A FRP free-form surface concrete structure formwork system and its construction technology

Abstract

The present invention discloses a FRP free-form concrete structure formwork system and a construction process thereof, belonging to the field of civil construction technology. The formwork system includes an FRP bottom formwork and a supporting structure for supporting the same. The FRP bottom formwork is formed by splicing a plurality of bottom plates in sequence. The bottom plate includes an FRP curved surface panel and a back corrugated plate fixed on the back side of the FRP curved surface panel. The back corrugated plate is made of steel material, extends along the length direction of the FRP curved surface panel, and a portion of the back corrugated plate is formed in the FRP curved surface panel. The back corrugated plates of two adjacent bottom plates are connected by a connector. The supporting structure includes a plurality of vertical support rods, an adjustable bottom bracket installed at the bottom of the vertical support rod, and a horizontal stabilizing rod connecting the vertical support rod. The device and process of the present invention can effectively meet the safety of free-form concrete structure construction, improve the construction speed, ensure the construction accuracy, and effectively solve the problems faced by the current free-form concrete structure construction.

Description

Technical Field

[0001] The invention belongs to the technical field of civil construction, and in particular relates to an FRP free-form surface concrete structure formwork system and a construction process thereof. Background Art

[0002] With the pursuit of architectural art and the improvement of construction skills, more and more beautiful curved and curved concrete structures have appeared in architectural designs. Compared with traditional flat concrete structures, the construction technology of curved and curved concrete structures, especially free-form concrete structures, often needs to be adjusted according to the actual structural form. They are poor in versatility and extremely complex. The construction period is significantly increased, the construction cost is soaring, and the final structural quality and visual effect are often difficult to satisfy. Therefore, solving the construction of curved concrete structures with high quality and efficiency has always been a major difficulty in the current engineering community.

[0003] The key construction technology of curved concrete structure lies in the formwork system. In current projects, the main formwork used, including curved structures, is still wooden formwork and its corresponding support system. The wooden formwork system has always been used to construct flat structures, and its technology is relatively mature. However, when it is introduced to the construction of curved structures, it shows more inadaptability and there are a series of problems. First of all, the raw materials of wooden formwork are generally flat panels, and curved wooden formwork is generally made by bending flat panels. Therefore, wooden formwork is actually only suitable for single-curved (flattenable) structures, and cannot be directly processed into hyperbolic or even free-formed structural formworks that cannot be flattened. Forcibly simulating hyperbolic surfaces will cause problems such as reduced surface accuracy and poor surface quality. In addition, for curved structures, on-site splicing of wooden formwork and the erection of its supporting support system are more complicated. In order to ensure the accuracy of the curved structure, a large number of measurements and adjustments of temporary measures structures are often required, resulting in slow splicing and a long construction period. At the same time, in the process of constructing the curved structure wooden formwork system, the wooden formwork has low strength and poor rigidity and is easily damaged, which further increases costs and prolongs construction time. Since curved concrete structures often have higher precision and surface visual requirements, the wooden formwork and its supporting structure are prone to defects on the surface after they are finally dismantled, and subsequent surface repairs are often required. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a FRP free-form surface concrete structure formwork system and its construction process, which can effectively meet the construction safety of the free-form surface concrete structure while improving the construction speed, ensuring the construction accuracy, and effectively solving the problems currently faced by the construction of free-form surface concrete structures.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The invention discloses an FRP free-curved surface concrete structure formwork system, comprising an FRP bottom formwork and a supporting structure for supporting the same, wherein the FRP bottom formwork is formed by sequentially splicing a plurality of bottom plates, wherein the bottom plate comprises an FRP curved surface panel and a back corrugated plate fixed on the back side of the FRP curved surface panel, wherein the back corrugated plate is made of steel material, extends along the length direction of the FRP curved surface panel, a portion of the back corrugated plate is formed in the FRP curved surface panel, and the back corrugated plates of two adjacent bottom plates are connected by a connecting piece; the supporting structure comprises a plurality of vertical support rods, an adjustable bottom bracket installed at the bottom of the vertical support rods, and a horizontal stabilizing rod connected to the vertical support rods; both ends of the back corrugated plate are connected to the vertical support rods, and the adjustable bottom bracket is used to adjust the supporting height of the vertical support rods, and the bending curvature of the FRP curved surface panel can be adjusted by adjusting the height difference of the vertical support rods at both ends of the back corrugated plate.

