Prefabricated rail top air duct of subway station and hoisting and installation method thereof

Abstract

The present invention discloses a prefabricated rail top air duct of a subway station, comprising a first prefabricated side panel, which comprises a first column, a second column, a first panel, a first side footboard, and a second side footboard; a second prefabricated side panel, which comprises a third column, a fourth column, a second panel, a third side footboard, and a fourth side footboard; an air duct bottom plate, which is overlapped with the first side footboard, the second side footboard, the third side footboard, and the fourth side footboard; a first screw; a second screw; a third screw; a fourth screw; a first waterproof rubber ring; a second waterproof rubber ring; a third waterproof rubber ring; and a fourth waterproof rubber ring. The present invention also discloses a method for hoisting and installing the prefabricated rail top air duct of a subway station. It can shorten the construction period, improve the construction quality, reduce the construction cost, and improve the degree of safe and civilized construction, can prevent water from leaking from the station middle plate to the rail top air duct, ensure the normal use of the shielding door of the subway station, and can overcome the problem that the service life of the prefabricated rail top air duct is affected by the heavy weight of the components.

Description

Technical Field

[0001] The invention relates to a rail top air duct of a subway station and a construction technology thereof, and in particular to a prefabricated rail top air duct of a subway station and a hoisting and installation method thereof. Background Art

[0002] The rail-top duct is the exhaust duct on the top of the train. It is an important internal structural component of the subway station ventilation system and is hung at the junction of the station center plate and the structural side wall. Due to the special location of the duct, it is generally not cast at the same time as the main body of the station. Especially in stations where shield construction needs to pass, the rail-top duct must be cast later.

[0003] During the construction phase, subway stations are usually used as the starting or arrival site for shield tunneling. Therefore, secondary structures such as the track-top air duct inside the station can only be constructed after the main structure is completed and the construction of the sections at both ends of the station does not need to occupy the platform structure area. Previously, the track-top air duct inside the subway station was constructed using the cast-in-place method. This construction method is to reserve air duct steel bars during the construction of the main structure of the subway station. After the main structure is completed, the track-top air duct is cast by tying steel bars and pouring concrete on the construction site to connect it with the main body of the subway station as a whole. However, the cast-in-place construction method of the track-top air duct inside the subway station will bring some problems, mainly: first, it is necessary to invest more manpower and material resources on the construction site for construction, there are many construction processes, and all structural components need to be completed on the construction site, and it is necessary to wait for the concrete age. This production method has a low degree of industrialization, low construction efficiency, and a long construction period; second, the existing cast-in-place construction method of the track-top air duct inside the subway station still has problems such as large consumption of materials, resources and energy, large amount of construction waste, poor construction environment, large dust pollution on site, and cross-operation with interval construction, and mutual constraints on construction periods; it cannot meet the requirements of high-quality, high-efficiency, energy-saving and environmentally friendly sustainable development construction; third, due to the particularity of the structure and position of the track-top air duct, the construction space is small, concrete vibration and surface smoothing are difficult, and the construction quality is not easy to guarantee; fourth, the cast-in-place construction of the track-top air duct inside the subway station means that the civil construction needs to enter the site twice, which often takes up the time for the later mechanical and electrical installation and decoration, directly affecting the opening period of the entire line.

[0004] Although the Chinese invention patent (publication number CN 110206274 A) solves the problems caused by the aforementioned cast-in-place construction method, in the Chinese invention patent, the middle plate embedded steel sleeve 9 penetrates the platform layer middle plate 23 in the up and down direction, causing the water in the platform layer middle plate 23 to leak from the platform layer middle plate 23 to the prefabricated assembled rail top air duct through the inner hole of the middle plate embedded steel sleeve 9, thereby affecting the normal use of the subway station screen door. In addition, in order to ensure strength and pre-embed the hanging wall pre-embedded connecting screw 11 on the prefabricated hanging wall No. Ⅰ 2 and the prefabricated hanging wall No. Ⅱ 3, the upper part of the prefabricated hanging wall No. Ⅰ 2 and the prefabricated hanging wall No. Ⅱ 3 needs to be thickened, and the lower part of the prefabricated hanging wall No. Ⅰ 2 and the prefabricated hanging wall No. Ⅱ 3 is roughly a plate-like structure (except for the hanging wall ear plate 13), and the lower part is provided with a hanging wall ear plate 13, and the prefabricated air duct plate 4 is arranged on the hanging wall ear plate 13. In order to bear the weight of the prefabricated air duct plate 4, the lower part of the prefabricated hanging wall No. Ⅰ 2 and the prefabricated hanging wall No. Ⅱ 3 must also ensure the necessary thickness to ensure strength, so that the overall weight of the prefabricated hanging wall No. Ⅰ 2 and the prefabricated hanging wall No. Ⅱ 3 is heavy and inconvenient to hoist. After hoisting on the platform layer middle plate 23, the hanging wall pre-embedded connecting screw 11 and the middle plate fastening nut 10 screwed and fastened therewith need to bear a large load, which affects the service life and is also not economical.

[0005] How to solve the problem of water entering the prefabricated assembled track top air duct through the station middle plate and the problem of the prefabricated assembled track top air duct being affected in its service life due to the heavy weight of components such as No. Ⅰ prefabricated suspended wall 2 and No. Ⅱ prefabricated suspended wall 3 have become technical problems that need to be solved urgently. Summary of the invention

[0006] The purpose of the present invention is to provide a prefabricated rail top air duct of a subway station and a hoisting and installation method thereof, which can prevent water from leaking from the station middle plate to the prefabricated rail top air duct and overcome the problem that the service life of the prefabricated rail top air duct is affected by the heavy weight of the components.

[0007] The technical solution of the present invention for achieving the above-mentioned object is as follows:

[0008] A prefabricated rail top air duct for a subway station, comprising:

[0009] The first prefabricated side panel comprises a first column, a second column, a first panel, a first side foot board, a second side foot board, a first screw, a second screw, a first waterproof rubber ring, and a second waterproof rubber ring, wherein the first panel is located between the first and second columns, the thickness of the first panel is less than the thickness between the two side surfaces of the first column and the second column, the first side foot board is located on the side surface of the lower end of the first column, the second side foot board is located on the same side surface of the lower end of the second column as the first side foot board, the first column, the second column, the first panel, the first side foot board, and the second side foot board are prefabricated as a whole; the lower end of the first screw is pre-buried on the first column The first column has an upper end surface, and its upper end extends upward along the axial direction of the first column; the lower end of the second screw is pre-buried in the upper end surface of the second column, and its upper end extends upward along the axial direction of the second column; the first waterproof rubber ring is sleeved on the first screw, and its part facing the upper end surface of the first column is pre-buried in the upper end surface of the first column, and its part other than the part pre-buried in the upper end surface of the first column protrudes from the upper end surface of the first column; the second waterproof rubber ring is sleeved on the second screw, and its part facing the upper end surface of the second column is pre-buried in the upper end surface of the second column, and its part other than the part pre-buried in the upper end surface of the second column protrudes from the upper end surface of the second column;

