Formwork erecting assembly and formwork erecting method

Abstract

The formwork erecting assembly comprises an internal corner formwork and a plane formwork, the internal corner formwork comprises a right-angle plate, the upper portion and the lower portion of the right-angle plate are each fixedly provided with a right-angle supporting plate, and the back face of the right-angle plate is provided with a plurality of right-angle connecting pieces; the plane formwork comprises a plane plate, two first connecting pieces which are symmetrically distributed left and right are fixedly arranged on the upper portion of the back face of the plane plate, a first transverse secondary back ridge is fixedly arranged between the two first connecting pieces, a plurality of right-angle connecting pieces are arranged on the back face of the plane plate, and first through holes for pins to penetrate through are formed in the right-angle connecting pieces. The first connecting piece is provided with two second through holes for the pins to penetrate through. When the internal corner formwork and the plane formwork are used for formwork erecting, combination and splicing are convenient, the weight is light, mounting, dismounting and transferring are facilitated, the formwork erecting labor intensity is reduced, and meanwhile the formwork erecting construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building components, and in particular to a formwork assembly and a formwork method. Background Art

[0002] In existing construction sites, for building components with some specific structures, the concrete pouring process is generally used for construction. When pouring concrete, formwork work needs to be carried out. At present, in the field of building formwork, wooden formwork or aluminum formwork is generally used for formwork. Existing wooden formwork is generally a smooth board. When using wooden formwork for formwork, a large number of square timbers are generally needed for support and positioning. It is difficult to accurately position and support the joint of the boards, resulting in pouring deformation at the joint, thus resulting in poor forming effect of the poured structure; the aluminum formwork has high structural strength and does not have the problem of being easily deformed. At the same time, it is convenient for support and positioning. However, its processing cost is high, and a large amount of aluminum formwork requires a large amount of capital investment. Summary of the Invention

[0003] The purpose of the present invention is to provide a formwork assembly and a formwork method. The first longitudinal secondary backing can be conveniently buckled outside the joint or on the edge side of the formwork. With the support of the first longitudinal secondary backing, it is convenient to carry out subsequent formwork support and positioning, and then it is beneficial to improve the formwork efficiency; the first longitudinal secondary backing has high structural strength, which is beneficial to improving the assembly strength of the formwork, thus ensuring the forming effect of the poured structure.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a formwork assembly, including an internal corner formwork and a flat formwork. The internal corner formwork includes a right-angle plate, and right-angle support plates are fixedly arranged on the upper and lower parts of the right-angle plate respectively. A number of right-angle connectors adjacent to the front side wall and the right side wall of the right-angle plate are arranged on the back of the right-angle plate; the flat formwork includes a flat plate, two first connectors are fixedly arranged on the upper part of the back of the flat plate, a first transverse secondary backing is fixedly arranged between the two first connectors, a number of the right-angle connectors adjacent to the left side wall and the right side wall of the flat plate are arranged on the back of the flat plate, a first through hole for penetrating a pin is arranged on the right-angle connector, and two second through holes for penetrating a pin are arranged on the first connector, and the two second through holes are distributed vertically.

[0005] Preferably, the first connector includes a first right-angle steel plate and a second right-angle steel plate. The first right-angle steel plate is fixedly arranged on the back of the flat plate, and the two second through holes are arranged on the side plate perpendicular to the flat plate of the first right-angle steel plate. The second right-angle steel plate is fixedly arranged on the upper part of the first right-angle steel plate, and the opening of the second right-angle steel plate faces the back of the flat plate.

[0006] Further, a plurality of first semi-circular grooves are provided on the front side wall and the right side wall of the right-angled plate, and second semi-circular grooves corresponding to the first semi-circular grooves are provided on the left side wall and the right side wall of the flat plate.

[0007] Further, both the first through hole and the second through hole are vertically distributed oblong holes.

[0008] Further, the formwork support assembly further includes a first longitudinal secondary backing rib, and a plurality of third through holes and fourth through holes are provided on the first longitudinal secondary backing rib. The third through hole is used for passing through a dowel pin, and the fourth through hole is used for passing through a wall-through tie rod. The third through hole and the fourth through hole are perpendicularly distributed to each other.

