Subway station side wall protection layer steel mold control structure

Abstract

The utility model belongs to the technical field of civil engineering construction, and particularly relates to a subway station side wall protection layer steel mould control structure which comprises a plurality of groups of side steel frames distributed at equal intervals, second horizontal channel steel fixed at the top ends of the side steel frames and steel moulding plates fixed on the outer vertical faces of the side steel frames, and further comprises square steel used for controlling the thickness of a steel bar protection layer. The tensioning mechanism is fixed to the top end of the second horizontal steel channel and used for tensioning the side wall reinforcement cage so that the side wall reinforcement cage can be tightly attached to the square steel; according to the utility model, the tensioning mechanism is matched with the square steel, so that the thickness of the reinforcing steel bar protective layer can be accurately controlled, and the excessive use of materials such as concrete and reinforcing steel bars can be obviously reduced, thereby reducing the material cost, meeting the development trend of green buildings, effectively reducing the quality risk, avoiding the rework and repair cost caused by the quality risk, and improving the construction quality. The safety of the structure can be ensured, and structural damage and safety accidents caused by the thickness problem of the protective layer are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of civil engineering construction technology and is applicable to the control of steel formwork for subway side walls. Specifically, it relates to a steel formwork control structure for the protective layer of subway station side walls. Background Technology

[0002] Side wall steel formwork is one of the important tools in building construction. It is mainly used for concrete pouring and shaping. It is usually composed of combined steel formwork and single-sided support to ensure the stability and safety of construction. Side wall steel formwork is widely used in the construction of urban subways.

[0003] In existing technologies, the thickness of the side wall protective layer is difficult to control due to the influence of station floor height, concrete pouring stress, and vibration force. Under normal circumstances, the thickness of the subway side wall protective layer should be between 50-80 mm. The thickness requirements of the subway side wall protective layer are of great significance to subway construction and passenger safety. Therefore, it is crucial to control the thickness of the side wall protective layer within a reasonable range.

[0004] To address the aforementioned issues, this utility model proposes a steel formwork control structure for the protective layer of the side wall of a subway station. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a steel formwork control structure for the protective layer of subway station side walls, which features convenient use, high stability, and good control effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a steel formwork control structure for the protective layer of a subway station side wall, comprising multiple sets of equally spaced side steel frames, a second horizontal channel steel fixed to the top of the side steel frames, and a steel formwork fixed to the outer facade of the side steel frames, and further comprising:

[0007] Square steel, which is fixedly connected to the second horizontal channel steel and located between the second horizontal channel steel and the side wall reinforcement cage, is used to control the thickness of the reinforcement protective layer;

[0008] A tensioning mechanism is fixed to the top of the second horizontal channel steel and is used to tension the side wall reinforcement cage so that the side wall reinforcement cage is tightly attached to the square steel.

[0009] As a preferred technical solution of this utility model, it also includes:

[0010] Supporting steel components are welded to both the top and bottom surfaces of the second horizontal channel steel to clamp the square steel.

[0011] As a preferred embodiment of this utility model, the tensioning mechanism includes:

[0012] A guide sleeve, which is welded to the top surface of the second horizontal channel steel;

[0013] A first threaded rod, which penetrates the guide sleeve;

[0014] The No. 1 L-shaped tie rod is fixed to one end of the No. 1 threaded rod and is used to tighten the side wall steel cage.

[0015] A limiting disc, which is sleeved on the first threaded rod;

[0016] A No. 1 regular hexagonal nut, which is welded to the limiting plate and threadedly connected to the No. 1 threaded rod.

[0017] As a preferred embodiment of this utility model, the tensioning mechanism further includes:

[0018] Auxiliary blocks, a plurality of which are fixed at equal intervals along the circumferential direction to the outer wall of the limiting disk.

[0019] As a preferred embodiment of this utility model, the tensioning mechanism further includes:

[0020] An auxiliary connecting sleeve is fitted onto the connection node between the first L-shaped tie rod and the first threaded rod, and an operating hole is machined on the auxiliary connecting sleeve.

[0021] As a preferred embodiment of this utility model, the side steel frame includes:

[0022] Vertical channel steel, two vertical channel steels are symmetrically distributed, the steel template is fixedly connected to the vertical channel steels, and the inner sides of the two vertical channel steels have through holes;

[0023] A first horizontal channel steel, two of which are symmetrically distributed, and one end of the first horizontal channel steel is welded and fixed to the vertical channel steel;

[0024] Inclined channel steel, two inclined channel steels are symmetrically distributed, and one end of the inclined channel steel is welded and fixed to the vertical channel steel, and the other end is welded and fixed to the first horizontal channel steel;

[0025] A reinforcing steel beam is provided, wherein one end of the reinforcing steel beam is welded and fixed to the vertical channel steel, and the other end is welded and fixed to the inclined channel steel.