[0010] The second prefabricated side panel includes a third column, a fourth column, a second panel, a third side foot board, a fourth side foot board, a third screw, a fourth screw, a third waterproof rubber ring, and a fourth waterproof rubber ring, wherein the second panel is located between the third and fourth columns, the thickness of the second panel is less than the thickness between the two side surfaces of the third column and the fourth column, the third side foot board is located on the side surface of the lower end of the third column, the fourth side foot board is located on the same side surface of the lower end of the fourth column as the third side foot board, and the third column, the fourth column, the second panel, the third side foot board, and the fourth side foot board are prefabricated as a whole; the lower end of the third screw is pre-buried on the third column The lower end of the fourth screw is embedded in the upper end surface of the fourth column, and the upper end thereof extends upward along the axial direction of the fourth column; the third waterproof rubber ring is sleeved on the third screw, and the portion thereof facing the upper end surface of the third column is embedded in the upper end surface of the third column, and the portion thereof other than the portion embedded in the upper end surface of the third column protrudes from the upper end surface of the third column; the fourth waterproof rubber ring is sleeved on the fourth screw, and the portion thereof facing the upper end surface of the fourth column is embedded in the upper end surface of the fourth column, and the portion thereof other than the portion embedded in the upper end surface of the fourth column protrudes from the upper end surface of the fourth column;

[0011] The air duct bottom plate is overlapped with the first side foot plate, the second side foot plate, the third side foot plate, and the fourth side foot plate;

[0012] Among them, the side surface of the first side foot plate of the first column and the side surface of the second side foot plate of the second column are both facing the second prefabricated side panel, the side surface of the third side foot plate of the third column and the side surface of the fourth side foot plate of the fourth column are both facing the first prefabricated side panel, the first and second side foot plates protrude toward the second prefabricated side panel, and the third and fourth side foot plates protrude toward the first prefabricated side panel; the first screw rod is upwardly passed through the first mounting hole reserved in the middle plate of the station and then is screwed together with the first nut for fastening, the second screw rod is upwardly passed through the second mounting hole reserved in the middle plate of the station and then is screwed together with the second nut for fastening, the third screw rod is upwardly passed through the third mounting hole reserved in the middle plate of the station and then is screwed together with the third nut for fastening, and the fourth screw rod is upwardly passed through the fourth mounting hole reserved in the middle plate of the station and then is screwed together with the fourth nut for fastening.

[0013] The surface of the first side foot plate facing the station middle plate is provided with a first groove extending in the longitudinal direction of the subway station, the surface of the second side foot plate facing the station middle plate is provided with a second groove extending in the longitudinal direction of the subway station and coaxial with the first groove, the surface of the third side foot plate facing the station middle plate is provided with a third groove extending in the longitudinal direction of the subway station, the surface of the fourth side foot plate facing the station middle plate is provided with a fourth groove extending in the longitudinal direction of the subway station and coaxial with the third groove, the air duct bottom plate is provided with a first boss extending into the first and second grooves and capable of sliding back and forth in the first and second grooves along the longitudinal direction of the subway station, and a second boss extending into the third and fourth grooves and capable of sliding back and forth in the third and fourth grooves along the longitudinal direction of the subway station.

[0014] The side of the first column opposite to the first panel is provided with a first positioning docking groove extending in the up-down direction, and the side of the second column opposite to the first panel is provided with a first positioning docking boss extending in the up-down direction. The first positioning docking groove of any first prefabricated side panel can be adapted to dock with the first positioning docking boss of any other first prefabricated side panel.

[0015] The side of the third column opposite to the second panel is provided with a second positioning docking groove extending in the up-down direction, and the side of the fourth column opposite to the second panel is provided with a second positioning docking boss extending in the up-down direction. The second positioning docking groove of any second prefabricated side panel can be adapted to dock with the second positioning docking boss of any other second prefabricated side panel.

[0016] The side walls and bottom surface of the first positioning and docking groove are covered with a first expansion rubber strip.

[0017] The side walls and bottom surface of the second positioning and docking groove are covered with a second expansion rubber strip.

[0018] The first prefabricated side panels and the second prefabricated side panels are both multiple pieces, and the first prefabricated side panels and the second prefabricated side panels are arranged in a staggered ring.

[0019] A method for hoisting and installing the prefabricated rail-top air duct of the above-mentioned subway station comprises the following steps:

[0020] Step 1, reserve the first, second, third and fourth installation holes on the station center plate; reserve a first grouting groove at the opening of the first installation hole on the upper surface of the station center plate, and the opening of the first installation hole is located at the bottom surface of the first grouting groove; reserve a second grouting groove at the opening of the second installation hole on the upper surface of the station center plate, and the opening of the second installation hole is located at the bottom surface of the second grouting groove; reserve a third grouting groove at the opening of the third installation hole on the upper surface of the station center plate, and the opening of the third installation hole is located at the bottom surface of the third grouting groove; reserve a fourth grouting groove at the opening of the fourth installation hole on the upper surface of the station center plate, and the opening of the fourth installation hole is located at the bottom surface of the fourth grouting groove;

[0021] Step 2, prefabricating the first prefabricated side panel, the second prefabricated side panel, and the air duct bottom panel at the component prefabrication site, and transporting the prefabricated first prefabricated side panel, the second prefabricated side panel, and the air duct bottom panel to the construction site;

[0022] Step 3, hoist the first prefabricated side panel, the second prefabricated side panel, and the air duct bottom panel transported to the site through the shield hoisting hole into the subway station and place them on the station bottom plate;

[0023] Step 4: The jacking vehicle is placed on the station floor. The jacking vehicle first lifts the first prefabricated side panel placed on the station floor. The jacking vehicle moves and adjusts its position so that the first screw is aligned with the first mounting hole and the second screw is aligned with the second mounting hole. The first prefabricated side panel is continuously lifted upward so that the first screw passes through the first mounting hole and the second screw passes through the second mounting hole. The upper end surfaces of the first and second columns are both pressed against the lower surface of the station middle plate. Then, the first screw is screwed and fastened with the first nut, and the second screw is screwed and fastened with the second nut.

[0024] Step 5, pouring quick-setting concrete into the first and second grouting grooves;

[0025] Step 6, laying the first and second steel plates on the first and second grouting grooves respectively, the first screw rod passes through the through hole on the first steel plate and is screwed and fastened with the fifth nut, and the second screw rod passes through the through hole on the second steel plate and is screwed and fastened with the sixth nut;

[0026] Step 7, according to steps 4-6, more first prefabricated side panels are installed and connected in pairs and arranged in sequence along the longitudinal direction of the subway station, wherein the first column of one of the two adjacent first prefabricated side panels is connected to the side opposite to the first panel and the second column of the other of the two adjacent first prefabricated side panels is connected to the side opposite to the first panel, and the first groove and the second groove of the first prefabricated side panel currently installed are made coaxial with the first groove and the second groove of the first prefabricated side panel installed previously, and the bottom surfaces of the first groove and the second groove of the first prefabricated side panel currently installed are made coplanar and leveled with the bottom surfaces of the first groove and the second groove of the first prefabricated side panel installed previously;

