Construction structure and construction method of deformation joint of underground cast-in-place concrete pipe gallery roof

Abstract

The present invention discloses a structure and method for constructing deformation joints of underground cast-in-place concrete pipe gallery roof, which solves the problem of how to stably locate the positions of waterstops and foam plates in deformation joints. An annular steel frame is arranged on the steel skeleton of the concrete casting top plate on both sides of the deformation joint of the pre-set pipe gallery roof, and a clamping groove for clamping the embedded rubber waterstop wing plate is arranged on the annular steel frame, and a foam plate is arranged above and below the rubber waterstop, and a concrete positioning pad is arranged between the annular steel frame and the foam plate on both sides, and a reserved positioning sand box filled with sealing paste is arranged on the upper surface and the lower surface of the deformation joint, and a concrete positioning pad is also arranged between the reserved positioning sand box and the annular steel frame on both sides, so as to ensure that the positions of the waterstop, foam plate and the reserved groove of the sealing paste do not drift during the subsequent top plate concrete pouring and vibration, thereby improving the molding quality and waterproof ability of the deformation joint.

Description

Technical Field

[0001] The invention relates to an underground concrete pouring pipe gallery, in particular to a construction structure and a construction method of a deformation joint on a top plate of an underground cast-in-place concrete pipe gallery. Background Art

[0002] In urban municipal construction, cast-in-place underground reinforced concrete integrated pipe corridors will be set up to meet the layout requirements of various pipelines and other municipal facilities in the city. The construction process of cast-in-place reinforced concrete underground integrated pipe corridors is as follows: on the ground where the pipe corridor is set up, a foundation pit is first excavated, and at the bottom of the foundation pit, foundation treatment, foundation cushion layer, leveling layer, waterproof layer, and protective layer are applied in sequence. The pipe corridor bottom slab steel bars and wall steel bars are tied on the protective layer, and the top slab casting bottom formwork is supported, and the top slab steel bars are tied on the top slab casting bottom formwork. The pipe corridor bottom slab concrete, guide wall concrete and top slab concrete are continuously cast in layers to form a closed pipe corridor. Finally, the pipe corridor is buried underground by backfilling. Since the pipe corridor is cast underground and the soil above it bears the load, it is necessary to set closed and effectively waterproof pipe corridors at intervals on the pipe corridor. Flexible deformation joints are formed to overcome the uneven settlement of the corridor; the building code also requires that a deformation joint should be set at every interval of no more than 30 meters for the underground comprehensive corridor; the deformation joint on the top slab of the concrete poured corridor is constructed by setting a foam board and a water-stop rubber belt between the steel mesh of the left top slab and the steel mesh of the right top slab before pouring the concrete of the top slab of the corridor, and then, after pouring the top slab concrete, a waterproof flexible deformation joint on the top slab of the corridor is formed; during the pouring of the top slab concrete, in order to make the poured concrete dense, a vibrating rod is needed to vibrate the concrete. Due to the vibration of the poured concrete and the impact force generated by the pouring of the concrete, the position of the waterstop and the foam board will be offset. How to firmly position the waterstop and the foam board in the deformation joint has become a problem that needs to be solved on site. Summary of the invention

[0003] The invention provides a structure and a method for constructing a deformation joint of an underground cast-in-situ concrete pipe gallery top plate, which solves the technical problem of how to stably position a water stop strip and a foam plate in the deformation joint.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The overall concept of the present invention is: an annular steel frame is arranged on the steel frame of the concrete cast top plate on both sides of the pre-set deformation joint of the top plate of the pipe gallery, and a clamping groove for clamping the embedded rubber water stop wing plate is arranged on the annular steel frame, and a foaming plate is arranged above and below the rubber water stop.

[0006] Concrete positioning pads are arranged between the annular steel frames and the foam boards on both sides, reserved positioning sand boxes filled with sealing paste are arranged on the upper and lower surfaces of the deformation joints, and concrete positioning pads are also arranged between the reserved positioning sand boxes and the annular steel frames on both sides, so as to ensure that the positions of the waterstop, foam board and sealing paste reserved grooves do not drift during the subsequent top slab concrete pouring and vibration, thereby improving the molding quality and waterproof ability of the deformation joint.

