A construction method and system for square-to-round adjustable combined die intelligent adaptation based on digital twinning

Abstract

The application relates to the technical field of adjustable combined molds, in particular to a construction method and system for intelligent adaptation of a square-to-round cylinder adjustable combined mold based on digital twinning. The technical scheme comprises a square template assembly composed of four plate pieces, a round template assembly composed of two replaceable semicircular plates, and a clamping system composed of multiple layers of steel cables and a hydraulic synchronous driving mechanism. During construction, the matched template assembly is selected and assembled, the steel cables of each layer are wound outside the round template and connected with the same synchronous driving mechanism, and the synchronous driving of the steel cables of each layer is used to apply uniform hoop clamping force through force contraction. Through the cooperation of the replaceable arc-shaped panels and the synchronous clamping system and the intelligent adaptation of digital twinning, high-precision forming and efficient construction of the square-to-round cylinder structure are realized, the mold can be used repeatedly, and the technical problems of disorder of traditional wooden mold arcs, uneven stress and material waste are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of adjustable modular mold technology, and in particular to a construction method and system for intelligent adaptation of adjustable modular molds for converting square columns to round columns based on digital twins. Background Technology

[0002] With the diversification of modern architectural design concepts and the increasing complexity of building shapes, the variable cross-section treatment of structural components has become an important means of expressing architectural aesthetics. In public building lobbies, exhibition halls, and elevated floors, a "square-to-round column" structure is often used, where the lower part is a rectangular column and the upper part gradually transitions to a circular column capital. This structure not only meets the functional requirements of convenient connection between the bottom rectangular column and the wall and high space utilization, but also achieves a smooth visual transition and a unique artistic effect through the top circular column capital. Currently, the construction of such square-to-round column components mainly relies on traditional wooden formwork: first, the formwork area is determined by manual measurement and layout; then, the wooden formwork is cut into short, curved strips on site, which are pieced together to form a circular outline; the exterior is reinforced with steel pipe fasteners and wire bracing; finally, the curvature and verticality are repeatedly corrected manually using a plumb bob and measuring tape.

[0003] However, the aforementioned traditional construction methods have revealed numerous insurmountable technical problems in practical applications. First, the wooden formwork, composed of small straight boards, results in noticeable zigzag lines and sharp edges on the curved sections, leading to poor forming quality, numerous seams, and a high risk of grout leakage during pouring. Furthermore, the rough surface after demolding necessitates extensive post-construction repairs. Second, the lack of straight-edge references for circular cross-sections means that layout, cutting, enclosure, and correction rely entirely on worker experience, resulting in repeated adjustments to the curvature, low formwork efficiency, and high labor costs. Third, the uneven distribution of lateral pressure in circular sections leads to uneven stress distribution under traditional steel pipe clamp reinforcement, easily causing localized bulging, elliptical deformation, or even formwork displacement, making it difficult to guarantee structural dimensional accuracy. Fourth, the varying radii and heights of each column cap render the wooden formwork waste after cutting, making reuse virtually impossible and resulting in significant material waste, contradicting the principles of green construction. Summary of the Invention

[0004] The purpose of this application is to address the problems existing in the background technology by proposing a construction method and system based on digital twins for intelligent adaptation of adjustable combined molds for converting square columns into round columns, which can achieve high-precision molding, high-efficiency construction, and reusability.

[0005] On the one hand, this application proposes a construction method for intelligent adaptation of a square column to a cylindrical adjustable combined mold based on digital twins, including the following steps: Step 1: Obtain the design parameters of the square column to be constructed into a round column structure, simulate and calculate the required template specifications and clamping force parameters based on the digital twin model, and select the appropriate square template components and round template components from the template library; Step 2: Assemble and fix the square template assembly to the area of ​​the square column to be poured, and place the steel reinforcement cage inside it; Step 3: The selected circular template component is detachably installed on top of the square template component, and a transition cavity is formed inside the circular template component, which gradually changes from a square cross section to a circular cross section; Step 4: At least two clamping devices are installed on the outside of the circular template assembly along the height direction. The clamping devices include a flexible tension member surrounding the periphery of the circular template assembly and a length adjusting member connected to both ends of the flexible tension member. Step 5: Connect each of the length adjustment components to the same synchronous drive mechanism, and drive each length adjustment component to retract synchronously through the synchronous drive mechanism, so that each flexible tension component applies a consistent radial clamping force to the circular template assembly; Step Six: Pour concrete into the square template assembly and the circular template assembly. After the concrete reaches the predetermined strength, release the synchronous drive mechanism and remove the clamping device, the circular template assembly, and the square template assembly in sequence to complete the construction.

