Support plate construction control device and precast beam construction method using the same

Abstract

The application discloses a support plate construction control device, which comprises a support plate provided with a bottom mould below, pre-buried bolt holes are formed on the support plate corresponding to each pre-buried sleeve, positioning through holes are formed on the bottom mould corresponding to each pre-buried bolt hole, a beam manufacturing base is provided with grooves corresponding to each positioning through hole, and each groove is provided with a positioning assembly; the positioning assembly comprises a positioning column and an elastic piece. The application also discloses a prefabricated beam construction method using the support plate construction control device, which simultaneously realizes accurate positioning and rapid installation of the support plate, prevents concrete slurry from entering the pre-buried bolt holes of the support plate, and automatically releases the displacement limitation between the support plate and the bottom mould in the horizontal direction, thereby ensuring the construction quality of the prefabricated beam and effectively improving the construction efficiency of the prefabricated beam.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of precast beam construction. More particularly, the present application relates to a support plate construction control device and a precast beam construction method using the same. BACKGROUND

[0002] In the process of box girder prefabrication, it is necessary to pre-bury a support plate on a bottom mold, and the positioning accuracy of the support plate directly affects the subsequent erection of the prefabricated beam. The side of the support plate away from the bottom mold is usually fixedly provided with a plurality of pre-buried sleeves, and the support plate is provided with bolt holes in communication with the pre-buried sleeves. During the pouring of the beam body concrete, the concrete slurry is easy to enter the pre-buried sleeves through the gap between the support plate and the bottom mold, affecting the subsequent bridge support installation. In the prestressed tensioning process after the pouring of the beam body concrete, the beam body concrete will shrink and apply force to the support plate to cause displacement of the support plate relative to the bottom mold. The most commonly used construction method for pre-burying the support plate in the prior art is to fix the support plate on the bottom mold by bolt connection or welding before hoisting the main structure steel of the box girder. Among them, the welding method, i.e. welding the support plate on the bottom mold of the precast beam, mainly relies on measurement to place it to the designed position, and the positioning accuracy and efficiency are low, and the problem of concrete slurry entering the pre-buried sleeve cannot be solved, and it is difficult to remove the fixed connection between the two before the prestressed tensioning process, thereby limiting the shrinkage of the beam body and affecting the construction quality of the precast beam. The bolt connection method fixes the support plate on the bottom mold by bolts, which requires additional holes on the support plate, and cannot solve the problem of concrete slurry entering the pre-buried sleeve. In the prestressed tensioning process, the nuts at the bottom of the bottom mold need to be loosened, and the part of the bolt exposed to the bottom mold is chiseled off, but this method cannot completely remove the displacement restriction of the support plate. SUMMARY

[0003] An object of the present application is to solve at least the above problems and to provide at least the advantages to be described later.

[0004] To achieve these objects and other advantages in accordance with the present application, a support plate construction control device is provided, comprising:

[0005] a support plate provided below a bottom mold; a plurality of pre-buried sleeves fixedly provided on the side of the support plate away from the bottom mold; a pre-buried bolt hole provided on the support plate corresponding to each of the pre-buried sleeves; and a positioning through hole provided on the bottom mold corresponding to each of the pre-buried bolt holes, the diameter of the positioning through hole being greater than that of the pre-buried bolt hole.

[0006] The beam manufacturing base is used for placing the bottom die and the support plate; grooves are formed in the beam manufacturing base corresponding to the positioning through holes; and positioning assemblies are arranged in the grooves; the positioning assembly comprises a positioning column and an elastic member, one end of the elastic member is fixedly connected with the inner bottom of the groove, the other end is fixedly connected with the bottom of the positioning column, and a ball head member is arranged at the top of the positioning column; the ball head member penetrates through the corresponding positioning through hole under the action of the elastic member and partially extends into the embedded bolt hole.