[0007] A structure for constructing deformation joints of underground cast-in-situ concrete pipe gallery roof slabs, comprising a pipe gallery roof slab concrete pouring bottom template, a reserved space gap for deformation joints of the roof slab is arranged on the pipe gallery roof slab concrete pouring bottom template, a lower steel mesh sheet on the left side of the roof slab and an upper steel mesh sheet on the left side of the roof slab are arranged above the pipe gallery roof slab concrete pouring bottom template on the left side of the reserved space gap for deformation joints of the roof slab, a horse stool bar on the left side of the roof slab is arranged between the lower steel mesh sheet on the left side of the roof slab and the upper steel mesh sheet on the left side of the roof slab, and a lower steel mesh sheet on the right side of the roof slab is arranged above the pipe gallery roof slab concrete pouring bottom template on the right side of the reserved space gap for deformation joints of the roof slab. The steel mesh and the upper steel mesh on the right side of the top plate, between the lower steel mesh on the right side of the top plate and the upper steel mesh on the right side of the top plate, a horse stool bar on the right side of the top plate is arranged, a left annular steel bar frame is arranged on the left side of the reserved space gap of the top plate deformation joint, the left annular steel bar frame is arranged between the lower steel mesh on the left side of the top plate and the upper steel mesh on the left side of the top plate, and a left steel bar clip is arranged on the left annular steel bar frame; a right annular steel bar frame is arranged on the right side of the reserved space gap of the top plate deformation joint, the right annular steel bar frame is arranged between the lower steel mesh on the right side of the top plate and the upper steel mesh on the right side of the top plate, and a right steel bar clip is arranged on the right annular steel bar frame Rebar snap-in; an embedded rubber waterstop is arranged in the middle of the space reserved for the deformation joint of the top plate, the left wing plate of the embedded rubber waterstop is snap-fitted into the left steel bar snap-in, the right wing plate of the embedded rubber waterstop is snap-fitted into the right steel bar snap-in, a lower foam plate is arranged in the space reserved for the deformation joint of the top plate just below the embedded rubber waterstop, a lower sand box is arranged between the lower bottom surface of the lower foam plate and the bottom formwork for pouring concrete of the top plate of the pipe gallery, a left middle and lower cement pad is arranged between the lower foam plate and the left annular steel bar frame, a left lower cement pad is arranged between the lower sand box and the left annular steel bar frame, and a lower foam A right middle-lower cement pad is arranged between the plate and the right side ring-shaped steel bar frame, and a right lower cement pad is arranged between the lower sand box and the right side ring-shaped steel bar frame; an upper foam plate is arranged in the reserved space gap of the top plate deformation joint just above the embedded rubber waterstop, an upper sand box is arranged on the upper top surface of the upper foam plate, a left middle-upper cement pad is arranged between the upper foam plate and the left side ring-shaped steel bar frame, a left upper cement pad is arranged between the upper sand box and the left side ring-shaped steel bar frame, a right middle-upper cement pad is arranged between the upper foam plate and the right side ring-shaped steel bar frame, and a right upper cement pad is arranged between the upper sand box and the right side ring-shaped steel bar frame.

[0008] Iron sheets are provided on the left and right facades of the lower foaming board, and iron sheets are provided on the left and right facades of the upper foaming board; the structure of the upper sand box is exactly the same as that of the lower sand box. The sand box consists of a box body and a box cover. A hinge is provided between one side of the box body and one side of the box cover, and a binding wire is provided between the other side of the box body and the other side of the box cover. The box body is filled with fine sand.

