Double-sided three-way assembled stairway

Abstract

The utility model provides a double-sided three-way assembled stair, relates to the technical field of buildings, and solves the technical problem that a structure of a prefabricated three-way stair is lacked in the prior art. The device comprises stand columns, an upper beam body, a lower beam body, an inner beam body, a first stair unit, a second stair unit and a third stair unit, the number of the stand columns is two, the two ends of the upper beam body are connected with the two stand columns respectively, the two ends of the lower beam body are connected with the two stand columns respectively, the upper beam body is located above the lower beam body, and the inner beam body is located above the lower beam body. The upper end of the first stair unit is connected with the lower beam body, the upper end of the first stair unit is connected with the lower end of the second stair unit, the upper end of the second stair unit is connected with the lower end of the third stair unit, the lower end of the third stair unit is connected with the upper beam body, and the upper end of the third stair unit is connected with one end of the inner beam body. And the other end of the inner beam body is connected with the lower end of the first stair unit of the upper floor.

Description

Technical Field

[0001] This utility model relates to the field of building technology, and in particular to a double-sided, three-flight prefabricated staircase. Background Technology

[0002] Staircases, located between different floors, serve to connect the upper and lower levels, and are a crucial component in multi-story buildings for facilitating movement up and down stairs. Precast staircase components, as an important part of prefabricated residential building systems, play an indispensable role in the entire prefabricated residential building market and even the prefabricated building industry as a whole. Currently, the precast staircase components used in the prefabricated residential building market are mainly precast double-flight staircases. However, existing technology lacks precast three-flight staircase structures. Utility Model Content

[0003] The purpose of this invention is to provide a double-sided, three-flight prefabricated staircase to solve the technical problem of the lack of prefabricated three-flight staircase structures in the existing technology. 。 The various technical effects of the preferred technical solutions among the many technical solutions provided by this utility model are described in detail below.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This utility model provides a double-sided, three-flight prefabricated staircase for connecting two adjacent floors. It includes columns, an upper beam, a lower beam, an inner beam, a first staircase unit, a second staircase unit, and a third staircase unit. There are two columns. Both ends of the upper beam are connected to the two columns, and both ends of the lower beam are connected to the two columns. The upper beam is located above the lower beam. The upper end of the first staircase unit is connected to the lower beam, and the upper end of the first staircase unit is connected to the lower end of the second staircase unit. The upper end of the second staircase unit is connected to the lower end of the third staircase unit, and the lower end of the third staircase unit is connected to the upper beam. The upper end of the third staircase unit is connected to one end of the inner beam, and the other end of the inner beam is connected to the lower end of the first staircase unit on the next floor.

[0006] Optionally, the first stair unit includes a first precast stair concrete body and a first platform. The upper end of the first precast stair concrete body is fixedly connected to the rear end of the first platform. The first platform is pre-embedded with a first U-shaped connecting steel bar and a first positioning steel bar. There are multiple first U-shaped connecting steel bars, and the bottom of all the first U-shaped connecting steel bars extends out of the front end face of the first platform. The two ends of the first positioning steel bar extend out of the top end face of the first platform, and the first positioning steel bar is close to the side end face of the first platform.

[0007] The first platform has a first positioning hole at its front end, and the first precast staircase concrete body has a second positioning hole on its lowest step.

[0008] Optionally, a third positioning hole and a clearance groove are provided on the lowest step of the second stair unit, and a fourth positioning hole is provided on the highest step of the second stair unit.

[0009] Optionally, the third stair unit includes a second precast concrete staircase, a second platform, and an L-shaped support. The lower end of the second precast concrete staircase is fixedly connected to the rear end of the second platform, and the side end of the second platform is fixedly connected to the top end of the L-shaped support. A second U-shaped connecting steel bar is pre-embedded in the second platform. There are multiple second U-shaped connecting steel bars, and the bottom of all the second U-shaped connecting steel bars extends out of the front end face of the second platform. A second positioning steel bar is pre-embedded in the lower part of the L-shaped support. The two ends of the second positioning steel bar extend out of the upper end face of the lower part of the L-shaped support.

[0010] The second platform has a fifth positioning hole at its front end, and the second precast staircase concrete body has a sixth positioning hole on its uppermost step.

[0011] Optionally, the first stair unit and / or the third stair unit are equipped with inclined triangular steps.

[0012] Optionally, both the upper beam and the lower beam include a first precast concrete beam, a large beam head connector, and a small beam head connector. A portion of each of the large beam head connector and the small beam head connector is pre-embedded at both ends of the first precast concrete beam. A receiving platform is provided on the first precast concrete beam near the end of the small beam head connector. A third positioning steel bar is pre-embedded on the receiving platform, and the end of the third positioning steel bar extends out of the upper surface of the receiving platform.

