Subway platform plate structure

Abstract

The utility model relates to the technical field of subway construction, in particular to a structure of a subway platform plate. A subway platform plate structure comprises a platform structure, the platform structure comprises a prefabricated plate and a supporting frame, the supporting frame comprises at least two supporting columns, and the supporting columns are provided with column feet; and the top face of the bottom plate is provided with a limiting piece, the limiting piece is provided with a containing cavity, and the column feet can stretch into the containing cavity. A subway platform plate structure comprises a platform structure and a bottom plate, the platform structure comprises a prefabricated plate and a supporting frame, the bottom plate is provided with a limiting piece, and the limiting piece is provided with a containing cavity capable of containing a column foot. And in the process of hoisting the support frame, the connection position of the column base has an obvious indication mark, so that the support frame is convenient to position, whether the support frame is in place or not can be judged by directly judging whether the column base is put into the accommodating cavity or not, and the construction efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of subway construction, in particular to a structure of a subway station platform slab. Background Art

[0002] Subway, as an important part of the urban public transportation system, is an electric rail transportation tool running in underground tunnels. With its high efficiency, large capacity and high punctuality, it has become an important means to alleviate urban traffic congestion and promote regional connectivity. Subway platform is the core area of ​​the subway station that directly serves passengers getting on and off the train. It is usually cast with high-strength concrete or reinforced concrete. The design must meet the requirements of load-bearing, wear-resistant, anti-skid, fire-resistant and good drainage performance. Subway platform is usually

[0003] Existing subway platform construction mostly uses prefabricated support frames, prefabricated panels and base plates for on-site assembly, and mostly uses a hoisting method to hoist the support frame to the predetermined installation position of the base plate.

[0004] However, in existing construction, the support frames and base plates of subway platforms are mostly connected and fixed by sleeves, which requires high lifting construction precision and a relatively complicated construction process, affecting construction efficiency. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the support frame and the bottom plate of the subway platform in the prior art are mostly connected and fixed by sleeves, which requires high lifting construction precision, the construction process is relatively complicated, and the construction efficiency is affected, and a structure of a subway platform plate is provided.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A structure of a subway platform plate, comprising:

[0008] A platform structure, the platform structure comprising a prefabricated plate and a support frame, the support frame comprising at least two support columns, and the support columns having column feet;

[0009] A bottom plate, wherein a limiting member is arranged on the top surface of the bottom plate, wherein the limiting member is provided with an accommodating cavity, and the column foot can extend into the accommodating cavity.

[0010] Because the platform structure includes prefabricated panels and support frames, it is a prefabricated platform structure, which can reduce cast-in-place construction, and can reduce wet work on site as much as possible, which is suitable for the construction environment of subway stations with poor ventilation. The platform structure is arranged above the base plate and connected to the base plate through column feet. In the construction of the prior art, the fixed position of the column feet is first determined on the base plate, the support frame is transported to the predetermined position by hoisting, and then the support frame is connected to the base plate by sleeve connection. However, the sleeve is pre-buried inside the base plate, and there is no obvious indicator on the surface of the base plate to indicate the position of the sleeve. Therefore, during the hoisting process, the process of determining whether the support frame is in place is relatively complicated. And the cross-sectional area of ​​the sleeve itself is small, so its tolerance for the position deviation of the support frame is explained. Therefore, during hoisting, the support frame needs to be accurately positioned at the pre-buried position of the corresponding sleeve, and the position of the support frame needs to be fine-tuned many times. The hoisting process is time-consuming and affects the construction efficiency. In this device, a limiter is directly arranged on the top surface of the base plate, and the limiter is provided with a receiving cavity that can accommodate the column foot. In the process of hoisting the support frame, the connection position of the column foot has obvious indication marks, which is convenient for positioning the support frame. Whether the support frame is in place can be directly judged by judging whether the column foot is placed in the receiving cavity, which is conducive to improving construction efficiency. After the column foot is inserted into the receiving cavity, it can be cast inside the receiving cavity so that the column foot and the receiving cavity are fixed together; it can also be welded and fixed by welding the column foot and the steel structure of the receiving cavity.

[0011] As a preferred solution of the utility model, the cross-sectional size of the column foot increases from one end close to the prefabricated plate to one end away from the prefabricated plate, and the size of the opening of the accommodating cavity is smaller than the size of the bottom of the accommodating cavity.

