Composite material special-shaped permanent template, preparation method thereof and special-shaped composite material concrete composite structure

Abstract

The invention discloses a composite material special-shaped permanent template, a manufacturing method thereof and a special-shaped composite material concrete composite structure. The composite material special-shaped permanent template comprises a special-shaped polymer core mold manufactured through 3D printing and a winding layer wound around the surface of the polymer core mold. The preparation method comprises the steps that a three-dimensional model of a to-be-built special-shaped concrete composite structure is built according to the design requirement of the composite material special-shaped permanent formwork, and material parameters of the polymer layer and the winding layer are optimized based on results such as internal force distribution of the composite structure; according to the optimized 3D printing parameters, a special-shaped polymer core mold is manufactured through 3D printing; and according to the optimized winding parameters, a winding layer is prepared on the surface of the polymer core mold through winding equipment, and the composite material special-shaped permanent formwork is obtained. And the special-shaped permanent template with high machining precision is prepared. And concrete is poured into the special-shaped permanent formwork, so that the special-shaped composite material concrete composite structure can be obtained. The formwork is a permanent formwork and does not need to be disassembled.

Description

Technical Field

[0001] The invention relates to the technical field of preparing special-shaped structural templates, and in particular to a composite material special-shaped permanent template and a preparation method thereof, and a special-shaped composite material concrete combined structure. Background Art

[0002] Formwork engineering is one of the key links in the construction process of concrete structures and composite structures, and has a significant impact on the quality, safety, progress and economic benefits of construction projects. At present, the types of special-shaped concrete structure formwork commonly used in engineering can be divided into wooden formwork, metal formwork (steel, aluminum) and polymer formwork according to the material. Among them, glued wood formwork is the most widely used formwork type in concrete engineering construction, but it is only suitable for making special-shaped concrete structures with simple curved surfaces, and it is basically not reusable, difficult to recycle after being discarded, and easy to pollute the environment. Steel formwork and aluminum alloy formwork are produced by bending, cutting and welding metal sheets in factories or on-site, and can be used to cast special-shaped concrete structures with high dimensional accuracy. However, metal formwork has a large deadweight and requires a crane to complete loading and unloading and transportation. In addition, there are many splicing gaps, which leads to a decrease in the flatness of the concrete surface. In addition, the production of special-shaped metal formwork is difficult and the cost is high. Polymer formwork is mainly made by thermoforming combined with CNC wire cutting. Commonly used materials include polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polylactic acid (PLA), etc. Polymer formwork has a high turnover rate, low formwork cost and strong designability, but the rigidity and strength of pure polymer formwork are low and it is easily affected by steel bar welding. Its current market share is only about 10%.

[0003] Composite formwork is a type of formwork with good mechanical properties that is reinforced by adding dispersed or continuous fibers to a polymer matrix. There are two types of composite formwork currently used in engineering: one is that the formwork is made entirely of composite materials; the other is composed of composite panels and supporting structures. Compared with traditional formwork, composite formwork has the advantages of good mechanical properties and durability, light weight, easy handling and construction. However, the traditional manufacturing process of composite formwork (including resin transfer molding technology, compression molding, extrusion molding, etc.) is relatively complicated, requires corresponding molds and special equipment, and has a high manufacturing cost. Although composite formwork has a high engineering application value, if the components or nodes in the concrete structure or composite structure are irregular (special-shaped), the difficulty and cost of making the formwork will increase significantly.

[0004] Therefore, the existing composite formwork technology needs to be further improved and upgraded, especially inventions and innovations should be carried out to address the problems in the production of composite special-shaped permanent formwork and concrete structures. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a composite material special-shaped permanent formwork and a preparation method thereof, and a special-shaped composite material concrete combined structure, aiming to solve the problems of the existing special-shaped permanent formwork being difficult to form, low processing precision, and high cost.

