CN214834198U - Assembled sliding steel stair for concrete main body structure - Google Patents
Assembled sliding steel stair for concrete main body structure Download PDFInfo
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- CN214834198U CN214834198U CN202120738844.1U CN202120738844U CN214834198U CN 214834198 U CN214834198 U CN 214834198U CN 202120738844 U CN202120738844 U CN 202120738844U CN 214834198 U CN214834198 U CN 214834198U
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Abstract
The utility model discloses an assembled sliding steel stair for concrete main body structure, L shape steel ladder roof beam and a plurality of steel including two relative installations between the adjacent two-layer concrete structure roof beam about concrete main body structure stairwell are marked time, the concrete structure bracket of built-in steel built-in fitting has been built in the concrete structure lower part outside, L shape bedplate passes through the support fixed plate and is connected with the steel built-in fitting, be provided with the sliding layer between the horizontal bottom plate of L shape bedplate and the steel built-in fitting, be provided with the buffer layer between the vertical curb plate of L shape bedplate and the concrete structure upper portion lateral wall, L shape steel ladder roof beam is as an organic whole with the horizontal bottom plate upper surface connection of L shape bedplate. The utility model discloses differentiate the large-scale component of stair into simple structure's little component, adopt the mill prefabrication, assemble it into steel stair at the job site, be used for concrete major structure with steel stair, sliding support is adopted at both ends, accords with the assumption of not considering stair rigidity in the structural model calculation, does benefit to the antidetonation.
Description
Technical Field
The utility model belongs to the technical field of concrete major structure construction steel stair, concretely relates to assembled slip steel stair for concrete major structure.
Background
At present, the country carries out the assembly type building form and develops the industrialized building mode, so a large number of assembly type technologies are promoted, wherein, the stairs are taken as an important force transmission and traffic component in the building; or the stairs are prefabricated in a factory and transported to a construction site for installation.
The existing method has the following defects:
first, cast-in-place stair can't assemble, and the prefabricated stair assembly efficiency of mill is too low, can't satisfy the demand of current or future high-end technique.
Secondly, cast-in-place stairs need formwork support, and the stair formwork support is difficult, and the manual input is big, and construction cost is high.
Thirdly, the stair does not meet the requirements of green buildings, pollution is increased, resources are wasted, the stair cannot be reused once being formed, and a large amount of building waste is generated during reconstruction.
Fourthly, the concrete structure is heavy in self weight, the dead weight of the whole structure is increased, and the construction is inconvenient.
Fifthly, the actual engineering is not consistent with the calculation model, the stair stiffness exists in the actual engineering, and the main calculation model is not considered.
Sixthly, with the development of the times, the new technology comes out endlessly, the requirements of supervision departments and owners on construction quality, cost, technology and the like are higher and higher, and the complex, rigid and rough and laggard technical method is difficult to meet the new construction requirements of modern refinement and flexibility and is gradually eliminated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed against, provide a concrete is assembled sliding steel stair for major structure, its novel in design is reasonable, differentiate into simple structure's little component with stair large component, adopt the mill prefabrication, assemble it into steel stair at the job site, be used for concrete major structure with steel stair, sliding support is adopted at both ends, accord with the assumption of not considering stair rigidity in the structural model calculates, do benefit to the antidetonation, therefore, the clothes hanger is strong in practicability, and convenient to popularize and use.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a concrete major structure is with assembled sliding steel stair which characterized in that: the concrete main structure stairwell comprises two L-shaped steel ladder beams and M steel steps, wherein the two L-shaped steel ladder beams are oppositely arranged between two layers of concrete structure beams which are adjacent up and down in the concrete main structure stairwell, and the M steel steps are sequentially arranged between the two L-shaped steel ladder beams in an assembling mode, wherein M is a positive integer not less than 2;
