Assembled maintenance column, train maintenance platform and construction method thereof

Abstract

The present invention relates to an assembled maintenance column, comprising a prefabricated reinforced concrete column, a connecting member for connecting to an inspection track is embedded in the top of the column, and an assembly plate for assembling and connecting to the base layer of the inspection platform is embedded in the bottom of the column. It also relates to a train inspection platform and a construction method thereof, the platform comprises a base layer and two bearing column rows, each bearing column row comprises a plurality of bearing columns arranged in sequence along the longitudinal direction of the inspection track, the inspection track is installed on the two bearing column rows, at least part of the bearing columns adopt the above-mentioned assembled maintenance column, and each assembly plate is assembled and connected to the base layer respectively. The present invention adopts a fully prefabricated assembled maintenance column and assembles and connects it to the base layer of the inspection platform through an assembly plate, which is convenient for construction, can significantly shorten the construction period, and save engineering costs; it can completely solve the problem of poor cooperation between the track construction unit and the civil construction unit; the assembled maintenance column is prefabricated offline, which can ensure quality and facilitate standardized production.

Description

Technical Field

[0001] The invention relates to an assembled maintenance column, a train maintenance platform using the assembled maintenance column and a construction method of the train maintenance platform, which can be applied in the field of rail transportation engineering, and is particularly suitable for engineering involving train maintenance. Background Art

[0002] At present, rail transit construction is developing rapidly, and vehicle depot maintenance bases related to rail transit are also being built in large quantities. Vehicle comprehensive maintenance bases are mainly divided into two categories according to their functions: vehicle depots and parking lots (generally known as operation depots and maintenance depots), for vehicle maintenance and parking. There are column-type maintenance trenches in the depot, and each maintenance trench contains a large number of short columns to support the track and train loads; according to the needs of track installation, the cross-sectional size of the short column is 400×400mm and the height is about 1 meter.

[0003] According to the current construction technology, on-site molded cast-in-place short concrete columns are currently used. The construction period is long, the quality of on-site cast-in-place concrete is difficult to guarantee, and there is a large waste of materials. In addition, the concrete columns have been completed before laying the tracks. Due to the large number of errors in the plane and vertical positioning of the columns, the accuracy of rail installation is difficult to guarantee, and some columns need to be repaired or removed, which is a huge workload. Summary of the invention

[0004] The embodiments of the present invention relate to an assembled maintenance column, a train maintenance platform using the assembled maintenance column, and a construction method of the train maintenance platform, which can at least solve some of the defects of the prior art.

[0005] An embodiment of the present invention relates to an assembled maintenance column, including a column body, which is a prefabricated reinforced concrete part. A connecting component for connecting to an inspection rail is pre-embedded at the top of the column body, and an assembly plate for assembling and connecting to a base layer of an inspection platform is pre-embedded at the bottom of the column body.

[0006] As one of the embodiments, the assembly plate is provided with at least one assembly hole for the column foot bolt to pass through.

[0007] As one of the embodiments, the assembly plate includes two wing plate sections, which are arranged opposite to each other and extend out of the column respectively.

[0008] As one of the embodiments, the assembly plate is a steel plate.

[0009] As one of the embodiments, the column includes a top solid section and a hollow section with a hollow cavity located below the solid section, and the connecting member is pre-buried in the solid section.

[0010] As one of the embodiments, the column is a square column and each side edge thereof is chamfered.

[0011] An embodiment of the present invention also relates to a train maintenance platform, comprising a base layer, an inspection track and two rows of bearing columns, each row of bearing columns comprising a plurality of bearing columns arranged in sequence longitudinally along the inspection track, the inspection track being installed on the two rows of bearing columns, at least some of the bearing columns adopt the assembled inspection columns as described above, and each of the assembly plates is assembled and connected to the base layer respectively.

[0012] As one of the embodiments, at least one assembly hole is opened on the assembly plate, and column foot bolts are correspondingly pre-embedded on the base layer. The column foot bolts pass through the assembly holes one by one and are assembled and fixed to the assembly plates.

[0013] As one of the embodiments, a plurality of assembly grooves are opened on the base layer, the bearing columns are the same in number as the assembly grooves and are arranged one by one, and the bearing columns are inserted into the corresponding assembly grooves and consolidated by cast-in-place concrete.

[0014] The embodiment of the present invention also relates to a construction method of the train maintenance platform as described above, comprising:

[0015] Carry out prefabrication of various assembled maintenance columns;

[0016] Cast-in-place foundation layer;

[0017] Install each bearing column on the foundation layer, install the inspection track, and adjust the track plane positioning and elevation;

[0018] Concrete is poured into each assembly groove to fix each load-bearing column on the foundation layer.