[0007] Furthermore, two groups of back corrugated plates are arranged in parallel on the back side of the FRP curved panel, and a slide groove is opened on the back corrugated plate. A first slide rod and a second slide rod are slidably arranged in the slide groove, and the two slide rods are fixed to the back corrugated plates by a locking piece; a panel deformation adjustment device is installed between the first slide rod and the second slide rod.

[0008] Further, the panel deformation adjustment device includes a first sliding sleeve, a first support plate, a second sliding sleeve, a second support plate, bolts and a tight-fitting structure, the first sliding sleeve is slidably installed on the outer side of the first sliding rod, the first support plate is fixed to the first sliding sleeve, an open groove is provided on the outer side of the first support plate, the second sliding sleeve is slidably installed on the outer side of the second sliding rod, the second support plate is fixed to the second sliding sleeve, an open groove is provided on the outer side of the second support plate, the first support plate is stacked on the upper side of the second support plate, the two are connected by bolts, and the opening grooves of the first support plate and the second support plate are combined to form the mounting position of the tight-fitting structure.

[0009] Furthermore, the abutment structure includes a first semicircular tube, a second semicircular tube, a positioning tube, a limiting seat and a screw. The first semicircular tube is fixed at the root of the opening groove of the first support plate, and the second semicircular tube is fixed at the root of the opening groove of the second support plate. The first semicircular tube and the second semicircular tube are combined to form a mounting hole. The positioning tube is limited by the limiting seat after passing through the mounting hole. The screw is threadedly connected to the positioning tube, and the outer end of the screw abuts against the back side of the FRP curved panel.

[0010] Furthermore, circular holes for making way for the locking member are provided at both ends of the slide groove, and notches for making way for the first semicircular tube or the second semicircular tube are provided on the slide groove adjacent to the circular holes.

[0011] Furthermore, a vertical guide groove is provided on the vertical support rod, a guide rod is slidably arranged in the vertical guide groove, a guide hole is provided on the horizontal stabilizing rod, and the guide rod passes through the vertical guide groove and the guide rod at the same time, and then the vertical support rod and the horizontal stabilizing rod are connected by a locking nut.

[0012] Furthermore, an FRP top formwork is installed on the upper side of the FRP bottom formwork, and a tension screw system is connected between the FRP top formwork and the FRP bottom formwork.

[0013] Furthermore, the tension screw system includes tension screws, top supports, supporting steel pipes and tension nuts. The two ends of the tension screws are respectively connected to nuts after passing through the FRP top formwork and the FRP bottom formwork. Top supports are installed at both ends of the tension screws corresponding to the nuts. Supporting steel pipes are arranged between the top supports and the FRP top formwork and the FRP bottom formwork.

[0014] A construction process of an FRP free-form surface concrete structure formwork system, using the concrete structure formwork system as described above, firstly erecting a support structure during construction, the bottom of the vertical support rod adopts an adjustable bottom support and is directly supported on the ground; during construction and erection, firstly measuring and laying out on the ground, and then splicing the support structure layer by layer from bottom to top until it is completed; then laying the bottom plates piece by piece on the completed support structure, and connecting the back corrugated plates of two adjacent bottom plates by connecting pieces; then supporting the back corrugated plates on the support structure, thereby completing the erection of the FRP bottom formwork; after the splicing is completed, the concrete is tied layer by layer on the upper part of the FRP bottom formwork soil structure reinforcement; after all the concrete structure reinforcement is laid, the FRP top formwork is laid on the concrete structure reinforcement, and the top plates of adjacent FRP top formworks are fastened and connected by bolts; then the tension screw system is constructed through the holes reserved on the FRP bottom formwork and the FRP top formwork; the completed system is measured again, the composite accuracy is corrected, and the concrete structure can be poured after meeting the requirements; the concrete is poured through the construction joints of the sections during the structural construction stage, or the concrete pouring holes reserved on the FRP top formwork; after the pouring is completed, the concrete structure is cured, and the FRP curved formwork system is removed after reaching the demolding strength.

[0015] The beneficial effects of the present invention are:

[0016] The present invention discloses a FRP free-form surface concrete structure formwork system and its construction process:

[0017] 1) As the panel adopts FRP curved panel, FRP sheet has excellent processing performance and is not restricted in processing shape. It can be processed into various required free-form surfaces with low cost and high precision, which can meet the actual construction needs of various curved structure projects, thus directly solving the construction feasibility of various curved concrete structures.

