Fabricated stair structure
By independently setting up the connection structure in the prefabricated stair structure, using embedded iron boxes, connecting rods and structural glue, the problem of insufficient stability of stair connection in the existing technology is solved, and the stable connection between the stairs and buildings is achieved.
Patent Information
- Application Number
- CN202420124007.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-18
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-18
AI Technical Summary
When the existing prefabricated stair structure ensures the strength of the stairs and the connection strength, the two structures are integrated and affect each other, resulting in insufficient connection stability.
By setting up embedded iron boxes, first connecting rods, second connecting rods and preset holes at the ends of the lower and upper stairs, using structural glue and micro-expanded concrete, the connecting structure is independently set up, and the separation strength and connection structure are ensured. Stability of the connection between the stairs and buildings.
The stable connection between the stairs and the rest of the building is achieved, the problem of strength and connection strength are avoided, and the connection stability of prefabricated stairs is improved.
Smart Images
Figure CN222183915U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of assembled staircase structures, in particular to an assembled staircase structure with firm connections. Background Art
[0002] Prefabricated buildings are different from traditional construction methods. They transfer a large amount of on-site work to factories, and transport the finished building components and accessories to the work site for assembly through reliable connection methods. Therefore, prefabricated parts and reliable connection methods are the two most important parts of prefabricated buildings.
[0003] Stairs are one of the important components of prefabricated parts, and stair prefabricated parts need to be assembled together with the rest of the building. The Chinese utility model with publication number CN219411574U discloses an assembled concrete prefabricated part, which ensures the structural strength of the prefabricated parts by presetting a fixing frame, a reinforcement structure and a supporting structure in the prefabricated parts, while also providing a connection method between the stair prefabricated parts and the rest of the building structure. The disadvantage of this design is that the structure that ensures the strength of the stairs and the structure that ensures the connection strength of the stairs are integrated into one, which affects each other and is not conducive to maintaining the strength of the stairs. Utility Model Content
[0004] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides an assembled staircase structure to improve the stability of the staircase connection.
[0005] Technical solution: To achieve the above-mentioned purpose, the utility model discloses an assembled staircase structure, comprising a lower staircase and an upper staircase, wherein the horizontal ends of the lower staircase and the upper staircase are respectively provided with embedded iron boxes, wherein a first connecting rod is provided in the embedded iron boxes, and the first connecting rod is inserted into a first embedded sleeve of a wall panel or a staircase support beam; a preset hole is provided at the vertical end of the upper staircase, wherein a second connecting rod is connected to the preset hole, and the second connecting rod extends downward to the second embedded sleeve of the staircase support beam.
[0006] Furthermore, the embedded iron boxes are arranged in an array along the width direction of the lower staircase and the upper staircase.
[0007] Furthermore, structural adhesive is filled between the mating surface between the lower staircase and the wall panel, and between the mating surface between the upper staircase and the wall panel; structural adhesive is filled between the mating surface between the lower staircase and the floor slab, and between the lower staircase and the stair support beam; structural adhesive is filled between the mating surface between the upper staircase and the floor slab, and between the upper staircase and the stair support beam.
[0008] Furthermore, the preset hole is filled with micro-expansive concrete after being connected to the second connecting rod.
[0009] Furthermore, the first connecting rod is a bolt, and the second connecting rod is a threaded steel bar.
[0010] Furthermore, it also includes a ground floor staircase, the bottom end of which extends into a groove of the foundation, and floor slabs are arranged on both sides of the bottom of the ground floor staircase. Micro-expansive concrete is arranged between the bottom end of the ground floor staircase and the mating surface of the floor slab and between the bottom end of the ground floor staircase and the mating surface of the foundation.
[0011] The utility model discloses an assembled staircase structure, which has the following technical effects:
[0012] In this structure, the ends of the lower staircase and the upper staircase are separately provided with connecting structures, and the lower staircase and the upper staircase are connected and fixed to the rest of the building through the embedded iron box, the first embedded sleeve, the second embedded sleeve, the first connecting rod, the second connecting rod and the preset hole, which is convenient for assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the assembled staircase structure disclosed in the utility model;
[0014] Figure 2 for Figure 1 The structural diagram of A and B in the middle;
[0015] Figure 3 It is a schematic diagram of the upper staircase and the horizontal structure of the upper staircase disclosed in the utility model;
[0016] Figure 4 for Figure 1 The structural diagram at C in the middle;
[0017] Figure 5 The utility model discloses a schematic diagram of the structure of the ground floor stairs, foundation and floor slab.
[0018] In the figure, 1. lower staircase; 2. upper staircase; 3. embedded iron box; 4. first connecting rod; 5. wall panel; 6. first embedded sleeve; 7. preset hole; 8. second connecting rod; 9. staircase support beam; 10. second embedded sleeve; 11. structural adhesive; 12. floor slab; 13. slightly expansive concrete; 14. bottom staircase; 15. foundation. DETAILED DESCRIPTION
[0019] The following is combined with Figure 1 To Attachment Figure 5 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.
[0020] An assembled staircase structure includes a lower staircase 1, an upper staircase 2 and a bottom staircase 14. The bottom staircase 14 is applied to the lowest floor of a building, the upper staircase 2 can form a group with the bottom staircase 14, and the upper staircase 2 can also form a group with the lower staircase 1.