[0019] The embodiments of the present invention have at least the following beneficial effects:

[0020] In the present invention, fully prefabricated assembled inspection columns are adopted and an assembly plate is embedded in the bottom of the assembled inspection columns. The assembly plate is assembled and connected with the base layer of the inspection platform. The construction is relatively convenient and can significantly shorten the construction period. The templates are used less or basically no templates are needed, thus saving engineering costs. The problem of poor coordination between the track construction unit and the civil construction unit can be completely solved. The assembled inspection columns are prefabricated offline, which can ensure quality and facilitate standardized production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1A schematic diagram of the structure of an assembled maintenance column provided in an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the top view of the assembled maintenance column provided in an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the structure of a train maintenance platform provided by an embodiment of the present invention;

[0025] Figure 4 for Figure 3 Section view along AA. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1

[0028] like Figure 1 and Figure 2 An embodiment of the present invention provides an assembled maintenance column 1, including a column body 11, which is a prefabricated reinforced concrete part. A connecting member 13 for connecting to a maintenance track 3 is pre-embedded at the top of the column body 11, and an assembly plate 12 for assembling and connecting to a base layer 2 of a maintenance platform is pre-embedded at the bottom of the column body 11.

[0029] The column 11 may be in the shape of a square column, a round column, etc. In one embodiment, the column 11 is a square column and each side edge thereof is chamfered, and the cross section of the column 11 is small and beautiful.

[0030] The assembled maintenance column 1 is mainly used in the vehicle comprehensive maintenance base in the rail transit project to support the maintenance track 3 and the train load. The connecting member 13 arranged on the top of the column 11 is mainly used to connect with the maintenance track 3. The connecting member 13 can be a plastic sleeve pre-buried in the bearing column, depending on the specific structure of the track.

[0031] In one embodiment, the assembly plate 12 is disposed at the bottom end of the column 11, so as to be directly connected to the base layer 2. For the assembly structure between the assembly plate 12 and the base layer 2, for example, a steel plate is reserved on the base layer 2, the assembly plate 12 is also made of a steel plate and is welded to the reserved steel plate on the base layer 2, or an inverted L-shaped pressing plate or a steel buckle is disposed on the top of the base layer 2, the assembly plate 12 is horizontally inserted in the pressing groove surrounded by the inverted L-shaped pressing plate or clamped by a steel buckle, and other possible implementation methods.

[0032] In a preferred embodiment, a threaded assembly structure is used between the assembly plate 12 and the base layer 2. Specifically, Figure 2 , the assembly plate 12 is provided with at least one assembly hole 121 for the column foot bolt 21 to pass through; correspondingly, the column foot bolt 21 can be pre-buried on the base layer 2. During assembly, after the column foot bolt 21 on the base layer 2 passes through the assembly hole 121 on the assembly plate 12, the assembly plate 12 can be fixed to the base layer 2 by tightening the nut, thus achieving the fixed assembly between the above-mentioned assembled maintenance column 1 and the base layer 2. Obviously, by providing multiple assembly holes 121 on the assembly plate 12 and correspondingly providing multiple column foot bolts 21 on the base layer 2, the strength and stability of the assembly structure between the assembly plate 12 and the base layer 2 can be improved.

[0033] More preferably, if Figure 2 and Figure 4 The assembly plate 12 includes two wing plate sections, which are arranged opposite to each other and extend out of the column 11 respectively, which can further improve the assembly structural strength and stability between the assembled maintenance column 1 and the base layer 2, so that the coordinated force-bearing performance between the assembled maintenance column 1 and the base layer 2 is better. In particular, during installation, the arrangement direction of the two wing plate sections is parallel to the length direction of the maintenance track 3. When the maintenance track 3 transmits the friction force of the rail vehicle it bears to the assembled maintenance column 1 below, the assembled maintenance column 1 has a stronger ability to withstand these forces.

[0034] It can be understood that when the above-mentioned assembly plate 12 is made of steel plate, it has better strength and rigidity, longer service life, and higher strength of the connection structure between the base layer 2, which can further improve the stability and reliability of the assembly structure between the assembled maintenance column 1 and the base layer 2.