[0006] Optionally, the square template assembly includes four independent square plates, and adjacent square plates are fixedly connected by detachable fasteners; The square plate has ribs on its outer side, and the detachable fastener includes multiple pressure plates placed on the ribs, a connecting rod passing through the parallel pressure plates at the same height, and nuts threaded to both sides of the connecting rod.

[0007] Optionally, the circular template assembly includes two detachably connected semicircular plates, which are spliced ​​together to form a casting area.

[0008] Optionally, the circular template component has various specifications with different radii of curvature. In step one, a circular template component with the corresponding radius of curvature is selected for installation based on the simulation calculation results of the digital twin model.

[0009] Optionally, the bottom of the semi-circular plate is provided with a connecting end, and the circular template assembly further includes two connecting seats fitted onto the square plate. The connecting seats correspond one-to-one with the semi-circular plate and are detachably connected through the connecting end.

[0010] Optionally, each of the semi-circular plates is provided with a stiffening rib on its outer side, and the outer side of the stiffening rib is provided with a guide groove for the flexible tension member to be embedded and positioned.

[0011] Optionally, the length adjusting component includes an adjusting cylinder and a sealing plate that is slidably and sealingly connected inside the adjusting cylinder. A connecting hook is fixedly installed on the sealing plate, and hooks that cooperate with the connecting hooks are fixedly installed at both ends of the flexible tension member. A squeezing chamber is formed between the sealing plate and the end face of the regulating cylinder, and a liquid inlet is provided on the squeezing chamber.

[0012] Optionally, the synchronous drive mechanism includes a drive cylinder and a sealing plug that is slidably and sealingly connected inside the drive cylinder. A pressurization chamber is formed between the sealing plug and the bottom of the drive cylinder. A connection port is provided on the pressurization chamber, and the connection port is connected to the liquid inlet through a connecting pipe. The extrusion chamber, connecting pipe and pressurization chamber are all filled with a transmission medium; The synchronous drive mechanism further includes a pressure-applying component that applies pressure to the sealing plug. The pressure-applying component includes a lever rotatably mounted on the drive cylinder and a drive rod rotatably mounted on the lever. A circular plate is slidably mounted inside the drive cylinder, and a spring is provided between the circular plate and the sealing plug.

[0013] Optionally, the synchronous drive mechanism further includes a limiting component mounted on the drive cylinder to position the lever. The limiting component includes a limiting cylinder rotatably mounted on the drive cylinder, a piston slidably and sealingly connected inside the limiting cylinder, and a connecting shaft fixedly mounted at both ends of the piston and passing through the limiting cylinder. One of the connecting shafts is rotatably connected to the lever. The piston divides the inside of the limiting cylinder into two liquid chambers, which are connected by a delivery pipe. A valve is fixedly mounted on the delivery pipe, and both the liquid chambers and the delivery pipe are filled with a transmission medium. The synchronous drive mechanism also includes a pressure indicating mechanism, which includes a scale rod fixedly mounted on the sealing plug, an indicator rod fixedly mounted on the circular plate, and a pointer fixedly mounted on the indicator rod.

[0014] On the other hand, this application proposes a construction system based on digital twins for intelligent adaptation of adjustable combined molds from square columns to round columns, used to implement the methods described above, including: A square formwork assembly is used to enclose and form a square column casting area, which contains a steel reinforcement cage. A circular template assembly is replaceably disposed above the square template assembly, and its interior forms a transition cavity that gradually changes from a square cross-section to a circular cross-section; The clamping device includes at least two flexible tension members that surround the outside of the circular template assembly along the height direction, and length adjusting members connected to both ends of each of the flexible tension members; A synchronous drive mechanism, connected to each of the length adjustment components, is used to synchronously drive each length adjustment component to retract, so that each flexible tension component applies a consistent radial clamping force to the circular template assembly. The digital twin processing unit is used to build a digital twin model based on the design parameters of the square column to round column structure to be constructed, and to simulate and calculate the specification parameters of the required square template components and round template components, as well as the target clamping force parameters of each flexible tension component.