[0018] 2) The components of the present invention are spliced ​​and can be prefabricated in the factory in advance. The on-site splicing and disassembly speed is fast, and the adjustment work is less, which can effectively save the on-site construction period; the FRP panel has high strength and is not easily damaged during transportation and construction. Generally, it does not need to be returned or returned to the factory for repair, which can further ensure the surface accuracy and construction period of the curved structure. At the same time, for structures with repetitive curved surfaces, they can be directly recycled and reused; after use, the back ribs and supporting structures can be recycled and reused, further saving costs.

[0019] 3) In the structure disclosed in the present invention, the top of the vertical support rod is connected to the FRP bottom template back rib, thereby ensuring the construction speed; preferably, the bottom support of the support structure is set as an adjustable bottom bracket, which can be used to adjust the height of the entire support structure component to facilitate the positioning of the curved support structure. At the same time, by adjusting the height difference of the vertical support rods at both ends of the back rib board, the curvature of the FRP curved surface panel can be adjusted to meet the needs of different curved surface shapes, reducing the impact of panel manufacturing errors and assembly errors on the later construction accuracy.

[0020] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0022] Figure 1 It is a structural schematic diagram of the template system of the present invention;

[0023] Figure 2 The structure of the bottom plate Figure 1 ;

[0024] Figure 3 This is the main view of the bottom panel;

[0025] Figure 4 The structure of the bottom plate Figure 2 ;

[0026] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0027] Figure 6 This is an exploded view of the close-fitting structure;

[0028] Figure 7 It is a structural schematic diagram of an adjustable bottom support;

[0029] Figure 8 Flow chart of the construction process.

[0030] The markings in the accompanying drawings are as follows: FRP bottom template 1, supporting structure 2, FRP curved panel 3, back corrugated board 4, vertical support rod 5, adjustable bottom support 6, horizontal stabilizing rod 7, slide groove 8, first slide rod 9, second slide rod 10, locking piece 11, first sliding sleeve 12, first support plate 13, second sliding sleeve 14, second support plate 15, bolt 16, open groove 17, first semicircular tube 18, second semicircular tube 19, positioning tube 20, limit seat 21, screw 22, round hole 23, notch 24, vertical guide groove 25, guide rod 26, locking nut 27, FRP top template 28, tension screw 29, top support 30, support steel pipe 31, tension nut 32. DETAILED DESCRIPTION

[0031] like Figures 1 to 7 As shown, the present invention discloses a FRP free-form concrete structure formwork system, including an FRP bottom formwork 1 and a support structure 2 for supporting the same. The FRP bottom formwork 1 is in an arc shape as a whole, with its inner concave surface facing upward, and can be used as a formwork for concrete structure construction. The support structure 2 is located at the bottom of the FRP bottom formwork 1, and is used to support the deadweight of the concrete structure and the formwork system during the pouring and curing of the curved concrete structure. The support structure 2 is made of steel as a whole, and has good support strength. The proposed construction structure example in the attached drawings of the present invention is a free-form concrete shear wall structure with a thickness of 400mm and 4 layers of C20150 bidirectionally arranged steel bars.

[0032] Specifically, the FRP bottom formwork 1 disclosed in the present invention is formed by splicing a number of bottom plates in sequence along the length direction, the bottom plate includes an FRP curved panel 3 and a back corrugated plate 4 fixed on the back side of the FRP curved panel 3, the size of the FRP curved template disclosed in the present invention is in principle less than 1.2m × 1.2m, the FRP curved panel 3 faces the side where the concrete structure is located, the back corrugated plate 4 is made of steel material, the back corrugated plate 4 extends along the length direction of the FRP curved panel 3, part of the back corrugated plate 4 is formed in the FRP curved panel 3, and the back corrugated plates 4 of two adjacent bottom plates are connected by a connecting piece; the back corrugated plates 4 of the present invention are two groups, and can be set to multiple groups as needed, which can be understood by those skilled in the art. The various components of the present invention are spliced ​​in a splicing form, and can be prefabricated in the factory in advance. The on-site splicing and disassembly speed is fast, the adjustment work is less, and the on-site construction period can be effectively saved; the FRP panel has high strength and is not easily damaged during transportation and construction.