[0006] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0007] In a first aspect, a composite material special-shaped permanent formwork and a preparation method thereof, and a special-shaped composite material concrete composite structure, wherein the composite material special-shaped permanent formwork comprises a polymer core mold made by 3D printing and a winding layer wound on the surface of the polymer core mold; the center of the special-shaped polymer core mold has a cavity for filling concrete; the preparation comprises the following steps:

[0008] S1. Establishing a three-dimensional model of the special-shaped concrete composite structure to be constructed according to the design requirements of the composite material special-shaped permanent formwork, wherein the design requirements include: appearance, structure, bearing capacity and durability;

[0009] S2, calculating the three-dimensional model to obtain the internal force distribution result, and optimizing the 3D printing parameters of the special-shaped polymer core mold based on the internal force distribution result to obtain the optimized 3D printing parameters; optimizing the winding parameters of the winding layer to obtain the optimized winding parameters;

[0010] S3. According to the optimized 3D printing parameters, the special-shaped polymer core mold is manufactured by 3D printing; according to the optimized winding parameters, a winding layer is prepared on the surface of the polymer core mold by a winding device to obtain the special-shaped permanent template of the composite material.

[0011] The following are preferred technical solutions of the present invention, but are not intended to limit the technical solutions provided by the present invention. Through the following preferred technical solutions, the objectives and beneficial effects of the present invention can be better achieved and realized.

[0012] As a preferred technical solution, the method for making a composite material special-shaped permanent formwork, wherein the step S1 comprises:

[0013] According to the design requirements, the shapes, sizes, material types of the special-shaped polymer core mold and the winding layer, the arrangement of the winding layer, and the type of concrete are preset to establish a three-dimensional model of the special-shaped concrete composite structure to be constructed.

[0014] As a preferred technical solution, the method for making a composite material special-shaped permanent formwork, wherein S2 specifically includes:

[0015] S20, calculating the three-dimensional model using finite element analysis to obtain internal force distribution results;

[0016] S21. Optimizing the type of material, printing speed and filling rate of 3D printing according to the internal force distribution result to obtain optimized 3D printing parameters; and / or optimizing the winding path and winding thickness of the winding layer to obtain optimized winding parameters;

[0017] S22, obtaining an optimized three-dimensional model based on the optimized 3D printing parameters and the winding parameters, and verifying the strength and rigidity of the optimized three-dimensional model using loads and boundary conditions to determine whether the strength and rigidity meet the design requirements;

[0018] S23. If the design requirements are not met, repeat steps S20 to S22 until the strength and rigidity meet the design requirements, and use the 3D printing parameters and the winding parameters that meet the design requirements as parameters for making the composite material special-shaped permanent template.

[0019] As a preferred technical solution, the method for manufacturing the composite material special-shaped permanent formwork, wherein, if the strength and rigidity meet the design requirements, the optimized 3D printing parameters and the winding parameters are used as parameters for manufacturing the composite material special-shaped permanent formwork.

[0020] As a preferred technical solution, the method for making a composite material special-shaped permanent formwork, wherein step S3 comprises:

[0021] S30, selecting a corresponding printing polymer material and setting a corresponding core mold thickness, hollow form, and stiffening rib form according to the optimized 3D printing parameters, and using 3D printing to manufacture the polymer core mold.

[0022] As a preferred technical solution, the method for making a composite material special-shaped permanent formwork, wherein after step S30, further comprises:

[0023] S31. Record the processing parameters of the polymer core mold produced by 3D printing, and test the mechanical performance indicators of the produced polymer core mold. If the test results do not meet the design requirements, adaptively adjust the parameters of the polymer core mold to make the mechanical performance indicators meet the design requirements; the processing parameters include: the nozzle temperature of the printing device, the hot bed temperature, the axis movement speed of the printing device, the workpiece filling rate, the filling mode and the attachment method.

[0024] As a preferred technical solution, the method for making a composite material special-shaped permanent formwork, wherein step S3 comprises:

[0025] S32, according to the optimized winding parameters, using a winding device to wind the winding material impregnated with the resin on the surface of the polymer core mold;

[0026] S33, recording the winding angle and winding thickness, and performing mechanical property test on the composite material template. If the test result does not meet the design requirements, the winding angle and / or the thickness are optimized.

[0027] As a preferred technical solution, the method for manufacturing a composite material special-shaped permanent formwork, wherein the winding parameters of the winding layer are optimized based on the internal force distribution results obtained by the three-dimensional model, comprises:

[0028] According to the internal force distribution result, a multi-axis winding machine or a winding robot is used to simulate the winding path through a CAD / CAM system to define the motion trajectory of the wire outlet end of the winding device and the movement or rotation speed of each degree of freedom.

