Grid beam matching precast mold and its construction method

Abstract

The present invention provides a precast mold for grid beam matching and its construction method. The bottom mold is arranged on a mobile trolley, and the mobile trolley is arranged on a track. One end of the bottom mold is provided with a fixed end mold frame, and the other end is provided with a mobile end mold frame. Outer mold frames are arranged on both sides of the bottom mold, and the outer mold frames on both sides and the mobile end mold frame are all connected to the mold through demolding screw rods; a mobile inner core mold frame is also arranged inside the bottom mold. Through reasonable design of the mold structure, such as the connection mode of each component, the setting of the demolding screw rods, etc., the operations of assembling, adjusting and demolding the mold are made more convenient and efficient, thereby reducing the labor intensity of workers during the construction process and improving the construction efficiency.

Description

Technical Field

[0001] The present invention relates to the field of port grid beam construction, and in particular to a grid beam matching precast mold and its construction method. Background Art

[0002] In the construction of large ship launching ways in our country, pier-type launching ways and grid beam-type launching ways are two common types. The grid beam-type launching way shows obvious advantages in many aspects. Economically, compared with other types of launching ways, it may be more reasonable in terms of material use, construction cost, etc., and can effectively reduce construction costs; from the perspective of construction risks, perhaps its structural design or construction technology can reduce potential risk hazards during construction and improve construction safety; in terms of construction period, its unique structure and construction process may help shorten the overall construction cycle; for environmental protection, it may have less impact on the surrounding environment during construction and better meet environmental protection requirements. However, the construction precision control requirements of the grid beam-type launching way are quite high, which is a major challenge it faces. The construction precision of the grid beam includes two key parts: precast precision and installation precision. The precast precision is related to the dimensional accuracy, shape regularity, etc. of the grid beam during the factory precast stage, while the installation precision affects the matching degree with other structures and the overall structural stability of the grid beam during on-site installation. Unfortunately, currently in the field of construction, there is precisely a lack of construction methods specifically for effectively controlling the precast precision of grid beams, which to a certain extent restricts the full play of the advantages of the grid beam-type launching way and also brings difficulties to the high-quality construction of related projects. Summary of the Invention

[0003] The main purpose of the present invention is to provide a grid beam matching precast mold and its construction method to solve the problem of the lack of construction methods for effectively controlling the precast precision of grid beams.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: A grid beam matching precast mold, the bottom mold is arranged on a mobile trolley, the mobile trolley is arranged on a track, one end of the bottom mold is provided with a fixed end head mold frame, the other end is provided with a movable end head mold frame, and both sides of the bottom mold are provided with outer mold frames. The outer mold frames on both sides and the movable end head mold frame are all connected to the template through demolding screws;

[0005] A movable inner core mold frame is further arranged inside the bottom mold.

[0006] In a preferred solution, on both sides of the end face of the fixed end head mold frame, there are fixed end side formworks, between the fixed end side formworks on both sides, there is a fixed end concave formwork, the fixed end concave formwork is fixed on the fixed end head mold frame, and on both sides of the fixed end head mold frame, there are first wing formworks hinged, and the first wing formworks are connected to the fixed end head mold frame through fourth demolding screws.

[0007] In the preferred solution, the top of the outer mold frame is connected to the top of the side formwork through the second demolding screw rod, the middle position of the side formwork is connected to the outer mold frame through the third demolding screw rod, and the bottom of the side formwork is joined to the hinge seat;

[0008] The hinge seat is provided with a waist-shaped hole, and the bottom of the side formwork is arranged inside the waist-shaped hole.

[0009] In the preferred solution, movable side formworks are arranged on both sides of the movable end head mold frame, and at least two first demolding screw rods are arranged on the same vertical line of the movable side formworks and connected to the ground;

[0010] An inner concave mold frame at the movable end is arranged between the movable side formworks on both sides.

[0011] In the preferred solution, the inner concave mold frame at the movable end includes an inner concave template at the movable end. Third wing templates are hinged at both ends of the inner concave template at the movable end. The middle of the third wing template is connected to the inner concave template at the movable end through a plurality of fifth demolding screw rods, and brackets are connected between the fifth demolding screw rods on both sides;

[0012] The inner concave template at the movable end of the inner concave mold frame at the movable end is connected to the template of the movable inner core mold frame through a plurality of transverse tie rods.

[0013] In the preferred solution, the bottom of the movable inner core mold frame leans against the bottom mold. The movable inner core mold frame includes two left inner core templates and a right inner core template. Fourth wing templates are hinged at both ends of the left inner core template and the right inner core template. Oblique angle blocks are provided at the ends of the fourth wing templates. The wing templates of the left inner core template and the right inner core template are closed through two matching oblique angle blocks;

[0014] The fourth wing template is connected to the left inner core template through a plurality of sixth demolding screw rods, and the fourth wing templates on both sides are connected through a plurality of support inner frames.

[0015] In the preferred solution, the left inner core template and the right inner core template are connected to the side formwork of the outer mold frame through a plurality of longitudinal tie rods.

[0016] In the preferred solution, a plurality of three-way jacks are further arranged on both sides of the bottom of the movable trolley, and pads are arranged on one side of each three-way jack;

[0017] Driving motors are also arranged on the rollers at the bottom of the movable trolley, and the driving motors are connected to the rollers.

