A superstructure system for rail operating lines and its implementation method

Abstract

The present invention relates to the technical field of rail transit roof structures, and in particular to a roof structure system for rail transit operating lines and its implementation method. The roof structure system comprises prefabricated frame columns, prefabricated frame beams, and a prefabricated base plate, wherein the prefabricated frame columns and the prefabricated frame beams are connected and fixed by a connecting structure, the prefabricated base plate is connected and fixed to the prefabricated frame beams by a connecting structure, and a cast-in-place layer is cast above the prefabricated base plate. The advantages of the present invention include: reasonable structure, clear functions, strong operability, and novel design.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit superstructures, and in particular to a superstructure system applied to a rail operating line and an implementation method thereof. Background Art

[0002] With the recent development of cities, the existing surface lines of urban rail transit have impacted traffic on both sides of the lines, disrupting urban development. This necessitates the construction of reinforced concrete superstructures above the lines. However, this construction must not disrupt existing track operations, necessitating a rapidly constructed, prefabricated structural system. In railway stations, the renovation of older buildings requires the construction of on-line waiting halls, which also involve the construction of superstructures on operating lines.

[0003] Depending on the structural form of the cover, a steel structure or an assembled concrete structure can be used. When a steel structure is used, daily maintenance is required, including rust and corrosion prevention of the steel structure. Especially for urban rail transit, the maintenance unit under the cover is different from the user unit on the cover, making coordination difficult during operations. Therefore, assembled concrete structures have obvious advantages in subsequent operations. However, assembled concrete structures generally have small spans and require temporary construction supports. The temporary construction supports can only be removed after the poured concrete and prefabricated components form a composite component and are subjected to overall force. This temporary construction support affects the operation of the line, making it difficult to ensure that the rail line below continues to operate during construction.

[0004] Therefore, it is particularly important to develop a system and its implementation method that can be built quickly, avoid excessive maintenance work during the post-construction phase, avoid the need for temporary supports that affect line operations during the construction phase, and span a large span to meet railway limits. Summary of the Invention

[0005] The purpose of the present invention is to provide a superstructure system and implementation method for rail operating lines based on the above-mentioned deficiencies in the existing technology. Through a system consisting of prefabricated frame columns, prefabricated frame beams, and prefabricated base plates, the superstructure can be constructed above the rail operating line under the premise of temporary support from construction workers.

[0006] The purpose of the present invention is achieved by the following technical solutions:

[0007] A superstructure system applied to a rail operating line, characterized in that: the superstructure system includes prefabricated frame columns, prefabricated frame beams, and a prefabricated base plate, wherein the prefabricated frame columns and the prefabricated frame beams are connected and fixed by a connecting structure, the prefabricated base plate is connected and fixed to the prefabricated frame beams by a connecting structure, and a cast-in-place layer is cast above the prefabricated base plate.

[0008] The upper cover structure system further includes temporary columns, which are installed above the prefabricated frame columns. The temporary columns are connected to the prefabricated frame beams via inclined cables.

[0009] Embedded nuts are respectively provided at both ends of the bottom of the prefabricated frame beam and the prefabricated base plate. The prefabricated frame beam can be limited in position relative to the prefabricated frame column by connecting the limiting screws with the embedded nuts thereof. The prefabricated base plate can be limited in position relative to the prefabricated frame beam by connecting the limiting screws with the embedded nuts thereof.

[0010] The prefabricated frame columns are connected to the prefabricated frame beams by prefabricating slots at their column heads or by providing column angle codes.

[0011] The column head position of the prefabricated frame column is pre-embedded with a screw rod, and the column angle code is connected and fixed to the prefabricated frame column through the screw rod.

[0012] The prefabricated frame beam is connected to the prefabricated base plate by prefabricating ears on both sides of the beam body or arranging beam angle codes.

[0013] Screws are pre-embedded at both sides of the beam body of the prefabricated frame beam, and the beam angle brackets are connected and fixed to the prefabricated frame beam via the screws.