the concrete structure beam positioned at the lower layer in the two layers of concrete structure beams adjacent to each other up and down is a low-layer concrete structure beam, and the concrete structure beam positioned at the high layer in the two layers of concrete structure beams adjacent to each other up and down is a high-layer concrete structure beam;
a lower concrete structure bracket is constructed on the lower portion of the lower concrete structure beam facing the stairwell, a lower steel embedded part is embedded in the lower concrete structure bracket, a lower L-shaped support plate is connected with the lower steel embedded part through a lower support fixing plate, a steel stair low-position sliding layer is arranged between a horizontal bottom plate of the lower L-shaped support plate and the lower steel embedded part, a steel stair low-position sliding buffer layer is arranged between a vertical side plate of the lower L-shaped support plate and the upper outer side wall of the lower concrete structure beam facing the stairwell, and the low bottom of the L-shaped steel ladder beam is connected with the upper surface of the horizontal bottom plate of the lower L-shaped support plate into a whole;
a high-rise concrete structure bracket is constructed on the outer side of the lower part of the high-rise concrete structure beam facing the stairwell, a high-rise steel embedded part is embedded in the high-rise concrete structure bracket, a high-rise L-shaped support plate is connected with the high-rise steel embedded part through a high-rise support fixing plate, a steel stair high-position sliding layer is arranged between a horizontal bottom plate of the high-rise L-shaped support plate and the high-rise steel embedded part, a steel stair high-position sliding buffer layer is arranged between a vertical side plate of the high-rise L-shaped support plate and the outer side wall of the upper part of the high-rise concrete structure beam facing the stairwell, and the high-position bottom of the L-shaped steel ladder beam is connected with the upper surface of the horizontal bottom plate of the high-rise L-shaped support plate into a whole;
the rectangular hole has all been seted up at the horizontal bottom plate middle part of low level L shape bedplate and high-rise L shape bedplate, and the connecting rod that low level steel built-in fitting stretches out low level concrete structure bracket passes the rectangular hole on the low level L shape bedplate, and the connecting rod that high level steel built-in fitting stretches out high-rise concrete structure bracket passes the rectangular hole on the high-rise L shape bedplate.
Foretell assembled slip steel stair for concrete major structure, its characterized in that: the low-rise concrete structure beam and the low-rise concrete structure bracket are integrally constructed, and the high-rise concrete structure beam and the high-rise concrete structure bracket are integrally constructed.
Foretell assembled slip steel stair for concrete major structure, its characterized in that: the lower bottom of the L-shaped steel ladder beam is connected to the upper surface end of the horizontal bottom plate of the low-layer L-shaped support plate, and the upper bottom of the L-shaped steel ladder beam is connected to the upper surface end of the horizontal bottom plate of the high-layer L-shaped support plate.
Foretell assembled slip steel stair for concrete major structure, its characterized in that: l shape steel ladder beam includes L shape steel ladder beam curb plate and L shape steel ladder beam flange board, and L shape steel ladder beam flange board is including the high-order horizontal flange board, middle part slope flange board and the low level L shape flange board that connect gradually, the horizontal bottom plate upper surface welding of high-order horizontal flange board and high-rise L shape bedplate, the horizontal flange board in bottom of low level L shape flange board and the horizontal bottom plate upper surface welding of low level L shape bedplate.
Foretell assembled slip steel stair for concrete major structure, its characterized in that: l shape steel ladder beam curb plate is provided with M steel otic placode of marking time along length direction, the steel mounting hole of marking time has been seted up on the steel otic placode of marking time.
Foretell assembled slip steel stair for concrete major structure, its characterized in that: the M steel stepping ear plates comprise a flat steel stepping ear plate and M-1L-shaped steel stepping ear plates, the M steel stepping comprises a flat steel stepping and M-1L-shaped steel stepping, the flat steel stepping is installed on the flat steel stepping ear plates, and the L-shaped steel stepping is installed on the L-shaped steel stepping ear plates.
Foretell assembled slip steel stair for concrete major structure, its characterized in that: the flat steel steps are connected with the flat steel step ear plates through high-strength bolts, and the L-shaped steel steps are connected with the L-shaped steel step ear plates through high-strength bolts.
