Arc-shaped beam formwork construction tool and arc-shaped beam construction method

Abstract

The present application relates to the field of arc-shaped beam formwork erection and installation, and discloses an arc-shaped beam formwork construction tool and a construction method of the arc-shaped beam. The tool comprises a bottom formwork and a top formwork, a plurality of standard formworks fixed between the top formwork and the bottom formwork, a rotating insertion rod assembly for connecting two adjacent standard formworks, a steel wire rope assembly connected to all the standard formworks on the same side of the arc-shaped beam, and a tension bolt assembly connecting the side formworks on both sides of the arc-shaped beam in the thickness direction. The arc-shaped beam formwork of various sizes and various radii is assembled and spliced by the standard formworks, the rotating insertion rod assembly and the steel wire rope assembly, which has the characteristics of convenience, small size, easy installation, reduced material cost and high practicability. In addition, the device is convenient to assemble, can ensure the visual integrity of the arc-shaped beam during construction, improves the construction quality, and has low technical requirements for the workers.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of circular arc modeling beam formwork erection installation construction, in particular to an arc-shaped beam formwork construction tool and a construction method of an arc-shaped beam. BACKGROUND

[0002] In modern architectural design, more and more flexible and variable special-shaped designs are adopted, and circular arc structures are widely used in various buildings. The existing circular arc beam formwork reinforcement system mostly adopts a wooden form method. The existing circular arc beam formwork is generally a flat wooden clapboard. It is difficult to use the flat wooden clapboard in the construction of circular arc beam formwork. In practical applications, the flat wooden clapboard is usually cut into small pieces, and then the small pieces of wooden clapboard are nailed together to form a whole near-circular formwork system. This method is the most commonly used, but it is easy to waste materials and increase construction costs.

[0003] In addition, there is also a construction method of using specially made circular arc formwork for circular arc beam formwork. In this method, the specially made formwork is placed and made in the factory according to the construction drawings. These specially made arc-shaped formworks are generally wooden formworks, and there are also steel formworks. Since the radii of the circular arc beams in the project are not consistent, the cost of specially making formworks of various radii is very high, and the processing speed of the factory is difficult to keep up with the progress of the construction, thereby affecting the progress of the entire construction and increasing the construction cost. SUMMARY

[0004] In view of the above defects of the prior art, an arc-shaped beam formwork construction tool and a construction method of an arc-shaped beam are provided. The arc-shaped beam formwork construction tool can be applied to arc-shaped beams of various radii, and can avoid the situation that the use of wooden formwork for circular arc beam formwork requires cutting into small pieces, assembling small sizes, and causing waste and being unable to be reused, thereby achieving the purpose of repeated use.

[0005] The technical solution adopted by the present application to solve the above technical problems is:

[0006] The arc-shaped beam formwork construction tool is characterized in that it comprises a bottom formwork and a top formwork, a plurality of standard formworks fixed between the top formwork and the bottom formwork, a rotating plug assembly for connecting two adjacent standard formworks, a steel wire rope assembly connected in series on all the standard formworks on the same side surface of the arc-shaped beam, and a pair of pull bolts for connecting the side formworks on both sides of the thickness direction of the arc-shaped beam; the rotating plug assembly is connected by two connecting shafts hinged at the end portions, and the two connecting shafts are fixed on the adjacent two standard formworks; the fixed positions of the connecting shafts on the standard formworks are adjusted according to the required arc of the side formwork of the arc-shaped beam, so as to adjust the included angle between the long sides of the adjacent two standard formworks, thereby forming the required side formwork of the arc-shaped beam; the steel wire rope assembly is provided with a fixed point on the plane of the short side of the side formwork on both sides of the arc-shaped beam, and the steel wire rope assembly and the pair of pull bolts are located on the same horizontal plane.

[0007] According to the above technical solution, the cross section of the standard formwork is isosceles trapezoidal structure, the thickness range is 10mm-30mm, the long side length is 100mm-300mm, and the short side length is 0.7-0.9 times of the long side length; the height of the standard formwork is 300mm-600mm.