[0007] Preferably, a stopper assembly is further included, which comprises a stopper pad and a folding device; the diameter of the stopper pad is not less than the diameter of the embedded bolt hole, and the stopper pad is movably connected with the top of the ball head member; a through groove is formed in the center of the ball head member and the positioning column; and the folding device is arranged in the groove to fold the stopper pad into the through groove.

[0008] Preferably, the stopper pad is formed by splicing two semicircular pads, and semicircular support plates are fixedly arranged at the bottoms of the two semicircular pads; the diameter of the support plate is the same as the diameter of the embedded bolt hole.

[0009] Preferably, the folding device comprises:

[0010] a vertical column arranged in the through groove;

[0011] two first sliding groove members symmetrically arranged on both sides of the vertical column, the first sliding groove members are arranged obliquely downward, and the higher end is fixedly connected with the top of the vertical column; a first sliding groove is formed in the first sliding groove member along the length direction of the first sliding groove member; the bottoms of the two support plates are respectively provided with first sliding rods, and one first sliding rod corresponds to sliding along one first sliding groove;

[0012] a transmission device arranged between the positioning column and the vertical column through a support frame, so as to transmit the downward movement of the positioning column to the vertical column; and the support frame is fixedly arranged in the groove.

[0013] Preferably, a second sliding groove member corresponding to the bottom of each support plate is further included, a second sliding groove is formed in the second sliding groove member along the length direction of the second sliding groove member, the longitudinal axis of the second sliding groove member is perpendicular to the straight side of the semicircular pad; a containing groove is formed in the ball head member corresponding to the two second sliding groove members; and a second sliding rod is arranged at the top of the through groove corresponding to the two second sliding groove members, and one second sliding rod corresponds to sliding along one second sliding groove.

[0014] Preferably, the transmission device comprises:

[0015] two groups of first gear racks, which are symmetrically arranged at the bottom end of the inner wall of the through groove;

[0016] Two groups of second racks, two groups of the first rack respectively corresponding to the bottom end of the column is provided;

[0017] A group of the first rack and the corresponding second rack are respectively provided with a speed regulating gear set, the speed regulating gear set is rotationally connected with the support frame, to transmit the downward movement of the positioning column to the column, and make the downward speed of the column greater than the downward speed of the positioning column.

[0018] The application also has an object to provide a prefabricated beam construction method using the support plate construction control device, comprising the following steps:

[0019] S1, installing the positioning assembly and the stopper assembly in each of the grooves on the beam manufacturing pedestal, then installing the bottom die on the beam manufacturing pedestal, making the ball head of each of the positioning assembly correspondingly extend to each of the positioning through holes on the bottom die, then brushing the release agent on the bottom die;

[0020] S2, installing the support plate on the bottom die, making the ball head of each of the positioning assembly correspondingly extend to each of the embedded bolt holes on the support plate;

[0021] S3, binding the beam body reinforcement framework and the protection layer cushion block, installing the beam body embedded part and the prestressed pipe positioning and forming;

[0022] S4, installing the end die and the side die, then hoisting the bridge deck plate reinforcement and installing the bridge embedded part;

[0023] S5, beam body concrete pouring and maintenance, after the beam body concrete strength meets the requirements, sequentially removing the side die and the end die;

[0024] S6, inserting the prestressed steel strand into the prestressed pipe, and performing prestressed tensioning;

[0025] S7, prestressed pipe grouting, anchor sealing and maintenance;

[0026] S8, beam body waterproof layer and protection layer construction, after the quality inspection is qualified, moving the beam into the warehouse.

[0027] Preferably, in step S6, the force applied to the ball head of each of the positioning assembly by the shrinkage of the beam body during the prestressed tensioning process makes each of the positioning column move downward to the ball head away from the corresponding embedded bolt hole, at the same time, the transmission device drives the column to move downward, and then drives the two half circle pads to close and enter the through groove.