Foretell assembled slip steel stair for concrete major structure, its characterized in that: and the low-position sliding layer of the steel stair and the high-position sliding layer of the steel stair are graphite powder sliding layers.
Foretell assembled slip steel stair for concrete major structure, its characterized in that: the steel stair low-position slippage buffer layer and the steel stair high-position slippage buffer layer are polystyrene board buffer layers.
Compared with the prior art, the utility model has the following advantage:
1. the utility model constructs the lower concrete bracket with the built-in low-layer steel embedded part on the lower part of the low-layer concrete structural beam facing the stairwell and constructs the high-layer concrete structural bracket with the built-in high-layer steel embedded part on the lower part of the high-layer concrete structural beam facing the stairwell, so as to provide a fixed installation foundation for two oppositely installed L-shaped steel ladder beams, thereby facilitating the steel stairwell to be used for a concrete structure, the high-low layer L-shaped support plate is respectively connected with the high-low layer steel embedded part through the high-low layer support fixing plate, the low-position bottom of the L-shaped steel ladder beam is connected with the upper surface of the horizontal bottom plate of the low-layer L-shaped support plate into a whole, the high-position bottom of the L-shaped steel ladder beam is connected with the upper surface of the horizontal bottom plate of the high-layer L-shaped support plate into a whole, no formwork is required on site, the formwork material can be reduced, the labor investment is reduced, the construction cost is reduced, and the green building requirement is met, can reduce pollution, save resources and is convenient for popularization and use.
2. The utility model discloses an assembled installation M steel is marked time in proper order between two L shape steel ladder roof beams, differentiate the large-scale component of stair into simple structure's little component, adopt the mill prefabrication, assemble it into steel stair at the job site, can be used to the assembled structure, accord with the direction of building development at present, all components can be prefabricated in the mill, the field assembly, adopt current material on the market, the component can be realized through simple processing, the course of working is simple, high efficiency, replace the concrete stair in original concrete structure into assembled steel structure stair, effectively alleviate the dead weight of structure, excellent in use effect.
3. The utility model relates to a novel reasonable, be provided with the sliding layer between the horizontal bottom plate of L shape bedplate and the steel built-in fitting, be provided with the buffer layer between the upper portion lateral wall of vertical curb plate and the concrete structure roof beam orientation stairwell of L shape bedplate, the connecting rod that the steel built-in fitting stretches out the concrete structure bracket passes the rectangular hole on the L shape bedplate, under earthquake effort, steel stair overall structure slidable, the atress is clear and definite, reasonable, do benefit to the antidetonation, when entering the actual engineering, only consider the stair load when establishing the calculation model of main part, do not establish the stair model, under the horizontal loading effect, do not consider the rigidity of stair in the calculation model, consequently adopt the gliding steel stair in both ends, more accord with building structure calculation model, convenient to popularize and use.
To sum up, the utility model relates to a novelty is reasonable, differentiates the large-scale component of stair into simple structure's little component, adopts the mill prefabrication, assembles it into steel stair at the job site, is used for concrete major structure with steel stair, and sliding support is adopted at both ends, accords with the assumption of not considering stair rigidity in the structural model calculates, does benefit to antidetonation, convenient to popularize and use.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of the mounting plate of fig. 1 with the pedestal removed.
Fig. 3 is the structural schematic diagram of the L-shaped steel ladder beam of the present invention.
Fig. 4 is a top view of fig. 3.
Description of reference numerals:
1-low-rise concrete structural beam; 2-low-rise concrete structure corbels;
3, low-layer steel embedded parts; 4-a low-position sliding layer of the steel stair;
5-a low-level L-shaped support plate; 6-fixing plate of low-level support;
7-a low-position slippage buffer layer of the steel stair; 8-high-rise concrete structure beam;
9-high-rise concrete structure bracket; 10-high-rise steel embedded parts;
11-high sliding layer of steel stair; 12-high-rise L-shaped support plate;
13-high-rise support fixing plate; 14-a steel stair high-position slippage buffer layer;
15-L-shaped steel ladder beam side plates; 16-L-shaped steel ladder beam flange plates;
17-L-shaped steel step ear plates; 18-flat steel step ear plate;
19-L-shaped steel step; 20-flat steel step;
21-a long hole; 22-steel step mounting hole.