[0018] In the preferred solution, the well-beam prefabrication yard should include: a steel bar processing area, a well-beam prefabrication area, a well-beam pre-assembly area, and a well-beam temporary storage area;

[0019] The steel bar processing area is provided with steel bar pedestals matching the well-beams;

[0020] The well-beam dedicated prefabrication yard is provided with gantry lifting equipment, and the method includes:

[0021] S1. Position the first set of mobile trolleys, move and position them along the track axis, and position the three-way jacks;

[0022] S2. Level the bottom formwork with the three-way jacks, leveling in the direction perpendicular to the track axis and the elevation;

[0023] S3. Place the shoring in position, remove the three-way jacks, and support the entire mobile trolley with the shoring;

[0024] S4. After accurately positioning the fixed end side formwork and the fixed end concave formwork of the fixed end formwork, install them;

[0025] S5. After accurately positioning the side formwork of the two sets of outer formworks, install them;

[0026] S6. After accurately positioning the movable side formwork of the movable end formwork, install it;

[0027] S7. Lift and place the steel reinforcement cage into the formwork, accurately position it, and fix it after ensuring the cover thickness;

[0028] S8. After accurately positioning the left inner core formwork and the right inner core formwork of the movable inner core formwork, install them, then install the movable end inner concave formwork through the transverse tie rods, and connect and install and fix it with the side formwork through the longitudinal tie rods;

[0029] S9. Pour the precast beam, and remove the two sets of outer formworks after the strength reaches the requirements, and the specific sequence is carried out in accordance with the principle of "install last, remove first";

[0030] S10. After the two sets of outer formworks and the movable inner core formwork are removed, position the three-way jacks and remove the shoring;

[0031] S11. Use the three-way jacks to lower the mobile trolley onto the track;

[0032] S12. Move the poured precast beam to the matching beam position through the first set of mobile trolleys;

[0033] Lift the second set of mobile trolleys to the precast beam position by a gantry crane, and repeat steps S1 to S3 to accurately position the second set of mobile trolleys at the precast beam;

[0034] S13. Taking the second set of mobile trolleys at the accurately positioned precast beam as the standard, adjust the first set of mobile trolleys at the matching beam through steps S1 to S3 to achieve the purpose of matching the precast beam with the matching beam;

[0035] S14. Repeat steps S4 to S7 to accurately position and install the fixed end formwork, the two sets of outer formworks, the steel reinforcement cage, and the movable inner core formwork, and repeat step S9 to pour the precast beam;

[0036] S15. When the strength of the beam to be matched reaches 75% of the design strength, it is transferred to the pre-assembly area of the grid beam by a lifting device for pre-assembly. The first set of moving trolleys is hoisted aside and waiting to be installed at the precast beam.

[0037] S16. Remove the support pads of the precast beam and move the precast beam segment to the matching beam segment. Use a gantry crane to hoist the first set of moving trolleys to the position of the precast beam, and repeat steps S1 to S9 to continue constructing the next precast grid beam.

[0038] In the preferred solution, before constructing each grid beam, precise positioning should be carried out on the formwork system. The positioning method of the formwork system should combine the formwork structure and process requirements, set fixed measurement control points, and adjust the formwork and matching beam segments to the preset fixed positions by measuring the plane position and elevation of the measurement control points; the formwork measures the control points of the measurement control points by using a total station and a lidar for point cloud scanning to obtain three-dimensional point data, and based on artificial intelligence vision and total station positioning, to detect whether the position of the formwork reaches the preset position.

[0039] The method is as follows:

[0040] A1. Set fixed measurement control points at the construction site according to the formwork structure and process requirements; use a total station and a lidar to scan these points to obtain the three-dimensional coordinate data of each measurement control point ( ). Here is just the acquisition of raw data without specific formula derivation; these data are the basis for subsequent calculations and are used to determine the benchmark of the entire positioning system.

[0041] A2. Use artificial intelligence vision technology to identify reference points ( ) on the formwork, and use a total station to measure their actual coordinates; similarly, this step is mainly to obtain data; the data of these formwork reference points will be used for comparative analysis with the data of the measurement control points to determine the position state of the formwork.

[0042] A3. Construct a relative coordinate matrix: Calculate the relative coordinate vector of each formwork reference point relative to each measurement control point ; Let the components of the relative coordinate vector in the x, y, and z directions be , then:

[0043] ;

[0044] ;

[0045] ;

[0046] Relative coordinate matrix , where each row corresponds to the relative coordinate vector of a measurement control point to all template reference points; the role of this matrix is to comprehensively describe the positional relationship of the template reference points relative to the measurement control points, facilitating subsequent various position analyses and judgments;

[0047] Calculate the relative distance matrix according to the relative coordinate vectors , where the relative distance is calculated using the following formula:

[0048] ;

[0049] This formula is used to accurately quantify the spatial distance between each template reference point and the measurement control point. By analyzing this distance matrix, the positional deviation of the template in space can be intuitively understood, which is an important basis for judging whether the template reaches the preset position;

[0050] A4. Template position judgment stage: For each template reference point , calculate its average relative distance to all measurement control points :

[0051] ;

[0052] Average relative distance vector ; This vector comprehensively reflects the overall distance situation between each template reference point and the measurement control point. By comparing with a preset threshold, it can be preliminarily judged whether the position of the template meets the requirements;