[0009] A method for constructing a deformation joint construction structure of an underground cast-in-place concrete pipe gallery roof slab, comprising: providing a reserved space gap for deformation joints on the pipe gallery roof slab concrete casting bottom template, respectively providing a left side lower steel mesh sheet and a left side upper steel mesh sheet on the top of the pipe gallery roof slab concrete casting bottom template on the left side of the reserved space gap for deformation joints, and respectively providing a right side lower steel mesh sheet and a right side upper steel mesh sheet on the top of the pipe gallery roof slab concrete casting bottom template on the right side of the reserved space gap for deformation joints, characterized by the following steps:

[0010] The first step is to tie and fix the left annular steel frame between the lower steel mesh on the left side of the top plate and the upper steel mesh on the left side of the top plate on the left side of the reserved space gap of the top plate deformation joint, and to set a left steel bar clip on the left annular steel frame; tie and fix the right annular steel frame between the lower steel mesh on the right side of the top plate and the upper steel mesh on the right side of the top plate on the right side of the reserved space gap of the top plate deformation joint, and to set a right steel bar clip on the right annular steel frame;

[0011] Step 2: Set the embedded rubber water stop in the middle of the reserved space of the top plate deformation joint, and clamp the left wing plate of the embedded rubber water stop in the left steel bar clamp, and clamp the right wing plate of the embedded rubber water stop in the right steel bar clamp;

[0012] The third step is to place the lower sand box on the concrete pouring bottom template of the pipe gallery roof just below the middle of the embedded rubber waterstop, and then set the lower foam plate between the middle of the embedded rubber waterstop and the upper top surface of the lower sand box; set an iron plate on the left facade of the lower foam plate, and fix the left middle and lower cement pads between the iron plate on the left facade of the lower foam plate and the left annular steel frame, and fix the left lower cement pads between the left facade of the lower sand box and the left annular steel frame; set an iron plate on the right facade of the lower foam plate, and fix the right middle and lower cement pads between the iron plate on the right facade of the lower foam plate and the right annular steel frame, and fix the right lower cement pads between the right facade of the lower sand box and the right annular steel frame;

[0013] The fourth step is to set an upper foam plate in the reserved space gap of the top plate deformation joint just above the embedded rubber water stop, set an upper sand box on the upper top surface of the upper foam plate, set an iron sheet on the left vertical surface of the upper foam plate, set a left middle upper cement pad between the iron sheet on the left vertical surface of the upper foam plate and the left annular steel frame, set a left upper cement pad between the upper sand box and the left annular steel frame, set an iron sheet on the right vertical surface of the upper foam plate, set a right middle upper cement pad between the iron sheet on the right vertical surface of the upper foam plate and the right annular steel frame, and set a right upper cement pad between the upper sand box and the right annular steel frame;

[0014] Step 5: First pour the top slab concrete on the left side of the reserved space for the top slab deformation joint, so that the height of the first poured concrete layer will submerge the lower left cement pad, and then pour the top slab concrete on the right side of the reserved space for the top slab deformation joint, so that the height of the poured concrete layer will submerge the lower right cement pad; check whether the position of the lower foam board is displaced, if so, adjust the lower foam board to its original position;

[0015] Step 6. Pour the top slab concrete on the left side of the reserved space for the top slab deformation joint for the second time, so that the height of the second poured concrete layer will submerge the left wing plate of the embedded rubber waterstop, and then pour the top slab concrete on the right side of the reserved space for the top slab deformation joint, so that the height of the second poured concrete layer will submerge the right wing plate of the embedded rubber waterstop, check whether the position of the upper foam plate and the embedded rubber waterstop is displaced, if there is displacement, adjust the upper foam plate and the embedded rubber waterstop to the original position;

[0016] Step 7: Pour the top slab concrete on the left side of the reserved space for the top slab deformation joint for the third time, so that the height of the third poured concrete layer will submerge the upper left cement pad, and then pour the top slab concrete on the right side of the reserved space for the top slab deformation joint, so that the height of the third poured concrete layer will submerge the upper right cement pad;

[0017] Step 8. After the top slab concrete to be poured has initially set, remove the bottom formwork for pouring the corridor top slab concrete, untie the binding wires between the box body and the box cover, empty the fine sand in the box body, take out the lower sand box and the upper sand box, and fill the sealing paste in the groove formed after taking out the sand box to form upper and lower sealing paste strips.