[0014] The prefabricated frame columns are connected to the site via guy ropes.

[0015] The prefabricated bottom plate is a prestressed hollow bottom plate.

[0016] An implementation method of the above-mentioned superstructure system applied to a rail operating line is characterized in that the implementation method comprises the following steps:

[0017] Prefabricated frame columns are erected on both sides of the line, and prefabricated frame beams are erected by setting column angle brackets at the column heads of the prefabricated frame columns, wherein the prefabricated frame beams are supported on the column angle brackets;

[0018] The prefabricated bottom plate is erected by arranging beam angle brackets on both sides of the beam body of the prefabricated frame beam, and the prefabricated bottom plate is supported on the prefabricated frame beam and the beam angle brackets;

[0019] Install limiting screws at the positions of the embedded nuts provided on the prefabricated frame beam and the prefabricated bottom plate respectively, so that both are limited in position;

[0020] Temporary columns are erected above the prefabricated frame columns and connected to the prefabricated frame beams via inclined cables, thereby completing the erection of the upper cover structure system;

[0021] Rebars are installed on the prefabricated base plate and a cast-in-place layer is poured, so that the prefabricated frame columns, the prefabricated frame beams and the prefabricated base plate form a composite component that is subjected to overall force, and then the temporary columns and their inclined cables are removed.

[0022] The advantages of the present invention are: reasonable structure, clear function, strong operability, novel design and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the facade structure of the present invention;

[0024] Figure 2 for Figure 1 AA section view;

[0025] Figure 3 This is the axonometric drawing of the center column angle code of the present invention;

[0026] Figure 4 This is an axonometric drawing of the slot-type prefabricated column capital in the present invention;

[0027] Figure 5 This is the axonometric drawing of the center beam angle code of the present invention;

[0028] Figure 6 This is a schematic structural diagram of the cantilevered prefabricated frame beam of the present invention;

[0029] Figure 7 for Figure 2 BB cross-sectional structure diagram. DETAILED DESCRIPTION

[0030] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:

[0031] like Figure 1-7 As shown in the figure, the marks 1-19 respectively represent: prefabricated frame column 1, prefabricated frame beam 2, column angle code 3, screw 4, guy rope 5, embedded nut 6, limit screw 7, prefabricated base plate 8, beam angle code 9, embedded screw 10, embedded nut 11, limit screw 12, prefabricated slotted column head 13, cantilever 14, temporary column 15, reserved steel bar 16, embedded lifting ring 17, inclined cable 18, welded lifting ring 19.

[0032] Example: The upper cover structure system applied to the rail operating line in this embodiment is mainly used for the situation of erecting a cover plate above the rail operating line. The system breaks the traditional method of setting up temporary support of prefabricated bottom plates and temporary support of prefabricated beams during the construction of prefabricated structures. At the same time, it can be combined with the use of prestressed hollow prefabricated bottom plates to achieve a larger span without temporary support, thereby preventing intrusion into the track limit.

[0033] Specifically, combined Figure 1 and Figure 2 As shown, the main body of the upper cover structure system applied to the rail operating line in this embodiment includes prefabricated frame columns 1, prefabricated frame beams 2 and prefabricated bottom plates 8.

[0034] Among them, the screw rod 4 is embedded in the column head position of the prefabricated frame column 1, and the screw rod 4 can be connected and fixed with the column angle code 3. Figure 3 As shown, the structure of the column angle bracket 3 includes a vertical connecting plate with connecting holes that match the screw rods 4 and a horizontal support plate arranged above the vertical connecting plate. The function of the horizontal support plate is to support the prefabricated frame beam 2. When in use, the screw rods 4 pre-embedded in the column head position of the prefabricated frame column 1 can be inserted into the connecting holes of the vertical connecting plate of the column angle bracket 3, thereby connecting the column angle bracket 3 to the prefabricated frame column 1, so that the column angle bracket 3 can effectively support the prefabricated frame beam 2. In order to ensure the supporting strength of the column angle bracket 3, an oblique stiffening plate is also provided between the vertical connecting plate and the horizontal support plate to further improve the integrity of the vertical connecting plate and the horizontal support plate, thereby ensuring the supporting effect on the prefabricated frame beam 2.