[0053] Calculate the position deviation vector relative to the ideal position; Let the average position of the measurement control points be , where:

[0054] ;

[0055] ;

[0056] ;

[0057] The components of the position deviation vector in the x, y, z directions are:

[0058] ;

[0059] ;

[0060] ;

[0061] Position deviation vector This vector can further analyze the deviation direction and magnitude of the template reference points relative to the ideal position, providing more detailed information for template adjustment;

[0062] A5. Template position determination: Set the position deviation threshold ; If for all template reference points , there is and , where is the direction deviation threshold, it is considered that the template has reached the preset position;

[0063] Otherwise, the template position does not meet the requirements and needs to be adjusted; By comprehensively considering the average relative distance and the magnitude of the position deviation vector, it is possible to more comprehensively and accurately determine whether the template position is qualified;

[0064] A6. Template position adjustment stage:

[0065] For the template reference points that have not reached the preset position , calculate the adjustment vector ; Assuming that the adjustment strategy is to adjust in the opposite direction of the position deviation vector and the adjustment amount is proportional to the deviation amount, then:

[0066] ;

[0067] ;

[0068] ;

[0069] This adjustment vector clarifies the amount that the template reference points need to be adjusted in each direction. According to this vector, construction workers can be guided to precisely adjust the template;

[0070] Perform adjustment operations on the template according to the calculated adjustment vector; After the adjustment is completed, repeat the data collection and preprocessing stage, the relative position relationship calculation stage, and the template position judgment stage again to re-detect the template position until the template reaches the preset position.

[0071] The present invention provides a grid beam matching precast mold and its construction method. The grid beam matching precast mold and its construction method provided by the invention reduce the working intensity of workers. Through reasonable mold structure design, such as the connection method of each component, the setting of the demoulding screw rod, etc., the operations of mold assembly, adjustment, and demoulding are made more convenient and efficient, thereby reducing the labor intensity of workers during construction and improving construction efficiency. At the same time, the coordinated work of components such as the mobile trolley and three-way jack of the mold also helps to achieve precise construction, further optimizing the construction process and indirectly reducing the work burden of workers. Description of the Drawings

[0072] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0073] Figure 1 is the elevation view of the grid beam trolley and formwork system of the present invention;

[0074] Figure 2 is the plan view of the grid beam trolley and formwork system of the present invention;

[0075] Figure 3 is the side view of the grid beam trolley and formwork system of the present invention;

[0076] Figure 4 is the schematic diagram of the trolley and jack positioning of the present invention;

[0077] Figure 5 is the structural diagram of the formwork after disassembly of the present invention;

[0078] Figure 6 is the structural diagram of the formwork after disassembling the side formwork of the present invention;

[0079] Figure 7 is the structural diagram of the installation of the two end formworks of the present invention;

[0080] Figure 8 is the structural diagram of the movable inner core formwork of the present invention;

[0081] Figure 9 is the structural diagram of the grid beam hoisting of the present invention;

[0082] Figure 10 is the structural diagram of the bottom formwork hoisting of the present invention.

[0083] In the figure: bottom formwork 1; fixed end formwork frame 2; fixed end side formwork 201; fixed end concave formwork 202; first wing formwork 203; fourth demolding screw rod 204;

[0084] outer formwork frame 3; side formwork 301; hinge seat 302; second demolding screw rod 303; third demolding screw rod 304;

[0085] movable end formwork frame 4; first demolding screw rod 401; movable side formwork 402;

[0086] movable inner core formwork 5; left inner core formwork 501; support inner frame 502; sixth demolding screw rod 503; fourth wing formwork 504; bevel block 505; right inner core formwork 506;

[0087] support pad 6; three-way jack 7; movable trolley 8; drive motor 801; track 9;

[0088] movable end inner concave formwork frame 10; third wing formwork 1001; fifth demolding screw rod 1002; movable end concave formwork 1003;

[0089] Transverse tie rod 11; longitudinal tie rod 12; lifting equipment 13. Specific implementation mode

[0090] Embodiment 1

[0091] As Figures 1-10 shown, a grid beam matching precast mold, the bottom mold 1 is arranged on the mobile trolley 8, the mobile trolley 8 is arranged on the track 9, one end of the bottom mold 1 is provided with a fixed end head mold frame 2, the other end is provided with a mobile end head mold frame 4, and outer mold frames 3 are arranged on both sides of the bottom mold 1. The outer mold frames 3 and the mobile end head mold frame 4 on both sides are connected to the template through demolding lead screws;

[0092] A mobile inner core mold frame 5 is further arranged inside the bottom mold 1.

[0093] In a preferred solution, fixed end side formboards 201 are arranged on both sides of the end face of the fixed end head mold frame 2. A fixed end concave template 202 is arranged between the fixed end side formboards 201 on both sides. The fixed end concave template 202 is fixed on the fixed end head mold frame 2. First wing formboards 203 are hinged on both sides of the fixed end head mold frame 2. The first wing formboards 203 are connected to the fixed end head mold frame 2 through fourth demolding lead screws 204.

[0094] In a preferred solution, the top of the outer mold frame 3 is connected to the top of the side formboard 301 through a second demolding lead screw 303. The middle position of the side formboard 301 is connected to the outer mold frame 3 through a third demolding lead screw 304. The bottom of the side formboard 301 is hinged to the hinge seat 302;

[0095] A kidney-shaped hole is arranged on the hinge seat 302, and the bottom of the side formboard 301 is arranged inside the kidney-shaped hole.

