CN212836355U - Prefabricated staircase - Google Patents
Prefabricated staircase Download PDFInfo
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- CN212836355U CN212836355U CN202021664505.5U CN202021664505U CN212836355U CN 212836355 U CN212836355 U CN 212836355U CN 202021664505 U CN202021664505 U CN 202021664505U CN 212836355 U CN212836355 U CN 212836355U
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Abstract
The application relates to a prefabricated staircase belongs to construction technical field. The prefabricated staircase comprises a prefabricated staircase board, two prefabricated staircase beams and a fixing piece, wherein the prefabricated staircase board is provided with a plurality of first steps which are continuously arranged along the length direction of the prefabricated staircase board, each first step is arranged in an L shape and forms a right-angle space, at least one first step is provided with a reserved hole, and the upper end opening of the reserved hole is larger than the lower end opening; each prefabricated ladder beam is provided with a plurality of second steps which are continuously arranged along the length direction of the prefabricated ladder beam, each second step is used for being accommodated in the right-angle space and is abutted against each first step, a connecting piece is pre-embedded in at least one second step, and the connecting piece protrudes upwards out of the surface of the second step and protrudes into the reserved hole; the fixing piece is filled in the preformed hole from top to bottom by the slurry and used for fixing the connecting piece and downwards abutting against the inner wall of the preformed hole. This prefabricated staircase, simple structure, structural strength is high, and connection stability is good.
Description
Technical Field
The application relates to the technical field of building construction, particularly, relate to a prefabricated staircase.
Background
The prefabricated staircase of present assembly type building trade adopts whole board-like solid stair usually, and this kind of stair is from great, the construction installation link is loaded down with trivial details, waste time and energy, and it is not obvious that the part is equipped with the stair that subtracts heavy through-hole subtracts heavy effect, and the assembly construction of not being convenient for, wherein the product that structural strength hangs down still does not lack, has safe risk. And, current assembled prefabricated staircase, the step adopts bolted connection, and manual operation is loaded down with trivial details with the ladder beam to connection stability is relatively poor.
SUMMERY OF THE UTILITY MODEL
An object of this application is to provide a prefabricated staircase, simple structure, structural strength is high, and connection stability is good.
The application is realized by the following technical scheme:
the application provides a prefabricated staircase includes:
the prefabricated step plate is provided with a plurality of first steps which are continuously arranged along the length direction of the prefabricated step plate, each first step is arranged in an L shape and forms a right-angle space, at least one first step is provided with a reserved hole, and the upper end opening of the reserved hole is larger than the lower end opening;
the prefabricated ladder beam comprises two prefabricated ladder beams, a plurality of second steps, a plurality of connecting pieces and a plurality of prefabricated ladder beams, wherein the plurality of second steps are continuously arranged along the length direction of the prefabricated ladder beams;
the fixing piece is filled in the preformed hole from top to bottom by the slurry and used for fixing the connecting piece and downwards abutting against the inner wall of the preformed hole.
The prefabricated staircase has simple structure and good structural strength; the upper end opening based on preformed hole on the prefabricated step is greater than lower extreme open-ended structure for the inner wall top-down tilt inwards of preformed hole, the inner wall in preformed hole appears in the upper end opening, pour the mortar in the preformed hole after, the mortar that solidifies forms the mounting, the mounting can cooperate with the connecting piece, the inside wall in the downward crimping preformed hole of mounting simultaneously provides decurrent crimping power for prefabricated step, thereby with prefabricated step and prefabricated step locking, guarantee prefabricated step and the stability of being connected of prefabricated step.
In one embodiment, the thickness of the prefabricated step plate is 1/20-1/40 of the width of the prefabricated step plate.
In the above embodiment, because the prefabricated step plate is made of the ultra-high performance concrete, reinforcing steel bars are not required, the manufacturing difficulty is reduced, the thickness of the prefabricated step plate can be thinner, and 1/20-1/40 of the width can be selected according to the thickness on the premise of ensuring the overall strength.
In one embodiment, the thickness of the prefabricated step plate is 30-50 mm.
In the above embodiment, the thickness of the prefabricated staircase plate is too small, and the overall strength is not sufficient; the thickness is too large, and materials are wasted; the thickness of the prefabricated ladder plate is 30-50mm, so that good overall strength is guaranteed, and material waste is avoided.