[0035] More preferably, if Figure 1 and Figure 2 The assembled maintenance column 1 provided in this embodiment can be a hollow structure, which can significantly reduce the deadweight of the assembled maintenance column 1 while ensuring the structural strength, and is convenient for transportation, installation and pipeline passage. Figure 1The column 11 includes a top solid section and a hollow section with a hollow cavity 15 located below the solid section. The above-mentioned connecting member 13 is arranged on the solid section. The hollow cavity 15 of the hollow section can, for example, be through to the bottom of the column 11. In the embodiment in which the assembled maintenance column 1 is installed in the assembly groove 22 of the foundation layer 2 of the maintenance platform, when pouring concrete into the assembly groove 22, part of the concrete can enter the hollow cavity 15 of the column 11, thereby improving the stability and reliability of the consolidation structure between the column 11 and the foundation layer 2; or, a positioning pile can be correspondingly arranged at the bottom of the assembly groove 22, and the hollow cavity 15 and the positioning pile are mutually inserted to facilitate the positioning of the column 11, ensure the accuracy of the assembly structure, and at the same time improve the stability and reliability of the consolidation structure between the column 11 and the foundation layer 2. Correspondingly, a wiring pipe 14 can be pre-buried on the column 11, and the wiring pipe 14 is connected to the above-mentioned hollow cavity 15.

[0036] In this embodiment, a fully prefabricated assembled maintenance column 1 is used and an assembly plate 12 for assembly and connection with the maintenance platform foundation layer 2 is pre-buried at the bottom of the assembled maintenance column 1. The construction is relatively convenient and can significantly shorten the construction period. The template is used less or basically no template is required, saving engineering costs. The assembled maintenance column 1 is prefabricated offline to ensure quality and facilitate standardized production.

[0037] Embodiment 2

[0038] like Figure 3 and Figure 4 An embodiment of the present invention provides a train maintenance platform, including a base layer 2, an inspection track 3 and two bearing column rows, each bearing column row including a plurality of bearing columns arranged in sequence along the longitudinal direction of the inspection track 3, the inspection track 3 being installed on the two bearing column rows, at least part of the bearing columns adopt the assembled inspection columns 1 provided in the above-mentioned embodiment 1, and each of the assembly plates 12 is assembled and connected to the base layer 2 respectively.

[0039] In the present embodiment, a fully prefabricated assembled inspection column 1 is adopted and an assembly plate 12 is embedded in the bottom of the assembled inspection column 1. The assembly plate 12 is assembled and connected with the base layer 2 of the inspection platform. The construction is relatively convenient and can significantly shorten the construction period. The template is used less or basically no template is required, thus saving engineering costs. The problem of poor coordination between the track construction unit and the civil construction unit can be completely solved. The assembled inspection column 1 is prefabricated offline to ensure quality and facilitate standardized production.

[0040] The foundation layer 2 is preferably a concrete foundation layer 2 , and more preferably a reinforced concrete foundation layer 2 .

[0041] Each bearing column can adopt the above-mentioned assembled maintenance column 1. The assembly structure between the assembled maintenance column 1 and the base layer 2 has been described in the above-mentioned embodiment 1; as a preferred embodiment thereof, at least one assembly hole 121 is opened on the assembly plate 12, and column foot bolts 21 are correspondingly pre-embedded on the base layer 2, and each column foot bolt 21 passes through each assembly hole 121 one by one and is assembled and fixed with each assembly plate 12.

[0042] The above-mentioned assembled maintenance column 1 can be directly assembled on the top of the foundation layer 2. In a preferred embodiment, Figure 4 , a plurality of assembly grooves 22 are provided on the foundation layer 2, the bearing columns are the same in number as the assembly grooves 22 and are arranged one by one, the bearing columns are inserted into the corresponding assembly grooves 22 and are fixed by cast-in-place concrete 4. Based on this structure, in addition to being fixedly connected to the assembly plate 12 by the column foot bolts 21 mentioned above, the assembled maintenance column 1 and the foundation layer 2 are also fixed by cast-in-place concrete 4. The multiple connection structures can significantly improve the installation structural strength and reliability of the assembled maintenance column 1 on the foundation layer 2, and the coordinated force bearing capacity between each bearing column and the foundation layer 2 is better; moreover, this implementation method can make the foundation layer 2 and the retaining wall integrally cast, the construction period is significantly shortened, and the construction quality is improved.

[0043] Embodiment 3

[0044] The embodiment of the present invention provides a construction method of the above-mentioned train maintenance platform, comprising:

[0045] (1) Prefabrication of each assembled maintenance column 1;

[0046] (2) Cast-in-place foundation layer 2;

[0047] (3) Install each bearing column on the foundation layer 2, install the inspection track 3, and adjust the track plane positioning and elevation;

[0048] (4) Concrete is poured into each assembly groove 22 to fix each bearing column on the foundation layer 2.

[0049] The prefabrication of the bearing columns and the pouring of the foundation layer 2 can be carried out simultaneously.