[0013] The first precast beam has pre-embedded beam opening stirrups, closed-loop stirrups, and tapped threaded steel bars in its concrete body.

[0014] Optionally, the column is pre-embedded with a small column edge connector, a large column edge connector, a straight threaded sleeve, and a column pre-embedded reinforcing bar. The small column edge connector is connected to the small beam head connector by bolts, the large column edge connector is connected to the large beam head connector by bolts, and the column pre-embedded reinforcing bar is threadedly connected to the tapped threaded reinforcing bar through the straight threaded sleeve.

[0015] Optionally, the inner beam body includes a second precast concrete beam body, a first beam platform, a second beam platform and a first beam head connector. A first beam head connector is pre-embedded at both ends of the second precast concrete beam body. The first beam platform and the second beam platform are both fixed to the front end face of the second precast concrete beam body.

[0016] A fourth positioning steel bar is pre-embedded on the first beam platform, and the end of the fourth positioning steel bar extends out of the upper end face of the first beam platform;

[0017] A fifth positioning steel bar is pre-embedded on the second beam platform, and the end of the fifth positioning steel bar extends out of the upper surface of the second beam platform.

[0018] Optionally, the first stair unit, the second stair unit, and the third stair unit together form a three-flight staircase body, with two such three-flight staircase bodies located on the same floor, and the two such three-flight staircase bodies are arranged symmetrically.

[0019] This utility model provides a double-sided, three-flight prefabricated staircase for connecting two adjacent floors. At each floor, an upper beam and a lower beam are respectively arranged vertically. A first, second, and third staircase unit are sequentially connected. The upper end of the first staircase unit connects to the lower beam, and the connection between the first staircase unit and the lower beam is made of poured concrete. The upper end of the first staircase unit connects to the lower end of the second staircase unit, and the upper end of the second staircase unit connects to the lower end of the third staircase unit. The lower end of the third staircase unit connects to the upper beam, and the connection between the third staircase unit and the upper beam is also made of poured concrete. The upper end of the third staircase unit connects to one end of an inner beam, and the other end of the inner beam connects to the lower end of the first staircase unit on the floor above. The inner beam can be connected to the floor's stairwell slab, thus forming a three-flight staircase structure. This solves the technical problem of the lack of prefabricated three-flight staircase structures in the prior art. 。 Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of the main body of the double-sided three-flight prefabricated staircase provided in this embodiment of the utility model;

[0022] Figure 2 This is a structural schematic diagram of the main body of a single-sided three-flight prefabricated staircase provided in this embodiment of the utility model;

[0023] Figure 3 This is a structural schematic diagram of the first stair unit of the double-sided three-flight prefabricated staircase provided in this embodiment of the utility model;

[0024] Figure 4 This is a structural schematic diagram of the second stair unit of the double-sided three-flight prefabricated staircase provided in this embodiment of the utility model;

[0025] Figure 5 This is a structural schematic diagram of the third stair unit of the double-sided three-flight prefabricated staircase provided in this embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the internal beam of the double-sided three-flight prefabricated staircase provided in this embodiment of the utility model;

[0027] Figure 7 This is a schematic diagram of the connection between the two columns, the upper beam, and the lower beam of the double-sided three-flight prefabricated staircase provided in this embodiment of the utility model.

[0028] Figure 8 This is a schematic diagram of the connection between a column, an upper beam, and a lower beam of a double-sided, three-flight prefabricated staircase provided in this embodiment of the utility model.

[0029] In the diagram: 1. Column; 11. Small column edge connector; 12. Large column edge connector; 13. Straight threaded sleeve; 14. Column embedded steel reinforcement.

[0030] 2. Upper beam body; 21. First precast beam concrete body; 211. Supporting platform; 2111. Third positioning reinforcement; 212. Beam opening stirrups; 213. Stirrup closed loop reinforcement; 214. Tapped threaded reinforcement; 22. Main beam end connector; 23. Small beam end connector;

[0031] 3. Lower beam;

[0032] 4. Inner beam body; 41. Second precast beam concrete body; 42. First beam platform; 421. Fourth positioning reinforcement; 43. Second beam platform; 431. Fifth positioning reinforcement; 44. First beam head connector;

[0033] 5. First staircase unit; 51. First precast staircase concrete body; 511. Second positioning hole; 52. First platform; 521. First U-shaped connecting steel bar; 522. First positioning steel bar; 523. First positioning hole;