[0008] According to the above technical solution, the rotating plug assembly further comprises a connecting plate, a rotating shaft and a fastening nut, the connecting shaft adopts a screw rod structure, one end of the screw rod is pressed into a lap flange, a circular hole is arranged in the middle of the lap flange, the lap flanges of the two connecting shafts are matched, and the two connecting shafts are hinged and connected through the rotating shaft passing through the circular hole; the connecting plate is fixed on the left and right sides of the plane of the short side of the standard formwork, at least four connecting plates are arranged, and a plug rod groove is arranged on each connecting plate; the plug rod groove is a U-shaped opening slot structure, which is divided into a vertical slot and an arc-shaped slot at the bottom of the vertical slot, and the size of the arc-shaped slot matches the size of the connecting shaft; the two connecting shafts of the rotating plug assembly are respectively arranged in the plug rod grooves at the same height of the adjacent two standard formworks, and the fastening nuts are respectively arranged at the two ends of the connecting shaft in the plug rod groove, so that the connecting shaft is fixed in the plug rod groove through the fastening nuts on both sides.

[0009] According to the above technical solution, the steel wire rope assembly comprises a steel wire rope, a limiting bolt and a limiting plate, the limiting plate is fixed on the left and right sides of the plane of the short side of the standard formwork, at least two limiting plates are arranged, and a limiting hole matching the cross-sectional size of the steel wire rope is arranged on the limiting plate; the outer diameter of the limiting bolt is larger than the outer diameter of the steel wire rope, a U-shaped notch is arranged on the screw rod of the limiting bolt, and the size of the U-shaped notch matches the cross-sectional size of the steel wire rope; the steel wire rope is sequentially arranged in the limiting holes at the same height on the same side surface of the arc-shaped beam, and the limiting bolt is arranged on the steel wire rope on both sides of each limiting hole; the steel wire rope is arranged in the U-shaped notch of the limiting bolt, and the nut of the limiting bolt is tightened, so that the limiting bolt is fixed on the steel wire rope.

[0010] According to the technical scheme, the bolt assembly comprises a bolt hole arranged in the middle of the standard template, a bolt rod penetrating through the two side surfaces of the arc-shaped beam and facing the bolt hole of the standard template, a W-shaped pressing plate sleeved on the bolt rod located at the two sides of the standard template, two steel pipes arranged vertically, and a locking nut; the size of the two grooves of the W-shaped pressing plate matches the size of the steel pipes, the steel wire rope assembly is located between the standard template and the steel pipes, and the locking nut is screwed into the bolt rod from the outside of the W-shaped pressing plate, so as to realize the fastening of the steel pipes and the steel wire rope.

[0011] According to the technical scheme, one or more pin hole plates are arranged at the bottom and the top of the standard template, the pin hole plates are provided with pin holes, the pin holes are located on the plane where the short edges of the standard template are located, and the pin holes at the top and the pin holes at the bottom are located on the same vertical plane; the assembly further comprises a plug plate matched with the pin holes, the plug plate penetrates through the two adjacent pin holes at the top and the bottom when multiple standard templates need to be arranged; and the assembly further comprises iron nails, the iron nails are fixed on the bottom template through the bottom pin hole or fixed on the top template through the top pin hole.

[0012] According to the technical scheme, the fixing points of the rotating plug rod assembly, the steel wire rope assembly, and the pin hole plate are distributed on the two sides of the plane where the short edges of the standard template are located, and the fixing points located on the left side or the right side are located on the same vertical plane.

[0013] According to the technical scheme, T-shaped sliding grooves are arranged on the top surface and the bottom surface of the standard template; the assembly further comprises a H-shaped rubber strip, the width of the horizontal section of one side of the H-shaped rubber strip is consistent with the thickness of the standard template, and the horizontal section and the vertical section of the other side of the H-shaped rubber strip are consistent with the shape of the T-shaped sliding grooves of the standard template.

[0014] A construction method for manufacturing an arc-shaped beam, characterized in that the method comprises the following steps:

[0015] S1: referring to design drawings, drawing arc-shaped beam edge lines on a bottom template;

[0016] S2: installing the bottom template at a preset position, and gradually installing standard templates according to the arc-shaped beam edge lines;

[0017] S3: installing a rotating plug rod assembly between two adjacent standard templates;

[0018] S4: selecting corresponding steel wire rope assemblies, and sequentially connecting all the standard templates on one side of the arc-shaped beam through fixed connection;

[0019] S5: fixedly installing a top template at the top of the standard template.