[0028] The application at least has the following beneficial effects:

[0029] 1. The support plate construction control device provided by the present application, when installing the support plate, each embedded bolt hole is aligned with the ball head part of each positioning device, and each ball head part is clamped into each embedded bolt hole, thereby achieving accurate positioning and quick installation of the support plate, without the need for additional holes in the support plate, and without affecting the strength of the support plate itself. Under the action of the elastic part, the ball head part partially extends into the embedded bolt hole to close the corresponding embedded bolt hole, preventing concrete slurry from entering the embedded bolt hole from the gap between the support plate and the bottom mold during the construction of the beam body. In the subsequent prestressed tensioning process of the prefabricated beam body, the positioning assembly can automatically release the horizontal displacement restriction between the support plate and the bottom mold, the support plate can move relative to the bottom mold, avoiding affecting the tensioning process and thereby affecting the construction quality of the prefabricated beam, and without the need for manual intervention, effectively improving the construction efficiency of the prefabricated beam.

[0030] 2. The support plate construction control device provided by the present application, the stop slurry assembly composed of the stop slurry pad and the folding device ensures the closing effect of each embedded bolt hole, and during the downward movement of the positioning column, the stop slurry pad is folded and completely received in the through slot in the ball head part and the positioning column, without restricting the displacement of the support plate in the prestressed tensioning process.

[0031] 3. The prefabricated beam construction method provided by the present application, through the support plate construction control device, accurate positioning and quick installation of the support plate, prevention of concrete slurry from entering the embedded bolt hole of the support plate, and automatic release of the horizontal displacement restriction between the support plate and the bottom mold are simultaneously achieved, ensuring the construction quality of the prefabricated beam and effectively improving the construction efficiency of the prefabricated beam.

[0032] Other advantages, objects, and features of the present application will be apparent from the following description, and will be understood by those skilled in the art upon reading and understanding the present application. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A sectional view of the support plate construction control device of the present application is shown in the figure;

[0034] Figure 2 A partial enlarged view of A in Figure 1

[0035] Figure 3 A top view of the ball head part of the present application is shown in the figure;

[0036] Figure 4 A top view of the stop slurry pad of the present application is shown in the figure;

[0037] Figure 5 A sectional view of the stop slurry assembly of the present application is shown in the figure;

[0038] Figure 6 ​A structural schematic view when the gasket is fully accommodated in the barrel groove of the present application;

[0039] Figure 7 A top view of the first sliding groove member and the second sliding groove member of the present application; DETAILED DESCRIPTION

[0040] The present application will be further described in conjunction with the accompanying drawings, so that those skilled in the art can implement the present application according to the description and the drawings.

[0041] It should be noted that the experimental methods in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified; in the description of the present application, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0042] As shown in Figure 1 The present application provides a support plate construction control device, which comprises:

[0043] A support plate 3 is provided below a bottom die 2; a plurality of embedded sleeves 4 are fixedly arranged on the side of the support plate 3 away from the bottom die 2; embedded bolt holes 31 are formed in the support plate 3 corresponding to each embedded sleeve 4; positioning through holes 21 are formed in the bottom die 2 corresponding to each embedded bolt hole 31, and the diameter of the positioning through hole 21 is greater than that of the embedded bolt hole 31;

[0044] A beam manufacturing pedestal 1 is used to place the bottom die 2 and the support plate 3; grooves 11 are formed in the beam manufacturing pedestal 1 corresponding to each positioning through hole 21, and a positioning assembly 5 is arranged in each groove 11; the positioning assembly 5 comprises a positioning column 51 and an elastic member 52, one end of the elastic member 52 is fixedly connected with the inner bottom of the groove 11, the other end is fixedly connected with the bottom of the positioning column 52, and a ball head member 511 is arranged at the top of the positioning column 52; under the action of the elastic member 52, the ball head member 511 passes through the corresponding positioning through hole 21 and partially extends into the embedded bolt hole 31.

