CN114809074A - Construction method for horizontal prefabricated assembly type box-shaped channel of cast-in-place bottom plate - Google Patents
Construction method for horizontal prefabricated assembly type box-shaped channel of cast-in-place bottom plate Download PDFInfo
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- CN114809074A CN114809074A CN202210415912.XA CN202210415912A CN114809074A CN 114809074 A CN114809074 A CN 114809074A CN 202210415912 A CN202210415912 A CN 202210415912A CN 114809074 A CN114809074 A CN 114809074A
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- 238000010276 construction Methods 0.000 title claims abstract description 26
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000009415 formwork Methods 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 238000007790 scraping Methods 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 239000002689 soil Substances 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 230000008602 contraction Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000009417 prefabrication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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Abstract
The invention relates to a construction method of a horizontal prefabricated assembly type box-type channel of a cast-in-place bottom plate, which consists of prefabricated side plates, a prefabricated top plate and a cast-in-place bottom plate; the horizontal prefabricated formwork system consists of a prefabricated pedestal, a bearing plate, a sliding formwork, an L-shaped side formwork, a vertical jack, a bottom formwork and a top formwork; the whole L type that is of prefabricated pedestal, the loading board are located the lower extreme of prefabricated pedestal, and the vertical jack lower extreme is fixed on the loading board, and sliding formwork fixes in the vertical jack upper end, L type side form, die block and top mould use the bolt fastening respectively on prefabricated pedestal, the steel reinforcement framework of prefabricated curb plate is placed on prefabricated pedestal. The self-propelled pouring vibration device is used for pouring concrete of the cast-in-place bottom plate, the problem that large-scale operation mechanical equipment is difficult to enter in a narrow space is solved, the operation efficiency is improved, and the construction quality of the cast-in-place bottom plate is improved.
Description
Technical Field
The invention relates to construction of an assembled box-type channel, in particular to a horizontal prefabricated assembled box-type channel with a cast-in-place bottom plate and a construction method.
Background
For reducing the transportation, the hoist and mount operation degree of difficulty, when carrying out prefabricated box passageway construction, adopt assembled structure usually, divide into prefabricated curb plate, prefabricated roof and cast-in-place bottom plate with the box passageway. For promoting the wholeness of assembled box passageway, reserve the steel bar joint on prefabricated curb plate usually, make things convenient for the later stage to connect into a whole with cast-in-place bottom plate, provide reliable and stable support for prefabricated roof. However, the prefabricated side plates are integrally L-shaped and have an externally-leaked reserved steel bar structure, so that the difficulty of hoisting operation of formwork supporting and mold release agents is further increased. In addition, the prefabricated structure size is great, is difficult to carry out the accurate adjustment to prefabricated component's position during the concatenation operation, not only influences the concatenation precision of box passageway, still influences the waterproof performance of structure. In the pouring process of the cast-in-place bottom plate, large mechanical equipment is difficult to enter due to the narrow operation space in the channel, the operation efficiency is low, and the construction quality of the cast-in-place bottom plate is difficult to guarantee.
Disclosure of Invention
The invention aims to provide a construction method of a horizontal prefabricated assembly type box channel with a cast-in-place bottom plate, aiming at solving the problems in the construction process of the existing prefabricated assembly type box channel. In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a construction method for a horizontal prefabricated assembly type box channel of a cast-in-place bottom plate comprises the following specific steps:
step 1): after the earthwork is excavated to the designed elevation, arranging a tamping base layer on the undisturbed soil, pouring a concrete foundation on the tamping base layer, and arranging concrete support ribs at the edge of the concrete foundation;
step 2): manufacturing prefabricated side plates through a horizontal prefabricated formwork system, arranging embedded sleeves on two sides of the manufactured prefabricated side plates, hoisting the manufactured prefabricated side plates to a concrete foundation, enabling two prefabricated side plates to form a group, enabling the two prefabricated side plates of each group to be oppositely arranged, installing a telescopic limiting rod between the two opposite prefabricated side plates, adjusting the distance between the two prefabricated side plates through the telescopic limiting rod, installing a horizontal jack between the prefabricated side plates and a support rib, and adjusting the positions of the prefabricated side plates through the horizontal jack;
step 3): connecting adjacent prefabricated side plates into a whole by using connecting screw rods, and simultaneously penetrating the connecting screw rods through the embedded sleeves on the adjacent prefabricated side plates; hanging the prefabricated top plate on the prefabricated side plate, and withdrawing the telescopic limiting rod and the horizontal jack;
and step 4): binding cast-in-place bottom plate reinforcing steel bars, binding bottom plate stirrups and bottom plate longitudinal bars between the two prefabricated side plates, and binding and fixing the bottom plate stirrups and the bottom plate longitudinal bars with reserved joints arranged on the prefabricated side plates;
step 5): performing concrete pouring operation of the cast-in-place bottom plate between the prefabricated side plates by using a self-propelled pouring vibrating device;
step 6): and after the concrete of the cast-in-place bottom plate reaches 50% of the design strength, pouring micro-expansion concrete between the prefabricated side plates and the support ribs.