[0029] In a second aspect, a composite material special-shaped permanent formwork is provided, wherein the composite material special-shaped permanent formwork is prepared by the preparation method described above.

[0030] In a third aspect, a special-shaped composite material concrete composite structure is provided, wherein the special-shaped composite material concrete composite structure can be obtained by pouring concrete in a manufactured special-shaped permanent formwork; the formwork is a permanent formwork that does not need to be removed, serves as a structural load-bearing material and provides protection for the internal concrete and reinforcing materials.

[0031] In a fourth aspect, a special-shaped composite concrete composite structure is provided, wherein the special-shaped composite concrete composite structure comprises: the composite special-shaped permanent formwork as described in the second aspect, concrete filled inside the composite special-shaped permanent formwork, and steel bars or composite reinforcement bars arranged at required positions.

[0032] Beneficial effects: Compared with the prior art, the present invention establishes a three-dimensional model of a special-shaped composite concrete composite structure according to the structural design requirements, optimizes the selection of suitable printing and winding materials and printing and winding parameters, solves the problems of difficult forming, easy deformation and manufacturing accuracy of special-shaped templates, and reduces the cost and time required for designing and making templates.

[0033] The special-shaped polymer core mold is printed and formed using 3D printing technology, and used as a winding template to form a composite material special-shaped permanent template for subsequent concrete pouring operations. By manipulating the winding equipment, the fibers impregnated with resin (such as epoxy, vinyl resin) are wrapped around the surface of the 3D printed special-shaped core mold, providing sufficient circumferential constraints for the subsequent pouring of the internal concrete, thereby improving the structural stress performance; at the same time, the local tensile bearing capacity can be increased through fiber arrangement, thereby reducing or even eliminating the internal reinforcement. This type of formwork has high mechanical properties and can be used as a permanent formwork to bear structural loads, eliminating the problem of demolding difficulties. The polymer core mold and the winding layer can provide double-layer anti-corrosion protection for the concrete and enhance the durability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a flow chart of a method for making a composite material special-shaped permanent template provided by the present invention;

[0035] Figure 2 3 is a schematic diagram of the manufacturing process of the special-shaped composite material concrete composite structure provided by the present invention, wherein 3D printing of a core mold is performed (a), fiber winding is performed on the surface of the core mold (b), concrete is poured after the winding is completed (c), and curing and molding are performed to obtain the special-shaped composite material concrete composite structure;

[0036] Figure 3 It is a cross-sectional schematic diagram of a special-shaped composite material concrete combined structure provided by the present invention. DETAILED DESCRIPTION

[0037] The present invention provides a method for manufacturing a composite material special-shaped permanent formwork and a special-shaped composite material concrete composite structure. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementation methods. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and do not mean a necessary sequence, unless otherwise specified that a certain sequence must be followed. The serial numbers themselves, such as "first", "second", etc., assigned to the components herein are only used to distinguish the objects described and do not have any order or technical meaning.

[0039] like Figure 1 As shown, the present invention provides a method for making a composite material special-shaped permanent template, comprising the following steps:

[0040] S1. According to the design requirements of the composite material special-shaped permanent formwork, a three-dimensional model of the special-shaped concrete composite structure to be constructed is established; the design requirements include: appearance, structure, bearing capacity and durability.

[0041] Specifically, before making the formwork, a special-shaped composite concrete composite structure model is first established according to the preset parameters. The model can be established according to the design requirements of the appearance, structure, bearing capacity, durability, etc. of the composite structure to be made. The shape, size, fiber arrangement, etc. of the core mold and the winding layer are preliminarily designed, and the material parameters of the concrete, winding fiber, and formwork are determined. The load and boundary conditions are input, and the strength and rigidity of the composite structure are verified. Among them, the verification of the mechanical performance indicators of the components or nodes can also be completed by modeling and analysis with the help of finite element analysis, such as calculating internal forces, stresses, strains, displacements and other indicators, and verifying the strength and rigidity of the structure. By verifying the strength and rigidity of the structure in advance, the requirements of the structural forming ability, mechanical properties, durability, etc. can be better guaranteed. Because the special-shaped permanent formwork has certain particularities, which are embodied in: irregular shape; large size (500-2000mm); the polymer core mold needs to have sufficient strength and rigidity to ensure that there will be no large deformation during the winding process; because the composite material special-shaped permanent formwork is used as a permanent formwork, it needs to have certain mechanical properties (i.e. strength and rigidity) to provide a certain constraint on the internal concrete, and can withstand a certain axial load and bending load; there are durability requirements to avoid corrosion caused by the atmosphere, marine environment, etc.; there may be connections between block formworks or combined structures. It should be noted that the model involved in the three-dimensional modeling and the specific construction process of the model belong to the known technology in the art. What is to be expressed here is to analyze the stress conditions of the designed formwork with the help of the constructed three-dimensional model, and optimize the materials and process parameters involved in the formwork construction according to the stress conditions.