In one embodiment, the connecting members are distributed at the upper end, the middle part and the lower end of the prefabricated ladder beam along the length direction of the prefabricated ladder beam.
In the above embodiment, the connecting pieces are distributed at the upper end, the middle part and the lower end of the prefabricated ladder beam, so that the acting force can be dispersed when the prefabricated ladder beam is hoisted, the hoisting safety is ensured, and the potential safety hazard caused by overlarge local stress due to too few hoisting points is avoided.
In one embodiment, a grout layer is arranged between the prefabricated ladder plate and the prefabricated ladder beam.
In the above embodiment, the arrangement of the mortar layer facilitates the installation and fixation of the prefabricated ladder plate on the prefabricated ladder beam.
In one embodiment, the two ends of the prefabricated ladder beam along the length direction of the prefabricated ladder beam are respectively and horizontally protruded outwards to form overlapping parts, and the overlapping parts at the two ends are respectively overlapped with the corresponding platforms.
In the above embodiment, can realize through overlap joint portion that prefabricated ladder beam and upper stair platform, lower floor's landing simply prop up and be connected, guarantee the connection stability of prefabricated ladder beam.
In an embodiment, each overlapping portion is provided with a connecting hole which penetrates through the overlapping portion from top to bottom, and the connecting hole is used for accommodating the embedded steel bars of the corresponding platform.
In the above embodiment, the prefabricated ladder beam and the upper platform or the lower platform are connected and positioned through the connecting hole.
In one embodiment, the prefabricated step plate is formed by integrally pouring the ultra-high performance concrete, the plurality of first steps are integrally formed, and the wall thickness of the first steps is uniform.
In the above embodiment, the prefabricated step plate is light in weight and good in structural strength by adopting the ultra-high performance concrete to be integrally cast. A plurality of first step wall thickness are even, guarantee that prefabricated step atress is reasonable.
In one embodiment, a chamfered table is formed at one end of the connecting piece, which is exposed out of the second step, the diameter of the upper end of the chamfered table is larger than that of the lower end of the chamfered table, and the chamfered table is used for being pressed downwards to the fixing piece.
In above-mentioned embodiment, through the big, the little structure of lower extreme in upper end of the truncated pyramid, can exert decurrent pressure to the mounting after solidifying to reinforcing mounting is to the decurrent crimping power of prefabricated step, guarantees the stability of being connected of prefabricated step and prefabricated ladder beam.
In one embodiment, the prefabricated ladder beam is a reinforced concrete prefabricated beam, an ultra-high performance concrete prefabricated beam or a steel beam.
In the above embodiment, the material of the prefabricated ladder beam has a plurality of selection modes, and according to different conditions, a reinforced concrete prefabricated beam, an ultrahigh-performance concrete prefabricated beam or a steel beam can be selected so as to ensure that the prefabricated ladder beam has better strength.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, 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 application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is an exploded view of a prefabricated staircase provided in an embodiment of the present application;
fig. 2 is a first schematic connection node diagram of a prefabricated staircase according to an embodiment of the present application;
fig. 3 is a second schematic view of a connection node of the prefabricated staircase according to the embodiment of the present application.
Icon: 100-prefabricating a stair; 10-prefabricating a ladder plate; 11-a first step; 111-right angle space; 112-preformed hole; 113-horizontal pedal; 114-vertical kick plate; 20-prefabricating the ladder beam; 21-a second step; 211-a connector; 2111-inverted prism table; 212-horizontal surface; 213-a vertical surface; 22-a lap joint; 221-connection hole; 30-a fixing member; 40-setting a pulp layer; 41-horizontal gap; 42-vertical gap.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The prefabricated staircase according to an embodiment of an aspect of the present application is described below with reference to the drawings.
As shown in fig. 1 to 3, the prefabricated staircase 100 according to the embodiment of the present application includes: the prefabricated step 10, two prefabricated step girders 20 and a fixing member 30.