[0033] The supporting structure 2 disclosed in the present invention includes a plurality of vertical support rods 5, an adjustable bottom bracket 6 installed at the bottom of the vertical support rods 5, and a horizontal stabilizer rod 7 connected to the vertical support rods 5; the vertical support rods 5 are used to provide the main supporting force, thereby supporting the FRP bottom template 1, and both ends of the back corrugated board 4 are connected with vertical support rods 5, and the adjustable bottom bracket 6 is used to adjust the support height of the vertical support rods 5. By adjusting the height difference of the vertical support rods 5 at both ends of the back corrugated board 4, the curvature of the FRP curved surface panel 3 can be adjusted. After the FRP curved surface panel 3 is installed, the curvature of its support can be adjusted in real time to adapt to the curved surface shape requirements of different concrete structure designs, and reduce the influence of panel manufacturing errors and assembly errors on the accuracy of later construction.

[0034] In this embodiment, two groups of back corrugated plates 4 are arranged in parallel on the back side of the FRP curved panel 3. The back corrugated plates 4 are perpendicular to the FRP curved panel 3. The two groups of back corrugated plates 4 are arranged in parallel and spaced apart. A slide groove 8 is provided on the back corrugated plate 4. The bending direction of the slide groove 8 is consistent with the bending direction of the FRP curved panel 3, which can ensure that the sliding rod and the FRP curved panel 3 are kept at a uniform interval. A first sliding rod 9 and a second sliding rod 10 are slidingly arranged in the slide groove 8. The first sliding rod 9 and the second sliding rod 10 are arranged at intervals. The two sliding rods are fixed to the back corrugated plate 4 by a locking member 11; a panel deformation adjustment device is installed between the first sliding rod 9 and the second sliding rod 10. In the device of the present invention, by sliding the first sliding rod 9 and the second sliding rod 10, the panel deformation adjustment device can be adjusted to different positions on the FRP curved panel 3, so that the deformation of the panel at different positions can be corrected to meet actual needs and further reduce the structural error of the concrete structure after construction.

[0035] In this embodiment, the panel deformation adjustment device includes a first sliding sleeve 12, a first support plate 13, a second sliding sleeve 14, a second support plate 15, a bolt 16 and a tight-fitting structure. The first sliding sleeve 12 is slidably installed on the outer side of the first sliding rod 9, the first support plate 13 is fixed to the first sliding sleeve 12, the first support plate 13 extends toward the side where the second support plate 15 is located, and an open groove 17 is provided on the outer side of the first support plate 13. The second sliding sleeve 14 is slidably installed on the outer side of the second sliding rod 10, the second support plate 15 is fixed to the second sliding sleeve 14, the second support plate 15 extends toward the side where the first support plate 13 is located, and an open groove 17 is provided on the outer side of the second support plate 15. The first support plate 13 is stacked on the upper side of the second support plate 15, and the open grooves 17 of the two partially overlap. The first support plate 13 and the second support plate 15 are connected by bolts 16, and the open grooves 17 of the first support plate 13 and the second support plate 15 are combined to form an installation position of the tight-fitting structure, which can facilitate the installation of the tight-fitting structure.

[0036] In the embodiment of the present invention, the combination of the first support plate 13 and the second support plate 15 can form a reaction force support of the close-fitting structure, which can facilitate the subsequent correction of the close-fitting structure. After the correction is completed, the first support plate 13 and the second support plate 15 can be used to change the position of the installation position, so that the support position can be quickly adjusted, which meets the actual support needs and improves the correction adjustment efficiency.

[0037] In this embodiment, the abutment structure includes a first semicircular tube 18, a second semicircular tube 19, a positioning tube 20, a limiting seat 21 and a screw 22. The first semicircular tube 18 and the second semicircular tube 19 can be combined to form a complete circular tube. The first semicircular tube 18 is fixed at the root of the opening groove 17 of the first support plate 13, and the second semicircular tube 19 is fixed at the root of the opening groove 17 of the second support plate 15. The first semicircular tube 18 and the second semicircular tube 19 are enclosed to form a mounting hole. After the positioning tube 20 passes through the mounting hole, it is limited by the limiting seat 21. The screw 22 is threadedly connected with the positioning tube 20, and the outer end of the screw 22 abuts against the back side of the FRP curved panel 3. By rotating the screw 22, the screw 22 can be driven to move axially, and under the support of the reaction force of the support plate, a local force is applied to the back side of the FRP curved panel 3, which plays a role in correction. The outer end of the screw 22 is formed into a spherical shape to avoid damage to the surface of the FRP curved panel 3.