[0096] In a preferred solution, mobile side formboards 402 are arranged on both sides of the mobile end head mold frame 4. At least two first demolding lead screws 401 are arranged on the same vertical line of the mobile side formboards 402 and are connected to the ground;

[0097] An active end inner concave mold frame 10 is arranged between the mobile side formboards 402 on both sides.

[0098] In a preferred solution, the active end inner concave mold frame 10 includes an active end inner concave template 1003. Third wing formboards 1001 are hinged at both ends of the active end inner concave template 1003. The middle of the third wing formboards 1001 is connected to the active end inner concave template 1003 through a plurality of fifth demolding lead screws 1002. The fifth demolding lead screws 1002 on both sides are connected through a bracket;

[0099] The active end inner concave template 1003 of the active end inner concave mold frame 10 is connected to the template of the mobile inner core mold frame 5 through a plurality of transverse tie rods 11.

[0100] In a preferred embodiment, the movable inner core formwork 5 is bottom-rested on the bottom form 1. The movable inner core formwork 5 includes two left inner core formwork plates 501 and a right inner core formwork plate 506. Fourth wing formwork plates 504 are hinged at both ends of the left inner core formwork plate 501 and the right inner core formwork plate 506. A bevel block 505 is provided at the end of the fourth wing formwork plate 504. The wing formwork plates of the left inner core formwork plate 501 and the right inner core formwork plate 506 are closed by two cooperating bevel blocks 505.

[0101] The fourth wing formwork plate 504 is connected to the left inner core formwork plate 501 by multiple sixth demolding screw rods 503. The fourth wing formwork plates 504 on both sides are connected by multiple support inner frames 502.

[0102] In a preferred embodiment, the left inner core formwork plate 501 and the right inner core formwork plate 506 are connected to the side formwork plate 301 of the outer formwork 3 by multiple longitudinal tie rods 12.

[0103] In a preferred embodiment, multiple three-way jacks 7 are further provided on both sides of the bottom of the movable trolley 8. A support pad 6 is provided on one side of each three-way jack 7.

[0104] A drive motor 801 is further provided on the roller at the bottom of the movable trolley 8. The drive motor 801 is connected to the roller.

[0105] The movable trolley 8 provides the moving function for the entire mold. The roller is driven by the drive motor 801 to move on the track 9, facilitating the conversion of the mold between different construction positions.

[0106] The three-way jack 7 is used to adjust the levelness and elevation of the bottom form 1 to ensure the accuracy of mold installation. During the mold positioning process, first level the bottom form 1 through the three-way jack 7. After leveling in the direction perpendicular to the track axis and adjusting the elevation, the support pad 6 is placed in position to support the entire movable trolley 8, and then the three-way jack 7 is removed.

[0107] The fixed end formwork 2, the outer formwork 3, and the movable end formwork 4 are all connected to the corresponding formwork by demolding screw rods. The demolding screw rods facilitate the removal operation of the formwork after the concrete is poured and formed. For example, the outer formwork 3 is connected to the side formwork plate 301 by the second demolding screw rod 303 and the third demolding screw rod 304, which not only ensures the stability of the formwork during pouring but also facilitates demolding.

[0108] The special structural design of the movable inner core formwork 5, such as the cooperation of the hinged fourth wing formwork plate 504 and the bevel block 505, enables flexible operation during mold assembly and demolding. At the same time, it is connected to the movable end inner female mold formwork 10 by the transverse tie rod 11 and to the side formwork plate 301 of the outer formwork 3 by the longitudinal tie rod 12, enhancing the integrity and stability of the entire mold structure.

[0109] The structural design of the movable end inner die holder 10 plays a specific forming and connecting role in the mold through the connection method between the third wing template 1001 and the movable end inner concave template 1003 and the connection with the movable inner core mold holder 5, ensuring that the shape and structure of the grid beam during prefabrication meet the design requirements.

[0110] Embodiment 2

[0111] Further illustrated in combination with Embodiment 1, as Figures 1-10 shown in the structure, the grid beam prefabrication yard should include: a steel bar processing area, a grid beam prefabrication area, a grid beam pre-assembly area, and a grid beam temporary storage area;

[0112] The steel bar processing area is provided with a steel bar pedestal matching the grid beam;

[0113] A gantry lifting device 13 is provided in the dedicated grid beam prefabrication yard, and the method includes:

[0114] S1. Position the first set of movable trolleys 8 and move and position them along the axis direction of the track 9, and the three-way jack 7 is in place;

[0115] S2. Level the bottom mold 1 through the three-way jack 7, leveling in the direction perpendicular to the track axis and the elevation;

[0116] S3. The shims 6 are in place, the three-way jack 7 is removed, and the shims 6 support the entire movable trolley 8;

[0117] S4. After the fixed end side template 201 and the fixed end inner concave template 202 of the fixed end die holder 2 are accurately positioned, they are installed;

[0118] S5. After the side templates 301 of the two sets of outer die holders 3 are accurately positioned, they are installed;

[0119] S6. After the movable side template 402 of the movable end die holder 4 is accurately positioned, it is installed;

