A semi prefabricated high speed maglev track beam and its assembly method

Abstract

The present invention discloses a semi - prefabricated high - speed maglev track beam and its assembly method, which includes a propulsion groove and a suspension groove. It also includes a bottom plate extending along the track direction, and two rows of concrete precast elements assembled on the bottom plate and mirror - distributed axially along the bottom plate. A propulsion groove is formed between the two rows of concrete precast elements, and suspension grooves are provided on the concrete precast elements; along the axial direction of the bottom plate, adjacent two concrete precast elements are spliced with each other; three rows of inspection holes are opened on the bottom plate, and each row of inspection holes extends along the axial direction of the bottom plate; two of the three rows of inspection holes are respectively located below the two rows of concrete precast elements, and the other row of inspection holes is located at the bottom of the propulsion groove; channels which are directly opposite and communicated with the corresponding inspection holes are opened at the bottom of the suspension grooves. The present invention can solve the problems in the prior art that the construction period of the cast - in - place structure of the maglev track beam is too long, and the precision of the prefabricated structure is low and the mechanical continuity is poor.

Description

Technical Field

[0001] The present invention relates to the technical field of maglev track, and particularly relates to a semi - prefabricated high - speed maglev track beam and an assembly method thereof. Background Art

[0002] The track beam is an important part of the maglev track, which is a beam - type or plate - type structure with a track functional surface, capable of bearing the train load and transferring it to the supporting structure. That is to say, the maglev track beam has the functions of the beam and the rail in traditional railways. Compared with the operation of traditional railway trains, maglev trains have higher requirements for the accuracy of the track beam.

[0003] In the field of high - speed maglev, the distance between the train magnets and the magnets on the track beam directly affects the change of magnetic buoyancy. In order to ensure the smooth development of lift and resistance when the vehicle takes off and lands, and at the same time ensure the riding comfort of the vehicle in the middle section of the line, very strict requirements are put forward for the construction accuracy of the traditional maglev track beam, making it difficult for the traditional in - situ casting construction process to meet such accuracy requirements. In the prior art, for the track beam of the maglev track, a set of large - scale magnet modules are generally assembled inside it to simultaneously provide the forward driving force and the lift required for suspension for the vehicle above; this maglev method has the disadvantages of too large volume of the magnet modules, very difficult manufacturing and installation; in addition, with the continuous in - depth research on the ultra - high - speed maglev track technology, in some non - railway transportation fields, the application of ultra - high - speed maglev technology has gradually been considered, which requires the construction of test - section tracks for a large number of engineering tests and verifications; however, the existing maglev track beams cannot install the magnet modules of ultra - high - speed maglev technology, so they are not suitable for the use of test - section tracks of ultra - high - speed maglev.

[0004] Based on the above problems, the applicant first proposed a brand - new maglev track beam structure and previously applied for patents such as "Track Beam Structure for Ultra - High - Speed Maglev Track Test Section and Its Forming Method" and "An Assembled Maglev Track Beam". However, with the continuous in - depth research, the applicant found that the in - situ casting structure of the previously applied patents was designed for construction convenience and had the defect of too long construction period; while the base structure of the previously applied assembled structure had defects, which was prone to insufficient structural stability, and also had defects such as too small component segmentation, difficult to guarantee assembly accuracy and poor mechanical continuity. Therefore, it is necessary to continue to improve and optimize the construction technology of high - speed maglev track beams. Summary of the Invention

[0005] The present invention provides a semi - prefabricated high - speed maglev track beam and an assembly method thereof to solve the problems of too long construction period of the in - situ casting structure of the maglev track beam, low accuracy and poor mechanical continuity of the assembled structure in the prior art.

[0006] The present invention is realized through the following technical solutions:

[0007] A semi-assembled high-speed maglev track beam comprises a propulsion groove, a suspension groove, a bottom plate extending in the track direction, and two rows of concrete precast parts assembled on the bottom plate and mirror-distributed along the axial direction of the bottom plate, wherein the propulsion groove is formed between the two rows of concrete precast parts, and the suspension groove is arranged on the concrete precast parts; along the axial direction of the bottom plate, two adjacent concrete precast parts are spliced ​​with each other;

[0008] Three rows of inspection holes are provided on the bottom plate, and each row of inspection holes extends axially along the bottom plate; two rows of inspection holes are respectively located below two rows of concrete prefabricated parts, and the other row of inspection holes is located at the bottom of the advancement groove; a channel is provided at the bottom of the suspension groove, which is opposite to and connected to the corresponding inspection holes.