[0038] In this embodiment, circular holes 23 are provided at both ends of the slide groove 8 for making way for the locking member 11, and notches 24 are provided on the slide groove 8 adjacent to the circular holes 23 for making way for the first semicircular tube 18 or the second semicircular tube 19. It is convenient to pass the entire abutment structure through the back corrugated board 4, so as to facilitate movement to various positions on the FRP curved surface panel 3.

[0039] In this embodiment, a vertical guide groove 25 is provided on the vertical support rod 5, a guide rod 26 is slidably provided in the vertical guide groove 25, a guide hole is provided on the horizontal stabilizing rod 7, and the guide rod 26 passes through the vertical guide groove 25 and the guide rod 26 at the same time, and then the vertical support rod 5 and the horizontal stabilizing rod 7 are connected by a locking nut 27. By providing the horizontal stabilizing rod 7, the vertical support rod 5 can be supported in the horizontal direction, thereby increasing the stability of the entire support structure 2. The vertical guide groove 25 provided on the vertical support rod 5 can facilitate the adjustment of the height of the vertical support rod 5 itself while facilitating the connection of the horizontal stabilizing rod 7.

[0040] In this embodiment, an FRP top template 28 is installed on the upper side of the FRP bottom template 1, and a tension screw 29 system is connected between the FRP top template 28 and the FRP bottom template 1. The block pattern of the FRP top template 28 is similar to that of the FRP bottom template 1, and will not be repeated here. By adopting the tension screw 29 system, the stability of the overall structure can be increased.

[0041] In some other embodiments, for curved concrete structures with smaller thickness or fewer steel layers, the tension screw 29 can directly use a single water-stop tension screw 29; preferably, for curved concrete structures with larger thickness or more steel layers, the tension screw 29 can use a segmented water-stop tension screw 29.

[0042] In this embodiment, the tension screw 29 system includes a tension screw 29, a top support 30, a support steel pipe 31 and a tension nut 32. The two ends of the tension screw 29 pass through the FRP top formwork 28 and the FRP bottom formwork 1 respectively and are connected to the nuts. The top supports 30 are installed at the two ends of the tension screw 29 corresponding to the nuts, and the support steel pipe 31 is arranged between the top support 30 and the FRP top formwork 28 and the FRP bottom formwork 1. By setting the support steel pipe 31 with a circular cross section, it can adapt to the curved surface shape of the FRP top formwork 28 and the FRP bottom formwork 1, facilitate support, and reduce the damage to the FRP top formwork 28 and the FRP bottom formwork 1 caused by stress concentration during support.

[0043] like Figure 8 As shown, a construction process of an FRP free-form surface concrete structure formwork system adopts the concrete structure formwork system as described above. During construction, a support structure 2 is first erected, and the bottom of the vertical support rod 5 is supported by an adjustable bottom bracket 6 and directly supported on the ground; during construction and erection, the ground is first measured and laid out, and then the support structure 2 is spliced ​​layer by layer from bottom to top until it is completed; then the bottom plates are laid one by one on the completed support structure 2, and the back corrugated plates 4 of two adjacent bottom plates are connected by connecting pieces; then the back corrugated plates 4 are supported on the support structure 2, thereby completing the erection of the FRP bottom formwork 1; after the splicing is completed, the concrete is tied layer by layer on the upper part of the FRP bottom formwork 1 Structural steel bars; After all the concrete structural steel bars are laid, the FRP top formwork 28 is laid on the concrete structural steel bars, and the top plates of adjacent FRP top formworks 28 are fastened and connected by bolts 16; then the tension screw 29 system is constructed through the holes reserved on the FRP bottom formwork 1 and the FRP top formwork 28; the completed system is measured again, the composite accuracy is corrected, and the concrete structure can be poured after meeting the requirements; the concrete is poured through the construction joints of the sections during the structural construction stage, or the concrete pouring holes reserved on the FRP top formwork 28; after the pouring is completed, the concrete structure is cured, and the FRP curved formwork system is removed after reaching the demoulding strength.