[0027] Step 8, after completing step 7, the jacking vehicle lifts the second prefabricated side panel placed on the station floor, moves and adjusts the position, aligns the third screw with the third mounting hole, and the fourth screw with the fourth mounting hole, and continues to lift the second prefabricated side panel upward to make the third screw pass through the third mounting hole, the fourth screw pass through the fourth mounting hole, and make the upper end surfaces of the third and fourth columns press against the lower surface of the station middle plate, then the third screw is screwed and tightened with the third nut, and the fourth screw is screwed and tightened with the fourth nut;

[0028] Step 9, pouring quick-setting concrete into the third and fourth grouting grooves;

[0029] Step 10, laying the third and fourth steel plates on the third and fourth grouting grooves respectively, the third screw rod passes through the through hole on the third steel plate and is screwed and fastened with the seventh nut, and the fourth screw rod passes through the through hole on the fourth steel plate and is screwed and fastened with the eighth nut;

[0030] Step 11, according to steps 8-10, more second prefabricated side panels are installed and connected in pairs and arranged in sequence along the longitudinal direction of the subway station, wherein the third column of one of the two adjacent second prefabricated side panels is connected to the side opposite to the second panel and the fourth column of the other of the two adjacent second prefabricated side panels is connected to the side opposite to the second panel, and the third groove and the fourth groove of the second prefabricated side panel currently installed are made coaxial with the third groove and the fourth groove of the second prefabricated side panel installed previously, and the bottom surfaces of the third groove and the fourth groove of the second prefabricated side panel currently installed are made coplanar and leveled with the bottom surfaces of the third groove and the fourth groove of the second prefabricated side panel installed previously;

[0031] Step 12: The lifting vehicle lifts the air duct bottom plate placed on the station bottom plate, and moves and adjusts the position so that the first boss of the air duct bottom plate is aligned with the first and second grooves, and the second boss is aligned with the third and fourth grooves, and pushes the air duct bottom plate to move in the longitudinal direction of the subway station until the air duct bottom plate is moved into place;

[0032] Step 13, according to step 12, install more air duct bottom plates and connect them two by two and arrange them in sequence along the longitudinal direction of the subway station.

[0033] The first prefabricated side panel and the second prefabricated side panel are installed in a staggered manner.

[0034] The method further includes the steps of pouring waterproof material into the first and second installation holes after step 4 and before step 5, and the step of pouring waterproof material into the third and fourth installation holes after step 8 and before step 9.

[0035] The beneficial effects of the present invention are:

[0036] (1) The prefabricated rail-top air duct of the subway station of the present invention has a first and a second prefabricated side panel and an air duct bottom panel which are respectively prefabricated as an integral component in a component prefabrication yard, a thickness of the first panel is less than a thickness between the two side surfaces of the first column and the second column, a thickness of the second panel is less than a thickness between the two side surfaces of the third column and the fourth column, and a first and a second screw are pre-embedded in the first prefabricated side panel, and a third and a fourth screw are pre-embedded in the second prefabricated side panel, and a first waterproof rubber ring is sleeved on the first screw, a portion of the first screw facing the upper end surface of the first column is pre-embedded in the upper end surface of the first column, and a portion of the first screw other than the portion pre-embedded in the upper end surface of the first column protrudes out of the upper end surface of the first column. The second waterproof rubber ring is sleeved on the second screw, and the part thereof facing the upper end face of the second column is embedded in the upper end face of the second column, and the part thereof other than the part embedded in the upper end face of the second column protrudes from the upper end face of the second column; the third waterproof rubber ring is sleeved on the third screw, and the part thereof facing the upper end face of the third column is embedded in the upper end face of the third column, and the part thereof other than the part embedded in the upper end face of the third column protrudes from the upper end face of the third column; the fourth waterproof rubber ring is sleeved on the fourth screw, and the part thereof facing the upper end face of the fourth column is embedded in the upper end face of the fourth column, and the part thereof other than the part embedded in the upper end face of the fourth column protrudes from the upper end face of the fourth column. The aforementioned first prefabricated side panel, second prefabricated side panel and air duct bottom panel are then transported to the construction site for hoisting and installation, thereby assembling the prefabricated rail-top air duct of the subway station. In this way, it is not necessary to invest more manpower and material resources on the construction site for construction, the construction process is reduced, there is no need to wait for the concrete age, the construction efficiency is high, the construction period is short, the consumption of materials, resources and energy is reduced, the amount of construction waste is small, the construction environment is good, and the on-site dust pollution is small, which can meet the requirements of high-quality, high-efficiency, energy-saving and environmentally friendly sustainable development construction; in the case of narrow construction space, it can avoid the problems of post-cast prefabricated rail-top air duct concrete vibration and surface smoothing difficulties, the construction quality is easy to be guaranteed, and there is no need for civil construction to enter the site for the second time, and there is no need to occupy the later mechanical and electrical installation and decoration time, and the opening period can be guaranteed. At the same time, the first, second, third and fourth waterproof rubber rings can block the first, second, third and fourth installation hole openings to prevent the water in the station middle plate from leaking from the station middle plate to the rail-top air duct through the first, second, third and fourth installation holes, thereby ensuring the normal use of the subway station shield door. The thickness of the first panel is smaller than the thickness between the two side surfaces of the first column and the second column. Without reducing the overall strength of the first prefabricated side panel, the weight can be reduced, the lifting and installation are convenient, the cost can be reduced, and the load of the first screw and the second screw can be reduced, without affecting the service life of the prefabricated rail top air duct of the present invention; the thickness of the second panel is smaller than the thickness between the two side surfaces of the third column and the fourth column. Without reducing the overall strength of the second prefabricated side panel, the weight can be reduced, the lifting and installation are convenient, and the cost can be reduced; the load of the third screw and the fourth screw can be reduced, without affecting the service life of the prefabricated rail top air duct of the present invention.It can be seen that the prefabricated rail top air duct of the subway station of the present invention can shorten the construction period, improve the construction quality, reduce the construction cost and improve the level of safe and civilized construction. It can prevent water from the station middle plate from leaking from the station middle plate to the prefabricated rail top air duct, does not affect the service life of the prefabricated rail top air duct of the present invention, ensures the normal use of the subway station shielding door, and can improve the economic benefits.

[0037] (2) The method for hoisting and installing the prefabricated rail-top air duct of the subway station of the present invention has a fast and flexible installation time and does not require a second entry of civil engineering. It has great advantages in stations where shield tunneling starts and shield tunneling passes. It can effectively shorten the construction period, improve the construction quality, reduce the construction cost, improve the level of safe and civilized construction, and improve the economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the cross-sectional structure of the prefabricated rail top air duct of the subway station of the present invention (sectioned along the axial direction of the first screw and the third screw).

[0039] Figure 2 It is a schematic diagram of the cross-sectional structure of the prefabricated rail top air duct of the subway station of the present invention (sectioned along the axial direction of the second screw and the fourth screw).

[0040] Figure 3 for Figure 1 Enlarged view of point A.

[0041] Figure 4 for Figure 1 Enlarged view of point B.

[0042] Figure 5 for Figure 2 Enlarged view of point C.

[0043] Figure 6 for Figure 2 Enlarged view of point D.