[0009] Aiming at the problems of long construction period of cast-in-place structure of magnetic levitation track beam, low precision of assembled structure and poor mechanical continuity in the prior art, the present invention first proposes a semi-assembled high-speed magnetic levitation track beam, in which the propulsion groove and suspension groove are both existing structures required by the magnetic levitation track beam. The bottom plate extends along the track direction. It should be noted that the axial direction in this application refers to the direction extending along the track; the transverse direction in this application refers to the direction perpendicular to the track extension in the horizontal plane. In this application, the concrete precast is U-shaped, the suspension groove is directly precast on the concrete precast, and the propulsion groove is between the two rows of concrete precast. The concrete precast is assembled and connected with the bottom plate, and the adjacent concrete precasts are spliced ​​along the axial direction. A row of inspection holes is opened below the two rows of concrete precast, and a row of inspection holes is also opened at the bottom of the propulsion groove, so a total of three rows of inspection holes are opened on the bottom plate; and because the concrete precast is U-shaped in this application, it is also necessary to open a channel at the bottom of the suspension groove to connect the inspection holes below the channel.

[0010] The bottom plate in this application can be cast on site and the concrete prefabricated parts can be prefabricated, so this application belongs to a semi-assembled structure; compared with the fully cast-in-place construction process in the prior art, it can significantly reduce the difficulty of on-site operations and shorten the construction period; compared with the fully assembled structure in the prior art, this application has only one prefabricated component, namely the concrete prefabricated part, which is conducive to reducing the difficulty of assembly, improving assembly accuracy, and thus improving the mechanical continuity of the track beam. In addition, this application optimizes the bottom structure, and the bottom plate is in the shape of a flat plate, which can reduce the difficulty of setting up the template on site and facilitate rapid casting and molding on site.

[0011] Furthermore, an assembly block is fixed to the bottom of the precast concrete part, and an assembly groove matching the assembly block is provided on the top surface of the bottom plate; the assembly block is located below the suspension groove, and the assembly block is detachably connected to the assembly groove.

[0012] When it is necessary to assemble precast concrete components, lift them above the bottom plate, align the assembly blocks with the assembly grooves, lower the precast concrete components, and then connect the assembly blocks and the assembly grooves.

[0013] Further, a number of first connection holes penetrating through to the bottom of the assembly block are provided at the bottom of the suspension groove, and first internal thread sleeves corresponding to the first connection holes one by one are embedded at the bottom of the assembly groove; the assembly block and the assembly groove are connected by first bolts matching the first internal thread sleeves.

[0014] In this solution, the first connection holes penetrate through the precast concrete component and the assembly block in sequence from the bottom of the suspension groove; when the assembly block is located in the assembly groove, each first connection hole is aligned with a first internal thread sleeve, and a first bolt is screwed into it and tightened, so as to lock the assembly block longitudinally and realize the assembly between the precast concrete component and the bottom plate.

[0015] Further, cushion blocks are also included on the lateral sides of the assembly block, and the cushion blocks are detachably connected to the assembly block and / or the precast concrete component; the bottom surface height of the cushion blocks is equal to or lower than the bottom surface height of the assembly block.

[0016] The precast concrete component is the core part of the high-speed maglev track beam of this application. Its end face has the need to be assembled with other precast concrete components, and its side may have the need to install other components in the later stage. Therefore, during the transportation of the precast and formed components, it is advisable to place them vertically with the bottom facing down. However, the bottom of the precast concrete component in this application has assembly blocks, and the assembly blocks are extremely easy to be worn during transportation, and in severe cases, it even interferes with the on-site assembly operation. For this reason, this solution also sets cushion blocks on the lateral sides of the assembly block, and temporarily connects the cushion blocks to the assembly block and / or the precast concrete component; since the bottom surface height of the cushion blocks is equal to or lower than the bottom surface height of the assembly block, the assembly blocks can be protected by the cushion blocks during vertical transportation, reducing the wear degree of the assembly blocks and ensuring the rapid completion of on-site assembly.

[0017] Further, second internal thread sleeves are embedded on both lateral sides of the assembly block, and second connection holes matching the second internal thread sleeves are provided on the cushion blocks; the cushion blocks and the assembly block are connected by second bolts matching the second internal thread sleeves.

[0018] This solution realizes the detachable connection between the cushion block and the assembly block through the second bolts. When the cushion blocks are needed, the second bolts are screwed into the second connection holes until they completely enter the second internal thread sleeves, and then the second bolts are tightened; when the cushion blocks are not needed, the second bolts are disassembled.