[0044] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A FRP free-form surface concrete structure formwork system, characterized by: The invention comprises an FRP bottom template and a supporting structure for supporting the same, wherein the FRP bottom template is formed by splicing a plurality of bottom plates in sequence, wherein the bottom plate comprises an FRP curved panel and a back corrugated plate fixed on the back side of the FRP curved panel, wherein the back corrugated plate is made of steel material, extends along the length direction of the FRP curved panel, and a portion of the back corrugated plate is formed in the FRP curved panel, and the back corrugated plates of two adjacent bottom plates are connected by a connecting piece; the supporting structure comprises a plurality of vertical support rods, an adjustable bottom bracket installed at the bottom of the vertical support rods, and a horizontal stabilizing rod connected to the vertical support rods; both ends of the back corrugated plate are connected to the vertical support rods, and the adjustable bottom bracket is used to adjust the supporting height of the vertical support rods, and the curvature of the FRP curved panel can be adjusted by adjusting the height difference of the vertical support rods at both ends of the back corrugated plate; the FRP The cam is an assembly made of a plurality of sliding members, each of which is adapted to move along a cam face, and the plurality of sliding members are adapted to move along a cam face.

2. The FRP free-form surface concrete structure formwork system according to claim 1, characterized in that: The abutment structure includes a first semicircular tube, a second semicircular tube, a positioning tube, a limiting seat and a screw. The first semicircular tube is fixed at the root of the opening groove of the first support plate, and the second semicircular tube is fixed at the root of the opening groove of the second support plate. The first semicircular tube and the second semicircular tube are combined to form a mounting hole. The positioning tube is limited by the limiting seat after passing through the mounting hole. The screw is threadedly connected to the positioning tube, and the outer end of the screw abuts against the back side of the FRP curved panel.

3. The FRP free-form surface concrete structure formwork system according to claim 2, characterized in that: Circular holes for making way for the locking piece are provided at both ends of the slide groove, and notches for making way for the first semicircular tube or the second semicircular tube are provided on the slide groove adjacent to the circular holes.

4. The FRP free-form surface concrete structure formwork system according to claim 1, characterized in that: The vertical support rod is provided with a vertical guide groove, a guide rod is slidably arranged in the vertical guide groove, and a guide hole is provided on the horizontal stabilizing rod. The guide rod passes through the vertical guide groove and the guide rod at the same time, and then the vertical support rod and the horizontal stabilizing rod are connected by a locking nut.

5. The FRP free-form surface concrete structure formwork system according to any one of claims 1 to 4, characterized in that: An FRP top formwork is installed on the upper side of the FRP bottom formwork, and a tension screw system is connected between the FRP top formwork and the FRP bottom formwork.

6. The FRP free-form surface concrete structure formwork system according to claim 5, characterized in that: The tension screw system includes tension screws, top supports, supporting steel pipes and tension nuts. The two ends of the tension screws pass through the FRP top formwork and the FRP bottom formwork respectively and are connected to the tension nuts. Top supports are installed at the two ends of the tension screws corresponding to the tension nuts. Support steel pipes are arranged between the top supports and the FRP top formwork and the FRP bottom formwork.

7. A construction process of a FRP free-form surface concrete structure formwork system, characterized in that: The concrete structure formwork system as claimed in claim 5 or 6 is adopted. During construction, the support structure is firstly set up, and the bottom of the vertical support rod is supported by an adjustable bottom bracket and directly supported on the ground; during construction and setting up, the ground is first measured and laid out, and then the support structure is spliced ​​layer by layer from bottom to top until it is completed; then the bottom plates are laid one by one on the completed support structure, and the back corrugated plates of two adjacent bottom plates are connected by connecting pieces; then the back corrugated plates are supported on the support structure, thereby completing the erection of the FRP bottom formwork; After the splicing is completed, the concrete structural steel bars are tied layer by layer on the upper part of the FRP bottom formwork; after all the concrete structural steel bars are laid, the FRP top formwork is laid on the concrete structural steel bars, and the top plates of the adjacent FRP top formworks are fastened and connected by bolts; then the tension screw system is constructed through the holes reserved on the FRP bottom formwork and the FRP top formwork; the completed system is measured again, the composite accuracy is corrected, and the concrete structure can be poured after meeting the requirements; the concrete is poured through the construction joints of the sections in the structural construction stage, or the concrete pouring holes reserved on the FRP top formwork; after the pouring is completed, the concrete structure is cured, and the FRP curved formwork system is removed after reaching the demoulding strength.

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