[0012] The cross-sectional size of the bottom end of the column foot is the largest, which can improve the balance of the support frame. The size of the cavity opening is smaller than the size of the cavity bottom, which is conducive to fixing the column foot to the top surface of the bottom plate and improving the stability of the subway platform structure. The concrete poured inside the cavity can limit the movement of the column foot towards or away from the bottom plate.

[0013] As a preferred solution of the utility model, the column foot is an I-shaped structure, and the dimensions of the upper and lower ends of the column foot are larger than the dimensions of the middle part of the column foot.

[0014] By setting the column foot in a form of large ends and small middle, the concrete poured inside the accommodating cavity can limit the movement of the column foot towards or away from the base plate.

[0015] As a preferred solution of the utility model, the limiting member includes a side wall, and a plurality of cavity steel bars are arranged in the side wall. The plurality of cavity steel bars are distributed at intervals along the vertical direction, and the plurality of cavity steel bars are all arranged around the accommodating cavity.

[0016] The cavity mouth steel bars surround the accommodating cavity, which is beneficial to enhancing the strength of the limiting member and avoiding displacement of the support frame as much as possible.

[0017] As a preferred solution of the utility model, the limiting member is provided with a fixed steel bar, and the fixed steel bar extends into the bottom plate.

[0018] The fixed steel bars extend from the limiting piece into the bottom plate, which can avoid positional deviation of the limiting piece as much as possible, thereby improving the structural stability of the device.

[0019] As a preferred solution of the present utility model, the width of the prefabricated board is 1.8m-2.2m.

[0020] When the prefabricated panels are fixed on top of the support frame, the lateral directions of the subway lines corresponding to the two sides thereof are taken as the width of the prefabricated panels. The width of existing prefabricated panels is mostly about 1m. As the width of the prefabricated panels in this device increases, the number of prefabricated panels required for the platform panels of the same area is reduced. In the prior art, the prefabricated panels are set on the top surface of the support frame by hoisting. Therefore, by increasing the width of the prefabricated panels, the number of times the prefabricated panels are hoisted can be reduced, which is beneficial to improving the efficiency of construction. In addition, because each prefabricated panel needs to be fixed with embedded parts on the top surface of the support frame, increasing the width of the prefabricated panels can reduce the number of embedded parts and minimize the adverse effects of the embedded parts on the support frame. Reducing the number of prefabricated panels can also reduce the joints between the prefabricated panels and improve the overall stability of the platform structure.

[0021] As a preferred solution of the utility model, the support frame includes a supporting part, the supporting part is used to support the prefabricated board, the supporting part is pre-embedded with a sleeve, the prefabricated board is correspondingly provided with a through hole, and the through hole and the sleeve are connected by a screw and grouting material.

[0022] Connecting through the embedded sleeve can improve the structural safety and reliability and extend the service life of the device.

[0023] As a preferred solution of the utility model, an anchor head is arranged at the bottom end of the screw rod.

[0024] An anchor head is provided at the bottom end of the screw rod, which can increase the fixing strength and facilitate the structural stability.

[0025] As a preferred solution of the present utility model, the platform structure further includes a rib beam, and the rib beam is connected to the side of the prefabricated plate.

[0026] By connecting the rib beams on the side of the prefabricated panel, the bending strength of the device can be improved, the overall stability can be increased, and the installation of the prefabricated panel can be facilitated.

[0027] As a preferred solution of the utility model, two adjacent rib beams are matched in concave and convex configurations.

[0028] Because the rib beams are arranged on the sides of the prefabricated panels, when two adjacent prefabricated panels are placed side by side, they are connected to each other through the sides of the two rib beams. The concave and convex matching of the two adjacent rib beams is conducive to improving the overall stability of the structure.

[0029] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0030] A structure of a subway platform slab comprises a platform structure and a base plate, wherein the platform structure comprises a prefabricated plate and a support frame, the base plate is provided with a limiter, and the limiter is provided with a receiving cavity capable of receiving a column foot. In the process of hoisting the support frame, the connection position of the column foot is clearly indicated, which is convenient for positioning the support frame, and whether the support frame is in place can be directly determined by judging whether the column foot is placed in the receiving cavity, which is conducive to improving construction efficiency. This device solves the existing technical problem that the support frame and the base plate of the subway platform are mostly connected and fixed by sleeves, which requires high hoisting construction precision, and the construction process is relatively complicated, which affects the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the platform structure in Example 1;