[0044] Figure 7 It is a schematic diagram of the top structure of the first prefabricated side panel of the present invention.

[0045] Figure 8 for Figure 7 Left view of .

[0046] Fig. 9 for Figure 7 Right view of .

[0047] Fig.10 It is a schematic diagram of the top structure of the second prefabricated side panel of the present invention.

[0048] Fig.11 for Fig.10 Left view of .

[0049] Fig.12 for Fig.10 Right view of .

[0050] Fig.13 This is a top view structural diagram of the docking arrangement of the first and second prefabricated side panels and the air duct bottom panel of the present invention when they are installed on the station middle panel (the station middle panel and station side walls are not shown in the figure). DETAILED DESCRIPTION

[0051] The examples given below are specific descriptions of the present invention. It is necessary to point out that the following examples are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention.

[0052] In the present invention, the descriptions of "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh", and "eighth" may explicitly or implicitly include at least one of the features.

[0053] Figure 1-6 An embodiment of a prefabricated rail top air duct of a subway station among many embodiments of the present invention is exemplified. Figure 1 , 2 In the figure, g represents the side wall of the station. The prefabricated rail top air duct of the subway station comprises a first prefabricated side panel 1, a second prefabricated side panel 2, and an air duct bottom panel 3.

[0054] See also Figure 3 , 5, 7-9, the first prefabricated side panel 1 includes a first column 11, a second column 12, a first panel 13, a first side foot board 14, a second side foot board 15, a first screw 4, a second screw 5, a first waterproof rubber ring 8, and a second waterproof rubber ring 9. The first panel 13 is located between the first and second columns 11 and 12. The first side foot board 14 is located on the side of the lower end of the first column 11, and the second side foot board 15 is located on the same side of the lower end of the second column 12 as the first side foot board 14. The first column 11, the second column 12, the first panel 13, the first side foot board 14, and the second side foot board 15 are prefabricated as a whole, that is, the first column 11, the second column 12, the first panel 13, the first side foot board 14, and the second side foot board 15 are prefabricated as a whole to form the first prefabricated side panel 1. The side surface of the first side foot plate 14 of the first column 11 and the side surface of the second side foot plate 15 of the second column 12 are both facing the second prefabricated side plate 2, and the first and second side foot plates 14 and 15 protrude toward the second prefabricated side plate 2. The lower end of the first screw rod 4 is embedded in the upper end surface of the first column 11, and its upper end extends upward along the axial direction of the first column 11. The lower end of the second screw rod 5 is embedded in the upper end surface of the second column 12, and its upper end extends upward along the axial direction of the second column 12. The first waterproof rubber ring 8 is mounted on the first screw rod 4, and its part facing the upper end surface of the first column 11 is embedded in the upper end surface of the first column 11, and its part other than the part embedded in the upper end surface of the first column 11 protrudes from the upper end surface of the first column 11. The second waterproof rubber ring 9 is sleeved on the second screw rod 5 , and its portion facing the upper end surface of the second column 12 is embedded in the upper end surface of the second column 12 , and its portion other than the portion embedded in the upper end surface of the second column 12 protrudes from the upper end surface of the second column 12 .

[0055] See also Figure 4 , 6, 10-12, the second prefabricated side panel 2 includes a third column 21, a fourth column 22, a second panel 23, a third side foot board 24, a fourth side foot board 25, a third screw 6, a fourth screw 7, a third waterproof rubber ring a, and a fourth waterproof rubber ring b. The second panel 23 is located between the third and fourth columns 21 and 22. The third side foot board 24 is located on the side of the lower end of the third column 21. The fourth side foot board 25 is located on the same side of the lower end of the fourth column 22 as the third side foot board 24. The third column 21, the fourth column 22, the second panel 23, the third side foot board 24, and the fourth side foot board 25 are prefabricated as a whole, that is, the third column 21, the fourth column 22, the second panel 23, the third side foot board 24, and the fourth side foot board 25 are prefabricated together as a whole to form the second prefabricated side panel 2. The side surface of the third side foot plate 24 of the third column 21 and the side surface of the fourth side foot plate 25 of the fourth column 22 are both facing the first prefabricated side plate 1, and the third and fourth side foot plates 24, 25 protrude toward the first prefabricated side plate 1. The lower end of the third screw 6 is embedded in the upper end surface of the third column, and its upper end extends upward along the axial direction of the third column. The lower end of the fourth screw 7 is embedded in the upper end surface of the fourth column, and its upper end extends upward along the axial direction of the fourth column. The third waterproof rubber ring a is sleeved on the third screw 6, and its part facing the upper end surface of the third column 21 is embedded in the upper end surface of the third column 21, and its part other than the part embedded in the upper end surface of the third column 21 protrudes from the upper end surface of the third column 21. The fourth waterproof rubber ring b is sleeved on the fourth screw rod 7 , and its portion facing the upper end surface of the fourth column 22 is embedded in the upper end surface of the fourth column 22 , and its portion other than the portion embedded in the upper end surface of the fourth column 22 protrudes from the upper end surface of the fourth column 22 .

[0056] See also Figure 1 , 2 , 7-13, the air duct bottom plate 3 is overlapped with the first side foot plate 11, the second side foot plate 12, the third side foot plate 21, and the fourth side foot plate 22.

[0057] exist Figure 1 , 2 In the embodiment presented, there are three first screws 4, three second screws 5, three third screws 6, and three fourth screws 7, and the three first screws 4 are distributed in a triangle, the three second screws 5 are distributed in a triangle, the three third screws 6 are distributed in a triangle, and the three fourth screws 7 are distributed in a triangle to improve the ability to resist shear force. The number of the first screw 4, the second screw 5, the third screw 6, and the fourth screw 7 is not a specific value, and can be other numbers according to actual working conditions.

[0058] The first side foot plate 14 is located on the side surface of the lower end of the first column 11, and the second side foot plate 15 is located on the same side surface of the lower end of the second column 12 as the first side foot plate 14. The lower end of the first screw rod 4 is embedded in the upper end surface of the first column 11, and its upper end extends upward along the axial direction of the first column 11. The lower end of the second screw rod 5 is embedded in the upper end surface of the second column 12, and its upper end extends upward along the axial direction of the second column 12. In this way, the weight of the air duct bottom plate 3 and the first prefabricated side plate 1 itself is borne by the first column 11 and the second column 12. Without reducing the overall strength of the first prefabricated side plate 1, the thickness of the first panel 13 is less than that of the first column 11. The thickness between the two sides of the second column 12. The thickness of the first panel 13 can be prefabricated to be thinner while ensuring its necessary strength. For example, the thickness of the first panel 13 can be 2cm~5cm. For example, the cross-section of the first column 11 and the second column 12 is square and its side length can be 15cm~20cm. The advantages of the first prefabricated side panel 1 of this structure are: without reducing the overall strength of the first prefabricated side panel 1, it can reduce weight, facilitate lifting and installation, and reduce costs; it can reduce the load of the first screw 4 and the second screw 5, and does not affect the service life of the prefabricated rail top air duct of the present invention. The two sides of the first column 11 and the second column 12 refer to the sides of the first column 11 and the second column 12 facing the second prefabricated side panel 2 and the sides of the first column 11 and the second column 12 facing away from the second prefabricated side panel 2. The thickness of the first panel 13 refers to the distance between the side of the first panel 13 facing the second prefabricated side panel 2 and the side of the first panel 13 facing away from the second prefabricated side panel 2.