[0020] According to the technical scheme, in step S2, the number of layers of the standard template is one, two or more, and the height of the standard template ranges from 300mm to 600mm; the height and the number of layers of the standard template are selected according to the height of the arc-shaped beam.

[0021] The present application has the following advantages:

[0022] In order to be suitable for arc-shaped beams of various sizes, in the embodiment, a standard template is designed, and the cross section of the standard template is in a trapezoidal structure, wherein the side face of the trapezoidal long side serves as a template face of the arc-shaped beam. In actual construction, first, a bottom template is placed according to a design drawing, and the BIM technology (i.e., the building information modeling technology) is used to mark the edge line positions of the front side face and the rear side face of the arc-shaped beam on the bottom template. According to the edge lines marked on the bottom template, the standard template is installed on the bottom template, so that the projection of the plane where the long side of the bottom template is located on the bottom template coincides with the edge lines. Secondly, a rotating plug rod assembly is installed on each two adjacent standard templates, so as to increase the connection firmness of the two adjacent standard templates, thereby connecting the standard templates located on the same side of the arc-shaped beam into a whole. Subsequently, a steel wire rope assembly fixing point is arranged on the plane where the short side of the side template of the arc-shaped beam is located. Since the length of the steel wire rope between the two adjacent fixing points is constant, the connection firmness of the two adjacent standard templates is further increased. Finally, a tension bolt assembly is arranged between the two arc-shaped faces of the arc-shaped beam, which cooperates with the rotating plug rod assembly and the steel wire rope assembly to increase the structural strength and stability of the arc-shaped beam template composed of the bottom template, the side template and the standard template. The device can be suitable for arc-shaped beams of various arc shapes, and can avoid the situation that the wood template needs to be cut into small pieces, assembled with small sizes, wasted and unable to be used again, thereby achieving the purpose of repeated use.

[0023] Based on the above measures, various sizes and various arc-shaped arc-shaped beam templates are assembled and spliced through the standard templates, the rotating plug rod assemblies and the steel wire rope assemblies connecting the standard templates, which has the characteristics of convenience, small size, easy installation, reduced material cost and strong practicability. In addition, the device has the characteristics of convenient assembly, good visual sense of the arc-shaped beam construction, improved construction quality and small technical requirements for the workers. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic diagram of an embodiment provided by the present application;

[0025] Figure 2 is a front view of a standard template of an embodiment provided by the present application;

[0026] Figure 3 is a side view of a standard template of an embodiment provided by the present application;

[0027] Figure 4 is a top view of a standard template provided by the present application to provide an embodiment;

[0028] Figure 5 is a connection relationship diagram of two adjacent standard templates provided by the present application to provide an embodiment;

[0029] Figure 6 is a structural schematic diagram of two connecting shafts of a rotating insertion rod assembly provided by the present application to provide an embodiment;

[0030] Figure 7 is a structural schematic diagram of an insertion plate provided by the present application to provide an embodiment;

[0031] Figure 8 is a structural schematic diagram of a limiting bolt provided by the present application to provide an embodiment;

[0032] Figure 9 is a structural schematic diagram of an I-shaped rubber strip provided by the present application to provide an embodiment;

[0033] In the figure, 1 is a bottom template, 2 is a top template, 3 is a standard template, 4 is a rotating insertion rod assembly, 4-1 is a connecting shaft, 4-2 is a connecting plate, 4-3 is a rotating shaft, 4-4 is a fastening nut, 4-5 is an insertion rod groove, 5 is a wire rope assembly, 5-1 is a steel wire rope, 5-2 is a limiting bolt, 5-3 is a limiting plate, 5-4 is a limiting hole, 6 is a pulling bolt assembly, 6-1 is a pulling hole, 6-2 is two steel pipes, 7 is a bolt hole plate, 7-1 is a bolt hole, 8 is an insertion plate, 9 is a T-shaped sliding groove, 10 is an I-shaped rubber strip, and 11 is a wooden frame. DETAILED DESCRIPTION

[0034] The present application will be described in detail below in combination with the drawings and embodiments.