[0026] As a preferred technical solution of this utility model, it also includes:

[0027] The No. 3 horizontal channel steel is welded at equal intervals along the vertical direction to the back of the steel template, and the No. 3 horizontal channel steel is machined with pull holes.

[0028] The second threaded rod passes through the through hole;

[0029] The second L-shaped tie rod is fixed to one end of the second threaded rod, and the vertical part of the second L-shaped tie rod passes through the pull hole;

[0030] A limiting plate, which is sleeved on the second threaded rod;

[0031] The No. 2 regular hexagonal nut is installed on the No. 2 threaded rod by means of thread engagement.

[0032] As a preferred technical solution of this utility model, it also includes:

[0033] Erect steel beams, and multiple steel beams are welded at equal intervals along the horizontal direction to the back of the steel formwork.

[0034] Compared with the prior art, the beneficial effects of this utility model are:

[0035] In this invention, the thickness of the steel reinforcement protective layer can be precisely controlled by the tensioning mechanism in conjunction with the square steel. This can significantly reduce the excessive use of materials such as concrete and steel reinforcement, thereby reducing material costs, which is in line with the development trend of green building. It can also effectively reduce quality risks, avoid rework and repair costs, ensure structural safety, and reduce structural damage and safety accidents caused by protective layer thickness issues.

[0036] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0037] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0038] Figure 1 This is a schematic diagram of the structure of this utility model;

[0039] Figure 2 This utility model Figure 1 Enlarged structural diagram of the tensioning mechanism in the middle;

[0040] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the diagram;

[0041] Figure 4 This is a schematic diagram of the isometric structure of the side steel frame in this utility model;

[0042] Figure 5 This is a schematic diagram of the isometric structure of the steel template in this utility model;

[0043] Figure 6 This is a schematic diagram of the isometric structure of the auxiliary connecting sleeve in this utility model.

[0044] In the diagram: 1. Side steel frame; 101. Through hole; 11. Vertical channel steel; 12. No. 1 horizontal channel steel; 13. Inclined channel steel; 14. Reinforcing steel beam; 2. No. 2 horizontal channel steel; 21. Square steel; 22. Supporting steel components; 3. Steel formwork; 31. No. 3 horizontal channel steel; 32. Vertical steel beam; 311. Pull hole; 4. Tensioning mechanism; 41. Guide sleeve; 42. No. 1 threaded rod; 43. No. 1 L-shaped tie rod; 44. Limiting plate; 441. Auxiliary block; 45. No. 1 hexagonal nut; 46. Auxiliary connecting sleeve; 461. Operating hole; 5. No. 2 threaded rod; 6. No. 2 L-shaped tie rod; 7. Limiting plate; 8. No. 2 hexagonal nut. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] Please see Figures 1-6 The present invention provides the following technical solution: a steel formwork control structure for the protective layer of a subway station side wall, including multiple sets of equally spaced side steel frames 1, a No. 2 horizontal channel steel 2 fixed to the top of the side steel frame 1, and a steel formwork 3 fixed to the outer facade of the side steel frame 1, and also including: square steel 21 and a tensioning mechanism 4.

[0047] Furthermore, by Figure 1 As shown in this embodiment, square steel 21 is fixedly connected to the second horizontal channel steel 2 and located between the second horizontal channel steel 2 and the side wall reinforcement cage. It is used to control the thickness of the reinforcement protective layer. The tensioning mechanism 4 is fixed to the top of the second horizontal channel steel 2 and is used to tension the side wall reinforcement cage so that the side wall reinforcement cage is tightly attached to square steel 21. After adopting the above scheme, when in use, the side steel frame 1, the second horizontal channel steel 2, square steel 21 and steel formwork 3 are built on site. The square steel 21 is used to control the thickness of the reinforcement protective layer, and the tensioning mechanism 4 is used to tension the side wall reinforcement cage. At this time, the side wall reinforcement cage is tightly attached to square steel 21, so that the thickness of the reinforcement protective layer is effectively controlled. The width of square steel 21 is the thickness of the reinforcement protective layer. The tensioning mechanism 4 ensures the stability between square steel 21 and side wall reinforcement cage, effectively avoiding deviations caused by the station's floor height, concrete pouring stress and vibration force.