[0018] The invention ensures the accuracy of the positions of the water stop strip and the foaming plate when constructing the deformation joint on the top plate of the cast-in-place underground concrete pipe gallery, thereby improving the waterproof performance of the deformation joint of the pipe gallery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the pipe gallery top plate of the present invention when deformation joints are initially formed after concrete is poured;

[0020] Figure 2It is a structural schematic diagram of the pipe gallery and the deformation joint thereon of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the present invention after the steel bars on both sides of the deformation joint are tied on the bottom template 1 for pouring concrete of the top slab of the pipe gallery;

[0022] Figure 4 It is a schematic diagram of the structure after the embedded rubber water stop strip 13, the lower foaming plate 16 and the lower sand box 17 are arranged in the reserved space gap 8 of the top plate deformation joint of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure after the embedded rubber water stop strip 13, the lower foaming plate 16, the lower sand box 17, the upper foaming plate 22 and the upper sand box 23 are arranged in the reserved space gap 8 of the top plate deformation joint of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the present invention when pouring concrete three times;

[0025] Figure 7 It is a schematic diagram of the structure of the deformation joint after the two sand boxes are taken out and replaced to form the upper sealing paste strip 32 and the lower sealing paste strip 31 according to the present invention;

[0026] Figure 8 It is a structural schematic diagram of a sand box of the present invention. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with the accompanying drawings:

[0028] A structure for constructing deformation joints of underground cast-in-situ concrete pipe gallery roof slabs, comprising a pipe gallery roof slab concrete pouring bottom template 1, a top slab deformation joint reserved space gap 8 is arranged on the pipe gallery roof slab concrete pouring bottom template 1, a top slab left side lower steel mesh 2 and a top slab left side upper steel mesh 3 are arranged above the pipe gallery roof slab concrete pouring bottom template 1 on the left side of the top slab deformation joint reserved space gap 8, a top slab left side horse stool reinforcement 4 is arranged between the top slab left side lower steel mesh 2 and the top slab left side upper steel mesh 3, a top slab right side lower steel mesh 5 and a top slab right side upper steel mesh 6 are arranged above the pipe gallery roof slab concrete pouring bottom template 1 on the right side of the top slab deformation joint reserved space gap 8, Between the lower steel mesh 5 on the right side of the top plate and the upper steel mesh 6 on the right side of the top plate, a top plate right side horse stool reinforcement 7 is arranged, and a left side annular steel frame 9 is arranged on the left side of the reserved space gap 8 of the top plate deformation joint, and the left side annular steel frame 9 is arranged between the lower steel mesh 2 on the left side of the top plate and the upper steel mesh 3 on the left side of the top plate, and a left side steel bar clip 10 is arranged on the left side annular steel frame 9; on the right side of the reserved space gap 8 of the top plate deformation joint, a right side annular steel frame 11 is arranged, and the right side annular steel frame 11 is arranged between the lower steel mesh 5 on the right side of the top plate and the upper steel mesh 6 on the right side of the top plate, and a right side steel bar clip 12 is arranged on the right side annular steel frame 11; in the middle of the reserved space gap 8 of the top plate deformation joint, An embedded rubber waterstop 13 is provided, the left wing plate 14 of the embedded rubber waterstop 13 is clamped in the left steel bar clamp 10, the right wing plate 15 of the embedded rubber waterstop 13 is clamped in the right steel bar clamp 12, a lower foam plate 16 is provided in the reserved space gap 8 of the top plate deformation joint just below the embedded rubber waterstop 13, a lower sand box 17 is provided between the lower bottom surface of the lower foam plate 16 and the bottom template 1 for pouring concrete of the top plate of the pipe gallery, a left middle and lower cement pad 19 is provided between the lower foam plate 16 and the left annular steel bar frame 9, a left lower cement pad 18 is provided between the lower sand box 17 and the left annular steel bar frame 9, and a lower foam plate 16 is provided between the lower foam plate 16 and the right annular steel bar frame 11. A right middle-lower cement pad 21 is arranged between the lower sand box 17 and the right side annular steel frame 11, and a right lower cement pad 20 is arranged between the lower sand box 17 and the right side annular steel frame 11; an upper foam plate 22 is arranged in the reserved space gap 8 of the top plate deformation joint just above the embedded rubber waterstop 13, an upper sand box 23 is arranged on the upper top surface of the upper foam plate 22, a left middle-upper cement pad 26 is arranged between the upper foam plate 22 and the left side annular steel frame 9, an upper left cement pad 24 is arranged between the upper sand box 23 and the left side annular steel frame 9, a right middle-upper cement pad 27 is arranged between the upper foam plate 22 and the right side annular steel frame 11, and an upper right cement pad 25 is arranged between the upper sand box 23 and the right side annular steel frame 11.