[0019] Further, third connection holes are preset on both lateral sides of the bottom plate. The third connection holes communicate with the assembly groove and are used for the second bolts to pass through. When the assembly block is located in the assembly groove, the third connection holes are aligned with the second internal thread sleeves.

[0020] During on-site assembly of this solution, the second bolts previously removed from the cushion blocks can be retained in place. After the assembly blocks enter the assembly grooves, the second bolts are screwed into the second internal thread sleeves in the same-side direction from the third connection holes on both sides of the bottom plate, and the second bolts are tightened again. Then, the assembly blocks are locked laterally. By reusing the second bolts and the second internal thread sleeves, the assembly stability between the precast concrete components and the bottom plate can be further improved.

[0021] Further, a plurality of grouting channels are included inside the assembly block. The grouting channels correspond to the first connection holes one by one. One end of the grouting channel communicates with the inside of the second internal thread sleeve, and the other end communicates with the corresponding first connection hole.

[0022] In this solution, the communication between the second internal thread sleeves and the first connection holes is realized through a plurality of grouting channels. Before screwing the second bolts into the third connection holes, grouting can be first carried out through the third connection holes, so that the concrete is extruded into the second internal thread sleeves, then enters the first connection holes through the grouting channels, and then the second bolts are immediately installed. After the concrete solidifies, the first bolts and the second bolts can be consolidated simultaneously through one grouting operation, which further improves the structural stability and mechanical continuity of this application.

[0023] Further, the top of the precast concrete component has a positioning surface, and the positioning surface is located on the side of the suspension groove facing the lateral outside of the bottom plate. Along the axial direction of the bottom plate, a positioning groove is opened at one end of the positioning surface, and a positioning protrusion is provided at the other end. The positioning groove and the positioning protrusion match each other.

[0024] Between two adjacent precast concrete components, the assembly is realized by inserting the positioning protrusion into the positioning groove. Both the positioning groove and the positioning protrusion are provided on the top surface, which can ensure that the hoisting and assembly of this application are not interfered. In addition, those skilled in the art should understand that the top surface of the maglev track beam has multiple surfaces. In this application, one surface located on the side of the suspension groove facing the lateral outside of the bottom plate is used as the positioning surface. There is no need to install the upper track on the top surface located outside the suspension groove. Therefore, using this side surface as the positioning surface can avoid interfering with the subsequent track construction.

[0025] An assembly method for a semi-precast high-speed maglev track beam includes: casting the bottom plate in situ; hoisting each precast concrete component in sequence, assembling the precast concrete component onto the bottom plate, and splicing two adjacent precast concrete components.

[0026] Further, the method for assembling the concrete precast member onto the bottom plate includes:

[0027] When the concrete precast member leaves the factory, cushion blocks are connected to the lateral sides of the assembly blocks at the bottom, and then it is transported to the construction site.

[0028] At the construction site, the concrete precast member is lifted until the cushion blocks are separated from the ground, and then the cushion blocks are disassembled.

[0029] The assembly block is lowered into the corresponding assembly groove on the top surface of the bottom plate.

[0030] A first bolt is screwed into the first connection hole in the suspension groove until the first bolt enters the first internal thread sleeve embedded at the bottom of the assembly groove, and then the first bolt is tightened.

[0031] A grouting pipe is inserted into the third connection hole on the outside of the bottom plate and into the second internal thread sleeve on the side of the assembly block. The end of the third connection hole is blocked, and concrete is injected through the grouting pipe until the grouting pressure reaches the preset pressure.

[0032] The blockage of the end of the third connection hole is removed, and a second bolt is screwed into the third connection hole until the second bolt enters the second internal thread sleeve, and then the second bolt is tightened.

[0033] Wherein, the preset pressure can be adaptively set according to the specific quantity, length, etc. of the grouting channels, with the preference of ensuring that the concrete fully enters each grouting channel as much as possible within the internal pressure bearing range of the assembly block.

[0034] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0035] 1. The semi - prefabricated high - speed maglev track beam and its assembly method of the present invention can significantly reduce the on - site operation difficulty and shorten the construction period.

[0036] 2. The semi - prefabricated high - speed maglev track beam and its assembly method of the present invention are beneficial to reducing the assembly difficulty, improving the assembly accuracy, and further improving the mechanical continuity performance of the track beam.