[0032] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0033] Figure 3 is a schematic diagram of the structure of a subway platform plate in Example 1;

[0034] Figure 4 yes Figure 3 The enlarged view of point B in the middle;

[0035] Figure 5 yes Figure 3 The cross-sectional view at Ⅰ-Ⅰ in the middle;

[0036] Icon: 1-precast slab, 2-rib beam, 3-support frame, 301-support part, 302-support column, 303-column base, 4-hanging point, 5-sleeve, 6-screw, 7-grouting material, 8-anchor head, 9-fixed steel bar, 10-cavity steel bar, 12-concrete, 13-base plate. DETAILED DESCRIPTION

[0037] The utility model is described in detail below in conjunction with the accompanying drawings.

[0038] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0039] In the description of the following specific embodiments, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or the orientation or position relationship when the device / apparatus is usually used. These terms of orientation or position relationship are only for the convenience of description or simplification of the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation of the present invention.

[0040] The terms "horizontal", "vertical" and the like do not require the corresponding devices / components / elements to be absolutely horizontal or vertical or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in specific directions such as "horizontal" and "vertical", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the utility model.

[0041] The terms “first”, “second”, “third”, etc. are merely used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0042] The terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be welding, riveting, bolting, threaded connection and other commonly used connection methods in the field. It can be directly connected or indirectly connected through an intermediate medium. It can also be the internal connection of two elements.

[0043] Example 1

[0044] like Figures 1 to 5 As shown, a structure of a subway platform slab comprises: a platform structure, the platform structure comprises a prefabricated slab 1 and a support frame 3, the support frame 3 comprises at least two support columns 302, the support columns 302 have column feet 303; a base plate 13, the top surface of the base plate 13 is provided with a limiting member, the limiting member is provided with a receiving cavity, and the column foot 303 can extend into the receiving cavity.

[0045] like Figure 1As shown, the support frame 3 used in this embodiment is a π-shaped support frame, which includes two support columns 302 arranged at intervals. The support frame 3 also includes a supporting portion 301 and a hanging point 4. The hanging point 4 is arranged on the support column 302.

[0046] like Figure 4 As shown, in this embodiment, the cross-sectional dimensions of the column foot 303 increase from one end close to the precast panel 1 to the end away from the precast panel 1, and the size of the cavity opening of the accommodating cavity is smaller than the size of the cavity bottom of the accommodating cavity. The cross-sectional dimensions of the bottom end of the column foot 303 are the largest, which can improve the balance of the support frame 3. And the size of the cavity opening of the accommodating cavity is smaller than the size of the cavity bottom of the accommodating cavity, which is conducive to fixing the column foot 303 to the top surface of the bottom plate 13 and improving the stability of the subway platform structure. And the concrete 12 poured inside the accommodating cavity can limit the movement of the column foot 303 close to or away from the bottom plate 13.

[0047] like Figure 4 and Figure 5 As shown, the position limiting member includes a side wall, and a plurality of cavity steel bars 10 are arranged in the side wall. The plurality of cavity steel bars 10 are distributed at intervals along the vertical direction, and the plurality of cavity steel bars 10 are arranged around the accommodating cavity. In this embodiment, there are a total of six cavity steel bars, which are divided into two groups, and the two groups are respectively close to the inner wall and the outer wall of the side wall of the position limiting member. One group includes three cavity steel bars arranged at intervals along the length direction of the support column 302. The cavity steel bars 10 surround the accommodating cavity, which is beneficial to enhance the strength of the position limiting member and avoid displacement of the support frame 3 as much as possible. As shown Figures 3 to 5 As shown, the position limiter is provided with a fixed steel bar 9, and the fixed steel bar 9 extends into the bottom plate 13. The fixed steel bar 9 extends from the position limiter into the bottom plate 13, which can avoid the position limiter from being offset as much as possible, and is conducive to improving the structural stability of the device.

[0048] The column foot 303 can also be replaced with an I-shaped structure (not shown in the figure), and the dimensions of the upper and lower ends of the column foot 303 are larger than the dimensions of the middle of the column foot 303. If the column foot 303 is larger at the ends and smaller in the middle, the concrete 12 poured inside the accommodating cavity can limit the movement of the column foot 303 toward or away from the bottom plate 13.