[0029] Iron sheets are provided on the left and right facades of the lower foaming plate 16, and iron sheets are provided on the left and right facades of the upper foaming plate 22; the structure of the upper sand box 23 is exactly the same as that of the lower sand box 17, and the sand box consists of a box body 33 and a box cover 34, a hinge 35 is provided between one side of the box body 33 and one side of the box cover 34, and a binding wire 36 is provided between the other side of the box body 33 and the other side of the box cover 34, and the box body 33 is filled with fine sand 37.

[0030] A method for constructing a deformation joint construction structure of an underground cast-in-place concrete pipe gallery roof slab, comprising: providing a reserved space gap 8 for deformation joints of a roof slab on a concrete pouring bottom template 1 of a pipe gallery roof slab; providing a lower steel mesh sheet 2 on the left side of the deformation joint reserved space gap 8 and an upper steel mesh sheet 3 on the left side of the roof slab above the concrete pouring bottom template 1 of the pipe gallery roof slab, and providing a lower steel mesh sheet 5 on the right side of the roof slab and an upper steel mesh sheet 6 on the right side of the roof slab above the concrete pouring bottom template 1 of the pipe gallery roof slab on the right side of the deformation joint reserved space gap 8, characterized by the following steps:

[0031] The first step is to tie and fix the left annular steel frame 9 between the lower steel mesh sheet 2 on the left side of the top plate and the upper steel mesh sheet 3 on the left side of the top plate deformation joint reserved space gap 8, and the left annular steel frame 9 is provided with a left steel bar clip 10; tie and fix the right annular steel frame 11 between the lower steel mesh sheet 5 on the right side of the top plate and the upper steel mesh sheet 6 on the right side of the top plate deformation joint reserved space gap 8, and the right annular steel frame 11 is provided with a right steel bar clip 12;

[0032] The second step is to set the embedded rubber water stop 13 in the middle of the reserved space gap 8 of the top plate deformation joint, and clamp the left wing plate 14 of the embedded rubber water stop 13 into the left steel bar clamping hole 10, and clamp the right wing plate 15 of the embedded rubber water stop 13 into the right steel bar clamping hole 12;

[0033] The third step is to place the lower sand box (17) on the concrete pouring bottom template 1 of the pipe gallery roof just below the middle of the embedded rubber water stop (13), and then set the lower foam plate 16 between the middle of the embedded rubber water stop 13 and the upper top surface of the lower sand box 17; set an iron plate on the left vertical surface of the lower foam plate 16, and fix the left middle and lower cement pad 19 between the iron plate on the left vertical surface of the lower foam plate 16 and the left annular steel frame 9, and fix the left lower cement pad 18 between the left vertical surface of the lower sand box 17 and the left annular steel frame 9; set an iron plate on the right vertical surface of the lower foam plate 16, and fix the right middle and lower cement pad 21 between the iron plate on the right vertical surface of the lower foam plate 16 and the right annular steel frame 11, and fix the right lower cement pad 20 between the right vertical surface of the lower sand box 17 and the right annular steel frame 11;