[0035] like Figure 7 As shown, screw rods 10 are embedded on both sides of the prefabricated frame beam 2, and the screw rods 10 can be connected and fixed with the beam angle brackets 9. Figure 5 As shown, the structure of the beam angle code 9 is similar to that of the column angle code 3, which includes a vertical connecting plate with connecting holes that match the screws 10 and a horizontal support plate. The function of the horizontal support plate is to support the prefabricated base plate 8, thereby building a column (prefabricated frame column 1) beam (prefabricated frame beam 2) plate (prefabricated base plate 8) system.

[0036] An embedded nut 6 is provided at the bottom of the prefabricated frame beam 2. By installing a limiting screw 7 adapted to the embedded nut 6 on site, the prefabricated frame beam 2 can be limited to prevent the prefabricated frame beam 2 from slipping and falling during construction. Specifically, Figure 1 As shown, the embedded nut 6 is embedded in the bottom end of the prefabricated frame beam 2 and is located on the periphery of the column angle code 3. The limiting screw 7 installed on the embedded nut 6 extends out of the bottom surface of the prefabricated frame beam 2. At this time, the prefabricated frame beam 2 is limited in position relative to the prefabricated frame column 1 by the limiting screw 7. That is, the design principle is to achieve the limitation by setting a limiting structure that can be compatible with the prefabricated frame column 1 or the column angle code 3 at the bottom of the prefabricated frame beam 2. Similarly, an embedded nut 11 is embedded in the bottom of the prefabricated base plate 8. By installing a limiting screw 12 that is compatible with the embedded nut 11 on site, the prefabricated base plate 8 can be limited in position relative to the prefabricated frame beam 2 to prevent the prefabricated base plate 8 from slipping and falling during construction.

[0037] For long-span beams, pre-embedded lifting rings 17 are embedded in the top of the precast frame beams 2. These lifting rings 17 can be connected to welded lifting rings 19 on temporary steel columns 15 via inclined cables 18, thus solving the problem of construction disturbance during long-span precast beam construction. The temporary steel columns 15 can be temporarily connected and fixed to the precast frame columns 1 using pre-reinforced steel bars 16 installed on the column heads.

[0038] When implemented, this embodiment includes the following steps:

[0039] 1) Prefabricated frame columns 1 are erected on both sides of the existing rail line. Prefabricated frame beams 2 are connected to the prefabricated frame columns 1 via column angle brackets 3. The column angle brackets 3 are connected to the prefabricated frame columns 1 via screws 4 pre-embedded in the column heads.

[0040] 2) The prefabricated bottom plate 8 is connected to the prefabricated frame beam 2 via the beam angle bracket 9. The beam angle bracket 9 is connected to the prefabricated frame beam 2 via the screw rod 10 pre-embedded in the prefabricated frame beam 2.

[0041] 3) The prefabricated frame column 1 is connected to the construction site via a guy rope 5 to ensure the stability of the prefabricated frame column 1 during construction.

[0042] 4) The limiting screw 7 is connected to the prefabricated frame beam 2 through the embedded nut 6, and the limiting rod 12 is connected to the prefabricated base plate 8 through the embedded nut 11.

[0043] 5) The temporary columns 15 are connected with the reserved steel bars 16 of the prefabricated frame columns 1, and the frame beam eyelets 17 are tied to the temporary columns 15 through inclined cables 18.

[0044] 6) After the system is installed, the upper reinforcement is installed on the top surface of the precast base plate 8 and the cast-in-place layer is poured, forming a composite component with the precast beams, slabs and columns to bear the load as a whole. The temporary columns 15, inclined cables 18 and guy ropes 5 are then removed.