[0045] In the above technical solution, the positioning assembly 5 is installed into each recess 11 before the support plate is installed, and then when the bottom die 2 is installed on the beam manufacturing bench 1, the ball head 511 of each positioning assembly 5 is inserted into the positioning through hole 211 on the bottom die 2. When the support plate 31 is installed, the precise positioning and quick installation of the support plate 31 are achieved by aligning each pre-buried bolt hole 31 with each ball head 511 and inserting each ball head 511 into each pre-buried bolt hole 31. Under the action of the elastic member 51, the ball head 511 partially extends into the pre-buried bolt hole 31 to close the pre-buried bolt hole 31, preventing concrete slurry from entering the pre-buried sleeve 4 from the gap between the support plate 3 and the bottom die 2 during the beam body concrete construction. In the subsequent tensioning process of the precast beam body, the beam body will shrink under the action of the tensioning force, at which time the ball head 511 moves back to the positioning through hole 21 under the action of the shrinkage force overcoming the force of the elastic member 52, so that in the tensioning process, the positioning assembly 5 can automatically release the horizontal displacement restriction between the support plate 3 and the bottom die 2, and the support plate 3 can move relative to the bottom die 2, avoiding affecting the tensioning process and thereby affecting the construction quality of the precast beam. Referring to Figure 1 and Figure 2 , specifically, the ball head 511 can have a hemispherical structure with the same diameter as the positioning column 51, and the two can be an integrally formed structure.

[0046] To further ensure the sealing performance of the ball head 511 to the pre-buried bolt hole 31, in another embodiment, the support plate construction control device further comprises a slurry stopping assembly 6, which comprises a slurry stopping pad 61 and a folding device 62; the diameter of the slurry stopping pad 61 is not less than the diameter of the pre-buried bolt hole 21, and the top of the slurry stopping pad 61 is movably connected with the ball head 511; a through groove 512 is formed in the center of the ball head 511 and the positioning column 51, and the folding device 62 is arranged in the recess 11 to fold the slurry stopping pad 61 and store it in the through groove 512. The slurry stopping pad 61 can be a conventional sealing rubber pad, and more preferably, the diameter of the slurry stopping pad 61 is slightly larger than the diameter of the pre-buried bolt hole 21, so that the slurry stopping pad 61 is easily placed in the pre-buried bolt hole 21 and the sealing effect can be guaranteed. Referring to Figure 2 and Figure 3 , the through groove 512 is arranged vertically through the center of the ball head 511 and the positioning column 51, and its shape and size can be designed according to the size of the slurry stopping pad 61, as long as the slurry stopping pad 61 can be completely stored in the through groove 512, so that the slurry stopping pad 61 does not affect the movement of the support plate 3 relative to the bottom die 2 in the tensioning process.

[0047] In another embodiment, such as Figure 4 As shown, the grout-stopping pad 61 is formed by splicing two semi-circular pads 611. A semi-circular support plate 612 is fixedly installed at the bottom of each of the two semi-circular pads 611. The diameter of the support plate 612 is the same as the diameter of the pre-embedded bolt hole 31. When folding is required, the two semi-circular pads 611 are closed using the folding device 62, i.e., the grout-stopping pad 61 is folded in half. Considering the flexibility of the grout-stopping pad 61, the support plate 612 supports the semi-circular pads 611 from below and drives the semi-circular pads 611 to close during the folding process. (Refer to...) Figure 5 To facilitate the folding of the grout-stopping pad 61, the adjacent straight edges of the two semicircular pads 611 can be set as inclined surfaces.

[0048] In another embodiment, the folding device 62 includes:

[0049] The column 621 is vertically installed within the through groove 512;

[0050] Two first sliding groove components 628 are symmetrically arranged on both sides of the column. The first sliding groove component 628 is inclined downward and its higher end is fixedly connected to the top of the column 621. A first sliding groove is formed on the first sliding groove component 628 along its length direction. The bottom of the two support plates 612 is respectively provided with a first sliding rod 629. One first sliding rod 629 slides along one first sliding groove.