[0015] In summary, this application includes at least one of the following beneficial technical effects: This application eliminates the appearance defects caused by on-site cutting and splicing of wooden molds, such as discontinuous arcs and strong sense of broken lines, from the source by using factory-prefabricated aluminum alloy square template components and replaceable circular template components with curvature radii. The concrete is formed smoothly and rounded with excellent appearance, and basically no post-repair is required. Furthermore, a clamping system consisting of high-strength steel cables and a hydraulic synchronous drive mechanism is set on the outside of the circular template assembly. By utilizing the principle of communicating vessels, each layer of steel cables obtains a completely consistent circumferential clamping force, which completely solves the problem of uneven force and elliptical deformation caused by the separate tightening of multiple back ribs in traditional methods. Combined with stiffening ribs, it significantly improves the overall rigidity and lateral pressure resistance of the template. Aluminum alloy formwork components can be reused multiple times, greatly reducing material waste, producing no cutting waste on site, achieving a high level of civilized construction, and significantly improving the efficiency of support and dismantling compared to traditional wooden formwork. It has good economic benefits and promotional application value. Attached Figure Description

[0016] Figure 1 Schematic diagram of the adjustable combination mold for converting square column to round column Figure 1 ; Figure 2 Schematic diagram of the adjustable combination mold for converting square column to round column Figure 2 ; Figure 3 This is a structural schematic diagram of a circular template component; Figure 4 for Figure 1 A magnified view of a section at point A in the middle; Figure 5 for Figure 1 A magnified view of a section at point B in the middle; Figure 6 This is a schematic diagram of the clamping device. Figure 7 This is a schematic diagram of the synchronous drive mechanism; Figure 8 This is a schematic diagram of the internal structure of the drive cylinder; Figure 9 for Figure 8 A magnified view of a section at point C; Figure 10 This is a schematic diagram of the connection of the connecting pipe; Figure 11 for Figure 10 A magnified view of a section at point D.

[0017] Reference numerals: 1. Square template assembly; 11. Square plate; 12. Rib; 13. Detachable fastener; 131. Pressure plate; 132. Connecting rod; 133. Nut; 2. Circular template assembly; 21. Semi-circular plate; 22. Connecting end; 23. Connecting seat; 24. Stiffening rib; 3. Reinforcing cage; 4. Hooping device; 41. Flexible tension member; 411. Hook; 42. Length adjusting member; 421. Adjusting cylinder; 422. Sealing plate; 423. Connecting hook; 424. Extrusion chamber; 425. 5. Liquid inlet; 5. Synchronous drive mechanism; 51. Drive cylinder; 511. Sealing plug; 512. Pressurization chamber; 513. Connection port; 514. Connecting pipe; 52. Pressure application component; 521. Lever; 522. Drive rod; 523. Circular plate; 524. Spring; 53. Limiting assembly; 531. Limiting cylinder; 532. Piston; 533. Connecting shaft; 534. Liquid chamber; 535. Delivery pipe; 536. Valve; 54. Pressure indicating mechanism; 541. Scale rod; 542. Indicator rod; 543. Pointer. Detailed Implementation

[0018] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] The method implementation examples are as follows: like Figures 1 to 7 As shown, this application proposes a construction method for intelligent adaptation of a square-to-cylinder adjustable combined mold based on digital twins, comprising the following steps: Step 1: Obtain the design parameters of the square column to be constructed into a round column structure, simulate and calculate the required template specifications and clamping force parameters based on the digital twin model, and select the appropriate square template component 1 and round template component 2 from the template library; Step 2: Assemble and fix the square template component 1 in the area of ​​the square column to be poured, and place the steel cage 3 inside it; Step 3: The selected circular template component 2 is detachably installed on top of the square template component 1, and a transition cavity is formed inside the circular template component 2, which gradually changes from a square cross section to a circular cross section. Step 4: At least two clamping devices 4 are installed on the outside of the circular template assembly 2 along the height direction. The clamping device 4 includes a flexible tension member 41 surrounding the periphery of the circular template assembly and a length adjusting member 42 connected to both ends of the flexible tension member. Step 5: Connect each length adjustment component 42 to the same synchronous drive mechanism 5, and drive each length adjustment component 42 to retract synchronously through the synchronous drive mechanism 5, so that each flexible tension component 41 applies a consistent radial clamping force to the circular template assembly 2. Step 6: Pour concrete into the square template assembly 1 and the circular template assembly 2. After the concrete reaches the predetermined strength, release the synchronous drive mechanism 5, and then remove the clamping device 4, the circular template assembly 2 and the square template assembly 1 in sequence to complete the construction.