Detailed Description
As shown in fig. 1 to 4, the utility model comprises two L-shaped steel ladder beams and M steel steps which are sequentially assembled and installed between two adjacent concrete structure beams above and below the concrete main structure stairwell, wherein M is a positive integer not less than 2;
the concrete structure beam positioned at the lower layer in the two layers of concrete structure beams adjacent to the upper layer and the lower layer is a low-layer concrete structure beam 1, and the concrete structure beam positioned at the high layer in the two layers of concrete structure beams adjacent to the upper layer and the lower layer is a high-layer concrete structure beam 8;
a lower concrete structure bracket 2 is constructed on the lower part of the lower concrete structure beam 1 facing the staircase, a lower steel embedded part 3 is embedded in the lower concrete structure bracket 2, a lower L-shaped support plate 5 is connected with the lower steel embedded part 3 through a lower support fixing plate 6, a steel staircase low-position sliding layer 4 is arranged between the horizontal bottom plate of the lower L-shaped support plate 5 and the lower steel embedded part 3, a steel staircase low-position sliding buffer layer 7 is arranged between the vertical side plate of the lower L-shaped support plate 5 and the upper outer side wall of the lower concrete structure beam 1 facing the staircase, and the low-position bottom of the L-shaped steel staircase beam is connected with the upper surface of the horizontal bottom plate of the lower L-shaped support plate 5 into a whole;
a high-rise concrete structure bracket 9 is constructed on the outer side of the lower part of the high-rise concrete structure beam 8 facing the stairwell, a high-rise steel embedded part 10 is embedded in the high-rise concrete structure bracket 9, a high-rise L-shaped support plate 12 is connected with the high-rise steel embedded part 10 through a high-rise support fixing plate 13, a steel stair high-position sliding layer 11 is arranged between the horizontal bottom plate of the high-rise L-shaped support plate 12 and the high-rise steel embedded part 10, a steel stair high-position sliding buffer layer 14 is arranged between the vertical side plate of the high-rise L-shaped support plate 12 and the outer side wall of the upper part of the high-rise concrete structure beam 8 facing the stairwell, and the high-position bottom of the L-shaped steel ladder beam is connected with the upper surface of the horizontal bottom plate of the high-rise L-shaped support plate 12 into a whole;
It should be noted that, by constructing a low-layer concrete structure bracket 2 with a built-in low-layer steel embedded part 3 on the outer side of the lower part of the low-layer concrete structure beam 1 facing the stairwell and a high-layer concrete structure bracket 9 with a built-in high-layer steel embedded part 10 on the outer side of the lower part of the high-layer concrete structure beam 8 facing the stairwell, a mounting and fixing foundation is provided for two oppositely mounted L-shaped steel ladder beams, so that the steel stairwell is conveniently used for the concrete structure, the high-layer and low-layer L-shaped support plates are respectively connected with the high-layer and low-layer steel embedded parts through high-layer and low-layer support fixing plates, the low-position bottom of the L-shaped steel ladder beams is connected with the upper surface of the horizontal bottom plate of the low-layer L-shaped support plate 5 into a whole, the high-position bottom of the L-shaped steel ladder beams is connected with the upper surface of the horizontal bottom plate of the high-layer L-shaped support plate 12 into a whole, no formwork is needed on site, the formwork material can be reduced, the labor investment and the construction cost can be reduced, the method meets the requirements of green buildings, can reduce pollution and save resources; the large components of the stair are differentiated into small components with simple structures by sequentially installing the M steel steps between the two L-shaped steel ladder beams in an assembling mode, the small components are prefabricated in a factory and assembled into the steel stair on a construction site, the steel stair can be used for the assembling type structure and accords with the direction of the current building development, all the components can be prefabricated in the factory and assembled on the site, the existing materials and components in the market can be adopted and are simply processed, the processing process is simple and efficient, the concrete stair in the original concrete structure is replaced by the assembling type steel structure stair, and the dead weight of the structure is effectively reduced; a sliding layer is arranged between a horizontal bottom plate of the L-shaped support plate and the steel embedded part, a buffer layer is arranged between a vertical side plate of the L-shaped support plate and the outer side wall of the upper portion of the concrete structure beam facing the staircase, a connecting rod of the steel embedded part extending out of a bracket of the concrete structure penetrates through a strip hole 21 in the L-shaped support plate, under the action of earthquake force, the whole structure of the steel staircase can slide, the stress is clear and reasonable, and the earthquake resistance is facilitated.