[0035] Referring to Figures 1-9 the figure, the present application provides an arc-shaped beam template construction tool.

[0036] Embodiment 1

[0037] The device comprises a bottom template 1 and a top template 2, a plurality of standard templates 3 fixed between the top template and the bottom template, a rotating plug assembly 4 for connecting two adjacent standard templates, a steel wire rope assembly 5 connected to all the standard templates on the same side of the arc-shaped beam, and a tension bolt assembly 6 connecting the side templates on both sides of the thickness direction of the arc-shaped beam. The rotating plug assembly is connected by two connecting shafts 4-1 hinged at the ends, and the two connecting shafts are fixed on the adjacent two standard templates. According to the required arc of the side template of the arc-shaped beam, the fixed position of the connecting shaft on the standard template is adjusted to adjust the included angle between the long sides of the adjacent two standard templates, thereby forming the required side template of the arc-shaped beam. The steel wire rope assembly is fixed on the plane of the short side of the side template of the arc-shaped beam, and the steel wire rope assembly and the tension bolt assembly are located on the same horizontal plane.

[0038] The bottom surface and the top surface of the arc-shaped beam are both planes, and the front side and the rear side are arc surfaces. The template of the arc-shaped beam is a bottom template arranged horizontally, a side template arranged vertically above the bottom template, and a top template arranged horizontally on the top of the side template. The top template also serves as a floor template. The top template is located on the top of the side template and extends outward. The template of the entire arc-shaped beam presents an inverted “π” structure.

[0039] In order to be suitable for arc-shaped beams of various sizes, a standard template is designed in this embodiment. The cross section of the standard template is a trapezoidal structure, and the side of the trapezoidal long side serves as the template surface of the arc-shaped beam. In actual construction, the bottom template is placed according to the design drawing, and the BIM technology (Building Information Modeling technology) is used to mark the edge line positions of the front side and the rear side of the arc-shaped beam on the bottom template. According to the edge line marked on the bottom template, the standard template is installed on the bottom template, so that the projection of the plane of the long side of the bottom template on the bottom template coincides with the edge line. Then, the rotating plug assembly is installed on each two adjacent standard templates to increase the connection firmness of the adjacent two standard templates, thereby connecting the standard templates on the same side of the arc-shaped beam into a whole. Subsequently, the steel wire rope assembly fixing points are arranged on the plane of the short side of the side template of the arc-shaped beam. Since the length of the steel wire rope between the two adjacent fixing points is constant, the connection firmness of the adjacent two standard templates is further increased. Finally, the tension bolt assembly is arranged between the two arc surfaces of the arc-shaped beam to increase the structural strength and stability of the arc-shaped beam template composed of the bottom template, the side template, and the standard template. The device can be suitable for arc-shaped beams of various arc shapes, and can avoid the situation that the wood template needs to be cut into small pieces, assembled with small size, wasted and cannot be used again, thereby achieving the purpose of repeated use.

[0040] Based on the above measures, various sizes and various radii of the arc-shaped beam template are assembled by a standard template, a rotating plug rod assembly and a steel wire rope assembly connected with the standard template, which has the characteristics of convenient and small size, easy installation, reduced material cost and strong practicability. In addition, the device has a convenient assembly mode, which can ensure the visual integrity of the arc-shaped beam during construction, improve the construction quality, and has small technical requirements for the workers.

[0041] Embodiment 2

[0042] The structure and principle of embodiment 2 are close to those of embodiment 1, and the difference lies in that a preferred structure of the standard template is given.

[0043] Specifically, the cross section of the standard template is isosceles trapezoidal structure, the thickness range is 10mm~30mm, the long side length value range is 100mm~300mm, and the short side length is 0.7~0.9 of the long side length; the height value range of the standard template is 300mm~600mm. In the figure, the long side length is 200mm, the short side length is 170mm, and the height is 300mm. A plurality of small size standard templates are used to form the side template of the arc-shaped beam in the structure similar to "bamboo slips". In addition, the standard template is composed of 3mm thick aluminum plate and 14mm thick wood template to form 20mm thick aluminum wood trapezoidal plate.