[0120] S7. The steel reinforcement cage is hoisted into the mold, accurately positioned, and fixed after ensuring the protective layer thickness;

[0121] S8. After the left inner core template 501 and the right inner core template 506 of the movable inner core mold holder 5 are accurately positioned, they are installed, and then the movable end inner die holder 10 is installed through the transverse tie rod 11 and connected and fixed with the side template 301 through the longitudinal tie rod 12;

[0122] S9. Pour the precast beam, and after the strength reaches the requirement, remove the two sets of outer die holders 3, and the specific order is carried out according to the principle of "install last, remove first";

[0123] S10. After the two sets of outer die holders 3 and the movable inner core mold holder 5 are removed, the three-way jack 7 is in place, and the shims 6 are removed;

[0124] S11. Use the three-way jack 7 to lower the moving trolley 8 onto the track 9;

[0125] S12. Move the precast beam that has been poured to the matching beam position through the first set of moving trolleys 8;

[0126] The second set of moving trolleys is lifted to the precast beam position by a gantry crane, and steps S1 to S3 are repeated to accurately position the second set of moving trolleys at the precast beam;

[0127] S13. Taking the second set of moving trolleys at the accurately positioned precast beam as the standard, the first set of moving trolleys 8 at the matching beam position is adjusted through steps S1 to S3 to achieve the purpose of matching the precast beam with the matching beam;

[0128] S14. Repeat steps S4 to S7 to accurately position and install the fixed end formwork 2, two sets of outer formworks 3, steel reinforcement cages, and moving inner formwork 5, and repeat step S9 to pour the precast beam;

[0129] S15. When the strength of the matching beam reaches 75% of the design strength, transfer it to the grid beam pre-assembly area for pre-assembly through the lifting equipment 13, and lift the first set of moving trolleys 8 to one side for installation at the precast beam;

[0130] S16. Remove the support pads of the precast beam and move the precast beam segment to the matching beam segment, lift the first set of moving trolleys 8 to the precast beam position with a gantry crane, and repeat steps S1 to S9 to continue constructing the next precast grid beam.

[0131] 1. Advantages of the construction process

[0132] The construction process is systematic and orderly. Starting from the positioning of the moving trolley 8, operations such as leveling the bottom formwork 1 and positioning the support pads 6 are carried out in sequence, and each step is closely connected.

[0133] After the first set of moving trolleys 8 is accurately positioned along the axis direction of the track 9 and the three-way jack 7 is in place, the levelness and elevation of the bottom formwork 1 are precisely adjusted through the three-way jack 7, and then the moving trolley 8 is supported by the support pads 6, ensuring the stability of the mold installation foundation, providing an accurate benchmark for subsequent formwork installation, reducing the error accumulation caused by uneven or unstable foundation, and improving the overall construction accuracy.

[0134] The formwork installation is accurately positioned and installed in the order of the fixed end formwork 2, outer formwork 3, and mobile end formwork 4, and is fixed after the steel reinforcement cage is hoisted into the mold and accurately positioned to ensure the protection layer thickness. Finally, the moving inner formwork 5 and related connecting components are installed. This order helps to ensure the accurate position of each component in the mold and guarantees the structural integrity and dimensional accuracy of the grid beam.

[0135] After the concrete is poured, the formwork is removed following the principle of "removing the later-installed formwork first", which is beneficial to protecting the formed precast beam structure, avoiding damage to the beam body caused by improper removal sequence, and facilitating the removal operation of the formwork, thus improving the turnover efficiency of the formwork.

[0136] The mobile trolley 8 is used to move the poured precast beam to the position of the matching beam, and the first set of mobile trolley 8 is adjusted based on the accurately positioned second set of mobile trolley, realizing the precise matching of the precast beam and the matching beam, ensuring the connection accuracy between the grid beams, and improving the stability and reliability of the overall structure.

[0137] After the strength of the matching beam reaches 75% of the design strength, pre-assembly is carried out, and the lifting and reuse of the trolley are reasonably arranged, improving the utilization rate of construction equipment. At the same time, the pre-assembly link helps to discover and solve potential problems in advance, further ensuring the construction quality.

[0138] 2. Advantages in coordination with the mold structure

[0139] The structural characteristics of each component in the mold cooperate with the construction method. For example, the outer formwork frame 3 and the side formwork 301 are connected by the demoulding screw rods at specific positions, which can ensure the stability of the side formwork 301 during pouring and is also convenient for removal at the appropriate time according to the construction process. The connection method of the movable inner formwork frame 5 with other components, such as connecting with the movable end inner concave formwork frame 10 through the transverse tie rod 11 and connecting with the side formwork 301 of the outer formwork frame 3 through the longitudinal tie rod 12, ensures the coordinated work of each component at different construction stages in the construction process, guarantees the integrity and stability of the mold structure, and thus improves the precision and quality of the grid beam precast.

[0140] Components such as the three-way jack 7 and the drive motor 801 at the bottom of the mobile trolley 8 play a key role in the construction process. The three-way jack 7 provides guarantee for the precise leveling of the bottom formwork 1, while the drive motor 801 facilitates the movement of the mobile trolley 8 on the track 9, making the conversion of the mold between different areas of the precast yard more convenient and efficient, closely integrating with the entire construction process, and improving the construction efficiency.