[0048] It should be noted that square steel 21 is a custom-made steel component with known dimensions. The width of square steel 21 is the thickness of the reinforcing steel protective layer that needs to be controlled. It is understood that in actual use, square steel 21 can also be a component of other materials and shapes, such as square tubes, channel steel, etc., and can also achieve the same function.

[0049] Preferably, by Figure 1 and Figure 2 As shown, this embodiment also includes: a support steel member 22. The support steel member 22 is welded on both the top and bottom surfaces of the second horizontal channel steel 2. It is used to clamp the square steel 21. Through the above design, the support steel member 22 is used to support and pre-fix the square steel 21, ensuring the stability of the square steel 21 and preventing the square steel 21 from sliding longitudinally. When the tensioning mechanism 4 tensions the side wall steel cage, the square steel 21 is completely locked.

[0050] It is worth mentioning that, as shown in the figure, in this utility model, the supporting steel member 22 is a steel plate, which is welded to the second horizontal channel steel 2. In the specific construction, the lower supporting steel member 22 is welded first, the square steel 21 is placed on the supporting steel member 22, and then the upper supporting steel member 22 is welded to clamp the square steel 21.

[0051] It is easy to understand that, in addition to steel plates, steel bars of appropriate length can be taken on site and welded to the No. 2 horizontal channel steel 2. The steel bars are used to support and clamp the square steel 21. It is worth noting that, regardless of whether steel plates or steel bars are used, multiple sets need to be set on the No. 2 horizontal channel steel 2. For example, a set of supporting steel parts 22 can be set every one meter for higher stability.

[0052] Optionally, by Figure 1 and Figure 2 As shown, in this embodiment, the tensioning mechanism 4 includes: a guide sleeve 41, a first threaded rod 42, a first L-shaped tie rod 43, a limiting plate 44, and a first hexagonal nut 45. The guide sleeve 41 is welded to the top surface of the second horizontal channel steel 2. The first threaded rod 42 passes through the guide sleeve 41. The first L-shaped tie rod 43 is fixed to one end of the first threaded rod 42 and is used to tension the side wall reinforcement cage. The limiting plate 44 is sleeved on the first threaded rod 42. The first hexagonal nut 45 is welded to the limiting plate 44 and is connected to the first threaded rod 42. 2. Threaded connection: After adopting the above scheme, when in use, first weld the guide sleeve 41 to the top surface of the second horizontal channel steel 2. The first threaded rod 42 and the first L-shaped tie rod 43 form an "L" shaped structure. The bent part is used to tighten the steel cage. The first threaded rod 42 passes through the guide sleeve 41. After tightening the first hexagonal nut 45, the first threaded rod 42 continuously pulls the first L-shaped tie rod 43 to move under the threaded connection until the first L-shaped tie rod 43 tightens the steel cage, so that the steel cage is close to the square steel 21.

[0053] It should be noted that during actual construction, multiple sets of tensioning mechanisms 4 are set on the No. 2 horizontal channel steel 2, for example, one set of tensioning mechanism 4 is set for every one meter, which results in higher stability.

[0054] Preferably, by Figure 1 and Figure 2 As shown in this embodiment, the tensioning mechanism 4 further includes: auxiliary blocks 441. Multiple auxiliary blocks 441 are fixed at equal intervals along the circumferential direction on the outer wall of the limiting plate 44. The multiple auxiliary blocks 441 facilitate the rotation of the limiting plate 44 and the first hexagonal nut 45. On the one hand, the first hexagonal nut 45 can be rotated directly using a common wrench. If it is not convenient to use a wrench, a steel bar of appropriate length can be taken on site and placed inside the multiple auxiliary blocks 441. The steel bar can also be used as a handle to rotate the limiting plate 44 and the first hexagonal nut 45.

[0055] Preferably, by Figure 1 , Figure 2 and Figure 6 As shown, in this embodiment, the tensioning mechanism 4 further includes an auxiliary connecting sleeve 46, which is sleeved at the connection node between the first L-shaped tie rod 43 and the first threaded rod 42. An operating hole 461 is machined on the auxiliary connecting sleeve 46, allowing for direct welding and fixing of the first L-shaped tie rod 43 and the first threaded rod 42. The first L-shaped tie rod 43 can be customized; in actual construction, it is sourced from the construction site, i.e., a suitable length of steel bar is bent into an "L" shape. This is because the steel bar and the... All threaded rods 42 are cylindrical, and direct welding results in poor stability and requires positioning during welding, which is cumbersome. Therefore, an auxiliary connecting sleeve 46 is further provided. When fixing the first L-shaped tie rod 43 and the first threaded rod 42, one end of the first L-shaped tie rod 43 and the first threaded rod 42 are inserted into the auxiliary connecting sleeve 46 respectively, and welded along the operating hole 461, so that the auxiliary connecting sleeve 46, the first L-shaped tie rod 43 and the first threaded rod 42 are welded into one piece, which has higher stability and does not require positioning, making it suitable for on-site installation.