[0044] Embodiment 3

[0045] The structure and principle of embodiment 3 are close to those of embodiment 1, and the difference lies in that a preferred structure of the rotating plug assembly is given.

[0046] Specifically, the rotating plug assembly further includes a connecting plate 4-2, a rotating shaft 4-3 and a fastening nut 4-4. The connecting shaft adopts a screw rod structure, one end of the screw rod is pressed into a lapping flat mouth, a circular hole is arranged in the middle of the lapping flat mouth, the lapping flat mouths of the two connecting shafts are matched, and the two connecting shafts are hinged and connected through the rotating shaft passing through the circular hole. The connecting plate is fixedly arranged on the left and right sides of the plane where the short side of the standard template is located, at least four connecting plates are arranged, and a plug rod groove 4-5 is arranged on each connecting plate. The plug rod groove is a U-shaped open slot structure, which is divided into a vertical slot and an arc-shaped slot at the bottom of the vertical slot, and the size of the arc-shaped slot matches the size of the connecting shaft. The two connecting shafts of the rotating plug assembly are respectively arranged in the plug rod grooves at the same height of the adjacent two standard templates, and the fastening nuts are respectively arranged at the two ends of the connecting shaft in the plug rod groove, so that the connecting shaft is fixed in the plug rod groove through the fastening nuts on both sides.

[0047] In the embodiment, the end of the connecting shaft is provided with a lap flange, a rotating plane is formed between the connecting shafts composed of lead screws by the lap flange; and the rotating shaft passes through the circular hole in the lap flange, so that the two connecting rods are hinged. The plug-in rod groove is provided in a U-shaped structure, the vertical groove facilitates the placement of the connecting shaft, and the arc-shaped groove at the bottom limits the connecting shaft, so that the connecting shaft can only move axially and rotate in the plug-in rod groove, and the axial movement of the limiting of the fastening nut and the rotation of the other connecting shaft are limited, so as to fix the connecting shaft on the standard template.

[0048] Embodiment 4

[0049] The structure and principle of embodiment 4 are close to those of embodiment 1, and the difference lies in that a preferred structure of the steel wire rope assembly is given.

[0050] Specifically, the steel wire rope assembly comprises a steel wire rope 5-1, a limiting bolt 5-2, and a limiting plate 5-3, the limiting plate is fixedly arranged on the left and right sides of the plane where the short side of the standard template is located, at least two limiting plates are arranged, limiting holes 5-4 matching the cross-sectional size of the steel wire rope are arranged on the limiting plates; the outer diameter of the limiting bolt is larger than the outer diameter of the steel wire rope, a U-shaped notch is arranged on the screw rod of the limiting bolt, and the size of the U-shaped notch matches the cross-sectional size of the steel wire rope; the steel wire rope passes through the limiting holes at the same height on the same side face of the arc-shaped beam in sequence, and the limiting bolt is arranged on the steel wire rope on both sides of each limiting hole; the steel wire rope is arranged in the U-shaped notch of the limiting bolt, and the nut of the limiting bolt is tightened, so as to fix the limiting bolt on the steel wire rope.

[0051] In the embodiment, the limiting plate with limiting holes is arranged on the standard template on the same side face of the arc-shaped beam, and the standard templates are connected into a whole through the steel wire rope passing through the limiting holes; then the limiting bolt is fixedly arranged on the steel wire rope on both sides of the limiting hole, and the limiting bolt fixed on the steel wire rope is used to limit the movement of the steel wire rope in the limiting hole, so as to increase the connection firmness of the adjacent two standard templates.

[0052] Embodiment 5

[0053] The structure and principle of embodiment 5 are close to those of embodiment 4, and the difference lies in that a preferred specification of the steel wire rope is given. The steel wire rope adopts a 6*19a steel wire rope, that is, 6 strands, each strand is twisted by 19 steel wires, and the galvanized layer level is a. In the embodiment, the diameter of the steel wire rope is 16 mm, and the diameter of the limiting bolt is 20 mm.

[0054] Embodiment 6

[0055] The structure and principle of embodiment 6 are close to those of embodiment 1, and the difference lies in that a structure of the tension bolt assembly is given.