[0020] like Figures 1 to 5 As shown, specifically in this embodiment, the square formwork assembly 1 includes four independent square plates 11. Adjacent square plates 11 are fixedly connected by detachable fasteners 13. The square formwork assembly 1 is made of four independent square plates 11 assembled together and connected by detachable fasteners 13. The detachable connection method facilitates the quick removal of the formwork after the concrete reaches its strength, and the removed plates are intact and can be directly reused for the next construction section. Ribs 12 are placed on the outer side of the square plates 11, and the detachable fasteners 13 are... The device includes multiple pressure plates 131 placed on the ribs 12, a connecting rod 132 passing through the parallel pressure plates 131 at the same height, and nuts 133 threaded to both sides of the connecting rod 132. The connecting rod 132 passes through the pressure plates 131 on the outer sides of the two opposing ribs 12. By tightening the nuts 133 at both ends of the connecting rod 132, the two pressure plates 131 tend to move towards each other, and then the clamping force is transmitted to the joint of the square plate 11 through the ribs 12, so that the adjacent square plates 11 fit together tightly.

[0021] Applying pre-tightening force through threaded fastening can effectively eliminate installation gaps at the joints of the plates and prevent cement slurry from leaking out of the joints during pouring. The threaded engagement between the connecting rod 132 and the nut 133 allows the fastening force to be quantitatively controlled by the torque of a wrench.

[0022] like Figures 1 to 5 As shown, in this embodiment, the circular template component 2 includes two detachably connected semi-circular plates 21. The two semi-circular plates 21 are spliced ​​together to form a pouring area. Specifically, the circular template component 2 has various specifications with different radii of curvature. In step one, the circular template component 2 with the corresponding radius of curvature is selected for installation based on the results of the simulation calculation of the digital twin model. In different engineering projects, the diameter design requirements of the upper cylindrical section of the square column to round column structure are often different. Traditional wooden formwork construction requires on-site layout, cutting, and trial assembly for each specific dimension, which is not only inefficient but also has large manual operation errors, making it difficult to guarantee the accuracy and consistency of the arc.

[0023] This application prefabricates circular template components 2 with various standard curvature radii, and performs virtual matching calculations with digital twin models before construction. It directly selects the specifications and models corresponding to the design dimensions from the template library for installation, realizing the standardization and serialization of circular template production. Factory prefabrication can ensure the curvature accuracy and surface smoothness of the arc panels, fundamentally solving the appearance quality problems such as discontinuous arcs, obvious edges and corners, and strong sense of fold lines caused by splicing small wooden template pieces. During on-site construction, there is no need for cutting, trimming, trial assembly, and other processes. The materials can be directly taken and assembled according to specifications, which greatly improves construction efficiency and significantly reduces labor costs. The same specification of circular template components can be reused repeatedly in different projects, changing the high-loss mode of wooden formwork that is cut once a column is used and then discarded.

[0024] Furthermore, the bottom of the semi-circular plate 21 is provided with a connecting end 22. The circular template assembly 2 also includes two connecting seats 23 sleeved on the square plate 11. The connecting seats 23 correspond one-to-one with the semi-circular plate 21 and are detachably connected through the connecting end 22. The connecting seats 23 are pre-sleeved and fixed to the upper end of the lower square plate 11. The semi-circular plate 21 is detachably positioned and connected to the connecting seat 23 through the connecting end 22 at its bottom, providing a reliable transition connection between the circular template assembly 2 and the square template assembly 1. This ensures that the upper and lower templates are precisely aligned at the interface, eliminates the risk of misalignment, and solves the problem of misalignment and root damage caused by inaccurate template alignment at the junction of the column cap and column body in traditional construction. The structure of the connecting seat 23 being fitted onto the square plate 11 makes the installation and positioning of the circular template assembly 2 more convenient. Operators only need to insert the connecting end 22 of the semi-circular plate 21 into the connecting seat 23 and lock it in place, without the need for repeated measurement and correction, which further improves the efficiency of on-site assembly.