[0141] Embodiment 3

[0142] Further illustrated in combination with Embodiment 2, as Figures 1-10 shown in the structure, before the construction of each grid beam, the formwork system should be accurately positioned. The positioning method of the formwork system should combine the formwork structure and process requirements, set fixed measurement control points, and adjust the formwork and the matching beam section to the preset fixed position through the measurement of the plane position and elevation of the measurement control points; the measurement and control of the formwork for the measurement control points use total station and lidar to perform point cloud scanning on the measurement control points to obtain three-dimensional point data, and according to artificial intelligence vision and total station positioning, to detect whether the position of the formwork reaches the preset position;

[0143] The method is as follows:

[0144] A1. Set fixed measurement control points at the construction site according to the formwork structure and process requirements; use a total station and lidar to scan these points to obtain the three-dimensional coordinate data of each measurement control point ( ). Here is just the acquisition of raw data without specific formula derivation; these data are the basis for subsequent calculations and are used to determine the benchmark of the entire positioning system;

[0145] A2. Use artificial intelligence vision technology to identify the reference points on the formwork ( ), and use a total station to measure their actual coordinates; similarly, this step is mainly for data acquisition; the data of these formwork reference points will be used for comparative analysis with the measurement control point data to determine the position state of the formwork;

[0146] A3. Construct a relative coordinate matrix: Calculate the relative coordinate vector of each formwork reference point relative to each measurement control point ; Let the components of the relative coordinate vector in the x, y, and z directions be respectively, then: ;

[0147] ;

[0148] ;

[0149] ;

[0150] The relative coordinate matrix , where each row corresponds to the relative coordinate vector of a measurement control point and all formwork reference points; the role of this matrix is to comprehensively describe the position relationship of the formwork reference points relative to the measurement control points, which is convenient for subsequent various position analyses and judgments;

[0151] Calculate the relative distance matrix according to the relative coordinate vector, where the relative distance is calculated using the following formula:

[0152] ;

[0153] This formula is used to accurately quantify the spatial distance between each formwork reference point and the measurement control point. By analyzing this distance matrix, the position deviation of the formwork in space can be intuitively understood, which is an important basis for judging whether the formwork reaches the preset position;

[0154] A4. Template position judgment stage: For each template reference point , calculate its average relative distance from all measurement control points :

[0155] ;

[0156] Average relative distance vector ; This vector comprehensively reflects the overall distance situation between each template reference point and the measurement control points. By comparing it with a preset threshold, it can be preliminarily judged whether the position of the template meets the requirements;

[0157] Calculate the position deviation vector relative to the ideal position; Let the average position of the measurement control points be , where:

[0158] ;

[0159] ;

[0160] ;

[0161] The components of the position deviation vector in the x, y, z directions are:

[0162] ;

[0163] ;

[0164] ;

[0165] Position deviation vector ; This vector can further analyze the deviation direction and magnitude of the template reference point relative to the ideal position, providing more detailed information for template adjustment;

[0166] A5. Template position determination: Set the position deviation threshold ; If for all template reference points , there are both and , where is the direction deviation threshold, then it is considered that the template has reached the preset position;

[0167] Otherwise, the template position does not meet the requirements and needs to be adjusted; By comprehensively considering the average relative distance and the magnitude of the position deviation vector here, it is possible to more comprehensively and accurately judge whether the template position is qualified;

[0168] A6. Template position adjustment stage:

[0169] For the template reference points that have not reached the preset positions , calculate the adjustment vector ; Assume that the adjustment strategy is to adjust in the opposite direction of the position deviation vector, and the adjustment amount is proportional to the deviation amount, then:

[0170] ;

[0171] ;

[0172] ;

[0173] This adjustment vector specifies the amount of adjustment required for the template reference points in each direction. Based on this vector, construction workers can be guided to precisely adjust the template;

[0174] Perform adjustment operations on the template according to the calculated adjustment vector; After the adjustment is completed, repeat the data acquisition and preprocessing stage, the relative position relationship calculation stage, and the template position judgment stage again to re-detect the template position until the template reaches the preset position.

[0175] 1. Advantages of the accuracy and comprehensiveness of the positioning method

[0176] Set fixed measurement control points in combination with the template structure and process requirements, obtain three-dimensional point data through total station and lidar, and then use artificial intelligence vision and total station positioning to detect the template position. This multi-technology integration method greatly improves the positioning accuracy. The point cloud scanning of the total station and lidar can accurately obtain the three-dimensional coordinates of the measurement control points, providing high-precision basic data for subsequent calculations. For example, these detailed and accurate three-dimensional coordinate data are like establishing an accurate three-dimensional coordinate system for the construction site, enabling the position of the template to be accurately located and analyzed in this coordinate system.

[0177] The recognition of reference points on the template by artificial intelligence vision technology supplements the total station measurement, obtains template information from different angles, and the combination of the two can more comprehensively understand the template state, avoid errors or blind spots that may exist in a single measurement method, and further improve the reliability of positioning detection.

[0178] 2. Advantages of the scientific nature of algorithm calculation

[0179] Construct a relative coordinate matrix and a relative distance matrix, and analyze the position relationship between the template reference points and the measurement control points through a series of calculations. The formula for calculating the relative coordinate vector , , and the relative distance formula , it can accurately quantify the spatial distance between each template reference point and the measurement control point. This enables construction workers to intuitively understand the position deviation of the template in space from the data, providing a scientific and accurate basis for judging whether the template reaches the preset position.