[0037] 3. The semi - prefabricated high - speed maglev track beam and its assembly method of the present invention optimize the bottom structure of the split - type maglev track beam. The bottom plate is in a flat plate shape, which can reduce the difficulty of setting up the formwork on site and facilitate rapid casting on site.

[0038] 4. The semi - prefabricated high - speed maglev track beam and its assembly method of the present invention can protect the assembly block through the cushion block during the vertical transportation process, reduce the wear degree of the assembly block, and ensure rapid on - site assembly.

[0039] 5. The semi - prefabricated high - speed maglev track beam and its assembly method of the present invention can further improve the assembly stability between the concrete precast member and the bottom plate by reusing the second bolt and the second internal - thread sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not limit the embodiments of the present invention. In the drawings:

[0041] Figure 1 is a schematic structural diagram of a specific embodiment of the present invention;

[0042] Figure 2 is a schematic structural diagram of the bottom plate in a specific embodiment of the present invention;

[0043] Figure 3 is a transverse cross - sectional view passing through the inspection hole in a specific embodiment of the present invention;

[0044] Figure 4 is a transverse cross - sectional view passing through the assembly groove in a specific embodiment of the present invention;

[0045] Figure 5 is a schematic structural diagram of the concrete precast member in a specific embodiment of the present invention.

[0046] Marks in the drawings and corresponding component names:

[0047] 1 - bottom plate, 2 - inspection hole, 3 - concrete precast member, 4 - propulsion groove, 5 - suspension groove, 6 - channel, 7 - assembly block, 8 - assembly groove, 9 - first internal - thread sleeve, 10 - first bolt, 11 - cushion block, 12 - second internal - thread sleeve, 13 - second bolt, 14 - third connection hole, 15 - grouting channel, 16 - positioning surface, 17 - positioning groove, 18 - positioning protrusion, 19 - first connection hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] To make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the embodiments and the drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and do not limit the present invention. In the description of this application, it should be understood that orientation or positional relationships indicated by terms such as "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as limiting the protection scope of this application.

[0049] Embodiment 1:

[0050] like Figures 1 to 3 A semi-assembled high-speed maglev track beam is shown, comprising a propulsion groove 4, a suspension groove 5, a bottom plate 1 extending along the track direction, and two rows of precast concrete parts 3 assembled on the bottom plate 1 and distributed in a mirror image along the axial direction of the bottom plate 1, wherein the propulsion groove 4 is formed between the two rows of precast concrete parts 3, and the suspension groove 5 is arranged on the precast concrete parts 3; along the axial direction of the bottom plate 1, two adjacent precast concrete parts 3 are spliced ​​with each other;

[0051] Three rows of inspection holes 2 are provided on the bottom plate 1, and each row of inspection holes 2 extends axially along the bottom plate 1; two rows of inspection holes 2 are respectively located below two rows of precast concrete parts 3, and the other row of inspection holes 2 is located at the bottom of the advancement groove 4; a channel 6 is provided at the bottom of the suspension groove 5, which is opposite to and connected to the corresponding inspection holes 2.

[0052] In a more preferred embodiment, the precast concrete element 3 is as follows Figure 5 As shown, a positioning surface 16 is provided on the top thereof, and the positioning surface 16 is located on one side of the suspension groove 5 toward the transverse outer side of the bottom plate 1; along the axial direction of the bottom plate 1, a positioning groove 17 is provided at one end of the positioning surface 16, and a positioning protrusion 18 is provided at the other end, and the positioning groove 17 and the positioning protrusion 18 match each other.

[0053] Embodiment 2:

[0054] A semi-assembled high-speed maglev track beam, based on embodiment 1, as Figures 1 to 4 As shown, an assembly block 7 is fixed to the bottom of the concrete prefabricated part 3, and an assembly groove 8 matching the assembly block 7 is provided on the top surface of the bottom plate 1; the assembly block 7 is located below the suspension groove 5, and the assembly block 7 is detachably connected to the assembly groove 8. In this embodiment, the assembly block 7 and the assembly groove 8 are both square.

[0055] The assembly groove 8 and the inspection hole 2 in this embodiment are arranged axially staggered on the surface of the bottom plate 1 without interfering with each other.

[0056] It should be noted that in Figure 4 Two prefabricated concrete parts 3 are shown in FIG. 1 , wherein the prefabricated concrete part 3 on the left has been assembled with the base plate 1 , and the prefabricated concrete part 3 on the right has not been assembled yet.