Specifically, as shown in fig. 1, the prefabricated step ladder 10 defines a length direction and a width direction, the length direction is disposed at an acute angle with respect to the horizontal direction, and the width direction is perpendicular to the length direction. Prefabricated step 10 is for having a plurality of first steps 11 of continuous setting along its length direction, and each first step 11 is the setting of L type and forms right angle space 111, and at least one first step 11 is equipped with preformed hole 112, and preformed hole 112 runs through first step 11 along upper and lower direction, and the upper end opening of preformed hole 112 is greater than the lower extreme opening, is convenient for realize and prefabricated terraced roof beam 20's connection location. Each prefabricated ladder beam 20 is provided with a plurality of second steps 21 continuously arranged along the length direction thereof, each second step 21 is used for being accommodated in the right-angle space 111 and abutting against each first step 11, at least one second step 21 is embedded with a connecting piece 211, as shown in fig. 2 and 3, the connecting piece 211 protrudes upwards out of the surface of the second step 21 and protrudes into the reserved hole 112. As shown in fig. 2, the fixing member 30 is formed by filling slurry into the preformed hole 112 from top to bottom, and the fixing member 30 fixes the connecting member 211 and abuts against the inner wall of the preformed hole 112 downward.
The prefabricated staircase 100 has a simple structure and good structural strength; the upper end opening based on preformed hole 112 on prefabricated step 10 is greater than lower extreme open-ended structure, make the inner wall top-down tilt towards the inside of preformed hole 112, the inner wall of preformed hole 112 reveals in the upper end opening, pour the mortar in preformed hole 112 after, the mortar that solidifies forms mounting 30, mounting 30 can cooperate with connecting piece 211, the inside wall of preformed hole 112 is pressed down to mounting 30 simultaneously, provide decurrent crimping power for prefabricated step 10, thereby lock prefabricated step 10 and prefabricated step 20, guarantee prefabricated step 10 and prefabricated step 20's stability of being connected.
As shown in fig. 1, each first step 11 has a horizontal step 113 and a vertical kick plate 114, the horizontal step 113 and the vertical kick plate 114 are disposed in an inverted L shape, the horizontal step 113 and the vertical kick plate 114 are vertically disposed to form a right-angle space 111, and the preformed hole 112 is opened on the horizontal step 113 and penetrates through the horizontal step 113 in the up-down direction. Each second step 21 has a horizontal surface 212 for engaging the horizontal tread 113 and a vertical surface 213 for engaging the vertical riser 114.
In one embodiment, the prefabricated step 10 is formed by casting ultra-high performance concrete, and the first steps 11 are formed integrally and have uniform wall thickness. The prefabricated step plate 10 is light in weight and good in structural strength by adopting the ultra-high performance concrete to be integrally cast and molded. The wall thickness of the first steps 11 is uniform, and the stress of the prefabricated step ladder 10 is reasonable.
Because prefabricated step 10 adopts the ultra-high performance concrete, pours the shaping through mould an organic whole, consequently, need not to join in marriage the reinforcing bar, can adopt the formwork erection production, the production link is simple, has reduced the manufacturing degree of difficulty, and the thickness that ultra-high performance concrete material shaping made prefabricated step 10 when reaching standard strength is less than the thickness that ordinary concrete material made prefabricated step. In one embodiment, the thickness of the prefabricated step 10 is 1/20-1/40 of the width of the prefabricated step 10, which can not only ensure the overall lightness of the prefabricated step 10, but also save materials. The prefabricated step 10 relative weight of this embodiment is lighter, and hoist and mount is convenient, easily installs, prefabricated step 10 adopts mould production and not join in marriage the reinforcing bar, has avoided the complicacy of traditional prefabricated stair mould and shortcoming such as three-dimensional reinforcement skeleton ligature is loaded down with trivial details, and in the transportation, a plurality of prefabricated steps 10 can pile up the transportation, compare in prior art's roof beam and step integrated into one piece's scheme, the prefabricated step 10 of this embodiment can save space, need not to do extra protection and prevent that the corner of stair is knocked out badly.
Optionally, the thickness of the prefabricated step ladder 10 is 30-50 mm. The thickness of the prefabricated step plate 10 is too small, and the integral strength is not enough; the thickness is too large, and materials are wasted; the thickness of the prefabricated step plate 10 is 30-50mm, so that the better integral strength is ensured, and the material waste is avoided.
As shown in fig. 1, the two ends of the precast ladder beam 20 along the length direction thereof are respectively protruded with overlapping parts 22 horizontally and outwardly, and the overlapping parts 22 at the two ends are respectively overlapped with the corresponding platforms (upper and lower platforms). The simple support connection of the prefabricated ladder beam 20 with the upper platform and the lower platform can be realized through the lapping part 22, so that the connection stability of the prefabricated ladder beam 20 is ensured.