[0025] like Figures 1 to 6 As shown, in this embodiment, each semi-circular plate 21 is provided with a stiffening rib plate 24 on its outer side. The outer side of the stiffening rib plate 24 is provided with a guide groove for the flexible tension member to be embedded and positioned. The stiffening rib plate 24 is welded or integrally formed on the outer side of the semi-circular plate 21 along the longitudinal direction, which plays the role of enhancing the bending stiffness of the arc panel and preventing the panel from causing local depression or instability under the action of concrete lateral pressure. Meanwhile, a guide groove is opened on the outer side of the stiffening rib plate 24 so that the flexible tension member 41 can be embedded in it when it is wrapped. The guide groove provides a precise positioning path for the flexible tension member 41, ensuring that the flexible tension member 41 always stays at the design elevation position during the tensioning process and will not slip or deviate due to vibration or external force interference, thereby ensuring that the circumferential clamping force can be accurately applied to the preset stress section. The guide groove restricts the degree of freedom of the flexible tension member 41 in the horizontal plane, making the flexible tension member 41 fit more tightly with the outer wall of the template during the tensioning process, and the force transmission path is more direct and efficient. This avoids damage to the template panel caused by welding positioning parts or blocks on the template panel, and maintains the integrity of the template panel and the accuracy of repeated use.

[0026] The length adjusting component 42 includes an adjusting cylinder 421 and a sealing plate 422 that is slidably and sealingly connected inside the adjusting cylinder 421. A connecting hook 423 is fixedly installed on the sealing plate 422. Hooks 411 that cooperate with the connecting hooks 423 are fixedly installed at both ends of the flexible tension member 41. The hooks 411 and the connecting hooks 423 hook and cooperate with each other to realize the quick connection between the end of the flexible tension member 41 and the length adjusting component 42. When the sealing plate 422 slides inside the adjusting cylinder 421, it drives the connecting hooks 423 and the hooks 411 to move, thereby changing the effective circumference of the flexible tension member 41.

[0027] It enables quick assembly and disassembly between the flexible tension member 41 and the length adjustment member 42, significantly shortening the on-site installation and disassembly time. The hook connection method has a certain amount of flexibility, allowing the flexible tension member 41 to adjust its stress posture during tensioning, avoiding additional bending moment or stress concentration caused by rigid connection.

[0028] It is worth noting that a squeezing chamber 424 is formed between the end faces of the sealing plate 422 and the regulating cylinder 421. An inlet 425 is connected to the squeezing chamber 424. When the transmission medium is injected into the squeezing chamber 424 through the inlet 425, the pressure in the squeezing chamber 424 increases as the transmission medium is continuously filled, pushing the sealing plate 422 to move away from the inlet 425. The sealing plate 422 drives the two ends of the flexible tension member 41 to tighten towards each other through the connecting hook 423 and the hook 411, thereby shortening the circumference of the flexible tension member 41 and applying the circumferential clamping force. The flexible tension member 41 is specifically a high-strength steel cable, preferably made of prestressed steel strand or steel wire rope. It has the characteristics of high tensile strength, good flexibility and light weight. The advantage of using steel cable as a flexible tension member is that the steel cable has excellent flexibility and can closely fit the outer wall of the circular template with different radii of curvature, overcoming the technical limitations of traditional rigid back ribs that cannot adapt to variable cross-section curved surfaces. The tensile strength of the steel cable far exceeds that of ordinary steel bars and structural steel. It can provide a large circumferential restraint force with a small cross section. It is also lightweight, making it easy to handle and install manually on site. The steel cable is prefabricated in the factory, and anchors are pressed at both ends to form hooks 411. No cutting or welding work is required on site, making construction convenient and efficient.

[0029] like Figures 6 to 11As shown, in this embodiment, the synchronous drive mechanism 5 includes a drive cylinder 51 and a sealing plug 511 that is slidably and sealingly connected inside the drive cylinder 51. A pressurization chamber 512 is formed between the sealing plug 511 and the bottom of the drive cylinder 51. A connection port 513 is provided on the pressurization chamber 512. The connection port 513 is connected to the liquid inlet 425 through a connecting pipe 514. The extrusion chamber 424, the connecting pipe 514 and the pressurization chamber 512 are all filled with a transmission medium. The transmission medium is a liquid that cannot be compressed under working conditions. When the sealing plug 511 moves downward in the drive cylinder 51, the volume of the pressurization chamber 512 decreases. The pressure of the transmission medium inside it increases after being squeezed. The pressure is transmitted to the liquid inlet 425 of each length adjustment member 42 through the connecting pipe 514. After the transmission medium enters the extrusion chamber 424, it pushes the sealing plate 422 to move, thereby synchronously tightening the flexible tension members 41 of each layer. Since the transmission medium is an incompressible liquid under working conditions, according to Pascal's principle, in a closed and connected container, the pressure applied to any point in a stationary liquid will be transmitted to all points in the liquid with the same magnitude. Therefore, when the sealing plug 511 applies pressure to the pressurizing chamber 512, the pressure will be transmitted equally to each extrusion chamber 424 connected to the connecting pipe 514, thereby ensuring that the driving force obtained by each layer length adjustment member 42 is the same, and thus keeping the circumferential clamping force applied by each layer of flexible tension member 41 to the circular template assembly 2 highly consistent. This design effectively solves the technical problem of uneven tightening force of each layer and easy elliptical deformation of the circular cross section caused by differences in operator experience and tightening sequence when multiple independent bolts or turnbuckles are used to tighten each back rib in traditional construction.