Preferably, the prefabricated side plate is provided with an embedded lifting hook, and the embedded lifting hook is arranged on the back face of the prefabricated side plate.
Preferably, in the step 1), the elevation of the top surface of the concrete foundation is equal to the elevation of the bottom surface of the cast-in-place bottom plate.
Preferably, in the step 2), the clear distance between the two prefabricated side plates in each group is equal to the clear distance of the box-shaped channel.
Preferably, in the step 3), rubber cushion layers are arranged at the joints of the two adjacent prefabricated side plates and the joints of the prefabricated side plates and the prefabricated top plate.
Preferably, in the step 2), the horizontal prefabricated formwork system consists of a prefabricated pedestal, a bearing plate, a sliding formwork, an L-shaped side formwork, a vertical jack, a bottom formwork and a top formwork; the prefabricated pedestal is integrally L-shaped, the bearing plate is positioned at the lower end of the prefabricated pedestal, the lower end of the vertical jack is fixed on the bearing plate, the sliding template is fixed at the upper end of the vertical jack, a steel bar through hole is formed in the sliding template, and a convex block is arranged on the top mold; the L-shaped side die, the bottom die and the top die are fixed on the prefabricated pedestal by bolts respectively; the framework of steel reinforcement of prefabricated curb plate is placed on prefabricated pedestal, and the reservation on the prefabricated curb plate connects and wears out from the reinforcing bar through-hole on the sliding template, set up pre-buried sleeve in the prefabricated curb plate, pre-buried sleeve one end is passed through the bolt and is temporarily fixed on prefabricated pedestal, and the pre-buried sleeve other end passes through the bolt and temporarily fixes on L type side form, all leaves the bolt hole corresponding with the pre-buried sleeve port on prefabricated pedestal and the L type side form, and the bolt passes and penetrates in pre-buried sleeve's port from the bolt hole on prefabricated pedestal and the L type side form to realize the temporary fixation to pre-buried sleeve.
Preferably, in the step 2), when the prefabricated side plate is manufactured, the sliding template is controlled to slide up and down through the extension and retraction of the vertical jack, so that the sliding template is conveniently separated from the prefabricated side plate.
Preferably, in the step 5), the self-propelled pouring vibrating device comprises a supporting pulley, a guide pulley, a supporting flat plate, a material storage box, a driving motor, a scraping vibrating plate and a vibrating machine, wherein the supporting pulley is arranged at the bottom of the supporting flat plate, the guide pulley is arranged on the side edge of the supporting flat plate, the material storage box and the driving motor are positioned on the supporting flat plate, the scraping vibrating plate is fixed at the rear part of the supporting flat plate by using a pull rod, two ends of the pull rod are respectively hinged with the supporting flat plate and the scraping vibrating plate, and the scraping vibrating plate is provided with a balancing weight and the vibrating machine; the support flat plate is provided with a feed opening, the feed opening is positioned in the material storage box, concrete is stored in the material storage box, and the concrete falls from the feed opening; the support pulleys are supported on the prefabricated side plates on two sides, the guide pulleys are supported on the surfaces of the prefabricated side plates on two sides, the self-propelled pouring vibrating device moves forwards along a box-shaped channel between the two prefabricated side plates to drive the scraping vibrating plate to vibrate and scrape concrete, two ends of the scraping vibrating plate are supported on the prefabricated side plates, and the concrete between the two prefabricated side plates forms a cast-in-place bottom plate after pouring is completed.