Furthermore, each overlapping part 22 is provided with a connecting hole 221 which penetrates through the upper part and the lower part, and the connecting hole 221 is used for accommodating the embedded steel bars of the corresponding platform.
The connection and positioning with the upper deck can be realized through the connection hole 221 on the lap joint part 22 of the upper end of the prefabricated ladder beam 20, and the connection and positioning with the lower deck can be realized through the connection hole 221 on the lap joint part 22 of the lower end of the prefabricated ladder beam 20.
In one embodiment, as shown in fig. 2, a chamfered platform 2111 is formed at one end of the connecting member 211 exposed out of the second step 21, the upper end diameter of the chamfered platform 2111 is greater than the lower end diameter, and the chamfered platform 2111 is used for pressing down on the fixing member 30. Due to the structure that the upper end of the chamfered platform 2111 is large and the lower end is small, downward pressure can be applied to the solidified fixing element 30, so that the downward pressure of the fixing element 30 on the prefabricated ladder board 10 is enhanced, and the connection stability of the prefabricated ladder board 10 and the prefabricated ladder beam 20 is ensured.
In one embodiment, as shown in fig. 1, the connection members 211 are distributed at the upper end, the middle portion and the lower end of the precast ladder beam 20 along the length direction of the precast ladder beam 20, that is, three lifting points are provided in the length direction of the precast ladder beam 20. In a similar way, the preformed holes 112 are distributed at the upper end, the middle part and the lower end of the prefabricated ladder plate 10 to form three connecting nodes with the prefabricated ladder beam 20, so that the connection stability of the prefabricated ladder plate 10 and the prefabricated ladder beam 20 is ensured.
Connecting pieces 211 are distributed at the upper end, the middle part and the lower end of the prefabricated ladder beam 20, so that acting force can be dispersed when the prefabricated ladder beam 20 is hoisted, hoisting safety is guaranteed, and potential safety hazards caused by overlarge local stress due to too few hoisting points are avoided.
In one embodiment, as shown in fig. 2, a bedding layer 40 is disposed between the prefabricated step ladder 10 and the prefabricated ladder beam 20. The setting of the mortar layer 40 is convenient for realizing the installation and fixation of the prefabricated ladder board 10 on the prefabricated ladder beam 20. The mortar layer 40 is a common concrete layer, and concrete mortar forms the mortar layer 40, that is, the prefabricated step plank 10 and the prefabricated step beam 20 are connected by a mortar method.
As shown in fig. 2, the horizontal pedal 113 is opposite to the horizontal surface 212 up and down, and has a horizontal gap 41 along the up and down direction; the vertical kick plate 114 corresponds to the vertical surface 213 in the front-rear direction with a vertical gap 42 therebetween, and each horizontal gap 41 communicates with each adjacent vertical gap 42. The opening of the horizontal gap 41 at the top end is used as a pouring opening, common concrete slurry is poured, the horizontal gap 41 and the vertical gap 42 are filled to form the slurry sitting layer 40, the common concrete slurry flows from top to bottom due to the mutual communication design of the horizontal gap 41 and the vertical gap 42, and each horizontal gap 41 and each vertical gap 42 can be filled with the common concrete slurry more conveniently. The setting of the mortar layer 40 enables the installation accuracy of the prefabricated ladder board 10 and the prefabricated ladder beam 20 to be higher.
The exposed height of the connecting piece 211 is greater than the thickness of the mortar layer 40, and when the prefabricated step ladder 10 is assembled with the prefabricated ladder beam 20, the connecting piece 211 penetrates through the mortar layer 40 and extends into the reserved hole 112.
The setting of fastening bolt can be with prefabricated step 10 and prefabricated ladder beam 20 locking, increases prefabricated step 10 and prefabricated ladder beam 20's stability of being connected. The fastening bolts can be arranged along the length direction of the prefabricated ladder beam 20 at intervals to increase the connection points of the prefabricated ladder beam 20 and the prefabricated ladder plate 10 and ensure that the prefabricated ladder plate 10 and the prefabricated ladder beam 20 have good connection stability.
In an embodiment, the precast ladder beam 20 is a common concrete precast beam (such as C25, C30, etc.), and steel bars are embedded therein, and the steel bars are not exposed on the surface of the precast ladder beam 20, which is not only favorable for aesthetic appearance, but also favorable for the steel bars to bear the external force acting on the precast ladder beam 20, and is favorable for enhancing the overall strength. The two prefabricated ladder beams 20 are manufactured by the same mold and have the same structure; the reinforced concrete precast beam has better strength, is convenient to bear stress and has good structural safety.