In actual implementation, the low-rise steel embedded part 3 and the high-rise steel embedded part 10 are identical in structural size and respectively comprise a steel plate, a connecting rod extending out of a bracket of a concrete structure and a plurality of anchoring rods anchored in the bracket of the concrete structure, the steel stair low-position sliding layer 4 is arranged between a horizontal bottom plate of the low-rise L-shaped support plate 5 and a steel plate of the low-rise steel embedded part 3, and the steel stair high-position sliding layer 11 is arranged between a horizontal bottom plate of the high-rise L-shaped support plate 12 and a steel plate of the high-rise steel embedded part 10.
In this embodiment, the low-rise concrete structure beam 1 and the low-rise concrete structure corbel 2 are integrally constructed, and the high-rise concrete structure beam 8 and the high-rise concrete structure corbel 9 are integrally constructed.
In the initial stage of the concrete main structure construction, a staircase concrete structure beam structure is designed, a low-rise concrete structure beam 1 and a low-rise concrete structure bracket 2 are integrally constructed, a high-rise concrete structure beam 8 and a high-rise concrete structure bracket 9 are integrally constructed, and a mounting and fixing foundation is provided for two oppositely mounted L-shaped steel ladder beams.
In this embodiment, the lower bottom of the L-shaped ladder beam is connected to the end of the upper surface of the horizontal base plate of the L-shaped support plate 5, and the upper bottom of the L-shaped ladder beam is connected to the end of the upper surface of the horizontal base plate of the L-shaped support plate 12.
In this embodiment, the L-shaped steel ladder beam includes L-shaped steel ladder beam curb plate 15 and L-shaped steel ladder beam flange plate 16, and L-shaped steel ladder beam flange plate 16 is including the high level horizontal flange plate, middle part slope flange plate and the low level L shape flange plate that connect gradually, high level horizontal flange plate and the horizontal bottom plate upper surface welding of high-rise L shape bedplate 12, the horizontal flange plate of bottom of low level L shape flange plate and the horizontal bottom plate upper surface welding of low level L shape bedplate 5.
In this embodiment, the L-shaped steel ladder beam side plate 15 is provided with M steel step ear plates along the length direction, and the steel step ear plates are provided with steel step mounting holes 22.
In this embodiment, the M steel step ear plates include a flat steel step ear plate 18 and M-1L-shaped steel step ear plates 17, the M steel steps include a flat steel step 20 and M-1L-shaped steel steps 19, the flat steel step 20 is installed on the flat steel step ear plate 18, and the L-shaped steel steps 19 are installed on the L-shaped steel step ear plates 17.
It should be noted that each L-shaped steel ladder beam side plate 15 is provided with M steel stepping ear plates along the length direction, two L-shaped steel ladder beam side plates 15 are arranged between two adjacent layers of concrete structure beams, that is, 2M steel stepping ear plates are arranged on two L-shaped steel ladder beam side plates 15 between two adjacent layers of concrete structure beams, wherein the 2M steel stepping ear plates include two flat steel stepping ear plates 18 and 2M-2L steel stepping ear plates 17, each two steel stepping ear plates are provided with one steel stepping, one flat steel stepping 20 is assembled on each two flat steel stepping ear plates 18, and one L-shaped steel stepping 19 is assembled on each two L steel stepping ear plates 17.