Preferably, four supporting pulleys are arranged, two corresponding supporting pulleys are connected through a wheel shaft, the driving motor is connected with one wheel shaft through a belt transmission mechanism, and the self-propelled pouring vibrating device is driven to move forwards through the driving motor.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
1. the horizontal prefabricated formwork system is adopted to perform prefabricated operation of the prefabricated side plates, and the embedded sleeves in the prefabricated side plates are fixed on the pedestal and the side mold through bolts, so that the displacement in the concrete pouring process is avoided, and the installation accuracy of the embedded sleeves is ensured; in the reserved through-hole on the reinforcing bar reserved joint inserted the sliding template, adjusted sliding template lapse through hydraulic jack during later stage form removal, convenient quick with sliding template and prefabricated curb plate separation, avoid haring the reinforcing bar reserved joint simultaneously.
2. Adopt the self-propelled vibrating device of pouring to pour the construction of cast-in-place bottom plate, solved the condition that large-scale operation mechanical equipment is difficult to get into under the narrow space, not only promoted the operating efficiency, still promoted the construction quality of cast-in-place bottom plate.
3. The concrete foundation outside sets up the support rib, not only provides reliable and stable support for prefabricated curb plate adjustment position, and the later stage pours the micro-expansion concrete into in supporting the rib, has guaranteed the intensity that prefabricated curb plate connects, has promoted the reliability of structure.
Drawings
FIG. 1 is a view showing the positional relationship among the components of a horizontal prefabricated formwork system;
FIG. 2 is a schematic diagram of a three-dimensional structure of a horizontal prefabricated formwork system in place;
FIG. 3 is a first schematic diagram of a prefabricated side panel demolding process;
FIG. 4 is a schematic view of a second process for demolding the prefabricated side panel;
FIG. 5 is a schematic three-dimensional structure of a prefabricated side panel;
FIG. 6 is a schematic view of the position adjustment of the prefabricated side panels;
FIG. 7 is a schematic illustration of a fabricated box gangway splice;
FIG. 8 is a schematic illustration of a prefabricated side panel splice;
FIG. 9 is a schematic illustration of the assembled box gangway in place;
FIG. 10 is a construction schematic view of a cast-in-place bottom plate of the fabricated box-type channel;
FIG. 11 is a schematic three-dimensional view of a self-propelled casting vibrator;
FIG. 12 is a schematic view of the construction completion of the fabricated box-type channel cast-in-place bottom plate.
The figure is marked with: 11-prefabricated pedestal, 12-bearing plate, 13-sliding template, 14-steel bar through hole, 15-vertical jack, 16-L-shaped side mold, 17-bottom mold, 18-top mold, 19-convex block, 110-bolt, 21-prefabricated side plate, 22-prefabricated top plate, 23-cast-in-place bottom plate, 31-steel bar skeleton, 32-reserved joint, 33-embedded sleeve, 34-embedded hook, 41-undisturbed soil, 42-compacted base layer, 43-concrete foundation, 44-supporting rib, 45-telescopic limiting rod, 46-horizontal jack, 51-bottom plate longitudinal bar, 52-bottom plate stirrup, 53-connecting screw rod, 54-rubber cushion layer, 55-micro-expansion concrete, 61-supporting pulley and 62-guide pulley, 63-supporting flat plate, 64-material storage box, 65-feed opening, 66-driving motor, 67-scraping vibrating plate, 68-counterweight, 69-vibrating machine and 610-pull rod.
Detailed Description
For a better understanding of the present invention, the following embodiments will be described in detail with reference to fig. 1 to 12, and the following embodiments are implemented on the premise of the technical solution of the present invention, and the detailed embodiments are given, but the scope of the present invention is not limited to the following embodiments.
