CN213806246U - Precast concrete assembled stair - Google Patents
Precast concrete assembled stair Download PDFInfo
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- CN213806246U CN213806246U CN202021798547.8U CN202021798547U CN213806246U CN 213806246 U CN213806246 U CN 213806246U CN 202021798547 U CN202021798547 U CN 202021798547U CN 213806246 U CN213806246 U CN 213806246U
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- ladder
- step plate
- stair
- precast concrete
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Abstract
The utility model discloses a precast concrete assembled stair, which comprises an L-shaped beam, a precast ladder beam and a step plate; the stair main body adopts a split type assembly structure of a stair beam and a step plate, and the stair beam is at least provided with two step plates for supporting; the steps on different ladder beams are consistent in number and shape, and the step plates are matched with the ladder beams for use; embedding anchoring steel bars on the ladder beam, and reserving mounting holes at the supporting positions of two ends of the ladder beam; the L-shaped beam is provided with a limiting piece, and after the ladder beam is installed, the limiting piece is inserted into the installation hole to limit the ladder beam; the step plate is provided with a positioning hole which is matched with an anchoring steel bar pre-embedded on the ladder beam to play a role in positioning the step plate; a reinforcing structure is arranged in the step plate, and comprises transverse steel bars and longitudinal steel bars; the step plate comprises a step plate and a kickplate. The utility model discloses adopt split type package assembly to form the stair main part with ladder roof beam and terraced board, greatly reduced the construction degree of difficulty, when the installation is convenient during the construction, saved a large amount of concrete materials.
Description
Technical Field
The utility model relates to an assembly type structure prefabricated component technical field, concretely relates to precast concrete assembled stair.
Background
With the continuous progress of society and the rapid development of science and technology, various industries change greatly, and the building industry is qualitatively developed. More and more building construction technologies begin to emerge, the form and the performance of building facilities are changed, and the form of the building facilities begins to show a diversified change trend.
The reinforced concrete structure is used as a main construction element of a building, and the construction amount in the building construction and the specific gravity of the components of the building structure are large. The prefabricated reinforced concrete structure has the advantages of labor saving, standardized production, civilized construction guarantee and the like, and the prefabricated concrete stairway is more and more widely applied to residential buildings in recent years. But the common plate-type prefabricated part has heavier weight and brings inconvenience to hoisting construction to a certain extent. Meanwhile, the common plate-type prefabricated staircase has large material consumption on concrete and steel bars.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a precast concrete assembled stair.
The purpose of the utility model is realized through the following technical scheme:
a precast concrete assembled stair comprises an L-shaped beam, a precast ladder beam and a step plate; the stair main body adopts a split type assembly structure of a stair beam and a step plate, and the stair beam is at least provided with two step plates for supporting; the steps on different ladder beams are consistent in number and shape, and the step plates are matched with the ladder beams for use;
embedding anchoring steel bars on the ladder beam, and reserving mounting holes at the supporting positions of two ends of the ladder beam; the L-shaped beam is provided with a limiting piece, and after the ladder beam is installed, the limiting piece is inserted into the installation hole to limit the ladder beam; the step plate is provided with a positioning hole which is matched with an anchoring steel bar pre-embedded on the ladder beam to play a role in positioning the step plate;
a reinforcing structure is arranged in the step plate, the reinforcing structure comprises transverse steel bars and longitudinal steel bars, and the transverse steel bars and the longitudinal steel bars are bound together in a transverse and longitudinal staggered manner; the step plate comprises a pedal and a kickplate, wherein transverse steel bars and longitudinal steel bars are arranged in the pedal, and the reinforcing structure and the concrete form the pedal together; set up vertical reinforcing bar in the kickplate, vertical reinforcing bar forms the kickplate together with the concrete.
Preferably, the L-shaped beam is a precast beam or a cast-in-place beam.
As a preferred mode, limiting pieces are arranged on two sides of the L-shaped beam, the limiting pieces can be a plurality of embedded steel bars, and gaps of at least 10mm are formed among the embedded steel bars; a plurality of mounting holes are reserved on two sides of supporting positions at two ends of the ladder beam, and the number of the vertical beams of the mounting holes is consistent with that of the limiting parts.
Preferably, the longitudinal steel bars and the transverse steel bars are fixed by spot welding.
Preferably, the concave-convex angle of the prefabricated step plate is a circular arc chamfer.
Preferably, the radius of the circular arc chamfer is 30 mm.
Preferably, the pedal is provided with an anti-slip groove.
Preferably, the anti-slip grooves are wave-shaped grooves, and the cross sections of the wave-shaped grooves are arc-shaped.