[0059] The third side foot plate 24 is located on the side surface of the lower end of the third column 21, the fourth side foot plate 25 is located on the same side surface of the lower end of the fourth column 22 as the third side foot plate 24, the lower end of the third screw rod 6 is embedded in the upper end surface of the third column 21, and its upper end extends upward along the third column axis 21, and the lower end of the fourth screw rod 7 is embedded in the upper end surface of the fourth column, and its upper end extends upward along the fourth column axis. In this way, the weight of the air duct bottom plate 3 and the second prefabricated side panel 2 itself is borne by the third column 21 and the fourth column 22. Without reducing the overall strength of the second prefabricated side panel 2, the thickness of the second panel 23 is less than the thickness of the third column 21. The thickness between the two sides of the fourth column 22, the second panel 23 can be prefabricated to be thinner while ensuring its necessary strength. For example, the thickness of the second panel 23 can be 2cm~5cm. For example, the cross-section of the third column 21 and the fourth column 22 is a square and its side length can be 15cm~20cm. The second prefabricated side panel 2 of this structure has the advantages of: without reducing the overall strength of the second prefabricated side panel 2, it can reduce weight, facilitate lifting and installation, and reduce costs; it can reduce the load of the third screw 6 and the fourth screw 7, and does not affect the service life of the prefabricated rail top air duct of the present invention. The two sides of the third column 21 and the fourth column 22 refer to the sides of the third column 21 and the fourth column 22 facing the first prefabricated side panel 1 and the sides of the third column 21 and the fourth column 22 facing away from the first prefabricated side panel 1. The thickness of the second panel 23 refers to the distance between the side of the second panel 23 facing the first prefabricated side panel 1 and the side of the second panel 23 facing away from the first prefabricated side panel 1.

[0060] See also Figure 3-6 The first screw 4 passes upward through the first mounting hole c1 reserved in the station middle plate c and is screwed together with the first nut d1 to be fastened, the second screw 5 passes upward through the second mounting hole c2 reserved in the station middle plate c and is screwed together with the second nut d2 to be fastened, the third screw 6 passes upward through the third mounting hole c3 reserved in the station middle plate c and is screwed together with the third nut d3 to be fastened, the fourth screw 7 passes upward through the fourth mounting hole c4 reserved in the station middle plate c and is screwed together with the fourth nut d4 to be fastened.

[0061] The present invention installs the first prefabricated side panel 1 and the second prefabricated side panel 2 on the station middle panel c through the first mounting hole c1, the second mounting hole c2, the third mounting hole c3 and the fourth mounting hole c4. Due to the existence of the first mounting hole c1, the second mounting hole c2, the third mounting hole c3 and the fourth mounting hole c4, if no blocking measures are taken for the first mounting hole c1, the second mounting hole c2, the third mounting hole c3 and the fourth mounting hole c4, water on the station middle panel c will pass through the first, second, third and fourth mounting holes. After entering the prefabricated rail top air duct, the first prefabricated side panel 1 and the second prefabricated side panel 2, the first, second, third and fourth waterproof rubber rings of the present invention can block the first, second, third and fourth mounting hole openings correspondingly, that is, the first waterproof rubber ring can block the first mounting hole opening, the second waterproof rubber ring can block the second mounting hole opening, the third waterproof rubber ring can block the third mounting hole opening, and the fourth waterproof rubber ring can block the fourth mounting hole opening, thereby preventing water from the station center plate from entering the prefabricated rail top air duct through the first, second, third and fourth mounting holes.

[0062] See also Figure 1 , 2 7-12, the first side foot plate 14 is provided with a first groove 16 extending in the longitudinal direction of the subway station on the surface facing the station middle plate c, the second side foot plate 15 is provided with a second groove 17 extending in the longitudinal direction of the subway station and coaxial with the first groove 16 on the surface facing the station middle plate c, the third side foot plate 24 is provided with a third groove 26 extending in the longitudinal direction of the subway station on the surface facing the station middle plate c, the fourth side foot plate 25 is provided with a fourth groove 27 extending in the longitudinal direction of the subway station and coaxial with the third groove 26 on the surface facing the station middle plate c, and the air duct bottom plate 3 is provided with a groove extending into The first boss 31 in the first and second grooves 16 and 17 and capable of sliding back and forth in the longitudinal direction of the subway station and the second boss 32 extending into the third and fourth grooves 26 and 27 and capable of sliding back and forth in the longitudinal direction of the subway station are used to facilitate the positioning of the air duct bottom plate 3 during on-site installation and to push the air duct bottom plate 3 to move in the longitudinal direction of the subway station until the air duct bottom plate 3 is moved into place, while increasing the stability of the overlap between the air duct bottom plate 3 and the first prefabricated side plate 1 and the second prefabricated side plate 2. In this article, the longitudinal direction of the subway station is the direction in which the subway train runs.

[0063] See also Figure 7-9 , 13. The side of the first column 11 opposite to the first panel 13 is provided with a first positioning docking groove 18 extending in the up-down direction. The side of the second column 12 opposite to the first panel 13 is provided with a first positioning docking boss 19 extending in the up-down direction. The first positioning docking groove 18 of any first prefabricated side panel 1 can be adaptively docked with the first positioning docking boss 19 of any other first prefabricated side panel 1 to facilitate the docking and positioning of multiple first prefabricated side panels 1.

[0064] See also Figure 10-13 A second positioning docking groove 28 extending in the up-down direction is provided on the side opposite to the third column 21 and the second panel 23, and a second positioning docking boss 29 extending in the up-down direction is provided on the side opposite to the fourth column 22 and the second panel 23. The second positioning docking groove 28 of any second prefabricated side panel 2 can be adapted to dock with the second positioning docking boss 29 of any other second prefabricated side panel 2 to facilitate docking and positioning of multiple second prefabricated side panels 2.

[0065] See also Figure 7 , 8 The side wall and bottom surface of the first positioning docking groove 18 are covered with a first expansion rubber strip e, and the first expansion rubber strip e can play a waterproof role.

[0066] See also Fig.10 , 11 The side wall and bottom surface of the second positioning and docking groove 28 are covered with a second expansion rubber strip f, which can play a waterproof role.

[0067] See also Figure 1 , 2 13. The first prefabricated side panel 1 and the second prefabricated side panel 2 are both multiple pieces, and the first prefabricated side panel 1 and the second prefabricated side panel 2 are arranged in a staggered manner to ensure the mechanical properties of the prefabricated rail top air duct of the subway station of the present invention. Fig.13 There are two types of air duct bottom plates 3, one of which is a plate-like structure, and the other is a plate-like structure with a through hole 33 running through the thickness direction. The two types of air duct bottom plates 3 are installed alternately. During installation, the through hole 33 is aligned with the position of the subway train air-conditioning condenser to facilitate the hot air of the train air-conditioning condenser to pass through the through hole 33 into the prefabricated rail top air duct of the subway station for discharge.