[0051] A transmission device is provided between the positioning column 51 and the column 621 via a support frame 624, for transmitting the downward movement of the positioning column 51 to the column 621; the support frame 624 is fixedly provided in the groove.

[0052] like Figure 5 As shown, before the tensioning process, the top surface of the column 621 is flush with the top surface of the ball head 511. At this time, the two first sliding rods 629 are located at the highest end of the first sliding groove 628, and the two semi-circular pads 611 are horizontally arranged and spliced ​​together to form the grout-stopping pad 61, which is used to seal the pre-embedded bolt hole 31. When the beam is tensioned, when the positioning column 51 is subjected to force and moves downward, the transmission device simultaneously drives the column 621 to move downward. At this time, the straight edges of the two semi-circular pads 611 move downward first, and the two semi-circular pads 611 move downward and close together, and finally completely enter the through groove 512. During the downward movement of the semi-circular pads 611, the first sliding rods 629 move along the first sliding groove simultaneously, referring to... Figure 6 When the anti-grout pad 61 is completely folded in half and retracted into the through groove 512, the first slide rod 629 is at the lowest end of the first slide groove.

[0053] Furthermore, such asFigures 5 to 7 To ensure the stable folding of the dam pad 61, the folding device 6 further comprises a second sliding groove member 626 arranged at the bottom of each of the support plates 612, and a second sliding groove is formed in the length direction of the second sliding groove member 626, and the longitudinal axis of the second sliding groove member 626 is perpendicular to the straight edge of the semicircular pad 611. The ball head member 511 is provided with a receiving groove 513 corresponding to each of the second sliding groove members 626, and the top of the through groove 512 is provided with a second sliding rod 627 corresponding to each of the second sliding groove members 626, and each of the second sliding rods 627 slides along a second sliding groove. When the two semicircular pads 611 are in a horizontal state, the second sliding rod 627 is located at one end of the second sliding groove member 626 close to the vertical column 621. When the dam pad 61 is folded, the second sliding groove member 626 rotates with the support plate 612 towards the vertical column 621 and moves downward, and the second sliding rod 627 is located at the other end of the second sliding groove member 626. Figure 6 When the dam pad 61 is completely folded and received in the through groove 512, the second sliding rod 627 is located at the other end of the second sliding groove member. The width of the receiving groove 513 is matched with the size of the second sliding groove member 626, so that the second sliding groove member 626 can be clamped in the receiving groove 513 when it is in a horizontal state.

[0054] In another embodiment, the transmission device comprises:

[0055] Two groups of first gear racks 622 are symmetrically arranged at the bottom of the inner wall of the through groove 512;

[0056] Two groups of second gear racks 625 are arranged at the bottom of the vertical column respectively corresponding to the two groups of first gear racks 622;

[0057] A speed regulating gear set 623 is arranged between each of the first gear racks 622 and the corresponding second gear racks 625, and the speed regulating gear set 623 is rotationally connected with the support frame 624, so as to transmit the downward movement of the positioning column 51 to the vertical column 621, and make the downward movement speed of the vertical column 621 greater than the downward movement speed of the positioning column 51.

[0058] The downward movement of the positioning column 51 is transmitted to the stand column 621 through the meshing transmission between the first rack 622 and the second rack 625 and the speed regulating gear set 623, so that the stand column 621 can be lowered at the same time when the positioning column 51 is lowered. And considering that the diameter of the stop grout pad 61 is greater than the height of the ball head member 511 extending into the embedded bolt hole 31, in order to make the ball head member 511 completely separate from the embedded bolt hole 31, the stop grout pad 61 is simultaneously or has been completely received in the barrel groove 512, the speed regulating gear set 623 is arranged to make the descending speed of the stand column 621 greater than the descending speed of the positioning column 51. Specifically, referring to Figure 5 , the speed regulating gear set 623 can include a pinion one meshing with the first rack 622, a gear wheel coaxially arranged with the pinion one, and a pinion two meshing with the gear wheel and the second rack 625 at the same time, the pinion one, the gear wheel and the pinion two are respectively rotationally connected with the support frame 624 through rotating shafts, and in specific use, the diameters, the tooth numbers, the tooth distances and other parameters of the gears can be selected according to the transmission ratio requirements.