The invention relates to a horizontal prefabricated assembly type box-type channel of a cast-in-place bottom plate, which consists of prefabricated side plates 21, prefabricated top plates 22 and cast-in-place bottom plates 23; the prefabricated side plates 21 are provided in two, and both ends of the prefabricated top plate 22 rest on the upper ends of the two prefabricated side plates 21. The prefabricated side plate 21 is prefabricated by adopting a horizontal prefabricated template system, and the horizontal prefabricated template system consists of a prefabricated pedestal 11, a bearing plate 12, a sliding template 13, an L-shaped side mold 16, a vertical jack 15, a bottom mold 17 and a top mold 18; prefabricated pedestal 11 wholly is the L type, and loading board 12 is located prefabricated pedestal 11's lower extreme, and vertical jack 15 lower extreme is fixed on loading board 12, and sliding template 13 fixes in vertical jack 15 upper end, there is reinforcing bar through-hole 14 on the sliding template 13, be equipped with lug 19 on the top mould 18, lug 19's appearance is the triangular prism, and the cross section is triangle-shaped. The convex blocks 19 can enable the prefabricated side plates 21 to form triangular positioning grooves on the prefabricated side plates 21 when the prefabricated side plates 21 are poured. The L-shaped side die 16, the bottom die 17 and the top die 18 are respectively fixed on the prefabricating base 11 by using bolts 110; prefabricated curb plate 21's framework of steel reinforcement 31 is placed on prefabricated pedestal 11, and the reservation on the prefabricated curb plate 21 connects 32 to wear out in the reinforcing bar through-hole 14 on the sliding template 13, set up embedded sleeve 33 in the prefabricated curb plate 21, embedded sleeve 33 one end is passed through bolt 110 and is temporarily fixed on prefabricated pedestal 11, and the embedded sleeve 33 other end is passed through bolt 110 and is temporarily fixed on L type side form 16, avoids embedded sleeve 33 to take place to shift pouring the in-process, guarantees that the later stage carries out the concatenation operation smoothly. Bolt holes corresponding to the ports of the embedded sleeves 33 are reserved in the prefabrication pedestal 11 and the L-shaped side die 16, and bolts 110 penetrate through the bolt holes in the prefabrication pedestal 11 and the L-shaped side die 16 and penetrate into the ports of the embedded sleeves 33, so that the embedded sleeves 33 are temporarily fixed. The embedded sleeve 33 is of an arc-shaped tubular structure and is in a quarter arc shape, and after the prefabricated side plate 21 is poured, two ends of the embedded sleeve 33 penetrate through the front face and the side face of the prefabricated side plate 21 respectively.
Preferably, set up pre-buried lifting hook 34 on prefabricated curb plate 21, pre-buried lifting hook 34 sets up the back at prefabricated curb plate 21, and convenient later stage is hung prefabricated curb plate 21 from prefabrication pedestal 11 fast away.
Preferably, the sliding template 13 can slide up and down, and the sliding template 13 is controlled by the extension and contraction of the vertical jack 15 to slide up and down, so that the sliding template 13 is conveniently separated from the prefabricated side plate 21, and the reserved joint 32 is not damaged.
The invention relates to a splicing construction method of a horizontal prefabricated assembly type box channel of a cast-in-place bottom plate, which is shown by combining the attached drawings 6-12 and adopts the following construction steps:
step 1, after the earth is excavated to the designed elevation, a tamping base layer 42 is arranged on the undisturbed soil 41, a concrete foundation 43 is poured on the tamping base layer 42, a concrete support rib 44 is arranged at the edge of the concrete foundation 43, and the elevation of the top surface of the concrete foundation 43 is equal to the elevation of the bottom surface of the cast-in-place bottom plate 23.
