CN214834199U - Assembled steel stair for concrete main body structure - Google Patents
Assembled steel stair for concrete main body structure Download PDFInfo
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- CN214834199U CN214834199U CN202120738845.6U CN202120738845U CN214834199U CN 214834199 U CN214834199 U CN 214834199U CN 202120738845 U CN202120738845 U CN 202120738845U CN 214834199 U CN214834199 U CN 214834199U
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Abstract
The utility model discloses an assembled steel stair for concrete main body structure, install the steel of installing between two L shape steel ladder beams in proper order including two L shape steel ladder beams and M that install relatively between the adjacent two-layer concrete structure roof beam about the concrete main body structure stairwell and mark time, the concrete structure bracket of built-in steel built-in fitting has been built in the concrete structure lower part outside, and L shape bedplate passes through the support fixed plate and is connected with the steel built-in fitting, and L shape steel ladder 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, replace the concrete stair in original concrete structure into assembled steel structure stair, effectively alleviate the dead weight of structure, be used for concrete major structure with steel stair, accord with the direction of building development at present.
Description
Technical Field
The utility model belongs to the technical field of concrete major structure construction steel stair, concretely relates to assembled 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, 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 steel stair for major structure, its novel in design is reasonable, differentiate into simple structure's little component with stair large-scale component, adopt the mill prefabrication, assemble it into steel stair at the job site, replace the concrete stair in original concrete structure into assembled steel structure stair, effectively alleviate the dead weight of structure, be used for steel stair concrete major structure, accord with the direction of building development at present, 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 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, and the lower bottom of the L-shaped steel ladder beam is connected with the upper surface of a horizontal bottom plate of the lower L-shaped support plate into a whole;
a high-rise concrete structure corbel is constructed on the outer side of the lower portion, facing the stairwell, of the high-rise concrete structure beam, a high-rise steel embedded part is embedded in the high-rise concrete structure corbel, a high-rise L-shaped support plate is connected with the high-rise steel embedded part through a high-rise support fixing plate, and the high-position bottom of the L-shaped steel ladder beam is connected with the upper surface of a horizontal bottom plate of the high-rise L-shaped support plate into a whole.
Foretell assembled 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 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 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 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 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 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.
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.
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, replaces the concrete stair in original concrete structure into assembled steel structure stair, effectively alleviates the dead weight of structure, is used for concrete major structure with steel stair, accords with the direction of present building development, 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; 5-a low-level L-shaped support plate;
6-fixing plate of low-level support; 8-high-rise concrete structure beam;
9-high-rise concrete structure bracket; 10-high-rise steel embedded parts;
12-high-rise L-shaped support plate; 13-high-rise support fixing plate;
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;
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 outer side of the lower part of the lower concrete structure beam 1 facing the stairwell, 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, and the lower bottom of the L-shaped steel ladder beam is connected with the upper surface of a 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 portion, facing the staircase, of the high-rise concrete structure beam 8, 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, and the high-position bottom of the L-shaped steel ladder beam is connected with the upper surface of a 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; through the prefabricated installation M steel in proper order between two L shape steel ladder beams is marked time, differentiate into simple structure's little component with the large-scale component of stair, adopt the mill prefabrication, assemble into steel stair with it 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 at the mill, the field erection, 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 lighten the dead weight of structure.
In actual implementation, the structural dimensions of the low-layer steel embedded part 3 and the high-layer steel embedded part 10 are the same, the low-layer steel embedded part 3 and the high-layer steel embedded part 10 both comprise a steel plate, a connecting rod extending out of a bracket of a concrete structure and an anchoring body anchored in the bracket of the concrete structure, the connecting rod extending out of the low-layer steel embedded part 3 and the bracket 2 of the low-layer concrete structure penetrates through the middle of a horizontal bottom plate of the low-layer L-shaped support plate 5 and the fixed plate 6 of the low-layer support, the low-layer L-shaped support plate 5 and the low-layer steel embedded part 3 are fixed into a whole through a locking part, the connecting rod extending out of the bracket 9 of the high-layer steel embedded part 10 penetrates through the middle of the horizontal bottom plate of the high-layer L-shaped support plate 12 and the fixed plate 13 of the high-layer support, and the high-layer L-layer steel embedded part 10 is fixed into a whole through a locking part.
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.
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, replace the concrete stair in original concrete structure into assembled steel structure stair, effectively alleviate the dead weight of structure, be used for concrete major structure with steel stair, accord with the direction of building development at present.
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 (7)
1. The utility model provides a concrete major structure is with assembled 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 portion of the lower concrete structure beam (1) facing the stairwell, 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), and the low-position bottom of the L-shaped steel ladder beam is connected with the upper surface of a 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 portion, facing the staircase, of the high-rise concrete structure beam (8), 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), and the high-position bottom of the L-shaped steel ladder beam is connected with the upper surface of a horizontal bottom plate of the high-rise L-shaped support plate (12) into a whole.
2. An assembled steel stair 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. An assembled steel stair 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. An assembled steel stair 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. An assembled steel stair for concrete main body structures according to claim 4, wherein: 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. An assembled steel stair for concrete body structures 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 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120738845.6U CN214834199U (en) | 2021-04-12 | 2021-04-12 | Assembled steel stair for concrete main body structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120738845.6U CN214834199U (en) | 2021-04-12 | 2021-04-12 | Assembled steel stair for concrete main body structure |
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| Publication Number | Publication Date |
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| CN214834199U true CN214834199U (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120738845.6U Active CN214834199U (en) | 2021-04-12 | 2021-04-12 | Assembled steel stair for concrete main body structure |
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| CN (1) | CN214834199U (en) |
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2021
- 2021-04-12 CN CN202120738845.6U patent/CN214834199U/en active Active
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