[0056] Specifically, the tensioning bolt assembly includes a tensioning hole 6-1 arranged in the middle of the standard template, a tensioning screw rod passing through both sides of the curved beam and facing the tensioning hole of the standard template, a W-shaped pressing plate sleeved on the tensioning screw rod located on both sides of the standard template, two vertically arranged steel pipes 6-2, and a locking nut; the size of the two grooves of the W-shaped pressing plate matches the size of the steel pipe, the steel wire rope assembly is located between the standard template and the steel pipe, and the locking nut is screwed into the tensioning screw rod from the outside of the W-shaped pressing plate, so as to realize the fastening of the steel pipe and the steel wire rope.

[0057] In the embodiment, the tensioning bolt assembly is not only used for fixing the templates on both sides of the curved beam to improve the strength of the templates, but also plays a further fixing role on the shape of the standard template on the side of the curved beam by pressing the steel wire rope assembly. In addition, one tensioning bolt assembly can be arranged on every two opposite standard templates of the curved beam, or the tensioning bolt assembly can be arranged after several standard templates are spaced apart.

[0058] Embodiment 7

[0059] The structure and principle of embodiment 7 are close to those of embodiment 1, and the difference lies in that one or more pin hole plates 7 are arranged at the bottom and top of the standard template in order to make the device applicable to the production of curved beams with higher and lower sizes, and to facilitate the fixation of the standard side template on the bottom template and the top template; the pin hole plate is provided with a pin hole 7-1, the pin hole is located on the plane where the short side of the standard template is located, and the pin hole at the top and the pin hole at the bottom are located on the same vertical plane; the device further includes a plug plate 8 matched with the pin hole, the plug plate passes through the upper and lower adjacent two pin holes when multiple standard templates are arranged; and the device further includes an iron nail fixed on the bottom template through the bottommost pin hole or fixed on the top template through the topmost pin hole.

[0060] In the embodiment, the standard template is fixedly connected with the top template and the bottom template by the iron nail passing through the pin hole, and the adjacent two standard templates are fixedly connected by the plug plate when multiple standard templates are arranged. In the embodiment, the pin is a trapezoidal pin with a long side width of 18 mm, a short side width of 10 mm, and a height of 60 mm.

[0061] Embodiment 8

[0062] The structure and principle of embodiment 8 are close to those of embodiments 1-7, and the difference lies in that the fixing points of the rotating plug rod assembly, the steel wire rope assembly, and the pin hole plate are distributed on both sides of the plane where the short side of the standard template is located, and the fixing points located on the left side or the right side are located on the same vertical plane.

[0063] Embodiment 9

[0064] The structure and principle of the embodiment 9 are close to those of the embodiment 1, and the difference lies in that T-shaped sliding grooves 9 are arranged on the top surface and the bottom surface of the standard template to ensure the sealing of the fixed connection between the standard template and the top template or the bottom template; and the embodiment further comprises a I-shaped rubber strip 10, the width of one side horizontal section of the I-shaped rubber strip is consistent with the thickness of the standard template, and the other side horizontal section and the vertical section of the I-shaped rubber strip are consistent with the shape of the T-shaped sliding grooves of the standard template. In the embodiment, the I-shaped rubber strip is fixed on the top and the base of the standard template by the T-shaped sliding grooves arranged on the top of the standard template, and the I-shaped rubber strip is located between the standard template and the top template and between the standard template and the bottom template, so that the sealing operation between the top template, the side template and the bottom template of the arc-shaped beam is realized.

[0065] The application further provides a construction method for manufacturing an arc-shaped beam.

[0066] Embodiment 1

[0067] comprises the following steps:

[0068] S1: referring to design drawings, drawing arc-shaped beam edge lines on the bottom template; specifically, first, the approximate specifications of the template used for the bottom of the arc-shaped beam are planned in advance by using BIM technology, the on-site arc-shaped beam is measured and laid out by referring to the drawings, the pre-assembly of the arc-shaped beam bottom template is performed on the ground according to the arc-shaped beam laying line, the arc-shaped beam bottom template is arranged, the arc-shaped beam edge line and the position 5 cm outside the edge line are drawn on the template, the arc-shaped beam bottom template is numbered, and cutting is performed along the position 50 mm outside the edge line.