Step 2, after the concrete foundation 43 is poured, hoisting the prefabricated side plates 21 to the concrete foundation 43, setting two prefabricated side plates 21 in one group, placing the two prefabricated side plates 21 of each group oppositely, adjusting the positions of the prefabricated side plates 21 by using a telescopic limiting rod 45 and a horizontal jack 46, respectively supporting two ends of the telescopic limiting rod 45 against the prefabricated side plates 21, supporting one end of the horizontal jack 46 against the prefabricated side plates 21, and supporting the other end of the horizontal jack 46 against the supporting rib 44, as shown in fig. 6. The length of the telescopic limiting rod 45 is adjustable, the clear distance between the two prefabricated side plates 21 is equal to the clear distance of the box-shaped channel, the clear distance between the prefabricated side plates 21 is adjusted through the telescopic limiting rod 45, the transverse position of the prefabricated side plates 21 is adjusted through the horizontal jack 46, and the quick and accurate positioning of the prefabricated side plates 21 is achieved. Wherein, flexible gag lever post 45 includes a thread bush, and both sides in the thread bush are equipped with two sections internal threads that revolve to opposite respectively, and thread bush's both ends are connected with a lead screw respectively, and the external screw thread on two lead screws revolves to opposite, and two lead screws link to each other with two sections internal threads in the thread bush respectively, and the one end of keeping away from the thread bush on two lead screws all is equipped with one and supports the backup plate, supports the backup plate and is "L" shape. When the telescopic limiting rod 45 is used, the abutting plates at the two ends of the telescopic limiting rod 45 abut against the surfaces of the two prefabricated side plates 21 respectively, and the distance between the prefabricated side plates 21 is adjusted by rotating the threaded sleeve.
Step 3, after the prefabricated side plates 21 are placed in place, connecting the adjacent prefabricated side plates 21 into a whole by using connecting screw rods 53, wherein the connecting screw rods 53 penetrate through the embedded sleeves 33 on the adjacent prefabricated side plates 21; and (3) hanging the prefabricated top plate 22 on the prefabricated side plate 21, and withdrawing the telescopic limiting rod 45 and the horizontal jack 46, as shown in the figure 7. Rubber cushion layers 54 are arranged at the joints of the two adjacent prefabricated side plates 21 and the joints of the prefabricated side plates 21 and the prefabricated top plate 22, and the sealing performance between the joints of the components is improved by arranging the rubber cushion layers 54, as shown in fig. 8. The connecting screw 53 is in a half arc shape, the connecting screw 53 can completely penetrate through the embedded sleeves 33 on the two adjacent prefabricated side plates 21, and the two prefabricated side plates 21 are connected through nuts arranged at two ends of the connecting screw 53.
And 4, binding reinforcing steel bars of the cast-in-place bottom plate 23, binding a bottom plate hoop reinforcement 52 and a bottom plate longitudinal reinforcement 51 between the two prefabricated side plates 21, and binding and fixing the bottom plate hoop reinforcement 52 and the bottom plate longitudinal reinforcement 51 with the reserved joint 32 arranged on the prefabricated side plates 21, as shown in the attached drawing 9.
Step 5, using a self-propelled pouring vibrating device to perform concrete pouring operation of the cast-in-place bottom plate 23, as shown in the attached drawings 10 and 11: self-propelled pouring vibrating device includes support pulley 61, leading pulley 62, support flat 63, storage case 64, driving motor 66, strickles off vibrating plate 67 and vibrator 69, and support pulley 61 is installed in the bottom of supporting flat 63, and support pulley 61 is provided with four, links to each other through the shaft between two corresponding support pulleys, and driving motor 66 passes through belt drive mechanism and links to each other with one of them shaft, and it is preceding to pour vibrating device through driving motor 66 drive self-propelled. The guide pulley 62 is installed on the side of the supporting plate 63, the material storage box 64 and the driving motor 66 are located on the supporting plate 63, the scraping vibrating plate 67 is fixed behind the supporting plate 63 by using a pull rod 610, two ends of the pull rod 610 are hinged to the supporting plate 63 and the scraping vibrating plate 67 respectively, and a balancing weight 68 and a vibrating machine 69 are arranged on the scraping vibrating plate 67. The support flat plate 63 is provided with a feed opening 65, the feed opening 65 is positioned in the material storage box 64, the concrete is stored in the material storage box 64, and the concrete falls from the feed opening 65; the supporting pulleys 61 are supported on the prefabricated side plates 21 on two sides, the guide pulleys 62 are supported on the surfaces of the prefabricated side plates 21 on two sides, the self-propelled pouring vibrating device moves forwards along a box-shaped channel between the two prefabricated side plates 21 to drive the scraping vibrating plate 67 to vibrate and scrape concrete, and two ends of the scraping vibrating plate 67 are supported on the prefabricated side plates 21. The concrete between the two prefabricated side plates 21 forms a cast-in-place bottom plate 23 after the pouring is finished.