[0042] S2. Calculate the three-dimensional model to obtain internal force distribution results. Based on the internal force distribution results, optimize the 3D printing parameters of the special-shaped polymer core mold to obtain optimized 3D printing parameters; optimize the winding parameters of the winding layer to obtain optimized winding parameters.

[0043] Specifically, the three-dimensional model can be analyzed with the help of finite element analysis, and indicators such as stress, strain, and displacement can be calculated, and optimization targets can be set for the 3D printing of the polymer core mold and the winding layer winding, such as setting the stress and strain distribution of the polymer core mold and the winding layer, and the deformation of the structure and other quantifiable indicators, which are used to better control the quality of the subsequent printing core mold, such as judging whether the core mold printed or the wound fiber in the subsequent steps meets the optimization target. If the optimization target is not met, the variables such as material category, control parameters, and structural geometric dimensions should be adjusted, and the process is repeated until the optimization target is met. In other words, the method provided by the present invention includes an optimization step, and the printed and wound composite material special-shaped permanent formwork can have higher performance through continuous iteration and optimization. It should be noted that the internal force in the text refers to the force received in the special-shaped concrete composite structure to be built. Different shapes and positions are subjected to different forces. By analyzing the internal stress conditions, targeted countermeasures can be taken.

[0044] S3. According to the optimized 3D printing parameters, the special-shaped polymer core mold is manufactured by 3D printing; according to the optimized winding parameters, a winding layer is prepared on the surface of the polymer core mold by a winding device to obtain the special-shaped permanent template of the composite material.

[0045] Specifically, according to the optimization results, the corresponding 3D printing polymer material type and the parameters used for 3D printing are selected. The materials commonly used for printing polymer core molds include but are not limited to PLA, ABS, ASA and other commonly used 3D printing materials. 3D printing parameters include nozzle temperature, moving speed, path, material filling rate, etc.

[0046] The special-shaped polymer core mold is made by 3D printing, and the polymer core mold can be printed by a 3D printer based on fused deposition modeling (FDM) or fused granular fabrication (FGF) technology. The core mold is made of materials with corresponding performance according to the purpose and structural requirements of the special-shaped concrete composite structure to be built. During the preparation of the core mold, the processing parameters such as the nozzle temperature, the hot bed temperature, the printer shaft movement speed, the workpiece filling rate, the filling mode and the attachment method should be recorded in detail. If the core mold actually printed and produced does not meet the optimization goals set in the above steps, return to modify the printing material, structural geometric dimensions and printing parameters until the printed core mold meets the design requirements. The core mold should be as thin as possible but must meet the stiffness and strength requirements required for winding. The core mold can also be hollowed out as a skeleton required for winding. Horizontal and longitudinal stiffening ribs can be printed inside the core mold to increase the stiffness of the core mold and enhance the bonding performance between it and the inner filling concrete.

[0047] Specifically, the fiber winding path and thickness are determined according to the optimized winding layer parameters, and the fibers impregnated with resin (such as epoxy or vinyl resin) are wound on the surface of the polymer core mold using a winding device to obtain the composite material special-shaped permanent template.