[0030] Furthermore, the synchronous drive mechanism 5 also includes a pressure-applying component 52 that applies pressure to the sealing plug 511. The pressure-applying component 52 includes a lever 521 rotatably mounted on the drive cylinder 51 and a drive rod 522 rotatably mounted on the lever 521. A circular plate 523 is slidably mounted inside the drive cylinder 51. A spring 524 is provided between the circular plate 523 and the sealing plug 511. When the operator moves the lever 521, the lever 521 rotates around its hinge point on the drive cylinder 51. The drive rod 522 moves accordingly and transmits the force to the circular plate 523, pushing the circular plate 523 to slide downward along the inner wall of the drive cylinder 51. The circular plate 523 further compresses the spring 524. The elastic restoring force of the spring 524 acts on the sealing plug 511, pushing the sealing plug 511 to move downward, thereby applying pressure to the transmission medium in the pressurization chamber 512. The clamping method employs lever 521 in conjunction with spring 524, utilizing the lever principle to achieve labor-saving transmission. Operators only need to apply a small amount of manual force to generate a thrust several times greater than the input force at the sealing plug 511 end, reducing the labor intensity of on-site operations. The clamping pressure can be completed without the need for a large hydraulic pump station or electric equipment. The spring 524 plays a role in energy storage and buffering. When the formwork undergoes slight deformation due to vibration or temperature changes during concrete pouring, the spring 524 can automatically compensate for the displacement changes, maintain the relative stability of the clamping force, and avoid overload or loosening problems caused by rigid pressure.

[0031] The synchronous drive mechanism 5 also includes a limiting component 53 mounted on the drive cylinder 51 to position the lever 521. The limiting component 53 includes a limiting cylinder 531 rotatably mounted on the drive cylinder 51, a piston 532 slidably and sealingly connected inside the limiting cylinder 531, and a connecting shaft 533 fixedly mounted at both ends of the piston 532 and passing through the limiting cylinder 531. One of the connecting shafts 533 is rotatably connected to the lever 521. The piston 532 divides the limiting cylinder 531 into two liquid chambers 534, which are connected by a delivery pipe 535. A valve 536 is fixedly mounted on the delivery pipe 535. Both 534 and the delivery pipe 535 are filled with transmission medium. When the operator rotates the lever 521, the connecting shaft 533, which is rotatably connected to the lever 521, is displaced. At the same time, the limiting cylinder 531 is driven to swing adaptively around its rotational connection point with the drive cylinder 51 to compensate for the change in the movement trajectory of the lever 521. When the valve 536 is in the open state, when the piston 532 moves with the connecting shaft 533, the volume of one of the liquid chambers 534 decreases, and the transmission medium flows through the delivery pipe 535 to the other liquid chamber 534 with an increased volume. At this time, the lever 521 can move freely, and the operator can smoothly perform the pressure operation.

[0032] When the clamping force reaches the design target value, valve 536 is closed. At this time, the delivery pipe 535 is cut off, the transmission medium between the two liquid chambers 534 cannot flow to each other, the piston 532 is hydraulically locked in the current position and cannot move, and then the position of lever 521 is locked through connecting shaft 533. The compression state of sealing plug 511 and spring 524 is fixed, and the pressure in pressurizing chamber 512 is kept constant.

[0033] Furthermore, the synchronous drive mechanism 5 also includes a pressure indicating mechanism 54, which includes a scale rod 541 fixedly mounted on the sealing plug 511, an indicator rod 542 fixedly mounted on the circular plate 523, and a pointer 543 fixedly mounted on the indicator rod 542. The compression of the spring 524 is proportional to the relative displacement between the sealing plug 511 and the circular plate 523. According to Hooke's law, the elastic force of the spring 524 is linearly related to its compression. Therefore, the elastic force of the spring 524 can be indirectly determined by measuring the height difference between the sealing plug 511 and the circular plate 523, and then the pressure exerted by the sealing plug 511 on the transmission medium and the circumferential clamping force obtained by each layer of flexible tension member 41 can be calculated.