[0069] S2: installing the bottom template at the preset position and gradually installing the standard template according to the arc-shaped beam edge line; specifically, first, the external inner support frame scaffold is erected, after the scaffold body is completely installed and stable, the steel pipe is laid horizontally on the top support, the external wooden frame 11 is laid along the longitudinal direction of the arc-shaped beam, the arc-shaped beam bottom template is assembled in sequence according to the number, and the bottom template is fixed on the scaffold wooden frame by using iron nails; then, the standard template is installed block by block according to the arc-shaped beam edge line on the bottom template, and the standard template is fixed on the arc-shaped beam bottom template by using iron nails through the bolt hole of the standard template; if multiple layers of standard templates are used, in addition to the bottom fixed by using iron nails, the upper and lower two layers of standard templates are fixed by using the trapezoidal bolt.

[0070] S3: installing the rotating bolt assembly between the adjacent two standard templates; the rotating bolt assembly is used to connect the adjacent two standard templates, the angle between the two connecting shafts that are hingedly connected in the rotating bolt assembly is adjusted, the end heads of the two connecting shafts are inserted into the bolt slot of the connecting plate, the bolt slot on both sides is reinforced by using nuts, the nuts are tightened, and the adjacent standard templates are fixed; the upper operation is sequentially performed, and the fixing of all the standard templates is gradually completed.

[0071] S4: select the corresponding steel wire rope assembly, in turn series fixed connection arc beam single side of all standard templates; Specifically, after the standard template is basically fixed, select the appropriate length, such as diameter 14mm, 6*19(a) steel wire rope through each standard template on the intermediate limiting plate on the limiting hole, manually tighten the steel wire rope, install 2 limiting bolts on the first and last ends of the steel wire rope, and tighten the nut. The position of the fixed steel wire rope is cut off the excess steel wire rope, and then according to the stress condition of the arc beam on site, install a limiting bolt on both sides of the limiting plate to strengthen the stability of the steel wire rope.

[0072] S5: the top template is fixedly installed on the top of the standard template. Specifically, after the side mold of the arc beam is basically fixed, the top template (i.e. floor template) is installed on the upper part of the arc beam. Wood frame is installed below the edge of the floor template (below the upper end of the uppermost standard template). The floor template and the arc beam side mold are fixed by iron nails.

[0073] Embodiment 2

[0074] On the basis of embodiment 1, the size and arrangement requirements of the standard template are clarified.

[0075] Specifically, in step S2, the number of layers of the standard template is one layer, two layers or multiple layers, and the height of the standard template is in the range of 300mm-600m; the height and layout number of the standard template are selected according to the height of the arc beam.

[0076] The above is only a preferred embodiment of the present application, and of course cannot limit the scope of the present application. Therefore, equivalent changes made within the scope of the patent application of the present application are still within the protection scope of the present application.

Claims

1. A tool for constructing formwork for curved beams, characterized in that: The system includes a bottom template and a top template, several standard templates fixed between the top template and the bottom template, a rotating pin assembly for connecting two adjacent standard templates, a wire rope assembly that connects all standard templates on the same side template plane of the curved beam, and a tie bolt assembly for connecting the side templates on both sides of the curved beam in the thickness direction. The rotating pin assembly consists of two connecting shafts hinged together at their ends. The two connecting shafts are fixed to two adjacent standard templates respectively. According to the curvature requirements of the side templates required for the curved beam, the fixed position of the connecting shafts on the standard templates is adjusted to adjust the included angle between the sides of the long sides of the two adjacent standard templates, thereby forming the side templates required for the curved beam. Wire rope assembly fixing points are provided on the planes of the short sides of the side templates on both sides of the curved beam. The wire rope assembly and the tie bolt assembly are located on the same horizontal plane. The rotating pin assembly also includes a connecting plate, a rotating shaft, and fastening nuts. The connecting shaft adopts a screw structure, with one end of the screw pressed into an overlapping flat opening. A circular hole is provided in the middle of the overlapping flat opening. The overlapping flat openings of two connecting shafts fit together, and the two connecting shafts are hinged together by passing the rotating shaft through the circular hole. The connecting plates are fixed on the left and right sides of the plane containing the short side of the standard template. At least four connecting plates are provided, and each connecting plate has a rod slot. The rod slot has a U-shaped opening structure, divided into a vertical slot and an arc-shaped slot located at the bottom of the vertical slot. The size of the arc-shaped slot matches the size of the connecting shaft. The two connecting shafts of the rotating pin assembly are respectively placed in the rod slots at the same height of two adjacent standard templates. Fastening nuts are respectively fitted at both ends of the connecting shaft located in the rod slot, and the connecting shaft is fixed in the rod slot by the fastening nuts on both sides. The wire rope assembly includes a wire rope, limiting bolts, and limiting plates. The limiting plates are fixed on the left and right sides of the plane containing the short side of the standard template, with at least two limiting plates. Each limiting plate has a limiting hole that matches the cross-sectional dimensions of the wire rope. The outer diameter of the limiting bolt is larger than the outer diameter of the wire rope, and the thread of the limiting bolt has a U-shaped notch whose size matches the cross-sectional dimensions of the wire rope. The wire rope passes sequentially through the limiting holes at the same height on the same side of the curved beam, and limiting bolts are placed on the wire rope on both sides of each limiting hole. The wire rope is placed in the U-shaped notch of the limiting bolt, and the nut of the limiting bolt is tightened, thereby fixing the limiting bolt to the wire rope.