[0056] Optionally, by Figure 1 , Figure 3 and Figure 4As shown, in this embodiment, the side steel frame 1 includes: vertical channel steel 11, a first horizontal channel steel 12, an inclined channel steel 13, and a reinforcing steel beam 14. The two vertical channel steels 11 are symmetrically distributed, and the steel template 3 is fixedly connected to the vertical channel steels 11. The inner sides of the two vertical channel steels 11 have through holes 101. The two first horizontal channel steels 12 are symmetrically distributed, and one end of the first horizontal channel steel 12 is welded and fixed to the vertical channel steel 11. The two inclined channel steels 13 are symmetrically distributed, and one end of the inclined channel steel 13 is welded and fixed to the vertical channel steel 11, and the other end is welded and fixed to the first horizontal channel steel 12. One end of the reinforcing steel beam 14 is welded and fixed to the vertical channel steel 11, and the other end is welded and fixed to the inclined channel steel 13. The above scheme is only a preferred embodiment of this utility model and is not intended to limit this utility model. In other available embodiments, components such as square tubes and H-beams can also be used to build the side steel frame 1, but through holes 101 need to be processed separately.

[0057] Preferably, by Figure 1 , Figure 3 and Figure 4 As shown, this embodiment also includes: a No. 3 horizontal channel steel 31, a No. 2 threaded rod 5, a No. 2 L-shaped tie rod 6, a limiting plate 7, and a No. 2 hexagonal nut 8. Multiple No. 3 horizontal channel steels 31 are welded at equal intervals along the vertical direction to the back of the steel template 3, and a pull hole 311 is machined on the No. 3 horizontal channel steel 31. The No. 2 threaded rod 5 passes through the through hole 101. The No. 2 L-shaped tie rod 6 is fixed to one end of the No. 2 threaded rod 5, and the vertical part of the No. 2 L-shaped tie rod 6 passes through the pull hole 311. The limiting plate 7 is sleeved on the No. 2 threaded rod 5. The No. 2 hexagonal nut 8 is installed on the No. 2 threaded rod 5 by threaded engagement. With the above scheme, in use, the vertical part of the No. 2 L-shaped tie rod 6 passes through the pull hole 311, and the No. 2 threaded rod 5 passes through the through hole 101. After tightening the No. 2 hexagonal nut 8, the steel template 3 can be tightened through the No. 2 L-shaped tie rod 6 to achieve stable installation of the steel template 3.

[0058] It is easy to understand that the implementation of the above solution is similar to the working principle of the tensioning mechanism 4 in this utility model. Since the tensioning mechanism 4 has been described in detail above, it will not be described in detail here.

[0059] In addition, the purpose of the above solution is to facilitate the installation and disassembly of the steel formwork 3, and also to facilitate on-site construction. In other available embodiments, if the difficulty of disassembly and on-site construction is not required, and it is only necessary to ensure the firmness of the steel formwork 3 installation, the steel formwork 3 is preferably directly welded to the side steel frame 1.

[0060] Preferably, by Figure 1 and Figure 5 As shown, in this embodiment, it also includes: vertical steel beams 32, and multiple vertical steel beams 32 are welded at equal intervals along the horizontal direction to the back of the steel formwork 3, which further improves the structural strength of the steel formwork 3.

[0061] Components not described in detail in this article are existing technologies.

[0062] The working principle and usage process of this utility model: When using the control structure of this utility model, a side steel frame 1, a second horizontal channel steel 2, a square steel 21 and a steel template 3 are erected on site. The square steel 21 is used to control the thickness of the steel reinforcement protective layer.

[0063] A guide sleeve 41 is welded to the top surface of the second horizontal channel steel 2. The first threaded rod 42 and the first L-shaped tie rod 43 form an "L" shaped structure. The bent part is used to tighten the steel cage. The first threaded rod 42 passes through the guide sleeve 41.