Preferably, the thickness of the reinforcement structure to the bottom surface of the deck is 2/3-1 the thickness of the reinforcement structure to the top surface of the deck.
Preferably, the thickness of the vertical steel bars from the front surface of the pedal is 2/3-1 of the thickness of the vertical steel bars from the back surface of the pedal.
The utility model has the advantages that: adopt split type package assembly to form the stair main part with ladder roof beam and terraced board, greatly reduced the construction degree of difficulty, when the construction installation is convenient, saved a large amount of concrete materials.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a top view of the prefabricated staircase according to the present invention;
FIG. 2 is a longitudinal sectional view of the prefabricated staircase structure according to the present invention;
FIG. 3 is a structural view of the prefabricated step plate of the present invention;
FIG. 4 is a structural view of reinforcement of the prefabricated step plate;
FIG. 5 is a perspective view of a prefabricated step plate;
in the figure, 1-L-shaped beam, 2-ladder beam, 3-step plate, 4-anchoring reinforcing steel bar, 5-elastic material, 6-transverse reinforcing steel bar, 7-longitudinal reinforcing steel bar and 8-arc chamfer angle.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the presence of a first feature above or below a second feature may encompass direct contact of the first and second features, and may also encompass contact of the first and second features not being in direct contact, but via additional features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. Including a first feature being directly below and obliquely below a second feature, or simply indicating that the first feature is at a lesser elevation than the second feature, if present below, under or below the second feature.
The common plate-type prefabricated staircase has large material consumption on concrete and steel bars, and is inconvenient to construct and influences the construction progress due to the adoption of a cast-in-place form. Therefore, as shown in fig. 1-3, the utility model provides a precast concrete assembled stair, which comprises an L-shaped beam 1, a precast ladder beam 2 and a tread plate 3; the stair main body adopts a split type assembly structure of a stair beam 2 and a step plate 3 (namely, the stair beam 2 and the step plate 3 are assembled into the stair main body), and the stair beam 2 is at least provided with two step plates 3 for supporting; the steps on different ladder beams 2 are consistent in number and shape, and the step plates 3 are matched with the ladder beams 2 for use;
anchoring steel bars 4 are pre-embedded on the ladder beam 2, and mounting holes are reserved at the supporting positions of two ends of the ladder beam 2; the L-shaped beam 1 is provided with a limiting piece, and after the ladder beam 2 is installed, the limiting piece is inserted into the installation hole to limit the ladder beam 2; the step plate 3 is provided with a positioning hole which is matched with an anchoring steel bar 4 pre-embedded on the ladder beam 2 to play a role in positioning the step plate 3;
a reinforcing structure is arranged in the step plate 3, the reinforcing structure comprises transverse steel bars 6 and longitudinal steel bars 7, and the transverse steel bars 6 and the longitudinal steel bars 7 are bound together in a transverse and longitudinal staggered manner; the step plate 3 comprises a pedal and a kickplate, wherein a transverse steel bar 6 and a longitudinal steel bar 7 are arranged in the pedal, and the reinforcing structure and concrete form the pedal together; set up vertical reinforcing bar in the kickplate, vertical reinforcing bar forms the kickplate together with the concrete. The vertical reinforcing steel bars and the longitudinal reinforcing steel bars 7 can be made by bending one or more connected reinforcing steel bars.
In a preferred embodiment, the L-beam 1 is a precast beam or a cast-in-place beam. There is no special requirement for the L-shaped beam 1, generally speaking, the staircase cast-in-place L-shaped beam 11 and the corresponding slab and rest platform structure are adopted, so the existing L-shaped beam 1 can be adopted, and the L-shaped beam 1 can be assembled with the ladder beam 2 subsequently, and the construction progress is not affected. In addition, if the prefabricated L-shaped beam 1 is adopted, the prefabricated L-shaped beam can be manufactured in advance and is convenient to install on site. The difference between the two is that the appropriate L-beam 1 is selected according to the specific staircase environment. The ladder beam 2 can be used for calculating the bearing capacity and reinforcing bars according to a common simple supporting beam.
In a preferred embodiment, limiting pieces are arranged on two sides of the L-shaped beam 1, the limiting pieces can be a plurality of embedded steel bars, and a gap of at least 10mm is formed between the embedded steel bars; a plurality of mounting holes are reserved on two sides of supporting positions at two ends of the ladder beam 2, and the number of the vertical beams of the mounting holes is consistent with that of the limiting parts. The number of embedded steel bars is at least two to guarantee the joint strength of ladder roof beam 2 and L type roof beam 1.