[0050] In the above step (3), the installation of the inspection track 3 can be achieved by installing a track installation steel frame on the foundation layer 2 in one embodiment. In another embodiment, among the bearing columns on the above foundation layer 2, some are prefabricated assembled inspection columns 1, and a few are cast-in-place columns. The installation of the inspection track 3 is achieved by pre-casting a plurality of cast-in-place bearing columns. When the remaining prefabricated assembled inspection columns 1 are installed, these assembled inspection columns 1 are first hoisted into the corresponding assembly grooves 22, and then connected to the inspection track 3 through the connecting members 13 at the top of the assembled inspection columns 1, and then concrete is poured in the assembly grooves 22 to fix each assembled inspection column 1 on the foundation layer 2. In this embodiment, since there are only a small number of cast-in-place bearing columns, the dimensional accuracy is easy to ensure, so that the installation accuracy of the inspection track 3 can be ensured, and the force is synergistically borne by a plurality of cast-in-place bearing columns and prefabricated bearing columns. Since the cast-in-place bearing columns can be integrally formed with the foundation layer 2, the structural strength is high, and thus the load bearing capacity of the train inspection platform can be effectively improved.

[0051] In addition, in the installation of the above-mentioned prefabricated assembled inspection column 1, a supporting nut can be screwed on the column base bolt 21, and the assembly plate 12 of the assembled inspection column 1 can be supported on the supporting nut. The installation height of the assembled inspection column 1 can be adjusted by adjusting the position of the supporting nut, and then the assembly plate 12 and the column base bolt 21 are fixed by the locking nut. This embodiment not only facilitates the installation of the prefabricated assembled inspection column 1, but also can effectively improve the installation accuracy of the inspection rail 3.

[0052] In addition, the prefabrication method of the above-mentioned assembled maintenance column 1 may include the following steps:

[0053] ① Tie the steel bars (longitudinal bars and stirrups) in the column;

[0054] ② Tie and fix the plastic sleeve 13 pre-buried at the top of the column and the PVC pipe 14 pre-buried in the middle to the steel bars in the column;

[0055] ③Put the tied steel cage into the prefabricated formwork slot;

[0056] ④ Pour high-grade concrete into the formwork groove;

[0057] ⑤ Make hollow prefabricated assembled maintenance columns 1 through high-speed centrifugal technology;

[0058] ⑥ Through autoclave curing, the prefabricated assembled maintenance column 1 is quickly formed into a finished product.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A train maintenance platform, comprising a base layer, a maintenance track and two bearing column rows, each bearing column row comprising a plurality of bearing columns sequentially arranged along the longitudinal direction of the maintenance track, the maintenance track being mounted on the two bearing column rows, characterized in that: Some of the load-bearing columns are fabricated maintenance columns, and the remaining load-bearing columns are cast-in-place columns; The assembled maintenance column comprises a column body, which is a reinforced concrete prefabricated part, a connecting member for connecting with the maintenance track is pre-embedded at the top of the column body, and an assembly plate for assembly connection with the foundation layer is pre-embedded at the bottom of the column body; The column includes a top solid section and a hollow section with a hollow cavity located below the solid section, and the connecting member is pre-buried in the solid section; A plurality of assembly grooves are provided on the base layer, the number of the columns is the same as the number of the assembly grooves and they are arranged one-to-one, the columns are inserted into the corresponding assembly grooves and are solidified by cast-in-place concrete; Among them, each of the assembled maintenance columns is assembled with the maintenance rail after the maintenance rail is pre-installed on the cast-in-place column, and is consolidated by the cast-in-place concrete in the assembly groove after being assembled with the maintenance rail; when pouring concrete into the assembly groove, the concrete enters the hollow cavity together.

2. The train maintenance platform according to claim 1, characterized in that: At least one assembly hole is formed on the assembly plate, and column foot bolts are correspondingly pre-embedded on the base layer. The column foot bolts pass through the assembly holes one by one and are assembled and fixed to the assembly plates.

3. The train maintenance platform according to claim 1, characterized in that: The assembly plate comprises two wing plate sections, which are arranged opposite to each other and extend out of the column respectively.

4. The train maintenance platform according to claim 1, characterized in that: The assembly plate is a steel plate.

5. The train maintenance platform according to claim 1, characterized in that: The column is a square column and each side edge thereof is chamfered.

6. The construction method of the train maintenance platform according to claim 1, characterized in that: include: Carry out prefabrication of various assembled maintenance columns; Cast-in-situ foundation layers and cast-in-situ columns; Installing the inspection rails on the cast-in-place columns, and then assembling the assembled inspection columns and the inspection rails together; Concrete is poured into each assembly groove to fix each assembled maintenance column on the foundation layer.

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