[0021] Specifically, the foundation 15 of the building is provided with a groove opening upward, and the bottom end of the ground floor staircase 14 extends into the groove of the foundation 15; the floor 12 is disposed on both sides of the ground floor staircase 14. The foundation 15 and the floor 12 form a semi-enclosed structure for the ground floor staircase 14. The micro-expansive concrete 13 is filled between the bottom end of the ground floor staircase 14 and the mating surface of the floor 12, and between the ground floor staircase 14 and the foundation 15.
[0022] Specifically, the horizontal ends of the lower staircase 1 and the upper staircase 2 are respectively provided with embedded iron boxes 3, and the embedded iron boxes 3 are arranged in an array along the width direction of the lower staircase 1 and the upper staircase 2. The wider the lower staircase 1 and the upper staircase 2 are, the more embedded iron boxes 3 there are. The first embedded sleeve 6 is respectively provided at the fitting surface between the wall panel 5 and the lower staircase 1 and the fitting surface between the staircase support beam 9 and the lower staircase 1. In this embodiment, the first embedded sleeve 6 is an M12*60 threaded steel sleeve. A first connecting rod 4 is provided in the embedded iron box 3, and the embedded iron box 3 should be filled with mortar to fix the first connecting rod 4. In this embodiment, the first connecting rod 4 is an 8.8-grade M12*65 bolt, and one end of the first connecting rod 4 penetrates the embedded iron box 3 and extends into the first embedded sleeve 6 to be screwed and fixed with the first embedded sleeve 6. Structural adhesive 11 is filled between the fitting surfaces of the lower staircase 1 and the floor 12, and between the fitting surfaces of the lower staircase 1 and the stair support beam 9. In this embodiment, the structural adhesive 11 is weather-resistant silicone adhesive.
[0023] The vertical end of the upper staircase 2 is provided with a preset hole 7 extending in the vertical direction, and a second connecting rod 8 is connected in the preset hole 7, and the second connecting rod 8 is a threaded steel bar. The second connecting rod 8 is inserted into the preset hole 7 and filled with micro-expansion concrete 13. A second embedded sleeve 10 is provided in the staircase support beam 9, and the second embedded sleeve 10 is a M12*60 threaded steel sleeve, and the second connecting rod 8 is inserted into the second embedded sleeve 10. Structural adhesive 11 is respectively provided between the upper staircase 2 and the floor 12, and between the upper staircase 2 and the staircase support beam 9.
[0024] In the present device, a new connection method for prefabricated parts of stairs (i.e., the lower staircase 1 and the upper staircase 2) is provided. Additional connecting parts (a first connecting rod 4, a first embedded sleeve 6, a preset hole 7, a second connecting rod 8, and a second embedded sleeve 10) are arranged at the ends of the prefabricated parts of the stairs, which are relatively separated from the structure for ensuring the strength of the stairs and do not affect each other, thereby ensuring the stability of the connection of the prefabricated parts of the stairs.
[0025] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An assembled staircase structure, characterized in that: The invention comprises a lower staircase (1) and an upper staircase (2), wherein the horizontal ends of the lower staircase (1) and the upper staircase (2) are respectively provided with embedded iron boxes (3), wherein a first connecting rod (4) is provided in the embedded iron boxes (3), and the first connecting rod (4) is inserted into a first embedded sleeve (6) of a wall panel (5) or a staircase support beam (9); a preset hole (7) is provided at the vertical end of the upper staircase (2), wherein a second connecting rod (8) is connected in the preset hole (7), and the second connecting rod (8) extends downward to a second embedded sleeve (10) of the staircase support beam (9).
2. The assembled staircase structure according to claim 1, characterized in that: The embedded iron boxes (3) are arranged in an array along the width direction of the lower staircase (1) and the upper staircase (2).
3. The assembled staircase structure according to claim 1, characterized in that: Structural adhesive (11) is filled between the mating surfaces of the lower staircase (1) and the wall panel (5), and between the mating surfaces of the upper staircase (2) and the wall panel (5); structural adhesive (11) is filled between the mating surfaces of the lower staircase (1) and the floor slab (12), and between the mating surfaces of the lower staircase (1) and the stair support beam (9); structural adhesive (11) is filled between the mating surfaces of the upper staircase (2) and the floor slab (12), and between the upper staircase (2) and the stair support beam (9).
4. The assembled staircase structure according to claim 1, characterized in that: The preset hole (7) is connected to the second connecting rod (8) and then filled with micro-expansive concrete (13).
5. The assembled staircase structure according to claim 1, characterized in that: The first connecting rod (4) is a bolt, and the second connecting rod (8) is a threaded steel bar.
6. The assembled staircase structure according to claim 1, characterized in that: The invention also comprises a ground floor staircase (14), the bottom end of which extends into a groove of a foundation (15), and floor slabs (12) are respectively arranged on both sides of the bottom of the ground floor staircase (14), and micro-expansive concrete (13) is arranged between the bottom end of the ground floor staircase (14) and the mating surface of the floor slab (12), and between the bottom end of the ground floor staircase (14) and the mating surface of the foundation (15).