[0034] 6. Second staircase unit; 61. Third positioning hole; 62. Clearance groove; 63. Fourth positioning hole;

[0035] 7. Third staircase unit; 71. Second precast staircase concrete body; 711. Sixth positioning hole; 72. Second platform; 721. Second U-shaped connecting steel bar; 722. Fifth positioning hole; 73. L-shaped support body; 731. Second positioning steel bar;

[0036] 8. Oblique triangular step. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] This utility model provides a double-sided, three-flight prefabricated staircase for connecting two adjacent floors. It includes columns 1, an upper beam 2, a lower beam 3, an inner beam 4, a first stair unit 5, a second stair unit 6, and a third stair unit 7. There are two columns 1. Both ends of the upper beam 2 are connected to the two columns 1 respectively. Both ends of the lower beam 3 are connected to the two columns 1 respectively. The upper beam 2 is located above the lower beam 3. The upper end of the first stair unit 5 is connected to the lower beam 3. The upper end of the first stair unit 5 is connected to the lower end of the second stair unit 6. The upper end of the second stair unit 6 is connected to the lower end of the third stair unit 7. The lower end of the third stair unit 7 is connected to the upper beam 2. The upper end of the third stair unit 7 is connected to one end of the inner beam 4. The other end of the inner beam 4 is connected to the lower end of the first stair unit 5 on the next floor. This utility model provides a double-sided, three-flight prefabricated staircase for connecting two adjacent floors. At each floor, an upper beam 2 and a lower beam 3 are respectively installed vertically. A first stair unit 5, a second stair unit 6, and a third stair unit 7 are sequentially connected. The upper end of the first stair unit 5 is connected to the lower beam 3, and the connection between the first stair unit 5 and the lower beam 3 is made of poured concrete. The upper end of the first stair unit 5 is connected to the lower end of the second stair unit 6, and the upper end of the second stair unit 6 is connected to the lower end of the third stair unit 7. The lower end of the third stair unit 7 is connected to the upper beam 2, and the connection between the third stair unit 7 and the upper beam 2 is made of poured concrete. The upper end of the third stair unit 7 is connected to one end of an inner beam 4, and the other end of the inner beam 4 is connected to the lower end of the first stair unit 5 on the floor above. The inner beam 4 can be connected to the floor's stair slab, thus forming a three-flight staircase structure. This solves the technical problem of the lack of prefabricated three-flight staircase structures in the prior art.

[0041] As an optional implementation, the first stair unit 5 includes a first precast concrete stair body 51 and a first platform 52. The upper end of the first precast concrete stair body 51 is fixedly connected to the rear end of the first platform 52. The first platform 52 has pre-embedded first U-shaped connecting steel bars 521 and first positioning steel bars 522. There are multiple first U-shaped connecting steel bars 521, and the bottom of all the first U-shaped connecting steel bars 521 extends out of the front end face of the first platform 52. The two ends of the first positioning steel bars 522 extend out of the top end face of the first platform 52, and the first positioning steel bars 522 are close to the side end face of the first platform 52. The front end of the first platform 52 is provided with There is a first positioning hole 523. The front end of the first platform 52 will be located on the end of the receiving platform 211 in the lower beam 3, and the third positioning steel bar 2111 will be inserted into the first positioning hole 523. The first U-shaped connecting steel bar 521 will be located in the middle of the receiving platform 211. Then concrete is poured. The bottom step of the first precast stair concrete body 51 is provided with a second positioning hole 511. The bottom step of the first precast stair concrete body 51 will be located on the first beam platform 42 of the inner beam body 4 of the next floor, and the fourth positioning steel bar 421 on the first beam platform 42 will be inserted into the second positioning hole 511.

[0042] As an optional implementation, the lowest step of the second stair unit 6 is provided with a third positioning hole 61 and a clearance groove 62. The lowest step of the second stair unit 6 is located on the side end of the first platform 52, and the first positioning steel bar 522 is inserted into the third positioning hole 61. The highest step of the second stair unit 6 is provided with a fourth positioning hole 63. The highest step of the second stair unit 6 is located on the upper end surface of the lower part of the L-shaped support body 73, and the second positioning steel bar 731 is inserted into the fourth positioning hole 63. The second stair unit 6 is inclined.