[0034] The fourth step is to set an upper foam plate 22 in the reserved space gap 8 of the top plate deformation joint just above the embedded rubber water stop 13, set an upper sand box 23 on the upper top surface of the upper foam plate 22, set an iron sheet on the left vertical surface of the upper foam plate 22, set a left middle upper cement pad 26 between the iron sheet on the left vertical surface of the upper foam plate 22 and the left annular steel frame 9, set a left upper cement pad 24 between the upper sand box 23 and the left annular steel frame 9, set an iron sheet on the right vertical surface of the upper foam plate 22, set a right middle upper cement pad 27 between the iron sheet on the right vertical surface of the upper foam plate 22 and the right annular steel frame 11, and set a right upper cement pad 25 between the upper sand box 23 and the right annular steel frame 11;

[0035] Step 5: First, pour the top plate concrete on the left side of the reserved space gap 8 of the top plate deformation joint, so that the height of the first poured concrete layer 28 will submerge the lower left cement pad 18, and then pour the top plate concrete on the right side of the reserved space gap 8 of the top plate deformation joint, so that the height of the poured concrete layer will submerge the lower right cement pad 20; check whether the position of the lower foam plate 16 is displaced, and if so, adjust the lower foam plate 16 to the original position;

[0036] Step 6: Pour the top plate concrete on the left side of the reserved space gap 8 of the top plate deformation joint for the second time, so that the height 29 of the second poured concrete layer will submerge the left wing plate 14 of the embedded rubber waterstop 13, and then pour the top plate concrete on the right side of the reserved space gap 8 of the top plate deformation joint, so that the height of the second poured concrete layer will submerge the right wing plate 15 of the embedded rubber waterstop 13, check whether the positions of the upper foam plate 22 and the embedded rubber waterstop 13 are displaced, and if there is displacement, adjust the upper foam plate 22 and the embedded rubber waterstop 13 to the original position;

[0037] Step 7: pour the top slab concrete on the left side of the reserved space gap 8 of the top slab deformation joint for the third time, so that the height of the third pouring concrete layer 30 will submerge the upper left cement pad 24, and then pour the top slab concrete on the right side of the reserved space gap 8 of the top slab deformation joint, so that the height of the third pouring concrete layer will submerge the upper right cement pad 25;

[0038] Step 8. After the top slab concrete to be poured has initially set, remove the bottom template 1 for pouring the top slab concrete of the corridor, untie the binding wire 36 set between the box body 33 and the box cover 34, empty the fine sand 37 in the box body 33, take out the lower sand box 17 and the upper sand box 23, and fill the sealing paste in the groove formed after taking out the sand box to form an upper sealing paste strip 32 and a lower sealing paste strip 31.

[0039] The method for constructing the deformation joints on the two guide walls of the pipe gallery of the present invention and the deformation joints on the bottom plate is the same as the method for constructing the deformation joints on the top plate, and the entire water stop is connected together to form a closed water stop space.