[0045] In the specific implementation of this embodiment, in addition to using the column angle code 3 in the above embodiment, the following can also be used: Figure 4 The prefabricated slot-type column head 13 shown realizes the connection between the prefabricated frame column 1 and the prefabricated frame beam 2, that is, a slot that is compatible with the prefabricated frame beam 2 is set at the top of the prefabricated frame column 1, and the prefabricated frame beam 2 can be snapped into the slot at the top of the prefabricated frame column 1, thereby realizing quick connection and fixation between the two.

[0046] In addition to the beam angle code 9 in the above embodiment, the following Figure 6 The lugs 14 shown realize the connection between the prefabricated frame beam 2 and the prefabricated base plate 8, that is, outwardly cantilevered lugs 14 are respectively provided on both sides of the prefabricated frame beam 2, and the lugs 14 support the prefabricated base plate 8 together with the main body of the prefabricated frame beam 2.

[0047] Although the above embodiments have described in detail the concepts and embodiments of the present invention with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, so they are not described in detail here.

Claims

1. A roof structure system for a rail operating line, characterized by: The upper cover structure system includes prefabricated frame columns, prefabricated frame beams, and prefabricated base plates, wherein the prefabricated frame columns and the prefabricated frame beams are connected and fixed by a connecting structure, the prefabricated base plate is connected and fixed to the prefabricated frame beams by a connecting structure, and a cast-in-place layer is cast above the prefabricated base plate; embedded nuts are provided at both ends of the bottom of the prefabricated frame beams and the prefabricated base plate, and the prefabricated frame beams can achieve their limitation relative to the prefabricated frame columns by connecting limiting screws with their embedded nuts, and the prefabricated base plate can achieve their limitation relative to the prefabricated frame beams by connecting limiting screws with their embedded nuts; the prefabricated frame beams are connected to the prefabricated base plate by prefabricated ears on both sides of their beam bodies or by setting beam angle codes; screws are embedded at both sides of the beam body of the prefabricated frame beams, and the beam angle codes are connected and fixed to the prefabricated frame beams through the screws.

2. The upper cover structure system for a rail operating line according to claim 1, characterized in that: The upper cover structure system further includes temporary columns, which are installed above the prefabricated frame columns. The temporary columns are connected to the prefabricated bottom plate via inclined cables.

3. The roof structure system for a rail operating line according to claim 1, characterized in that: The prefabricated frame columns are connected to the prefabricated frame beams by prefabricating slots at their column heads or by providing column angle codes.

4. The roof structure system for a rail operating line according to claim 3, characterized in that: The column head position of the prefabricated frame column is pre-embedded with a screw rod, and the column angle code is connected and fixed to the prefabricated frame column through the screw rod.

5. The roof structure system for a rail operating line according to claim 1, characterized in that: The prefabricated frame columns are connected to the site via guy ropes.

6. The roof structure system for a rail operating line according to claim 1, characterized in that: The prefabricated bottom plate is a prestressed hollow bottom plate.

7. A method for implementing the superstructure system for a rail operating line according to any one of claims 1 to 6, characterized in that: The implementation method comprises the following steps: Prefabricated frame columns are erected on both sides of the line, and prefabricated frame beams are erected by setting column angle brackets at the column heads of the prefabricated frame columns, wherein the prefabricated frame beams are supported on the column angle brackets; The prefabricated bottom plate is erected by arranging beam angle brackets on both sides of the beam body of the prefabricated frame beam, and the prefabricated bottom plate is supported on the prefabricated frame beam and the beam angle brackets; Install limiting screws at the positions of the embedded nuts provided on the prefabricated frame beam and the prefabricated bottom plate respectively, so that both are limited in position; Erecting temporary columns above the prefabricated frame columns and connecting the temporary columns to the prefabricated base plate via inclined cables, thereby completing the erection of the upper cover structure system; Rebars are installed on the prefabricated base plate and a cast-in-place layer is poured, so that the prefabricated frame columns, the prefabricated frame beams and the prefabricated base plate form a composite component that is subjected to overall force, and then the temporary columns and their inclined cables are removed.

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