[0048] Taking the winding material as fiber as an example, the CAD / CAM system can be used to simulate the winding path, considering the influencing factors such as surface friction, winding angle, winding speed and the spatial position of the winding fiber port, and output the rotation speed of the winding machine and the motion trajectory of the wire outlet. Use fiber winding equipment (such as industrial winding machine) or intelligent winding equipment (such as robotic arm, multi-axis robot) to wind the core mold surface according to the simulation results to ensure that the fiber speed is stable and the winding path is attached to the core mold surface according to the expected path. The winding fiber materials are glass fiber, basalt fiber, aramid fiber, carbon fiber, etc., and should be specifically selected according to the purpose and structural requirements of the structure. During the fiber winding process, the key parameters related to the winding angle, thickness, speed, and path planning should be recorded in detail. If the winding result does not meet the optimization goals set in the above steps, the material, winding parameters, structural geometry and other parameters should be modified and returned for recalculation and analysis until the wound winding layer meets the design requirements. It is easy to understand that the winding material can be a single fiber material or a mixed variety of fiber materials.

[0049] That is to say, the fiber winding technology of the present invention is specifically implemented based on the results of the structural mechanics analysis model. First, a mechanical analysis model of a special-shaped composite concrete composite structure is established (a more accurate and complex three-dimensional finite element model can also be established), and the fiber angle, thickness, and density that should be wound in each area are determined by the internal force, stress, and strain distribution of the structure, and a fiber winding path program is formed. If the winding path does not meet the structural optimization goal, the structural mechanics analysis model (or finite element model) is modified, and the winding model is iteratively updated until the optimization goal is met. Finally, the fiber winding equipment winds the polymer core mold that has been 3D printed according to the winding path program. It should be noted that, in theory, iterating the core mold and the winding layer is not a necessary step, but since errors will occur during the actual processing (including 3D printing and fiber winding), and based on the goal of further reducing material consumption and thus reducing costs and increasing efficiency, optimization iterations are required.

[0050] Based on the same inventive concept, the present invention provides a composite material special-shaped permanent formwork, and the composite material special-shaped permanent formwork is prepared by the above-mentioned preparation method.

[0051] Based on the same inventive concept, the present invention provides a special-shaped composite concrete composite structure, such as Figure 3As shown, the special-shaped composite concrete composite structure includes a composite special-shaped permanent formwork (3D printing core formwork and fiber winding layer), concrete filled in the formwork, and steel bars or composite reinforcement bars arranged at required positions.

[0052] Specifically, combined Figures 2 to 3 After the composite material special-shaped permanent formwork is prepared, concrete is poured into the permanent formwork on which the fiber winding has been completed, and maintenance is carried out in accordance with the specifications. After the components or nodes of the special-shaped composite structure are cured, test tests or assembly and installation of the engineering structure can be carried out (since the composite material formwork can be used permanently, the demoulding process can be omitted). Among them, before pouring concrete in the composite material special-shaped permanent formwork, reinforcement (rebars, composite material bars, etc.) or other reinforcement materials can be pre-arranged to improve the tensile bearing capacity of the structure. Since the winding fibers can provide a certain tensile bearing capacity for the structure, a small amount of reinforcement or no reinforcement can be added inside the concrete. The composite material special-shaped permanent formwork and concrete can be formed in one go, or they can be assembled using block connection technology. It has high operational flexibility.

[0053] In summary, the present invention adopts 3D printing polymer to make special-shaped core molds, and uses continuous fiber winding process to make composite material special-shaped permanent formwork. The use of 3D printing polymer and winding technology to customize the formwork of complex-shaped composite structural components or nodes solves the problems of difficult molding, easy deformation, low manufacturing precision and high cost of special-shaped permanent formwork, and reduces the cost and time required for designing and making formwork. The present invention can also be extended to the development of manufacturing technology and equipment for continuous winding according to the characteristics of composite material special-shaped permanent formwork; according to the stress characteristics of special-shaped permanent formwork during concrete pouring and service stages, a new winding technology for special-shaped permanent formwork is established in combination with manufacturing process, interface mechanics analysis, finite element simulation, etc. The present invention uses continuous winding technology to wind fibers impregnated with resin (such as epoxy, vinyl resin) on the special-shaped core mold, ensuring that the continuous fiber can efficiently and evenly cover the core mold, and the composite material formwork formed can provide stable constraints and protection for the concrete filled inside, thereby improving the bearing capacity and durability of the concrete composite structure.

