212317340U (en) | 2020-04-26 | 2020-04-26 | Precast concrete stair component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020650091.4U CN212317340U (en) | 2020-04-26 | 2020-04-26 | Precast concrete stair component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212317340U true CN212317340U (en) | 2021-01-08 |
Family
ID=74031665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020650091.4U Active CN212317340U (en) | 2020-04-26 | 2020-04-26 | Precast concrete stair component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212317340U (en) |
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2020
- 2020-04-26 CN CN202020650091.4U patent/CN212317340U/en active Active
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