[0064] After tightening the No. 1 hexagonal nut 45, the No. 1 threaded rod 42 continuously pulls the No. 1 L-shaped tie rod 43 under the action of thread screwing until the No. 1 L-shaped tie rod 43 tightens the reinforcing cage, so that the reinforcing cage is close to the square steel 21, and the thickness of the reinforcing concrete cover is effectively controlled. The width of the square steel 21 is the thickness of the reinforcing concrete cover. The tensioning mechanism 4 ensures the stability between the square steel 21 and the side wall reinforcing cage, effectively avoiding deviations caused by the station's floor height, concrete pouring stress and vibration force.

[0065] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A steel formwork control structure for the protective layer of a subway station side wall, comprising multiple sets of equally spaced side steel frames (1), a second-order horizontal channel steel (2) fixed to the top of the side steel frames (1), and a steel formwork (3) fixed to the outer facade of the side steel frames (1), characterized in that, Also includes: Square steel (21), which is fixedly connected to the second horizontal channel steel (2) and located between the second horizontal channel steel (2) and the side wall reinforcement cage, is used to control the thickness of the reinforcement protective layer; The tensioning mechanism (4) is fixed to the top of the second horizontal channel steel (2) and is used to tension the side wall reinforcement cage so that the side wall reinforcement cage is tightly attached to the square steel (21).

2. The steel formwork control structure for the protective layer of a subway station side wall according to claim 1, characterized in that: Also includes: Supporting steel parts (22) are welded to both the top and bottom surfaces of the second horizontal channel steel (2) to hold the square steel (21).

3. The steel formwork control structure for the protective layer of a subway station side wall according to claim 1, characterized in that: The tensioning mechanism (4) includes: Guide sleeve (41), the guide sleeve (41) is welded to the top surface of the second horizontal channel steel (2); A first threaded rod (42) passes through the guide sleeve (41); The first L-shaped tie rod (43) is fixed to one end of the first threaded rod (42) and is used to tighten the side wall steel cage; A limiting disc (44) is sleeved on the first threaded rod (42); A No. 1 regular hexagonal nut (45) is welded to the limiting plate (44) and threadedly connected to the No. 1 threaded rod (42).

4. The steel formwork control structure for the protective layer of a subway station side wall according to claim 3, characterized in that: The tensioning mechanism (4) further includes: Auxiliary blocks (441), a plurality of the auxiliary blocks (441) are fixed at equal intervals along the circumferential direction to the outer wall of the limiting disk (44).

5. The steel formwork control structure for the protective layer of a subway station side wall according to claim 3, characterized in that: The tensioning mechanism (4) further includes: An auxiliary connecting sleeve (46) is fitted onto the connection node between the first L-shaped tie rod (43) and the first threaded rod (42), and an operating hole (461) is machined on the auxiliary connecting sleeve (46).

6. The steel formwork control structure for the protective layer of a subway station side wall according to claim 1, characterized in that: The side steel frame (1) includes: Vertical channel steel (11), two vertical channel steels (11) are symmetrically distributed, the steel template (3) is fixedly connected to the vertical channel steel (11), and the inner sides of the two vertical channel steels (11) have through holes (101); A first horizontal channel steel (12) is provided, and two first horizontal channel steels (12) are symmetrically distributed. One end of the first horizontal channel steel (12) is welded and fixed to the vertical channel steel (11). Inclined channel steel (13), two inclined channel steels (13) are symmetrically distributed, and one end of the inclined channel steel (13) is welded and fixed to the vertical channel steel (11), and the other end is welded and fixed to the first horizontal channel steel (12); A reinforcing steel beam (14) is provided, with one end of the reinforcing steel beam (14) welded and fixed to the vertical channel steel (11) and the other end welded and fixed to the inclined channel steel (13).

7. The steel formwork control structure for the protective layer of a subway station side wall according to claim 6, characterized in that: Also includes: The No. 3 horizontal channel steel (31) is welded at equal intervals along the vertical direction to the back of the steel template (3), and the No. 3 horizontal channel steel (31) is provided with pull holes (311). The second threaded rod (5) passes through the through hole (101); The second L-shaped tie rod (6) is fixed to one end of the second threaded rod (5), and the vertical part of the second L-shaped tie rod (6) passes through the pull hole (311); Limiting plate (7), the limiting plate (7) is sleeved on the second threaded rod (5); The No. 2 regular hexagonal nut (8) is installed on the No. 2 threaded rod (5) by means of thread engagement.

8. The steel formwork control structure for the protective layer of a subway station side wall according to claim 1, characterized in that: Also includes: Steel beams (32) are installed, and multiple steel beams (32) are welded at equal intervals along the horizontal direction to the back of the steel template (3).

Images