[0057] The bottom of the suspension groove 5 is provided with a plurality of first connection holes 19 penetrating to the bottom of the assembly block 7, and the bottom of the assembly groove 8 is pre-embedded with first internally threaded sleeves 9 corresponding to the first connection holes 19 one by one; the assembly block 7 is connected to the assembly groove 8 by a first bolt 10 matching the first internally threaded sleeve 9.

[0058] It further includes cushion blocks 11 located on the lateral two sides of the assembly block 7. The cushion blocks 11 are detachably connected to the assembly block 7 and / or the precast concrete member 3; the bottom surface height of the cushion blocks 11 is lower than the bottom surface height of the assembly block 7.

[0059] Second internal thread sleeves 12 are pre-embedded on the lateral two sides of the assembly block 7. Second connection holes matching the second internal thread sleeves 12 are provided on the cushion blocks 11; the cushion blocks 11 and the assembly block 7 are connected by second bolts 13 matching the second internal thread sleeves 12.

[0060] Third connection holes 14 are preset on the lateral two sides of the bottom plate 1. The third connection holes 14 communicate with the assembly groove 8 and are used for the second bolts 13 to pass through; when the assembly block 7 is located in the assembly groove 8, the third connection holes 14 are aligned with the second internal thread sleeves 12.

[0061] It further includes a number of grouting channels 15 located inside the assembly block 7. The grouting channels 15 correspond to the first connection holes 19 one by one; one end of the grouting channel 15 communicates with the inside of the second internal thread sleeve 12, and the other end communicates with the corresponding first connection hole 19.

[0062] Embodiment 3:

[0063] An assembling method for a semi-precast high-speed maglev track beam as described in Embodiment 1 or 2 includes the following steps:

[0064] Cast the bottom plate 1 in situ, obtain the assembly groove 8 and the third connection holes 14 through formwork arrangement, and pre-embed the first internal thread sleeves 9;

[0065] Lift each precast concrete member 3 in sequence, assemble the precast concrete member 3 onto the bottom plate 1, and make two adjacent precast concrete members 3 spliced with each other.

[0066] In this embodiment, the method for assembling the precast concrete member 3 onto the bottom plate 1 includes:

[0067] When the precast concrete member 3 is formed and leaves the factory, cushion blocks 11 are connected to the lateral two sides of the assembly block 7 through the second bolts 13 and transported to the operation site;

[0068] Lift the precast concrete member 3 at the operation site until the cushion blocks 11 are separated from the ground, disassemble the second bolts 13 for standby, and the cushion blocks 11 can be recycled;

[0069] Lower the assembly block 7 to the corresponding assembly groove 8 on the top surface of the bottom plate 1 by means of a crane; during the lowering process, if there is a precast concrete member 3 that has been assembled and positioned beside the current precast concrete member 3, then make the positioning protrusion 18 of the current precast concrete member 3 enter the positioning groove 17 of the precast concrete member 3 that has been assembled and positioned beside it, or, make the positioning groove 17 of the current precast concrete member 3 gradually sleeve outside the positioning protrusion 18 of the precast concrete member 3 that has been assembled and positioned beside it;

[0070] The worker enters the suspension groove 5 and screws the first bolt 10 into the first connection hole 19 in the suspension groove 5 until the first bolt 10 enters the first internal thread sleeve 9 embedded at the bottom of the assembly groove 8, and fasten the first bolt 10 with a nut or a cap nut;

[0071] Insert a grouting pipe into the third connection hole 14 on the outside of the bottom plate 1 until it reaches the second internal thread sleeve 12 on the side of the assembly block 7; on the premise of not interfering with the normal operation of the grouting pipe, block the outer end of the third connection hole 14 with a plug, and inject concrete through the grouting pipe until the grouting pressure reaches the preset pressure;

[0072] Remove the blockage of the outer end of the third connection hole 14, and screw the second bolt 13 that was disassembled and reserved before into the third connection hole 14 until the second bolt 13 enters the second internal thread sleeve 12, and fasten the second bolt 13.

[0073] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

[0074] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In addition, the term "connected" used in this text, without special explanation, can be directly connected or indirectly connected through other components.