[0068] See also Figure 1-13 The present invention also provides a method for hoisting and installing the prefabricated rail top air duct of the above-mentioned subway station, comprising the following steps:

[0069] Step 1, reserve the first, second, third and fourth mounting holes c1, c2, c3 and c4 on the station middle plate c; reserve the first grouting groove h1 at the opening of the first mounting hole c1 on the upper surface of the station middle plate c, and the opening of the first mounting hole c1 is located at the bottom surface of the first grouting groove h1; reserve the second grouting groove h2 at the opening of the second mounting hole c2 on the upper surface of the station middle plate c, and the opening of the second mounting hole c2 is located at the bottom surface of the second grouting groove h2; reserve the third grouting groove h3 at the opening of the third mounting hole c3 on the upper surface of the station middle plate c, and the opening of the third mounting hole c3 is located at the bottom surface of the third grouting groove h3; reserve the fourth grouting groove h4 at the opening of the fourth mounting hole c4 on the upper surface of the station middle plate c, and the opening of the fourth mounting hole c3 is located at the bottom surface of the fourth grouting groove h4;

[0070] Step 2, prefabricate the first prefabricated side panel 1, the second prefabricated side panel 2, and the air duct bottom panel 3 at the component prefabrication site, and transport the prefabricated first prefabricated side panel, the second prefabricated side panel, and the air duct bottom panel to the construction site;

[0071] Step 3, hoist the first prefabricated side panel, the second prefabricated side panel, and the air duct bottom panel transported to the site through the shield hoisting hole into the subway station and place them on the station bottom plate i;

[0072] Step 4, the jacking vehicle is placed on the station floor i, and the jacking vehicle first lifts the first prefabricated side panel 1 placed on the station floor i, and the jacking vehicle moves and adjusts the position so that the first screw 4 is aligned with the first mounting hole c1, and the second screw 5 is aligned with the second mounting hole c2, and the first prefabricated side panel 1 is continuously lifted upward so that the first screw 4 passes through the first mounting hole c1, the second screw 5 passes through the second mounting hole c2, and the upper end surfaces of the first and second columns 11 and 12 are both pressed against the lower surface of the station middle plate c, and then the first screw 4 is screwed and fastened with the first nut d1, and the second screw 5 is screwed and fastened with the second nut d2;

[0073] Step 5, pouring quick-setting concrete into the first and second grouting grooves h1 and h2;

[0074] Step 6, the first and second steel plates j1 and j2 are laid on the first and second grouting grooves h1 and h2 respectively, the first screw rod 4 passes through the through hole on the first steel plate j1 and is screwed and fastened with the fifth nut d5, and the second screw rod 5 passes through the through hole on the second steel plate j2 and is screwed and fastened with the sixth nut d6;

[0075] Step 7, according to steps 4-6, more first prefabricated side panels 1 are installed and connected in pairs and arranged in sequence along the longitudinal direction of the subway station, wherein the first column 11 of one of the two adjacent first prefabricated side panels 1 is connected to the side opposite to the first panel 13 and the second column 12 of the other of the two adjacent first prefabricated side panels 1 is connected to the side opposite to the first panel 13, and the first groove 16 and the second groove 17 of the currently installed first prefabricated side panel 1 are made coaxial with the first groove 16 and the second groove 17 of the previously installed first prefabricated side panel 1, and the bottom surfaces of the first groove 16 and the second groove 17 of the currently installed first prefabricated side panel 1 are made coplanar and leveled with the bottom surfaces of the first groove 16 and the second groove 17 of the previously installed first prefabricated side panel 1;

[0076] Step 8, after completing step 7, the jacking vehicle lifts the second prefabricated side panel 2 placed on the station floor i, moves and adjusts the position, aligns the third screw 6 with the third mounting hole c3, aligns the fourth screw 7 with the fourth mounting hole c4, and continues to jack up the second prefabricated side panel 2 so that the third screw 6 passes through the third mounting hole c3, the fourth screw 7 passes through the fourth mounting hole c4, and the upper end surfaces of the third and fourth columns 21 and 22 are all pressed against the lower surface of the station middle plate c, then the third screw 6 is screwed and fastened with the third nut d3, and the fourth screw 7 is screwed and fastened with the fourth nut d4;

[0077] Step 9, pouring quick-setting concrete into the third and fourth grouting grooves h3 and h4;

[0078] Step 10, laying the third and fourth steel plates j3 and j4 on the third and fourth grouting grooves h3 and h4 respectively, the third screw 6 passes through the through hole on the third steel plate j3 and is screwed and fastened with the seventh nut d7, and the fourth screw 7 passes through the through hole on the fourth steel plate j4 and is screwed and fastened with the eighth nut d8;

[0079] Step 11, according to steps 8-10, more second prefabricated side panels 2 are installed and connected in pairs and arranged in sequence along the longitudinal direction of the subway station, wherein the third column 21 of one of the two adjacent second prefabricated side panels 2 is connected to the side opposite to the second panel 23 and the fourth column 22 of the other of the two adjacent second prefabricated side panels 2 is connected to the side opposite to the second panel 23, and the third groove 26 and the fourth groove 27 of the second prefabricated side panel 2 currently installed are made coaxial with the third groove 26 and the fourth groove 27 of the second prefabricated side panel 2 installed previously, and the bottom surfaces of the third groove 26 and the fourth groove 27 of the second prefabricated side panel 2 currently installed are made coplanar and leveled with the bottom surfaces of the third groove 26 and the fourth groove 27 of the second prefabricated side panel 2 installed previously;

[0080] Step 12, the lifting vehicle lifts the air duct bottom plate 3 placed on the station bottom plate i, and moves and adjusts the position so that the first boss 31 of the air duct bottom plate 3 is aligned with the first and second grooves 16 and 17, and the second boss 32 is aligned with the third and fourth grooves 26 and 27, and pushes the air duct bottom plate 3 to move in the longitudinal direction of the subway station until the air duct bottom plate 3 is moved into place;

[0081] Step 13, according to step 12, more air duct base plates 3 are installed and connected in pairs and arranged in sequence along the longitudinal direction of the subway station.

[0082] In some embodiments, in the hoisting and installation method of the prefabricated rail-top air duct of the subway station of the present invention, the first prefabricated side panel 1 and the second prefabricated side panel 2 are installed in a staggered manner.

[0083] In some embodiments, the method for hoisting and installing the prefabricated rail top air duct of the subway station of the present invention also includes the step of pouring waterproof material into the first and second installation holes c1 and c2 after step 4 and before step 5, and the step of pouring waterproof material into the third and fourth installation holes c3 and c4 after step 8 and before step 9 to enhance the waterproof performance.