[0054] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A method for making a composite material special-shaped permanent formwork, characterized in that: The composite material special-shaped permanent formwork comprises: a special-shaped polymer core mold made by 3D printing and a winding layer wound on the surface of the polymer core mold; the center of the special-shaped polymer core mold has a cavity for filling concrete; the manufacturing method comprises the following steps: S1. Establishing a three-dimensional model of the special-shaped concrete composite structure to be constructed according to the design requirements of the composite material special-shaped permanent formwork; the design requirements include: appearance, structure, bearing capacity and durability; S2, calculating the three-dimensional model to obtain the internal force distribution result, and optimizing the 3D printing parameters of the special-shaped polymer core mold based on the internal force distribution result to obtain the optimized 3D printing parameters; optimizing the winding parameters of the winding layer to obtain the optimized winding parameters; S3. According to the optimized 3D printing parameters, the special-shaped polymer core mold is manufactured by 3D printing; according to the optimized winding parameters, a winding layer is prepared on the surface of the polymer core mold by a winding device to obtain the special-shaped permanent template of the composite material.

2. The method for making a composite material special-shaped permanent formwork according to claim 1, characterized in that: The step S1 comprises: According to the design requirements, the shapes, sizes, material types of the special-shaped polymer core mold and the winding layer, the arrangement of the winding layer, and the type of concrete are preset to establish a three-dimensional model of the special-shaped concrete composite structure to be constructed.

3. The method for making a composite material special-shaped permanent formwork according to claim 2, characterized in that: The S2 specifically includes: S20, calculating the three-dimensional model using finite element analysis to obtain internal force distribution results; S21. Optimizing the type of material, printing speed and filling rate of 3D printing according to the internal force distribution result to obtain optimized 3D printing parameters; and / or optimizing the winding path and winding thickness of the winding layer to obtain optimized winding parameters; S22, obtaining an optimized three-dimensional model based on the optimized 3D printing parameters and the winding parameters, and verifying the strength and rigidity of the optimized three-dimensional model using loads and boundary conditions to determine whether the strength and rigidity meet the design requirements; S23. If the design requirements are not met, repeat steps S20 to S22 until the strength and rigidity meet the design requirements, and use the 3D printing parameters and the winding parameters that meet the design requirements as parameters for making the composite material special-shaped permanent template.

4. The method for making a composite material special-shaped permanent formwork according to claim 3, characterized in that: If the strength and rigidity meet the design requirements, the optimized 3D printing parameters and winding parameters are used as parameters for making the composite material special-shaped permanent template.

5. The method for making a composite material special-shaped permanent formwork according to claim 1, characterized in that: The step S3 comprises: S30, selecting a corresponding printing polymer material and setting a corresponding core mold thickness, hollow form, and stiffening rib form according to the optimized 3D printing parameters, and using 3D printing to manufacture the polymer core mold.

6. The method for making a composite material special-shaped permanent formwork according to claim 5, characterized in that: After step S30, the following steps are further included: S31. Record the processing parameters of the polymer core mold produced by 3D printing, and test the mechanical performance indicators of the produced polymer core mold. If the test results do not meet the design requirements, adaptively adjust the parameters of the polymer core mold to make the mechanical performance indicators meet the design requirements; the processing parameters include: the nozzle temperature of the printing device, the hot bed temperature, the axis movement speed of the printing device, the workpiece filling rate, the filling mode and the attachment method.

7. The method for making a composite material special-shaped permanent formwork according to claim 5, characterized in that: The step S3 comprises: S32, according to the optimized winding parameters, using a winding device to wind the winding material impregnated with the resin on the surface of the polymer core mold; S33, recording the winding angle and winding thickness, and performing mechanical property test on the composite material template. If the test result does not meet the design requirements, the winding angle and / or the thickness are optimized.

8. The method for making a composite material special-shaped permanent formwork according to claim 1, characterized in that: Based on the internal force distribution result obtained by the three-dimensional model, the winding parameters of the winding layer are optimized, including: According to the internal force distribution result, a multi-axis winding machine or a winding robot is used to simulate the winding path through a CAD / CAM system to define the motion trajectory of the wire outlet end of the winding device and the movement or rotation speed of each degree of freedom.

9. A composite material special-shaped permanent formwork, characterized in that: The composite material special-shaped permanent template is prepared by the preparation method described in any one of claims 1-8.

10. A special-shaped composite material concrete composite structure, characterized in that: The special-shaped composite material concrete combined structure comprises: the composite material special-shaped permanent formwork according to claim 9 and concrete filled inside the composite material special-shaped permanent formwork.

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