And 6, after the concrete of the cast-in-place bottom plate 23 reaches 50% of the design strength, pouring micro-expansion concrete 55 between the prefabricated side plate 21 and the support ribs 44, so that the connection strength of the prefabricated side plate is ensured, and the reliability of the structure is improved, as shown in the attached drawing 11.
The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (9)
1. The construction method of the horizontal prefabricated assembly type box channel of the cast-in-place bottom plate is characterized by comprising the following specific steps of:
step 1): after the earthwork is excavated to the designed elevation, arranging a tamping base layer (42) on the undisturbed soil (41), pouring a concrete foundation (43) on the tamping base layer (42), and arranging a concrete support rib (44) at the edge of the concrete foundation (43);
step 2): the method comprises the following steps of manufacturing prefabricated side plates (21) through a horizontal prefabricated formwork system, arranging embedded sleeves (33) on two sides of the manufactured prefabricated side plates (21), hoisting the manufactured prefabricated side plates (21) to a concrete foundation (43), enabling two prefabricated side plates (21) to be a group, enabling the two prefabricated side plates (21) in each group to be oppositely arranged, installing a telescopic limiting rod (45) between the two opposite prefabricated side plates (21), adjusting the distance between the two prefabricated side plates (21) through the telescopic limiting rod (45), installing horizontal jacks (46) between the prefabricated side plates (21) and support ribs (44) and adjusting the positions of the prefabricated side plates (21) through the horizontal jacks (46);
step 3): connecting adjacent prefabricated side plates (21) into a whole by using connecting screw rods (53), wherein the connecting screw rods (53) simultaneously penetrate through embedded sleeves (33) on the adjacent prefabricated side plates (21); the prefabricated top plate (22) is hung on the prefabricated side plate (21), and the telescopic limiting rod (45) and the horizontal jack (46) are withdrawn; step 4): binding reinforcing steel bars of a cast-in-place bottom plate (23), binding a bottom plate hoop reinforcement (52) and a bottom plate longitudinal reinforcement (51) between two prefabricated side plates (21), and binding and fixing the bottom plate hoop reinforcement (52) and the bottom plate longitudinal reinforcement (51) with a reserved joint (32) arranged on the prefabricated side plates (21);
step 5): performing concrete pouring operation of a cast-in-place bottom plate (23) between the prefabricated side plates (21) by using a self-propelled pouring vibrating device;
step 6): and after the concrete of the cast-in-place bottom plate (23) reaches 50% of the design strength, pouring micro-expansion concrete (55) between the prefabricated side plate 21 and the support ribs (44).
2. The construction method of the horizontal prefabricated assembly type box channel of the cast-in-place bottom plate according to claim 1, wherein embedded lifting hooks (34) are arranged on the prefabricated side plates (21), and the embedded lifting hooks (34) are arranged on the back surfaces of the prefabricated side plates (21).
3. The construction method of the horizontal prefabricated assembly type box channel of the cast-in-place bottom plate according to the claim 1, wherein in the step 1), the elevation of the top surface of the concrete foundation (43) is equal to the elevation of the bottom surface of the cast-in-place bottom plate (23).
4. The construction method of the horizontal prefabricated assembly type box channel of the cast-in-place bottom plate according to the claim 1, wherein in the step 2), the clear distance between two prefabricated side plates (21) of each group is equal to the clear distance of the box channel.
5. The construction method of the horizontal prefabricated assembly type box channel of the cast-in-place bottom plate according to the claim 1, wherein in the step 3), rubber cushion layers (54) are arranged at the joints of the two adjacent prefabricated side plates (21) and the joints of the prefabricated side plates (21) and the prefabricated top plate (22).