[0049] The width of the prefabricated board 1 is 1.8m-2.2m, preferably 2m. In this embodiment, the direction of the line connecting the two support columns 302 of the π-type support frame is the width direction of the prefabricated board 1. In actual use, the two lines of the subway train are respectively arranged on both sides of the π-type support frame, and the π-type support frame is perpendicular to the two lines. The width of the existing prefabricated board 1 is mostly about 1m. The increase in the width of the prefabricated board 1 in the present device reduces the number of prefabricated boards 1 required for the platform board of the same area. In the prior art, the prefabricated board 1 is set on the top surface of the support frame 3 by hoisting. Therefore, by increasing the width of the prefabricated board 1, the number of hoisting prefabricated boards 1 can be reduced, which is conducive to improving the efficiency of construction. In addition, because each prefabricated board 1 needs to be fixed with embedded parts on the top surface of the support frame 3, increasing the width of the prefabricated board 1 can reduce the number of embedded parts and minimize the adverse effects of the embedded parts on the support frame 3. And reducing the number of prefabricated boards 1 can reduce the joints between the prefabricated boards 1 and improve the overall stability of the platform structure. According to corresponding calculations, after the precast panel 1 is enlarged, the reinforcement of the precast panel 1 does not need to be changed, and the thickness of the precast panel 1 does not need to be changed.

[0050] like Figure 1 and Figure 2 As shown, the support frame 3 includes a supporting portion 301, and the supporting portion 301 is used to support the prefabricated panel 1. The supporting portion 301 is pre-buried with a sleeve 5. The prefabricated panel 1 is provided with a through hole at a position corresponding to the sleeve 5. The screw 6 passes through the through hole and the sleeve 5 to fix the prefabricated panel 1 to the top surface of the supporting portion 301. The through hole is filled with grouting material 7. The bottom end of the screw 6 is provided with an anchor head 8 to increase the fixing strength and facilitate the structural stability.

[0051] like Figure 3 As shown, it also includes rib beams 2, which are connected to the side of the prefabricated panel 1. The concave and convex matching of two adjacent rib beams 2 is beneficial to improving the overall stability of the structure.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A structure of a subway platform, characterized in that: Include: A platform structure, the platform structure comprising a prefabricated plate (1) and a support frame (3), the support frame (3) comprising at least two support columns (302), the support columns (302) having column feet (303); A bottom plate (13), wherein a limit member is disposed on the top surface of the bottom plate (13), wherein the limit member is provided with an accommodating cavity, and the column foot (303) can extend into the accommodating cavity.

2. The structure of a subway platform according to claim 1, characterized in that: The cross-sectional dimensions of the column foot (303) increase from an end close to the prefabricated plate (1) to an end away from the prefabricated plate (1), and the dimensions of the opening of the accommodating cavity are smaller than the dimensions of the bottom of the accommodating cavity.

3. The structure of a subway platform according to claim 1, characterized in that: The column foot (303) is an I-shaped structure, and the dimensions of the upper and lower ends of the column foot (303) are larger than the dimension of the middle part of the column foot (303).

4. The structure of a subway platform according to claim 1, characterized in that: The position-limiting member comprises a side wall, in which a plurality of cavity opening steel bars (10) are arranged, the plurality of cavity opening steel bars (10) are distributed at intervals in the vertical direction, and the plurality of cavity opening steel bars (10) are all arranged around the accommodating cavity.

5. The structure of a subway platform according to claim 1, characterized in that: The limiting member is provided with a fixed steel bar (9), and the fixed steel bar (9) extends into the bottom plate (13).

6. A subway platform structure according to any one of claims 1 to 5, characterized in that: The width of the prefabricated board (1) is 1.8m-2.2m.

7. A subway platform structure according to any one of claims 1 to 5, characterized in that: The support frame (3) comprises a supporting portion (301), the supporting portion (301) being used to support the prefabricated plate (1), the supporting portion (301) being pre-buried with a sleeve (5), the prefabricated plate (1) being correspondingly provided with a through hole, the through hole and the sleeve (5) being connected via a screw (6) and a grouting material (7).

8. The structure of a subway platform according to claim 7, characterized in that: An anchor head (8) is arranged at the bottom end of the screw rod (6).

9. A subway platform structure according to any one of claims 1 to 5, characterized in that: The platform structure also comprises a rib beam (2), wherein the rib beam (2) is connected to the side surface of the prefabricated panel (1).

10. The structure of a subway platform according to claim 9, characterized in that: The two adjacent rib beams (2) are matched in a concave-convex manner.

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