Claims

1. A semi-assembled high-speed maglev track beam, comprising a propulsion groove (4) and a suspension groove (5), characterized in that: It also comprises a bottom plate (1) extending in the direction of the track, and two rows of precast concrete parts (3) assembled on the bottom plate (1) and distributed in a mirror image along the axial direction of the bottom plate (1), the propulsion groove (4) being formed between the two rows of precast concrete parts (3), and the suspension groove (5) being arranged on the precast concrete parts (3); along the axial direction of the bottom plate (1), two adjacent precast concrete parts (3) are spliced ​​with each other; the bottom plate (1) is cast on site, and the precast concrete parts (3) are prefabricated; Three rows of inspection holes (2) are provided on the bottom plate (1), and each row of inspection holes (2) extends axially along the bottom plate (1); two rows of inspection holes (2) are respectively located below two rows of prefabricated concrete parts (3), and another row of inspection holes (2) is located at the bottom of the advancement groove (4); a channel (6) is provided at the bottom of the suspension groove (5) and is opposite to and connected to the corresponding inspection holes (2); An assembly block (7) is fixed to the bottom of the prefabricated concrete part (3), and an assembly groove (8) matching the assembly block (7) is provided on the top surface of the bottom plate (1); the assembly block (7) is located below the suspension groove (5), and the assembly block (7) is detachably connected to the assembly groove (8); The bottom of the suspension groove (5) is provided with a plurality of first connection holes (19) penetrating to the bottom of the assembly block (7); the bottom of the assembly groove (8) is pre-embedded with first internally threaded sleeves (9) corresponding one to one with the first connection holes (19); the assembly block (7) and the assembly groove (8) are connected via first bolts (10) matching the first internally threaded sleeves (9); It also includes pads (11) located on both sides of the assembly block (7), the pads (11) being detachably connected to the assembly block (7) and / or the prefabricated concrete component (3); the bottom surface height of the pads (11) is equal to or lower than the bottom surface height of the assembly block (7); A second internally threaded sleeve (12) is pre-embedded on both lateral sides of the assembly block (7); a second connecting hole matching the second internally threaded sleeve (12) is provided on the cushion block (11); the cushion block (11) and the assembly block (7) are connected via a second bolt (13) matching the second internally threaded sleeve (12); The bottom plate (1) is provided with third connection holes (14) on both lateral sides, the third connection holes (14) being connected to the assembly groove (8) and used for the second bolt (13) to pass through; when the assembly block (7) is located in the assembly groove (8), the third connection holes (14) are directly opposite to the second internally threaded sleeve (12); It also includes a plurality of grouting channels (15) located inside the assembly block (7), wherein the grouting channels (15) correspond one-to-one to the first connecting holes (19); one end of the grouting channel (15) is connected to the inside of the second internally threaded sleeve (12), and the other end is connected to the corresponding first connecting hole (19).

2. A semi-assembled high-speed maglev track beam according to claim 1, characterized in that: The top of the prefabricated concrete part (3) is provided with a positioning surface (16), and the positioning surface (16) is located on one side of the suspension groove (5) facing the transverse outer side of the bottom plate (1); along the axial direction of the bottom plate (1), a positioning groove (17) is provided at one end of the positioning surface (16), and a positioning protrusion (18) is provided at the other end, and the positioning groove (17) and the positioning protrusion (18) match each other.

3. A method for assembling a semi-assembled high-speed maglev track beam according to claim 1 or 2, characterized in that: include: The base plate (1) is cast in situ; each precast concrete part (3) is lifted in sequence, the precast concrete part (3) is assembled onto the base plate (1), and two adjacent precast concrete parts (3) are spliced ​​together.

4. The assembly method according to claim 3, characterized in that: The method for assembling a precast concrete part (3) onto a base plate (1) comprises: When the prefabricated concrete part (3) leaves the factory, pads (11) are connected to the lateral sides of the assembly block (7) at the bottom and transported to the work site; Lifting the prefabricated concrete component (3) at the work site until the cushion block (11) is off the ground, and removing the cushion block (11); Lower the assembly block (7) into the corresponding assembly groove (8) on the top surface of the base plate (1); Screw the first bolt (10) into the first connecting hole (19) in the suspension groove (5) until the first bolt (10) enters the first internal thread sleeve (9) pre-buried at the bottom of the assembly groove (8), and tighten the first bolt (10); Inserting a grouting pipe into a third connecting hole (14) on the outside of the bottom plate (1) and into a second internally threaded sleeve (12) on the side of the assembly block (7), sealing the end of the third connecting hole (14), and injecting concrete inwardly through the grouting pipe until the grouting pressure reaches a preset pressure; The blocking of the end of the third connecting hole (14) is released, and the second bolt (13) is screwed into the third connecting hole (14) until the second bolt (13) enters the second internally threaded sleeve (12), and the second bolt (13) is tightened.

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