6. The construction method of the horizontal prefabricated assembly type box channel of the cast-in-place bottom plate according to the claim 1, wherein in the step 2), the horizontal prefabricated formwork system consists of a prefabricated pedestal (11), a bearing plate (12), a sliding formwork (13), an L-shaped side formwork (16), a vertical jack (15), a bottom formwork (17) and a top formwork (18); the prefabricated pedestal (11) is integrally L-shaped, the bearing plate (12) is positioned at the lower end of the prefabricated pedestal (11), the lower end of a vertical jack (15) is fixed on the bearing plate (12), a sliding template (13) is fixed at the upper end of the vertical jack (15), a steel bar through hole (14) is formed in the sliding template (13), and a convex block (19) is arranged on a top die (18); the L-shaped side die (16), the bottom die (17) and the top die (18) are respectively fixed on the prefabricating base (11) by using bolts (110); the steel bar framework (31) of prefabricated curb plate (21) is placed on prefabricated pedestal (11), wears out in steel bar through-hole (14) on prefabricated curb plate (21) on preformed joint (32) follow sliding formwork (13), set up pre-buried sleeve (33) in prefabricated curb plate (21), bolt (110) are passed through to pre-buried sleeve (33) one end and are temporarily fixed on prefabricated pedestal (11), and the bolt hole corresponding with pre-buried sleeve (33) port is all left on pre-buried sleeve (11) and L type side form (16) through bolt (110) the other end, and bolt (110) pass and penetrate in the port of pre-buried sleeve (33) from the bolt hole on prefabricated pedestal (11) and L type side form (16) to realize the temporary fixation to pre-buried sleeve (33).
7. The construction method of the horizontal prefabricated assembly type box channel of the cast-in-place bottom plate according to claim 6, wherein in the step 2), when the prefabricated side plate (21) is manufactured, the sliding template (13) is controlled to slide up and down through the expansion and contraction of the vertical jack (15), so that the sliding template (13) is conveniently separated from the prefabricated side plate (21).
8. The construction method of a cast-in-place floor horizontal prefabricated assembly type box channel according to any one of claims 1 to 7, the self-propelled pouring and vibrating device is characterized in that in the step 5), the self-propelled pouring and vibrating device comprises a supporting pulley (61), a guide pulley (62), a supporting flat plate (63), a material storage box (64), a driving motor (66), a scraping vibrating plate (67) and a vibrating machine (69), the supporting pulley (61) is installed at the bottom of the supporting flat plate (63), the guide pulley (62) is installed at the side edge of the supporting flat plate (63), the material storage box (64) and the driving motor (66) are located on the supporting flat plate (63), the scraping vibrating plate (67) is fixed behind the supporting flat plate (63) through a pull rod (610), two ends of the pull rod (610) are respectively hinged with the supporting flat plate (63) and the scraping vibrating plate (67), and a balancing weight (68) and a vibrating machine (69) are arranged on the scraping vibrating plate (67); a feed opening (65) is formed in the supporting flat plate (63), the feed opening (65) is located in the storage box (64), concrete is stored in the storage box (64), and the concrete falls from the feed opening (65); the supporting pulleys (61) are supported on the prefabricated side plates (21) on two sides, the guide pulleys (62) are supported on the surfaces of the prefabricated side plates (21) on two sides, the self-propelled pouring vibrating device moves forwards along a box-shaped channel between the two prefabricated side plates (21) to drive the scraping vibrating plate (67) to vibrate and scrape concrete, two ends of the scraping vibrating plate (67) are supported on the prefabricated side plates (21), and the concrete between the two prefabricated side plates (21) forms a cast-in-place bottom plate (23) after pouring is completed.
9. The construction method of the horizontal prefabricated assembly type box channel of the cast-in-place bottom plate according to claim 8, wherein four supporting pulleys (61) are arranged, two corresponding supporting pulleys (61) are connected through a wheel shaft, a driving motor (66) is connected with one wheel shaft through a belt transmission mechanism, and the self-propelled casting vibration device is driven to move forwards through the driving motor (66).
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