[0043] As an optional implementation, the third stair unit 7 includes a second precast stair concrete body 71, a second platform 72, and an L-shaped support body 73. The lower end of the second precast stair concrete body 71 is fixedly connected to the rear end of the second platform 72, and the side end of the second platform 72 is fixedly connected to the top end of the L-shaped support body 73. A second U-shaped connecting steel bar 721 is pre-embedded in the second platform 72. Multiple second U-shaped connecting steel bars 721 are present, and the bottom of all second U-shaped connecting steel bars 721 extends beyond the front end face of the second platform 72. A second positioning steel bar 731 is pre-embedded in the lower part of the L-shaped support body 73, and both ends of the second positioning steel bar 731 extend beyond the L-shaped support body 73. The upper end face of the lower part of the type support body 73; the front end of the second platform 72 is provided with a fifth positioning hole 722, the front end of the second platform 72 will be located on the end of the support platform 211 in the upper beam body 2, the third positioning steel bar 2111 will be inserted into the fifth positioning hole 722, the second U-shaped connecting steel bar 721 will be located in the middle of the support platform 211, and then concrete will be poured. The uppermost step of the second precast stair concrete body 71 is provided with a sixth positioning hole 711, the uppermost step of the second precast stair concrete body 71 will be located on the second beam platform 43, and the fifth positioning steel bar 431 will be inserted into the sixth positioning hole 711.

[0044] As an optional implementation, inclined triangular steps 8 are installed on the first stair unit 5 and / or the third stair unit 7. Inclined triangular steps 8 are installed on the first platform 52 and / or the second platform 72.

[0045] As an optional implementation, both the upper beam 2 and the lower beam 3 include a first precast concrete beam 21, a large beam head connector 22, and a small beam head connector 23. Parts of the large beam head connector 22 and the small beam head connector 23 are respectively embedded at both ends of the first precast concrete beam 21. A receiving platform 211 is provided on the first precast concrete beam 21 near the small beam head connector 23. A third positioning steel bar 2111 is embedded on the receiving platform 211, and the end of the third positioning steel bar 2111 extends out of the upper end face of the receiving platform 211. The upper beam 2 and the lower beam 3 are in opposite directions, that is, when the receiving platform 211 in the upper beam 2 is located on the left side, the receiving platform 211 in the lower beam 3 is located on the right side.

[0046] The first precast beam concrete body 21 is pre-embedded with beam opening stirrups 212, stirrup closed loop bars 213 and tapping threaded bars 214. There are multiple beam opening stirrups 212 and stirrup closed loop bars 213, which are used to fix the tapping threaded bars 214.

[0047] As an optional implementation, the column 1 is pre-embedded with a small column side connector 11, a large column side connector 12, a straight threaded sleeve 13, and a column pre-embedded steel bar 14. The small column side connector 11 is connected to the small beam head connector 23 by bolts, the large column side connector 12 is connected to the large beam head connector 22 by bolts, and the column pre-embedded steel bar 14 is threadedly connected to the tapped threaded steel bar 214 by the straight threaded sleeve 13.

[0048] As an optional implementation, the inner beam 4 includes a second precast concrete beam 41, a first beam platform 42, a second beam platform 43, and a first beam head connector 44. A first beam head connector 44 is pre-embedded at both ends of the second precast concrete beam 41. The first beam platform 42 and the second beam platform 43 are both fixed to the front end face of the second precast concrete beam 41. The first beam platform 42 is located above the second beam platform 43. The first beam platform 42 is located at the upper corner of the second precast concrete beam 41, and the second beam platform 43 is located at the lower corner of the second precast concrete beam 41.

[0049] A fourth positioning steel bar 421 is pre-embedded on the first beam platform 42, with its end extending beyond the upper surface of the first beam platform 42; a fifth positioning steel bar 431 is pre-embedded on the second beam platform 43, with its end extending beyond the upper surface of the second beam platform 43. After the positioning steel bars are inserted into the positioning holes, they can be connected by pouring concrete.

[0050] As an optional implementation, the first stair unit 5, the second stair unit 6, and the third stair unit 7 form a three-flight staircase body, including two three-flight staircase bodies on the same floor. The two three-flight staircase bodies are symmetrically arranged to form a double-sided staircase.

[0051] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A double-sided, three-flight prefabricated staircase for connecting two adjacent floors, characterized in that, It includes columns (1), upper beams (2), lower beams (3), inner beams (4), a first staircase unit (5), a second staircase unit (6), and a third staircase unit (7), among which, There are two columns (1). The two ends of the upper beam (2) are connected to the two columns (1) respectively. The two ends of the lower beam (3) are connected to the two columns (1) respectively. The upper beam (2) is located above the lower beam (3). The upper end of the first stair unit (5) is connected to the lower beam (3). The upper end of the first stair unit (5) is connected to the lower end of the second stair unit (6). The upper end of the second stair unit (6) is connected to the lower end of the third stair unit (7). The lower end of the third stair unit (7) is connected to the upper beam (2). The upper end of the third stair unit (7) is connected to one end of the inner beam (4). The other end of the inner beam (4) is connected to the lower end of the first stair unit (5) on the next floor.