Claims

1. A method for constructing a deformation joint construction structure of an underground cast-in-place concrete pipe gallery roof slab, comprising: providing a reserved space gap (8) for deformation joints on the pipe gallery roof slab concrete casting bottom template (1); providing a left side lower steel mesh sheet (2) and a left side upper steel mesh sheet (3) on the top of the pipe gallery roof slab concrete casting bottom template (1) on the left side of the reserved space gap (8) for deformation joints; providing a right side lower steel mesh sheet (5) and a right side upper steel mesh sheet (6) on the top of the pipe gallery roof slab concrete casting bottom template (1) on the right side of the reserved space gap (8); It is characterized by the following steps: The first step is to tie and fix a left annular steel frame (9) between the left lower steel mesh sheet (2) of the top plate and the left upper steel mesh sheet (3) of the top plate on the left side of the reserved space gap (8) of the top plate deformation joint, and to provide a left steel bar clip (10) on the left annular steel frame (9); to tie and fix a right annular steel frame (11) between the right lower steel mesh sheet (5) of the top plate and the right upper steel mesh sheet (6) of the top plate on the right side of the reserved space gap (8) of the top plate deformation joint, and to provide a right steel bar clip (12) on the right annular steel frame (11); Step 2: The embedded rubber water stop (13) is arranged in the middle of the reserved space gap (8) of the top plate deformation joint, and the left wing plate (14) of the embedded rubber water stop (13) is clamped into the left steel bar clamping opening (10), and the right wing plate (15) of the embedded rubber water stop (13) is clamped into the right steel bar clamping opening (12); Step 3: Place the lower sand box (17) on the concrete pouring bottom template (1) of the pipe gallery roof just below the middle of the embedded rubber water stop (13), and then set the lower foam plate (16) between the middle of the embedded rubber water stop (13) and the upper top surface of the lower sand box (17); set an iron plate on the left vertical surface of the lower foam plate (16), and fix the left middle lower cement pad (19) to the iron plate on the left vertical surface of the lower foam plate (16) and the left annular steel frame (9). The lower left cement pad (18) is fixedly connected between the left side elevation of the lower sand box (17) and the left annular steel frame (9); an iron plate is arranged on the right elevation of the lower foam plate (16), and the right middle lower cement pad (21) is fixedly connected between the iron plate on the right elevation of the lower foam plate (16) and the right annular steel frame (11), and the lower right cement pad (20) is fixedly connected between the right side elevation of the lower sand box (17) and the right annular steel frame (11); Step 4: an upper foam plate (22) is arranged in the reserved space gap (8) of the top plate deformation joint just above the embedded rubber water stop (13), an upper sand box (23) is arranged on the upper top surface of the upper foam plate (22), an iron sheet is arranged on the left vertical surface of the upper foam plate (22), a left middle upper cement pad (26) is arranged between the iron sheet on the left vertical surface of the upper foam plate (22) and the left annular steel frame (9), an upper left cement pad (24) is arranged between the upper sand box (23) and the left annular steel frame (9), an iron sheet is arranged on the right vertical surface of the upper foam plate (22), a right middle upper cement pad (27) is arranged between the iron sheet on the right vertical surface of the upper foam plate (22) and the right annular steel frame (11), and an upper right cement pad (25) is arranged between the upper sand box (23) and the right annular steel frame (11); Step 5: first pour the top plate concrete on the left side of the top plate deformation joint reserved space gap (8), so that the height of the first poured concrete layer (28) submerges the lower left cement pad (18), and then pour the top plate concrete on the right side of the top plate deformation joint reserved space gap (8), so that the height of the poured concrete layer submerges the lower right cement pad (20); check whether the position of the lower foam plate (16) is displaced, and if so, adjust the lower foam plate (16) to its original position; Step 6: pour the top slab concrete on the left side of the reserved space gap (8) of the top slab deformation joint for the second time, so that the height of the second poured concrete layer (29) will submerge the left wing plate (14) of the embedded rubber waterstop (13), and then pour the top slab concrete on the right side of the reserved space gap (8) of the top slab deformation joint, so that the height of the second poured concrete layer will submerge the right wing plate (15) of the embedded rubber waterstop (13), check whether the positions of the upper foam plate (22) and the embedded rubber waterstop (13) are displaced, and if there is any displacement, adjust the upper foam plate (22) and the embedded rubber waterstop (13) to their original positions; Step 7: pouring the top slab concrete on the left side of the top slab deformation joint reserved space gap (8) for the third time, so that the height of the third pouring concrete layer (30) submerges the upper left cement pad (24), and then pouring the top slab concrete on the right side of the top slab deformation joint reserved space gap (8) so that the height of the third pouring concrete layer submerges the upper right cement pad (25); Step 8: After the top slab concrete to be poured has initially set, the bottom template (1) for pouring the top slab concrete of the pipe gallery is removed, the binding wire (36) provided between the box body (33) and the box cover (34) is untied, the fine sand (37) in the box body (33) is emptied, the lower sand box (17) and the upper sand box (23) are taken out, and sealing paste is filled into the groove formed after the sand boxes are taken out to form an upper sealing paste strip (32) and a lower sealing paste strip (31).

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