In other embodiments, the precast ladder beam 20 may also be an ultra-high performance concrete precast beam or a steel beam, so that the precast ladder beam 20 has multiple options, and a user can select the precast ladder beams 20 made of different materials according to different environments.
The beneficial effect of the prefabricated staircase 100 of this application embodiment is:
1. the prefabricated staircase 100 is reasonable in stress and clear in force transmission path, the calculated span of the stair plates of the prefabricated staircase 100 is only the width of the staircase, the structural safety is good, and the material utilization rate is high;
2. the prefabricated step plates 10 and the prefabricated step beams 20 are prefabricated in a factory respectively, the prefabricated step plates 10 are produced by adopting a vertical mold without reinforcing steel bars, and the complex die and complex binding of a three-dimensional reinforcing steel bar framework of the traditional prefabricated staircase 100 are avoided;
3. the advantages of ultrahigh strength and no reinforcement plastic forming of the ultrahigh-performance concrete are fully utilized, and the manufacturing difficulty and cost are reduced;
4. the prefabricated staircase 100 can be combined and formed on a construction site, and the connection joints are simple.
It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A prefabricated staircase, comprising:
the prefabricated step plate is provided with a plurality of first steps which are continuously arranged along the length direction of the prefabricated step plate, each first step is arranged in an L shape and forms a right-angle space, at least one first step is provided with a reserved hole, and the upper end opening of the reserved hole is larger than the lower end opening of the reserved hole;
each prefabricated ladder beam is provided with a plurality of second steps which are continuously arranged along the length direction of the prefabricated ladder beam, each second step is used for being accommodated in the right-angle space and abutting against each first step, a connecting piece is pre-embedded in at least one second step, and the connecting piece protrudes upwards out of the surface of the second step and protrudes into the reserved hole;
the fixing piece is formed by filling slurry into the preformed hole from top to bottom, and the fixing piece is used for fixing the connecting piece and downwards abutting against the inner wall of the preformed hole.
2. The prefabricated staircase of claim 1, wherein the thickness of the prefabricated step panel is 1/20-1/40 of the width of the prefabricated step panel.
3. The prefabricated staircase of claim 2, wherein the thickness of the prefabricated staircase is 30-50 mm.
4. The prefabricated staircase of claim 1, wherein the connectors are distributed along the length of the prefabricated staircase beams at the upper, middle and lower ends of the prefabricated staircase beams.
5. The prefabricated staircase of claim 1, wherein a grout layer is provided between the prefabricated step panels and the prefabricated step girders.
6. The prefabricated staircase as claimed in claim 1, wherein overlapping portions are formed at both ends of the prefabricated staircase beam in the length direction thereof to be horizontally protruded outward, and the overlapping portions at both ends are overlapped with the corresponding landings, respectively.
7. The prefabricated staircase of claim 6, wherein each of the overlapping portions has a connecting hole extending therethrough, the connecting hole being adapted to receive a corresponding embedded steel bar of the platform.
8. The prefabricated staircase of claim 1, wherein the prefabricated step plates are integrally cast from ultra-high performance concrete only, and the first steps are integrally formed and have uniform wall thickness.
9. The prefabricated staircase of claim 1, wherein the end of the connecting member exposed from the second step is formed with a truncated pyramid having an upper end diameter larger than a lower end diameter, the truncated pyramid being adapted to be pressed down onto the fixing member.
10. The prefabricated staircase of claim 1, wherein the prefabricated staircase beams are reinforced concrete prefabricated beams, ultra-high performance concrete prefabricated beams or steel beams.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021664505.5U CN212836355U (en) | 2020-08-11 | 2020-08-11 | Prefabricated staircase |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021664505.5U CN212836355U (en) | 2020-08-11 | 2020-08-11 | Prefabricated staircase |
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| CN212836355U true CN212836355U (en) | 2021-03-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587671A (en) * | 2017-10-31 | 2018-01-16 | 江苏金贸科技发展有限公司 | A kind of precast stair for being easy to lifting |
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2020
- 2020-08-11 CN CN202021664505.5U patent/CN212836355U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587671A (en) * | 2017-10-31 | 2018-01-16 | 江苏金贸科技发展有限公司 | A kind of precast stair for being easy to lifting |
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