[0084] Preferably, in the present invention, the bottom surfaces of the first groove 16 and the second groove 17 of the first prefabricated side panel 1 are coplanar and horizontal with the bottom surfaces of the third groove 26 and the fourth groove 27 of the second prefabricated side panel 2, so that the air duct bottom plate 3 can be horizontally arranged when overlapped with the first side foot plate 11, the second side foot plate 12, the third side foot plate 21, and the fourth side foot plate 22, so that the first prefabricated side panel 1 and the second prefabricated side panel 2 can evenly share the weight of the air duct bottom plate 3, so that the first prefabricated side panel 1 and the second prefabricated side panel 2 are subjected to balanced force.

[0085] The first screw 4, the second screw 5, the third screw 6 and the fourth screw 7 are respectively tightened by screwing together the first nut d1, the second nut d2, the third nut d3, the fourth nut d4, the fifth nut d5, the sixth nut d6, the seventh nut d7 and the eighth nut d8. The use of two-step nut tightening can prevent loosening and improve the durability of the tightening.

[0086] It should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0087] The present invention has been described in detail above with reference to the embodiments, which are illustrative rather than restrictive. Changes and modifications without departing from the overall concept of the present invention are within the protection scope of the present invention.

Claims

1. A prefabricated rail top air duct for a subway station, characterized in that: include: The first prefabricated side panel (1) comprises a first column (11), a second column (12), a first panel (13), a first side foot plate (14), a second side foot plate (15), a first screw (4), a second screw (5), a first waterproof rubber ring (8), and a second waterproof rubber ring (9), wherein the first panel (13) is located between the first and second columns (11) and (12), the thickness of the first panel (13) is less than the thickness between the two side surfaces of the first column (11) and the second column (12), the first side foot plate (14) is located on the side surface of the lower end of the first column (11), the second side foot plate (15) is located on the same side surface of the lower end of the second column (12) as the first side foot plate (14), and the first column (11), the second column (12), the first panel (13), the first side foot plate (14), and the second side foot plate (15) are integrally prefabricated. The lower end of the first screw rod (4) is embedded in the upper end surface of the first column (11), and the upper end thereof extends upward along the axial direction of the first column (11); the lower end of the second screw rod (5) is embedded in the upper end surface of the second column (12), and the upper end thereof extends upward along the axial direction of the second column (12); the first waterproof rubber ring (8) is sleeved on the first screw rod (4), and the portion thereof facing the upper end surface of the first column (11) is embedded in the upper end surface of the first column (11), and the portion thereof other than the portion embedded in the upper end surface of the first column (11) protrudes from the upper end surface of the first column (11); the second waterproof rubber ring (9) is sleeved on the second screw rod (5), and the portion thereof facing the upper end surface of the second column (12) is embedded in the upper end surface of the second column (12), and the portion thereof other than the portion embedded in the upper end surface of the second column (12) protrudes from the upper end surface of the second column (12); The second prefabricated side panel (2) comprises a third column (21), a fourth column (22), a second panel (23), a third side foot plate (24), a fourth side foot plate (25), a third screw (6), a fourth screw (7), a third waterproof rubber ring (a), and a fourth waterproof rubber ring (b), wherein the second panel (23) is located between the third and fourth columns (21) and (22), the thickness of the second panel (23) is less than the thickness between the two side surfaces of the third column (21) and the fourth column (22), the third side foot plate (24) is located on the side surface of the lower end of the third column (21), the fourth side foot plate (25) is located on the same side surface of the lower end of the fourth column (22) as the third side foot plate (24), and the third column (21), the fourth column (22), the second panel (23), the third side foot plate (24), and the fourth side foot plate (25) are integrally prefabricated. The lower end of the third screw rod (6) is embedded in the upper end surface of the third column (21), and the upper end thereof extends upward along the axial direction of the third column (21); the lower end of the fourth screw rod (7) is embedded in the upper end surface of the fourth column (22), and the upper end thereof extends upward along the axial direction of the fourth column (22); the third waterproof rubber ring (a) is sleeved on the third screw rod (6), and the portion thereof facing the upper end surface of the third column (21) is embedded in the upper end surface of the third column (21), and the portion thereof other than the portion embedded in the upper end surface of the third column (21) protrudes from the upper end surface of the third column (21); the fourth waterproof rubber ring (b) is sleeved on the fourth screw rod (7), and the portion thereof facing the upper end surface of the fourth column (22) is embedded in the upper end surface of the fourth column (22), and the portion thereof other than the portion embedded in the upper end surface of the fourth column (22) protrudes from the upper end surface of the fourth column (22); An air duct bottom plate (3) overlapped with a first side foot plate (14), a second side foot plate (15), a third side foot plate (24), and a fourth side foot plate (25); The side surface of the first side foot plate (14) of the first column (11) and the side surface of the second side foot plate (15) of the second column (12) are both oriented toward the second prefabricated side plate (2); the side surface of the third side foot plate (24) of the third column (21) and the side surface of the fourth side foot plate (25) of the fourth column (22) are both oriented toward the first prefabricated side plate (1); the first and second side foot plates (14) and (15) are protruding toward the second prefabricated side plate (2); and the third and fourth side foot plates (24) and (25) are protruding toward the first prefabricated side plate (1). protrusion; the first screw rod (4) is upwardly passed through the first mounting hole (c1) reserved in the station middle plate (c) and then screwed and fastened with the first nut (d1); the second screw rod (5) is upwardly passed through the second mounting hole (c2) reserved in the station middle plate (c) and then screwed and fastened with the second nut (d2); the third screw rod (6) is upwardly passed through the third mounting hole (c3) reserved in the station middle plate (c) and then screwed and fastened with the third nut (d3); the fourth screw rod (7) is upwardly passed through the fourth mounting hole (c4) reserved in the station middle plate (c) and then screwed and fastened with the fourth nut (d4).

2. The prefabricated rail top air duct of a subway station according to claim 1, characterized in that: The surface of the first side foot plate (14) facing the station middle plate (c) is provided with a first groove (16) extending in the longitudinal direction of the subway station, the surface of the second side foot plate (15) facing the station middle plate (c) is provided with a second groove (17) extending in the longitudinal direction of the subway station and coaxial with the first groove (16), the surface of the third side foot plate (24) facing the station middle plate (c) is provided with a third groove (26) extending in the longitudinal direction of the subway station, the surface of the fourth side foot plate (25) facing the station middle plate (c) is provided with a fourth groove (27) extending in the longitudinal direction of the subway station and coaxial with the third groove (26), and the air duct bottom plate (3) is provided with a first boss (31) extending into the first and second grooves and capable of reciprocating in the first and second grooves along the longitudinal direction of the subway station, and a second boss (32) extending into the third and fourth grooves and capable of reciprocating in the third and fourth grooves along the longitudinal direction of the subway station.

3. The prefabricated rail top air duct of a subway station according to claim 1, characterized in that: A first positioning docking groove (18) extending in the up-down direction is provided on the side opposite to the first panel (13) of the first column (11); a first positioning docking boss (19) extending in the up-down direction is provided on the side opposite to the first panel (13) of the second column (12); and the first positioning docking groove (18) of any first prefabricated side panel (1) can be adapted to dock with the first positioning docking boss (19) of any other first prefabricated side panel (1).