[0059] The application also provides a precast beam construction method using the support plate construction control device, including the following steps:

[0060] S1, the positioning assembly 5 and the stop grout assembly 6 are installed in each of the grooves 11 on the beam manufacturing seat 1, then the bottom die 2 is installed on the beam manufacturing seat 1, the ball head member 511 of each of the positioning assemblies 5 is correspondingly extended to each of the positioning through holes 21 on the bottom die 2, and then the release agent is brushed on the bottom die 2;

[0061] S2, the support plate 3 is installed on the bottom die 2, so that the ball head member 511 of each of the positioning assemblies 5 is correspondingly extended into each of the embedded bolt holes 31 on the support plate 3;

[0062] S3, the beam body reinforcement framework and the protection layer cushion block are bound, the beam body embedded part and the prestressed pipeline positioning and forming are installed;

[0063] S4, the end die and the side die are installed, then the bridge deck reinforcement is hoisted and installed, and the bridge deck embedded part is installed;

[0064] S5, the beam body concrete is poured and maintained, and after the strength of the beam body concrete meets the requirements, the side die and the end die are removed in sequence;

[0065] S6, the prestressed steel strand is inserted into the prestressed pipeline, and prestressed tensioning is performed;

[0066] S7, the prestressed pipeline is grouted, the anchor is sealed, and the maintenance is performed;

[0067] S8, the beam body waterproof layer and the protection layer are constructed, and the beam is moved into the warehouse after the quality inspection is qualified.

[0068] In the above technical solution, each of the grooves 11, the embedded bolt holes 31 and the positioning through holes 21 are completed when the beam manufacturing seat, the bottom die and the support plate are manufactured. First, the positioning assembly 5 and the stopper assembly 6 are installed in each of the grooves 11, and the accurate positioning and rapid installation of the support plate 3 are realized by the positioning assembly 5 in steps S1 and S2, at this time, the two semicircular pads 611 are placed in a horizontal state on the top surface of the ball head piece 511 and are closed with the embedded bolt hole 311 together, avoiding the slurry entering the embedded bolt hole and then entering the sleeve when the concrete is poured in step S5, which affects the installation of the bridge support in the subsequent sequence.

[0069] Further, in the connection mode of the traditional support plate and the bottom die, the fixed connection between the two must be removed before the beam body prestress tensioning, so as to cancel the limitation of the displacement of the support plate with the beam body. But the support plate construction control device provided by the application can automatically remove the displacement limitation of the support plate during prestress tensioning, specifically, in step S6, the shrinkage of the beam body concrete during prestress tensioning applies a force to the ball head piece 511 of each positioning assembly 5, which makes each positioning column 51 move downward to the ball head piece 511 away from the corresponding embedded bolt hole 31, at the same time, the transmission device drives the vertical column 621 to move downward, and then drives the two semicircular pads 611 to close and enter the through groove 512.

[0070] After the beam body prestress tensioning is completed, prestress pipe grouting, anchor sealing and maintenance are carried out, and then the beam body waterproof layer and protection layer construction and maintenance are carried out in sequence, and the product quality is inspected and qualified, and then the beam is moved into the warehouse, and the precast beam construction is completed.