In a preferred embodiment, the longitudinal bars 7 and the transverse bars 6 are fixed by spot welding. Except conventional steel wire ligature, the utility model discloses still adopt the form of electric welding to retrain longitudinal reinforcement 7 and transverse reinforcement 6, guarantee joint strength between them. It should be noted that the utility model discloses not adopt the form of full weld, adopt the advantage of electric welding to lie in, the efficiency of construction is high and can guarantee joint strength. The longitudinal reinforcement 7 and the transverse reinforcement 6, which are wrapped with concrete, are not required to have aesthetic properties, and therefore, full welding is not considered.
In a preferred embodiment, the concave-convex angle of the prefabricated tread plate 3 is a rounded chamfer 8. The radius of the circular arc chamfer 8 is 30 mm. In the embodiment, the turning part of the stair step is in the form of the arc chamfer 8, so that the phenomenon that the turning part is too sharp and damages people or objects is caused is avoided. In addition, the construction difficulty is low by adopting the arc chamfer 8.
In a preferred embodiment, the footplate is provided with a non-slip groove. The anti-skid groove is a wave-shaped groove, and the cross section of the wave-shaped groove is arc-shaped. In order to form difference with the traditional step plate 3 and better realize the weight reduction of the step plate 3, the form of slotting on the step plate is adopted, the use amount of concrete is reduced, meanwhile, a certain weight reduction effect can be achieved, and the lifting and the carrying are convenient.
The thickness of the reinforcement structure to the bottom surface of the deck is 2/3-1 the thickness of the reinforcement structure to the top surface of the deck. The thickness of the vertical steel bars from the front surface of the pedal is 2/3-1 of the thickness of the vertical steel bars from the back surface of the pedal. The thickness from the vertical steel bars to the front surface of the pedal is consistent with the thickness from the reinforcing structure to the bottom surface of the pedal; the thickness from the vertical steel bars to the back of the pedal is consistent with the thickness from the reinforcing structure to the top surface of the pedal. To the thickness of concrete, the utility model discloses make above-mentioned design, can play on the one hand and subtract heavy effect, on the other hand can not influence the shaping quality of step plate 3.
The utility model discloses a precast concrete assembled stair, which is composed of a precast stair beam 2 and an integral continuous precast tread plate 3; the two ends of the prefabricated ladder beam 2 are supported on a cast-in-place L-shaped structural beam in the staircase, the cast-in-place L-shaped beam 1 is embedded with the anchoring reinforcing steel bars 4, and the prefabricated ladder beam 2 is fixed by inserting the anchoring reinforcing steel bars 4. The pre-buried anchor reinforcing bar 4 in the corresponding flier 3 position in precast beam top, precast flier 3 is fixed through inserting anchor reinforcing bar 4. The prefabricated step plate 3 is integrally and continuously prefabricated, the longitudinal steel bars 7 can be continuously bent, and the transverse steel bars 6 are arranged along the width direction of the stairs. The utility model discloses it is convenient to install during the construction of prefabricated staircase, also can save a large amount of concrete material simultaneously.
In one embodiment, as shown in fig. 1 to 5, the present invention relates to a light precast concrete fabricated stairway, which comprises the following steps:
a. constructing a staircase room cast-in-place L-shaped beam 1 and corresponding floor slab and rest platform plate structures;
b. prefabricating a stair beam 2, wherein anchoring steel bars 4 are embedded in the stair beam 2, and holes for the anchoring steel bars are reserved in supporting positions at two ends of the stair beam 2;
c. binding longitudinal steel bars 7 and transverse steel bars 6 of the step plate 3, prefabricating the integral step plate 3, wherein concave and convex angles on the upper surface and the lower surface of the step plate 3 can adopt arc chamfers 8, and anchoring rib holes are reserved in the mounting positions of the step plate 3 corresponding to the ladder beams 2;
d. the prefabricated ladder beam 2 is hoisted by adopting an instrument, the ladder beam 2 is inserted into the anchoring reinforcing steel bar 4, the ladder beam 2 is installed to a preset position, and the hole of the reinforcing steel bar is filled with grouting material. And filling a gap between the ladder beam 2 and the cast-in-place L-shaped beam 1 with a compressible elastic material 5.
e. The prefabricated step plate 3 is hoisted by adopting an instrument, the step plate 3 is inserted into the anchoring steel bar 4, the step plate 3 is installed to a preset position, and the hole of the steel bar is filled with grouting material.
f. And constructing stair railings and decoration layers.