2. The arc-shaped beam formwork construction tool according to claim 1, characterized in that: The standard template has an isosceles trapezoidal cross-section with a thickness ranging from 10mm to 30mm, a long side length ranging from 100mm to 300mm, and a short side length of 0.7 to 0.9 times the long side length; the standard template has a height ranging from 300mm to 600mm.

3. The arc-shaped beam formwork construction tool according to claim 1, characterized in that: The tie bolt assembly includes tie holes in the middle of the standard template, tie rods passing through the tie holes on both sides of the curved beam and facing the standard template, W-shaped pressure plates fitted on both sides of the tie rods on the standard template, two vertically arranged steel pipes, and locking nuts. The dimensions of the two grooves of the W-shaped pressure plates match the dimensions of the steel pipes. The wire rope assembly is located between the standard template and the steel pipes. The outer side of the W-shaped pressure plate is screwed into the tie rods by locking nuts, thereby achieving the fastening of the steel pipes and wire ropes.

4. The arc-shaped beam formwork construction tool according to claim 1, characterized in that: One or more pin hole plates are provided at the bottom and top of the standard template. The pin hole plates are provided with pin holes located on the plane of the short side of the standard template, and the pin holes at the top and bottom are on the same vertical plane. The template also includes insert plates that match the pin holes. When multiple layers of standard templates are required, the insert plates pass through two adjacent pin holes. The template also includes nails that pass through the bottommost pin hole to fix it to the bottom template or through the topmost pin hole to fix it to the top template.

5. The arc-shaped beam formwork construction tool according to any one of claims 1-4, characterized in that: The fixing points of the rotating rod assembly, the wire rope assembly, and the pin hole plate are distributed on both sides of the plane where the short side of the standard template is located, and the fixing points on the left or right side are on the same vertical plane.

6. The arc-shaped beam formwork construction tool according to claim 1, characterized in that: The standard template has T-shaped grooves on both the top and bottom surfaces; it also includes an I-shaped rubber strip, the width of the horizontal section on one side of the I-shaped rubber strip is the same as the thickness of the standard template, and the horizontal and vertical sections on the other side of the I-shaped rubber strip are the same as the shape of the T-shaped grooves of the standard template.

7. A construction method for an arc-shaped beam, characterized in that: The construction tool for the beam formwork as described in any one of claims 1-6 is used, and includes the following steps: S1: Referring to the design drawings, mark the edge line of the curved beam on the bottom template; S2: Install the bottom formwork in the preset position, and gradually install the standard formwork according to the edge line of the curved beam; S3: Install a rotating insert assembly between two adjacent annotation templates; S4: Select appropriate wire rope components and connect all standard templates on one side of the curved beam in series. S5: Fix the top template on top of the standard template.

8. The construction method for the arc-shaped beam according to claim 7, characterized in that: In step S2, the standard template has one, two, or more layers, and the height of the standard template ranges from 300mm to 600mm. The height and number of layers of the standard template are selected according to the height of the curved beam.

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