[0071] Although the embodiments of the application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and can be fully applied to various fields suitable for the application, and other modifications can be easily realized by those skilled in the art, therefore, the application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A support plate construction control device, characterized by, The utility model relates to a support plate is provided with the bottom die under the bottom die, and the bottom die is fixedly provided with a plurality of preburied sleeve on the side away from the support plate, and the support plate is provided with preburied bolt hole corresponding to each preburied sleeve, and the bottom die is provided with positioning through -hole corresponding to each preburied bolt hole, and the diameter of positioning through -hole is greater than preburied bolt hole. Beam making pedestal is used to place the bottom die and the support plate, and the beam making pedestal is provided with recess corresponding to each positioning through -hole, and each recess is provided with positioning assembly, and the positioning assembly comprises positioning column and elastic element, one end of the elastic element is fixedly connected with the inner bottom of the recess, the other end is fixedly connected with the bottom of the positioning column, and the top of the positioning column is provided with ball head part, and the ball head part passes through corresponding positioning through -hole under the action of the elastic element and partially extends into the preburied bolt hole. The utility model further includes the stop group component, and the stop group component comprises stop group pad and folding device, the diameter of stop group pad is not less than the diameter of preburied bolt hole, and the top of ball head part is movably connected with stop group pad, the center of ball head part and positioning column is provided with through groove that penetrates up and down, and folding device is arranged in recess and is used to fold stop group pad and is received in through groove. The stop group pad is formed by splicing two semicircular pads, and each semicircular pad is fixedly provided with a semicircular support plate at the bottom, and the diameter of the support plate is the same as that of the preburied bolt hole. The folding device comprises: a vertical column is vertically arranged in the through groove; two first sliding groove parts are symmetrically arranged on both sides of the vertical column, and the first sliding groove part is arranged obliquely downward, and the higher end is fixedly connected with the top of the vertical column; a first sliding groove is formed on the first sliding groove part along the length direction, and the bottom of each support plate is provided with a first sliding rod, and one first sliding rod corresponds to one first sliding groove; a transmission device is arranged between the positioning column and the vertical column through a support frame, and is used to transmit the downward movement of the positioning column to the vertical column; the support frame is fixedly arranged in the recess. Two second sliding groove parts are arranged corresponding to the bottoms of the two support plates, a second sliding groove is formed on the second sliding groove part along the length direction, and the longitudinal axis of the second sliding groove part is perpendicular to the straight edge of the semicircular pad; a receiving groove is formed on the ball head part corresponding to the two second sliding groove parts, and a second sliding rod is arranged on the top of the through groove corresponding to the two second sliding groove parts, and one second sliding rod corresponds to one second sliding groove. The transmission device comprises:

2. The support plate construction control device according to claim 1, wherein two groups of first gear racks are symmetrically arranged at the bottom of the inner wall of the through groove; 3. The support plate construction control device of claim 1, wherein two groups of second gear racks are arranged at the bottom of the vertical column corresponding to the two groups of first gear racks; a speed regulating gear set is arranged between one first gear rack and the corresponding second gear rack, and the speed regulating gear set is rotatably connected with the support frame, and is used to transmit the downward movement of the positioning column to the vertical column, and make the downward speed of the vertical column greater than the downward speed of the positioning column. The utility model relates to a support plate is provided with the bottom die under the bottom die, and the bottom die is fixedly provided with a plurality of preburied sleeve on the side away from the support plate, and the support plate is provided with preburied bolt hole corresponding to each preburied sleeve, and the bottom die is provided with positioning through -hole corresponding to each preburied bolt hole, and the diameter of positioning through -hole is greater than preburied bolt hole. Beam making pedestal is used to place the bottom die and the support plate, and the beam making pedestal is provided with recess corresponding to each positioning through -hole, and each recess is provided with positioning assembly, and the positioning assembly comprises positioning column and elastic element, one end of the elastic element is fixedly connected with the inner bottom of the recess, the other end is fixedly connected with the bottom of the positioning column, and the top of the positioning column is provided with ball head part, and the ball head part passes through corresponding positioning through -hole under the action of the elastic element and partially extends into the preburied bolt hole.