[0034] In actual operation, the scale rod 541 moves synchronously with the sealing plug 511, and the indicator rod 542 and pointer 543 move synchronously with the circular plate 523. The scale value indicated by the pointer 543 on the scale rod 541 reflects the relative displacement of the two. When the operator applies pressure by rotating the lever 521, he / she can intuitively grasp the current clamping force by observing the scale value indicated by the pointer 543. When the pointer 543 reaches the target scale value pre-calculated by the digital twin model, the pressure is stopped and the valve 536 is closed and locked.

[0035] The system implementation example is as follows: like Figures 1 to 7 As shown, this application proposes a construction system for intelligent adaptation of a square column to round column adjustable combined mold based on digital twin, comprising: A square template component 1 is used to enclose and form a square column casting area, which contains a steel cage 3. The circular template component 2 is replaceably disposed above the square template component 1, and its interior forms a transition cavity that gradually changes from a square cross section to a circular cross section; The clamping device 4 includes at least two flexible tension members 41 that surround the outside of the circular template assembly along the height direction, and length adjusting members 42 connected to both ends of each flexible tension member; The synchronous drive mechanism 5 is connected to each length adjustment member 42 and is used to synchronously drive each length adjustment member 42 to retract so that each flexible tension member 41 applies a consistent radial clamping force to the circular template assembly 2. The digital twin processing unit is used to build a digital twin model based on the design parameters of the square column to round column structure to be constructed, and to simulate and calculate the specification parameters of the required square template components and round template components, as well as the target clamping force parameters of each flexible tension member 41.

[0036] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A construction method for intelligent adaptation of an adjustable combined mold for converting square columns to round columns based on digital twins, characterized in that, Includes the following steps: Step 1: Obtain the design parameters of the square column to be constructed into a round column structure, simulate and calculate the required template specifications and clamping force parameters based on the digital twin model, and select the appropriate square template component (1) and round template component (2) from the template library. Step 2: Assemble and fix the square template assembly (1) in the area of ​​the square column to be poured, and place the steel cage (3) inside it. Step 3: The selected circular template component (2) is detachably installed on top of the square template component (1), and a transition cavity is formed inside the circular template component (2) that gradually changes from a square cross section to a circular cross section; Step 4: At least two clamping devices (4) are installed on the outside of the circular template assembly (2) along the height direction. The clamping device (4) includes a flexible tension member (41) surrounding the periphery of the circular template assembly and a length adjusting member (42) connected to both ends of the flexible tension member. Step 5: Connect each of the length adjustment components (42) to the same synchronous drive mechanism (5), and drive each length adjustment component (42) to retract synchronously through the synchronous drive mechanism (5), so that each flexible tension component (41) applies a consistent radial clamping force to the circular template assembly (2); Step 6: Pour concrete into the square template assembly (1) and the circular template assembly (2). After the concrete reaches the predetermined strength, release the synchronous drive mechanism (5) and remove the clamping device (4), the circular template assembly (2) and the square template assembly (1) in sequence to complete the construction.

2. The construction method for intelligent adaptation of a square-to-cylinder adjustable combined mold based on digital twins according to claim 1, characterized in that, The square template assembly (1) includes four independent square plates (11), and adjacent square plates (11) are fixedly connected by detachable fasteners (13); The square plate (11) has a rib plate (12) placed on its outer side. The detachable fastener (13) includes multiple pressure plates (131) placed on the rib plate (12), a connecting rod (132) passing through the pressure plates (131) which are parallel to each other and located at the same height, and nuts (133) threaded to both sides of the connecting rod (132).

3. The construction method for intelligent adaptation of an adjustable combined mold for converting a square column to a round column based on digital twins, as described in claim 1, is characterized in that... The circular template assembly (2) includes two detachably connected semi-circular plates (21), which are spliced ​​together to form a casting area.

4. The construction method for intelligent adaptation of an adjustable combined mold for converting a square column to a round column based on digital twins, as described in claim 3, is characterized in that... The circular template component (2) has various specifications with different radii of curvature. In step one, the circular template component (2) with the corresponding radius of curvature is selected for installation based on the simulation calculation results of the digital twin model.