2. The double-sided three-flight prefabricated staircase according to claim 1, characterized in that, The first stair unit (5) includes a first precast stair concrete body (51) and a first platform (52). The upper end of the first precast stair concrete body (51) is fixedly connected to the rear end of the first platform (52). The first platform (52) is pre-embedded with a first U-shaped connecting steel bar (521) and a first positioning steel bar (522). There are multiple first U-shaped connecting steel bars (521), and the bottom of all the first U-shaped connecting steel bars (521) extends out of the front end face of the first platform (52). The two ends of the first positioning steel bar (522) extend out of the top end face of the first platform (52), and the first positioning steel bar (522) is close to the side end face of the first platform (52). The first platform (52) has a first positioning hole (523) at its front end, and the first precast staircase concrete body (51) has a second positioning hole (511) on the lowest step.

3. The double-sided three-flight prefabricated staircase according to claim 1, characterized in that, The second stair unit (6) has a third positioning hole (61) and a clearance groove (62) on the bottom step, and a fourth positioning hole (63) on the top step.

4. The double-sided three-flight prefabricated staircase according to claim 1, characterized in that, The third stair unit (7) includes a second precast stair concrete body (71), a second platform (72), and an L-shaped support body (73). The lower end of the second precast stair concrete body (71) is fixedly connected to the rear end of the second platform (72), and the side end of the second platform (72) is fixedly connected to the top end of the L-shaped support body (73). A second U-shaped connecting steel bar (721) is pre-embedded in the second platform (72). There are multiple second U-shaped connecting steel bars (721), and the bottom of all the second U-shaped connecting steel bars (721) extends out of the front end face of the second platform (72). A second positioning steel bar (731) is pre-embedded in the lower part of the L-shaped support body (73), and the two ends of the second positioning steel bar (731) extend out of the upper end face of the lower part of the L-shaped support body (73). The second platform (72) has a fifth positioning hole (722) at its front end, and the second precast staircase concrete body (71) has a sixth positioning hole (711) on its uppermost step.

5. The double-sided three-flight prefabricated staircase according to claim 1, characterized in that, The first stair unit (5) and / or the third stair unit (7) are equipped with inclined triangular steps (8).

6. The double-sided three-flight prefabricated staircase according to claim 1, characterized in that, Both the upper beam (2) and the lower beam (3) include a first precast concrete beam (21), a large beam head connector (22), and a small beam head connector (23). Parts of the large beam head connector (22) and the small beam head connector (23) are respectively embedded at both ends of the first precast concrete beam (21). A receiving platform (211) is provided on the first precast concrete beam (21) near the small beam head connector (23). A third positioning steel bar (2111) is embedded on the receiving platform (211), and the end of the third positioning steel bar (2111) extends out of the upper surface of the receiving platform (211). The first precast beam concrete body (21) is pre-embedded with beam opening stirrups (212), stirrup closed loop bars (213) and tapped threaded bars (214).

7. The double-sided three-flight prefabricated staircase according to claim 6, characterized in that, The column (1) is pre-embedded with a small column side connector (11), a large column side connector (12), a straight threaded sleeve (13), and a column pre-embedded steel bar (14). The small column side connector (11) is connected to the small beam head connector (23) by bolts. The large column side connector (12) is connected to the large beam head connector (22) by bolts. The column pre-embedded steel bar (14) is threadedly connected to the tapped threaded steel bar (214) through the straight threaded sleeve (13).

8. The double-sided three-flight prefabricated staircase according to claim 1, characterized in that, The inner beam body (4) includes a second precast concrete beam body (41), a first beam platform (42), a second beam platform (43), and a first beam head connector (44). A first beam head connector (44) is pre-embedded at both ends of the second precast concrete beam body (41). The first beam platform (42) and the second beam platform (43) are both fixed to the front end face of the second precast concrete beam body (41). The first beam platform (42) is pre-embedded with a fourth positioning steel bar (421), the end of which extends out of the upper end face of the first beam platform (42); The second beam platform (43) is pre-embedded with a fifth positioning steel bar (431), the end of which extends out of the upper end face of the second beam platform (43).

9. The double-sided three-flight prefabricated staircase according to claim 1, characterized in that, The first stair unit (5), the second stair unit (6) and the third stair unit (7) form a three-flight staircase body, and two of the three-flight staircase bodies are included in the same floor, and the two three-flight staircase bodies are symmetrically arranged.

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