4. A method of constructing a precast beam using the construction control device of any one of claims 1 to 3, characterized by, The utility model further includes the stop group component, and the stop group component comprises stop group pad and folding device, the diameter of stop group pad is not less than the diameter of preburied bolt hole, and the top of ball head part is movably connected with stop group pad, the center of ball head part and positioning column is provided with through groove that penetrates up and down, and folding device is arranged in recess and is used to fold stop group pad and is received in through groove. The stop group pad is formed by splicing two semicircular pads, and each semicircular pad is fixedly provided with a semicircular support plate at the bottom, and the diameter of the support plate is the same as that of the preburied bolt hole. The folding device comprises: a vertical column is vertically arranged in the through groove; two first sliding groove parts are symmetrically arranged on both sides of the vertical column, and the first sliding groove part is arranged obliquely downward, and the higher end is fixedly connected with the top of the vertical column; a first sliding groove is formed on the first sliding groove part along the length direction, and the bottom of each support plate is provided with a first sliding rod, and one first sliding rod corresponds to one first sliding groove; a transmission device is arranged between the positioning column and the vertical column through a support frame, and is used to transmit the downward movement of the positioning column to the vertical column; the support frame is fixedly arranged in the recess. Two second sliding groove parts are arranged corresponding to the bottoms of the two support plates, a second sliding groove is formed on the second sliding groove part along the length direction, and the longitudinal axis of the second sliding groove part is perpendicular to the straight edge of the semicircular pad; a receiving groove is formed on the ball head part corresponding to the two second sliding groove parts, and a second sliding rod is arranged on the top of the through groove corresponding to the two second sliding groove parts, and one second sliding rod corresponds to one second sliding groove. The transmission device comprises: two groups of first gear racks are symmetrically arranged at the bottom of the inner wall of the through groove; two groups of second gear racks are arranged at the bottom of the vertical column corresponding to the two groups of first gear racks; a speed regulating gear set is arranged between one first gear rack and the corresponding second gear rack, and the speed regulating gear set is rotatably connected with the support frame, and is used to transmit the downward movement of the positioning column to the vertical column, and make the downward speed of the vertical column greater than the downward speed of the positioning column. The utility model relates to a support plate is provided with the bottom die under the bottom die, and the bottom die is fixedly provided with a plurality of preburied sleeve on the side away from the support plate, and the support plate is provided with preburied bolt hole corresponding to each preburied sleeve, and the bottom die is provided with positioning through -hole corresponding to each preburied bolt hole, and the diameter of positioning through -hole is greater than preburied bolt hole. S1, installing the positioning assembly and the stopper assembly in each of the grooves on the beam manufacturing seat, then installing the bottom die on the beam manufacturing seat, making the ball head of each of the positioning assemblies correspondingly extend through the positioning through hole on the bottom die, then brushing the release agent on the bottom die; S2, installing the support plate on the bottom die, making the ball head of each of the positioning assemblies correspondingly extend into the pre-buried bolt hole on the support plate; S3, binding the beam body steel reinforcement framework and the protection layer cushion block, installing the beam body pre-buried part and the prestressed pipeline positioning and forming; S4, installing the end die and the side die, then hoisting the bridge deck plate steel reinforcement and installing the bridge deck pre-buried part; S5, pouring and maintaining the beam body concrete, and sequentially removing the side die and the end die after the beam body concrete strength meets the requirements; S6, threading the prestressed steel strand into the prestressed pipeline, and performing prestressed tensioning; S7, prestressed pipeline grouting, anchor sealing and maintenance; S8, beam body waterproof layer and protection layer construction, and moving the beam into the warehouse after the quality inspection is qualified.

5. The precast beam construction method of claim 4, wherein In step S6, the force exerted by the shrinkage of the beam body on the ball head of each of the positioning assemblies during the prestressed tensioning process makes each of the positioning columns move downward to make the ball head move away from the corresponding pre-buried bolt hole, and meanwhile, the transmission device drives the vertical column to move downward, thereby driving the two half-circle pads to close and enter the through groove.

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