In actual assembly, the first steel step or the last steel step in the steel steps from bottom to top between two adjacent layers of concrete structure beams is a flat steel step 20, the rest steel steps in the steel steps from bottom to top between two adjacent layers of concrete structure beams are L-shaped steel steps 19, and when the first steel step in the steel steps from bottom to top between two adjacent layers of concrete structure beams is a flat steel step 20, the rest L-shaped steel steps 19 in the steel steps from bottom to top between two adjacent layers of concrete structure beams are inversely installed; when the last steel step in the steel stair between the two adjacent layers of concrete structure beams from bottom to top is a flat steel step 20, the rest L-shaped steel steps 19 in the steel stair between the two adjacent layers of concrete structure beams from bottom to top are installed in the forward direction.
In this embodiment, the flat steel steps 20 are connected to the flat steel step lugs 18 through high-strength bolts, and the L-shaped steel steps 19 are connected to the L-shaped steel step lugs 17 through high-strength bolts.
In this embodiment, the steel stair low-position sliding layer 4 and the steel stair high-position sliding layer 11 are graphite powder sliding layers.
In this embodiment, the steel stair low-position slip buffer layer 7 and the steel stair high-position slip buffer layer 14 are both polystyrene board buffer layers.
The utility model discloses differentiate the large-scale component of stair into simple structure's little component, adopt the mill prefabrication, assemble it into steel stair at the job site, be used for concrete major structure with steel stair, sliding support is adopted at both ends, accords with the assumption of not considering stair rigidity in the structural model calculation, does benefit to the antidetonation.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (9)
1. The utility model provides a concrete major structure is with assembled sliding steel stair which characterized in that: the concrete main structure stairwell comprises two L-shaped steel ladder beams and M steel steps, wherein the two L-shaped steel ladder beams are oppositely arranged between two layers of concrete structure beams which are adjacent up and down in the concrete main structure stairwell, and the M steel steps are sequentially arranged between the two L-shaped steel ladder beams in an assembling mode, wherein M is a positive integer not less than 2;
the concrete structure beam positioned at the lower layer in the two layers of concrete structure beams adjacent to the upper layer and the lower layer is a low-layer concrete structure beam (1), and the concrete structure beam positioned at the high layer in the two layers of concrete structure beams adjacent to the upper layer and the lower layer is a high-layer concrete structure beam (8);
a lower concrete structure bracket (2) is constructed on the lower outer side of a low-layer concrete structure beam (1) facing a staircase, a low-layer steel embedded part (3) is embedded in the low-layer concrete structure bracket (2), a low-layer L-shaped support plate (5) is connected with the low-layer steel embedded part (3) through a low-layer support fixing plate (6), a steel staircase low-position sliding layer (4) is arranged between a horizontal bottom plate of the low-layer L-shaped support plate (5) and the low-layer steel embedded part (3), a steel staircase low-position sliding buffer layer (7) is arranged between a vertical side plate of the low-layer L-shaped support plate (5) and the upper side wall of the lower concrete structure beam (1) facing the upper part of the staircase, and the low-position bottom of the L-shaped steel staircase beam is connected with the upper surface of the horizontal bottom plate of the low-layer L-shaped support plate (5) into a whole;
a high-rise concrete structure bracket (9) is constructed on the outer side of the lower part of a high-rise concrete structure beam (8) facing a staircase room, a high-rise steel embedded part (10) is embedded in the high-rise concrete structure bracket (9), a high-rise L-shaped support plate (12) is connected with the high-rise steel embedded part (10) through a high-rise support fixing plate (13), a steel staircase high-position sliding layer (11) is arranged between the horizontal bottom plate of the high-rise L-shaped support plate (12) and the high-rise steel embedded part (10), a steel staircase high-position sliding buffer layer (14) is arranged between the vertical side plate of the high-rise L-shaped support plate (12) and the outer side wall of the upper part of the high-rise concrete structure beam (8) facing the staircase room, and the high-position bottom of the L-shaped steel staircase beam is connected with the upper surface of the horizontal bottom plate of the high-rise L-shaped support plate (12) into a whole;
rectangular hole (21) have all been seted up at the horizontal bottom plate middle part of low level L shape bedplate (5) and high-rise L shape bedplate (12), and the connecting rod that low level steel built-in fitting (3) stretched out low level concrete structure bracket (2) passes rectangular hole (21) on low level L shape bedplate (5), and connecting rod that high-rise steel built-in fitting (10) stretched out high-rise concrete structure bracket (9) passes rectangular hole (21) on high-rise L shape bedplate (12).