4. The prefabricated rail top air duct of a subway station according to claim 1, characterized in that: A second positioning docking groove (28) extending in the up-down direction is provided on the side opposite to the second panel (23) of the third column (21); a second positioning docking boss (29) extending in the up-down direction is provided on the side opposite to the second panel (23) of the fourth column (22); and the second positioning docking groove (28) of any second prefabricated side panel (2) can be adapted to dock with the second positioning docking boss (29) of any other second prefabricated side panel (2).

5. The prefabricated rail top air duct of a subway station according to claim 3, characterized in that: The side walls and bottom surface of the first positioning docking groove (18) are covered with a first expansion rubber strip (e).

6. The prefabricated rail top air duct of a subway station according to claim 4, characterized in that: The side walls and bottom surface of the second positioning docking groove (28) are covered with a second expansion rubber strip (f).

7. The prefabricated rail top air duct of a subway station according to any one of claims 1 to 6, characterized in that: The first prefabricated side panel (1) and the second prefabricated side panel (2) are both composed of multiple pieces, and the first prefabricated side panel (1) and the second prefabricated side panel (2) are arranged in a staggered manner.

8. A method for hoisting and installing the prefabricated rail-top air duct of a subway station as claimed in claim 2, characterized in that: The following steps are involved: Step 1, reserve the first, second, third and fourth mounting holes on the station center plate (c); reserve a first grouting groove at the opening of the first mounting hole (c1) on the upper surface of the station center plate (c), and the opening of the first mounting hole (c1) is located at the bottom surface of the first grouting groove; reserve a second grouting groove at the opening of the second mounting hole (c2) on the upper surface of the station center plate (c), and the opening of the second mounting hole (c2) is located at the bottom surface of the second grouting groove; reserve a third grouting groove at the opening of the third mounting hole (c3) on the upper surface of the station center plate (c), and the opening of the third mounting hole (c3) is located at the bottom surface of the third grouting groove; reserve a fourth grouting groove at the opening of the fourth mounting hole (c4) on the upper surface of the station center plate (c), and the opening of the fourth mounting hole (c4) is located at the bottom surface of the fourth grouting groove; Step 2, prefabricating the first prefabricated side panel (1), the second prefabricated side panel (2), and the air duct bottom panel (3) at the component prefabrication site, and transporting the prefabricated first prefabricated side panel (1), the second prefabricated side panel (2), and the air duct bottom panel (3) to the construction site; Step 3, hoisting the first prefabricated side panel (1), the second prefabricated side panel (2), and the air duct bottom panel (3) transported to the site through the shield hoisting hole into the subway station and placing them on the station bottom panel (i); Step 4, the lifting vehicle is placed on the station floor (i), and the lifting vehicle first lifts the first prefabricated side panel (1) placed on the station floor (i), and the lifting vehicle moves and adjusts the position so that the first screw rod (4) is aligned with the first mounting hole (c1), and the second screw rod (5) is aligned with the second mounting hole (c2), and the first prefabricated side panel (1) is continuously lifted upward so that the first screw rod (4) passes through the first mounting hole (c1), and the second screw rod (5) passes through the second mounting hole (c2), and the upper end surfaces of the first and second columns are both pressed against the lower surface of the station middle plate (c), and then the first screw rod (4) is screwed and fastened with the first nut (d1), and the second screw rod (5) is screwed and fastened with the second nut (d2); Step 5, pouring quick-setting concrete into the first and second grouting grooves; Step 6, laying the first and second steel plates on the first and second grouting grooves respectively, the first screw rod (4) passes through the through hole on the first steel plate and is screwed and fastened with the fifth nut, and the second screw rod (5) passes through the through hole on the second steel plate and is screwed and fastened with the sixth nut; Step 7, according to steps 4-6, more first prefabricated side panels (1) are installed and connected in pairs and arranged in sequence along the longitudinal direction of the subway station, wherein the first column (11) of one of the two adjacent first prefabricated side panels (1) and the side opposite to the first panel (13) are connected to the second column (12) of the other of the two adjacent first prefabricated side panels (1) and the side opposite to the first panel (13), and the first groove (16) and the second groove (17) of the first prefabricated side panel (1) currently installed are made coaxial with the first groove (16) and the second groove (17) of the first prefabricated side panel (1) installed previously, and the bottom surface of the first groove (16) and the second groove (17) of the first prefabricated side panel (1) currently installed is made coplanar and level with the bottom surface of the first groove (16) and the second groove (17) of the first prefabricated side panel (1) installed previously; Step 8, after completing step 7, the lifting vehicle lifts up the second prefabricated side panel (2) placed on the station floor (i), moves and adjusts the position so that the third screw (6) is aligned with the third mounting hole (c3), and the fourth screw (7) is aligned with the fourth mounting hole (c4), and continues to lift the second prefabricated side panel (2) upward so that the third screw (6) passes through the third mounting hole (c3), and the fourth screw (7) passes through the fourth mounting hole (c4) and the upper end surfaces of the third and fourth columns are pressed against the lower surface of the station middle plate (c), and then the third screw (6) and the third nut (d3) are screwed together and tightened, and the fourth screw (7) and the fourth nut (d4) are screwed together and tightened; Step 9, pouring quick-setting concrete into the third and fourth grouting grooves; Step 10, laying the third and fourth steel plates on the third and fourth grouting grooves respectively, the third screw rod (6) passes through the through hole on the third steel plate and is screwed and fastened with the seventh nut, and the fourth screw rod (7) passes through the through hole on the fourth steel plate and is screwed and fastened with the eighth nut; Step 11, according to steps 8-10, more second prefabricated side panels (2) are installed and connected in pairs and arranged in sequence along the longitudinal direction of the subway station, wherein the side of the third column (21) of one of the two adjacent second prefabricated side panels (2) facing away from the second panel (23) and the side of the fourth column (22) of the other of the two adjacent second prefabricated side panels (2) facing away from the second panel (23) are connected, and the third groove (26) and the fourth groove (27) of the currently installed second prefabricated side panel (2) are made coaxial with the third groove (26) and the fourth groove (27) of the previously installed second prefabricated side panel (2), and the bottom surface of the third groove (26) and the fourth groove (27) of the currently installed second prefabricated side panel (2) are made coplanar and level with the bottom surface of the third groove (26) and the fourth groove (27) of the previously installed second prefabricated side panel (2); Step 12, the lifting vehicle lifts the air duct bottom plate (3) placed on the station bottom plate (i), and moves and adjusts the position so that the first boss (31) of the air duct bottom plate is aligned with the first and second grooves, and the second boss (32) is aligned with the third and fourth grooves, and pushes the air duct bottom plate (3) to move in the longitudinal direction of the subway station until the air duct bottom plate (3) is moved into place; Step 13, according to step 12, more air duct bottom plates (3) are installed and connected in pairs and arranged in sequence along the longitudinal direction of the subway station.

9. The hoisting installation method according to claim 8, characterized in that: The first prefabricated side panel (1) and the second prefabricated side panel (2) are installed in a staggered manner.

10. The hoisting installation method according to claim 8, characterized in that: The method further includes the steps of pouring waterproof material into the first and second installation holes after step 4 and before step 5, and the step of pouring waterproof material into the third and fourth installation holes after step 8 and before step 9.

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