5. The construction method for intelligent adaptation of an adjustable combined mold for converting a square column to a round column based on digital twins, as described in claim 4, is characterized in that... The bottom of the semi-circular plate (21) is provided with a connecting end (22). The circular template assembly (2) also includes two connecting seats (23) sleeved on the square plate (11). The connecting seats (23) correspond one-to-one with the semi-circular plate (21) and are detachably connected through the connecting end (22).

6. The construction method for intelligent adaptation of an adjustable combined mold for converting a square column to a round column based on digital twins, as described in claim 5, is characterized in that... Each of the semi-circular plates (21) is provided with a stiffening rib (24) on its outer side, and the outer side of the stiffening rib (24) is provided with a guide groove for the flexible tension member to be embedded and positioned.

7. The construction method for intelligent adaptation of a square-to-cylinder adjustable combined mold based on digital twins according to claim 6, characterized in that, The length adjusting member (42) includes an adjusting cylinder (421) and a sealing plate (422) that is slidably and sealingly connected inside the adjusting cylinder (421). A connecting hook (423) is fixedly installed on the sealing plate (422), and hooks (411) that cooperate with the connecting hooks (423) are fixedly installed at both ends of the flexible tension member (41). A squeezing chamber (424) is formed between the end face of the sealing plate (422) and the regulating cylinder (421), and an inlet (425) is provided on the squeezing chamber (424).

8. The construction method for intelligent adaptation of an adjustable combined mold for converting a square column to a round column based on digital twins, as described in claim 7, is characterized in that... The synchronous drive mechanism (5) includes a drive cylinder (51) and a sealing plug (511) that is slidably and sealingly connected inside the drive cylinder (51). A pressurization chamber (512) is formed between the sealing plug (511) and the bottom of the drive cylinder (51). A connection port (513) is provided on the pressurization chamber (512). The connection port (513) is connected to the liquid inlet (425) through a connecting pipe (514). The extrusion chamber (424), connecting pipe (514) and pressurization chamber (512) are all filled with transmission medium; The synchronous drive mechanism (5) further includes a pressure-applying component (52) for applying pressure to the sealing plug (511). The pressure-applying component (52) includes a lever (521) rotatably mounted on the drive cylinder (51) and a drive rod (522) rotatably mounted on the lever (521). The drive cylinder (51) is slidably mounted on a circular plate (523). A spring (524) is provided between the circular plate (523) and the sealing plug (511).

9. A construction method for intelligent adaptation of an adjustable combined mold for converting a square column to a round column based on digital twins, as described in claim 8, is characterized in that... The synchronous drive mechanism (5) further includes a limiting component (53) installed on the drive cylinder (51) to position the lever (521). The limiting component (53) includes a limiting cylinder (531) rotatably installed on the drive cylinder (51), a piston (532) slidably and sealed inside the limiting cylinder (531), and a connecting shaft (533) fixedly installed at both ends of the piston (532) and passing through the limiting cylinder (531). One of the connecting shafts (533) is rotatably connected to the lever (521). The piston (532) divides the inside of the limiting cylinder (531) into two liquid chambers (534). The two liquid chambers (534) are connected through a delivery pipe (535). A valve (536) is fixedly installed on the delivery pipe (535). Both the liquid chambers (534) and the delivery pipe (535) are filled with a transmission medium. The synchronous drive mechanism (5) further includes a pressure indicator mechanism (54), which includes a scale rod (541) fixedly installed on the sealing plug (511), an indicator rod (542) fixedly installed on the circular plate (523), and a pointer (543) fixedly installed on the indicator rod (542).

10. A construction system for intelligent adaptation of a square-to-cylinder adjustable combined mold based on digital twins, used to implement the method as described in claim 9, characterized in that, include: A square template assembly (1) is used to enclose and form a square column casting area, which contains a steel cage (3). A circular template assembly (2) is replaceably disposed above the square template assembly (1), and a transition cavity is formed inside which the square cross section gradually changes to a circular cross section; The clamping device (4) includes at least two flexible tension members (41) that surround the outside of the circular template assembly along the height direction, and length adjusting members (42) connected to both ends of each of the flexible tension members. The synchronous drive mechanism (5) is connected to each of the length adjustment members (42) and is used to synchronously drive each length adjustment member (42) to retract so that each flexible tension member (41) applies a consistent radial clamping force to the circular template assembly (2); The digital twin processing unit is used to construct a digital twin model based on the design parameters of the square column to round column structure to be constructed, and to simulate and calculate the specification parameters of the required square template components and round template components, as well as the target clamping force parameters of each flexible tension member (41).

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