2. The fabricated sliding steel staircase for concrete main body structures according to claim 1, characterized in that: the low-rise concrete structure beam (1) and the low-rise concrete structure bracket (2) are integrally constructed, and the high-rise concrete structure beam (8) and the high-rise concrete structure bracket (9) are integrally constructed.
3. The fabricated sliding steel staircase for concrete main body structures according to claim 1, characterized in that: the lower bottom of the L-shaped steel ladder beam is connected to the upper surface end of the horizontal bottom plate of the low-layer L-shaped support plate (5), and the upper bottom of the L-shaped steel ladder beam is connected to the upper surface end of the horizontal bottom plate of the high-layer L-shaped support plate (12).
4. The fabricated sliding steel staircase for concrete main body structures according to claim 1, characterized in that: l shape steel ladder beam includes L shape steel ladder beam curb plate (15) and L shape steel ladder beam flange board (16), and L shape steel ladder beam flange board (16) are including the high-order horizontal flange board, middle part slope flange board and the low level L shape flange board that connect gradually, the horizontal bottom plate upper surface welding of high-order horizontal flange board and high-rise L shape bedplate (12), the horizontal flange board in bottom of low level L shape flange board and the horizontal bottom plate upper surface welding of low-rise L shape bedplate (5).
5. A concrete is fabricated sliding steel stair for major structure according to claim 4, characterized in that: l shape steel ladder beam curb plate (15) are provided with M steel otic placode of marking time along length direction, steel mounting hole (22) of marking time has been seted up on the steel otic placode of marking time.
6. A concrete is fabricated sliding steel stair for major structure according to claim 5, characterized in that: the M steel stepping ear plates comprise a flat steel stepping ear plate (18) and M-1L-shaped steel stepping ear plates (17), the M steel stepping comprises a flat steel stepping (20) and M-1L-shaped steel stepping (19), the flat steel stepping (20) is installed on the flat steel stepping ear plate (18), and the L-shaped steel stepping (19) is installed on the L-shaped steel stepping ear plates (17).
7. An assembled sliding steel stair for concrete body structures according to claim 6, characterized in that: the flat steel steps (20) are connected with the flat steel step ear plates (18) through high-strength bolts, and the L-shaped steel steps (19) are connected with the L-shaped steel step ear plates (17) through high-strength bolts.
8. The fabricated sliding steel staircase for concrete main body structures according to claim 1, characterized in that: the steel stair low-position sliding layer (4) and the steel stair high-position sliding layer (11) are graphite powder sliding layers.
9. The fabricated sliding steel staircase for concrete main body structures according to claim 1, characterized in that: the steel stair low-position slippage buffer layer (7) and the steel stair high-position slippage buffer layer (14) are polystyrene board buffer layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120738844.1U CN214834198U (en) | 2021-04-12 | 2021-04-12 | Assembled sliding steel stair for concrete main body structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120738844.1U CN214834198U (en) | 2021-04-12 | 2021-04-12 | Assembled sliding steel stair for concrete main body structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214834198U true CN214834198U (en) | 2021-11-23 |
Family
ID=78763317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120738844.1U Active CN214834198U (en) | 2021-04-12 | 2021-04-12 | Assembled sliding steel stair for concrete main body structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214834198U (en) |
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2021
- 2021-04-12 CN CN202120738844.1U patent/CN214834198U/en active Active
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