The utility model relates to a light precast concrete stair which can be adopted in earthquake fortification of 6 degrees (or earthquake fortification intensity of 6 degrees) and temporary buildings, the precast concrete stair is composed of a precast ladder beam 2 and an integral continuous precast tread plate 3; the two ends of the prefabricated ladder beam 2 are supported on a cast-in-place L-shaped structural beam in the staircase, the cast-in-place L-shaped beam 1 is embedded with the anchoring reinforcing steel bars 4, and the prefabricated ladder beam 2 is fixed by inserting the anchoring reinforcing steel bars 4. The pre-buried anchor reinforcing bar 4 in the corresponding flier 3 position in precast beam top, precast flier 3 is fixed through inserting anchor reinforcing bar 4. The prefabricated step plate 3 is integrally and continuously prefabricated, the longitudinal steel bars 7 can be continuously bent, and the transverse steel bars 6 are arranged along the width direction of the stairs. The concave convex angle of the upper surface and the lower surface of the prefabricated step plate 3 can adopt an arc chamfer 8, and the radius of the arc can be 30 mm.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention. The above description is only exemplary of the present invention and should not be taken as limiting, and all changes, equivalents, and improvements made within the spirit and principles of the present invention should be understood as being included in the scope of the present invention.
Claims (10)
1. The utility model provides a precast concrete assembled stair which characterized in that: comprises an L-shaped beam, a prefabricated ladder beam and a step plate; the stair main body adopts a split type assembly structure of a stair beam and a step plate, and the stair beam is at least provided with two step plates for supporting; the steps on different ladder beams are consistent in number and shape, and the step plates are matched with the ladder beams for use;
embedding anchoring steel bars on the ladder beam, and reserving mounting holes at the supporting positions of two ends of the ladder beam; the L-shaped beam is provided with a limiting piece, and after the ladder beam is installed, the limiting piece is inserted into the installation hole to limit the ladder beam; the step plate is provided with a positioning hole which is matched with an anchoring steel bar pre-embedded on the ladder beam to play a role in positioning the step plate;
a reinforcing structure is arranged in the step plate, the reinforcing structure comprises transverse steel bars and longitudinal steel bars, and the transverse steel bars and the longitudinal steel bars are bound together in a transverse and longitudinal staggered manner; the step plate comprises a pedal and a kickplate, wherein transverse steel bars and longitudinal steel bars are arranged in the pedal, and the reinforcing structure and the concrete form the pedal together; set up vertical reinforcing bar in the kickplate, vertical reinforcing bar forms the kickplate together with the concrete.
2. The precast concrete fabricated stairway of claim 1, wherein: the L-shaped beam is a precast beam or a cast-in-place beam.
3. A precast concrete fabricated stairway according to claim 1 or 2, wherein: limiting pieces are arranged on two sides of the L-shaped beam, the limiting pieces can be a plurality of embedded steel bars, and gaps of at least 10mm are formed among the embedded steel bars; a plurality of mounting holes are reserved on two sides of supporting positions at two ends of the ladder beam, and the number of the vertical beams of the mounting holes is consistent with that of the limiting parts.
4. The precast concrete fabricated stairway of claim 1, wherein: the longitudinal steel bars and the transverse steel bars are fixed by spot welding.
5. The precast concrete fabricated stairway of claim 1, wherein: the concave-convex angle of the prefabricated step plate adopts an arc chamfer.
6. The precast concrete fabricated stairway of claim 5, wherein: the radius of the arc chamfer is 30 mm.
7. The precast concrete fabricated stairway of claim 1, wherein: the pedal is provided with an anti-skid groove.
8. The precast concrete fabricated stairway of claim 7, wherein: the anti-skid groove is a wave-shaped groove, and the cross section of the wave-shaped groove is arc-shaped.
9. The precast concrete fabricated stairway of claim 1, wherein: the thickness of the reinforcement structure to the bottom surface of the deck is 2/3-1 the thickness of the reinforcement structure to the top surface of the deck.
10. A precast concrete fabricated staircase according to claim 1 or 9, wherein: the thickness of the vertical steel bars from the front surface of the pedal is 2/3-1 of the thickness of the vertical steel bars from the back surface of the pedal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021798547.8U CN213806246U (en) | 2020-08-25 | 2020-08-25 | Precast concrete assembled stair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021798547.8U CN213806246U (en) | 2020-08-25 | 2020-08-25 | Precast concrete assembled stair |
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| Publication Number | Publication Date |
|---|---|
| CN213806246U true CN213806246U (en) | 2021-07-27 |
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| CN202021798547.8U Active CN213806246U (en) | 2020-08-25 | 2020-08-25 | Precast concrete assembled stair |
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| CN (1) | CN213806246U (en) |
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- 2020-08-25 CN CN202021798547.8U patent/CN213806246U/en active Active
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