[0180] In the stage of judging the template position, calculate the average relative distance and the relevant calculations of the position deviation vector comprehensively consider the relationship between the template reference points and multiple measurement control points, and evaluate the template position from multiple dimensions of the whole and the local. By comparing the average relative distance and the magnitude of the position deviation vector with the preset threshold, this comprehensive judgment method can more accurately determine whether the template meets the requirements, reduce the possibility of misjudgment, and ensure the construction accuracy.

[0181] 3. Rationality advantages of the adjustment strategy

[0182] For the template reference points that do not reach the preset position, the method of calculating the adjustment vector is reasonable. Assume that the adjustment strategy is in the opposite direction of the position deviation vector and the adjustment amount is proportional to the deviation amount (such as , , ). This method can accurately calculate the adjustment amount according to the actual deviation of the template, making the template adjustment more targeted and effective. Construction workers can accurately adjust the template based on these calculation results, quickly adjust the template to the preset position, improve the construction efficiency, and at the same time ensure that the position accuracy of the adjusted template meets the requirements.

[0183] The mechanism of re-detection after adjustment is perfect. By repeating stages such as data acquisition and preprocessing, relative position relationship calculation, and template position judgment, a closed-loop control is formed. This ensures that the template can finally reach the preset position, guarantees the accuracy of the positioning of the template system before the construction of each grid beam, thereby improving the quality and accuracy of the entire grid beam construction, and laying a good foundation for the subsequent construction processes.

[0184] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations to the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A construction method of a precast mold for matching grid beams, characterized in that: The bottom formwork (1) is arranged on the mobile trolley (8), and the mobile trolley (8) is arranged on the track (9). One end of the bottom formwork (1) is provided with a fixed end formwork support (2), and the other end is provided with a mobile end formwork support (4). Outer formwork supports (3) are arranged on both sides of the bottom formwork (1). The outer formwork supports (3) and the mobile end formwork support (4) on both sides are connected to the formwork through demolding screws; A mobile inner formwork support (5) is further arranged inside the bottom formwork (1); The construction method includes that before the construction of each grid beam, the formwork system should be accurately positioned. The positioning method of the formwork system should combine the formwork structure and process requirements, set fixed measurement control points, and adjust the formwork and the matching beam section to the preset fixed position through the measurement of the plane position and elevation of the measurement control points; the measurement and control of the formwork for the measurement control points use a total station and a lidar to perform point cloud scanning on the measurement control points to obtain three-dimensional point data, and according to artificial intelligence vision and total station positioning, to detect whether the position of the formwork reaches the preset position; The method is as follows: A1. Set fixed measurement control points at the construction site according to the formwork structure and process requirements; scan these points using a total station and lidar to obtain the three-dimensional coordinate data of each measurement control point ( ); A2. Use artificial intelligence vision technology to identify reference points on the template, and use a total station to measure their actual coordinates; ​ A3. Construct a relative coordinate matrix: Calculate each template reference point relative to each measurement control point for the relative coordinate vector ; Let the components of the relative coordinate vector in the x, y, and z directions be respectively , then: ； ； ； Relative coordinate matrix , where each row corresponds to the relative coordinate vector of a measurement control point to all template reference points; Calculate the relative distance matrix according to the relative coordinate vectors , where the relative distance is calculated using the following formula: ； A4. Template position judgment stage: For each template reference point , calculate its average relative distance from all measured control points : ； Average relative distance vector ; Calculate the position deviation vector relative to the ideal position; let the average position of the measurement control points be , where: ； ； ； The components of the position deviation vector in the x, y, and z directions are: ； ； ； Position deviation vector ; A5. Template position determination: Set the position deviation threshold ; If for all template reference points , there is and , where is the direction deviation threshold, it is considered that the template has reached the preset position; Otherwise, the position of the formwork does not meet the requirements and needs to be adjusted; A6. Formwork position adjustment stage: For the template reference points that have not reached the preset positions , calculate the adjustment vector ; Assuming that the adjustment strategy is to adjust in the opposite direction of the position deviation vector and the adjustment amount is proportional to the deviation amount, then: ； ； ； Adjust the formwork according to the calculated adjustment vector; after the adjustment is completed, repeat the data acquisition and preprocessing stage, the relative position relationship calculation stage, and the formwork position judgment stage again to re-detect the formwork position until the formwork reaches the preset position.

2. The construction method of a grid beam matching precast mold according to claim 1, characterized in that: On both sides of the end face of the fixed end formwork support (2), there are fixed end side formworks (201). Between the fixed end side formworks (201) on both sides, there is a fixed end concave formwork (202). The fixed end concave formwork (202) is fixed on the fixed end formwork support (2). First wing formworks (203) are hinged on both sides of the fixed end formwork support (2). The first wing formworks (203) are connected to the fixed end formwork support (2) through fourth demolding screws (204).

3. The construction method of a grid beam matching precast mold according to claim 1, characterized in that: The top of the outer formwork support (3) is connected to the top of the side formwork (301) through a second demolding screw (303). The middle position of the side formwork (301) is connected to the outer formwork support (3) through a third demolding screw (304). The bottom of the side formwork (301) is hinged to the hinge seat (302); The hinge seat (302) is provided with a waist-shaped hole, and the bottom of the side formwork (301) is arranged inside the waist-shaped hole.

4. The construction method of a grid beam matching precast mold according to claim 1, characterized in that: On both sides of the mobile end formwork support (4), there are mobile side formworks (402). At least two first demolding screws (401) are arranged on the same vertical line of the mobile side formworks (402) and connected to the ground; An active end inner concave formwork support (10) is arranged between the mobile side formworks (402) on both sides.

5. The construction method of a grid beam matching precast mold according to claim 4, characterized in that: The active end inner concave formwork support (10) includes an active end concave formwork (1003). Third wing formworks (1001) are hinged at both ends of the active end concave formwork (1003). The middle of the third wing formworks (1001) is connected to the active end concave formwork (1003) through a plurality of fifth demolding screws (1002). The fifth demolding screws (1002) on both sides are connected through a bracket; The movable inner concave template (1003) of the movable end inner concave die holder (10) is connected to the template of the movable inner core die holder (5) by multiple transverse tie rods (11).

6. The construction method of a precast mold for matching a grid beam according to claim 1, characterized in that: The movable inner core die holder (5) is placed against the bottom die (1) at the bottom. The movable inner core die holder (5) includes two left inner core templates (501) and a right inner core template (506). Fourth wing templates (504) are hinged at both ends of the left inner core template (501) and the right inner core template (506). An angled block (505) is provided at the end of the fourth wing template (504). The wing templates of the left inner core template (501) and the right inner core template (506) are closed by two mating angled blocks (505). The fourth wing template (504) is connected to the left inner core template (501) by multiple sixth demolding lead screws (503). The fourth wing templates (504) on both sides are connected by multiple support inner frames (502).

7. The construction method of a grid beam matching precast mold according to claim 6, characterized in that: The left inner core template (501) and the right inner core template (506) are connected to the side template (301) of the outer die holder (3) by multiple longitudinal tie rods (12).

8. The construction method of a precast mold for matching a grid beam according to claim 1, characterized in that: Multiple three-way jacks (7) are also provided on both sides at the bottom of the movable trolley (8). A support pad (6) is provided on one side of each three-way jack (7). A drive motor (801) is also provided on the roller at the bottom of the movable trolley (8). The drive motor (801) is connected to the roller.

9. The construction method of a precast mold matched with a grid beam according to any one of claims 1-7, characterized in that: The prefabrication yard for grid beams should include: a steel bar processing area, a grid beam prefabrication area, a grid beam pre-assembly area, and a grid beam temporary storage area. The steel bar processing area is provided with a steel bar pedestal matching the grid beam. A gantry lifting device (13) is provided in the special prefabrication yard for grid beams. The method includes: S1. Position the first set of movable trolleys (8), move and position them along the axis direction of the track (9), and position the three-way jacks (7). S2. Level the bottom die (1) through the three-way jacks (7), leveling in the direction perpendicular to the track axis and the elevation. S3. Position the support pads (6), remove the three-way jacks (7), and the support pads (6) support the entire movable trolley (8). S4. After accurately positioning the fixed end side template (201) and the fixed end inner concave template (202) of the fixed end die holder (2), install them. S5. After accurately positioning the side templates (301) of the two sets of outer die holders (3), install them. S6. After accurately positioning the movable side template (402) of the movable end die holder (4), install it. S7. Lift and place the steel reinforcement cage into the mold, accurately position it, and fix it after ensuring the protective layer thickness. S8. After accurately positioning the left inner core template (501) and the right inner core template (506) of the movable inner core die holder (5), install them, and then install the movable end inner concave die holder (10) through the transverse tie rods (11), and connect and install and fix it to the side template (301) through the longitudinal tie rods (12). S9. Pour the precast beam. After the strength reaches the requirement, remove the two sets of outer die holders (3), and the specific sequence is carried out according to the principle of "install last, remove first". S10. After the two sets of outer die holders (3) and the movable inner core die holder (5) are removed, position the three-way jacks (7) and remove the support pads (6). S11. Use the three-way jacks (7) to place the movable trolley (8) on the track (9). S12. Move the precast beam that has been poured to the position of the matching beam through the first set of mobile trolleys (8); The second set of mobile trolleys (8) is lifted to the precast beam position by a gantry crane, and steps S1 to S3 are repeated to accurately position the second set of mobile trolleys (8) at the precast beam position; S13. Taking the second set of mobile trolleys (8) at the accurately positioned precast beam position as the standard, the first set of mobile trolleys (8) at the matching beam position is adjusted through steps S1 to S3 to achieve the purpose of matching the precast beam with the matching beam; S14. Repeat steps S4 to S7 to accurately position and install the fixed end formwork (2), two sets of outer formworks (3), steel reinforcement cages, and mobile inner formwork (5), and repeat step S9 to pour the precast beam; S15. When the strength of the matching beam reaches 75% of the design strength, transfer it to the grid beam pre-assembly area for pre-assembly through the lifting equipment (13), and lift the first set of mobile trolleys (8) to one side for installation at the precast beam position; S16. Remove the support pads of the precast beam and move the precast beam segment to the matching beam segment. Lift the first set of mobile trolleys (8) to the precast beam position with a gantry crane, and repeat steps S1 to S9 to continue constructing the next precast grid beam.

Images