[0009] A formwork support method includes the above formwork support assembly, and the formwork support method includes the following steps: S1. Erect the formwork for the inner corner surface of the casting cavity; install and fix the inner corner formwork at the designated position, and then sequentially assemble and fix a plurality of the flat formworks along both sides of the inner corner formwork until the erection and fixation of the formwork for the inner corner surface of the casting cavity are completed; S2. Pass the wall-through tie rod; after the first semi-circular groove and the second semi-circular groove are combined, they form a first circular hole, and after two second semi-circular grooves are combined, they form a second circular hole. Install a wall-through tie rod corresponding to the first circular hole and the second circular hole in the casting cavity, and one end of the wall-through tie rod passes through the first circular hole or the second circular hole; S3. Erect the formwork for the outer corner surface of the casting cavity; butt and assemble and fix two flat formworks on both sides of the outer corner of the casting cavity. After the two flat formworks are assembled and fixed, sequentially assemble and fix a plurality of flat formworks along the outer sides of the two flat formworks until the erection and fixation of the formwork for the outer corner surface of the casting cavity are completed. When erecting the flat formwork, ensure that the other end of the wall-through tie rod passes through the second circular hole formed after the combination of two second semi-circular grooves; S4. Erect the formwork for the front outer extension surface and the right outer extension surface of the casting cavity; respectively install and fix one flat formwork on the outer sides of the front outer extension surface and the right outer extension surface of the casting cavity; S5. Install the first longitudinal secondary backing rib; install a first longitudinal secondary backing rib on the outer side of the joint between the inner corner formwork and the flat formwork, install a first longitudinal secondary backing rib on the outer side of the joint between two juxtaposed flat formworks. The first longitudinal secondary backing rib located on the outer side of the joint is synchronously passed through the wall-through tie rod. Set a first longitudinal secondary backing rib on the side edge of the flat formwork at the outer corner of the casting cavity, and use the combination of a dowel pin and a washer to realize the installation and fixation of the first longitudinal secondary backing rib; S6. Install the first horizontal main back ribs; penetrate and install several first horizontal main back ribs at the outer ends of the row of wall-piercing tie bolts at the same horizontal height, and use pin plates to fix and connect the adjacent first horizontal main back ribs. Then, use the wall-piercing tie bolts to relatively tighten and fix the first horizontal main back ribs at both ends thereof. S7. Reinforce the front outstretched surface pouring formwork and the right outstretched surface pouring formwork; several first horizontal main back ribs connected to each other at the same horizontal height form a main back rib reinforcement member. Use a single straight plate and a pin plate to fix and connect the ends of two main back rib reinforcement members at the same horizontal height, and the single straight plate presses against two first longitudinal secondary back ribs erected outside the plane formwork. Furthermore, the formwork assembly further includes a corner fastener. By using the corner fastener, pins and pin plates, the reinforcement connection of two first longitudinal secondary back ribs at the corner of the pouring cavity can be realized. In the above step S5, after all the first longitudinal secondary back ribs are installed and fixed by using pins and pin plates, again, use the corner fastener, pins and pin plates to realize the reinforcement connection of two first longitudinal secondary back ribs at the corner of the pouring cavity.

[0010] Furthermore, in the above step S6, before installing the first horizontal main back ribs, at least one first longitudinal secondary back rib is erected and installed in the middle of the back surface of several said plane plates according to the reinforcement requirements.

[0011] The beneficial effects of the present invention are as follows: The internal corner formwork and the plane formwork in the present invention are easy to process and manufacture, can be produced in a standardized manner in the factory, have high production efficiency, and have a high formwork utilization rate compared with the formwork matching by cutting templates on the construction site; under the condition of standardized formwork production, the formwork can be numbered, so that during formwork erection, the installation workers only need to install according to the sequential numbers on the formwork, and the construction speed is fast.

[0012] When the internal corner formwork and the plane formwork are used for formwork erection, the combined splicing is convenient, and their weights are relatively light, which is conducive to installation, disassembly and transportation, thereby reducing the labor intensity of formwork erection and improving the formwork erection construction efficiency at the same time.

[0013] The processing and manufacturing costs of the internal corner formwork and the plane formwork are lower than those of the aluminum formwork, so that the construction party has less one-time investment and saves the cost investment of the construction party.

[0014] A right-angle connector is provided on the internal corner formwork, and a first connector and a right-angle connector are provided on the flat formwork. By using pins and washers and with the help of the right-angle connector and / or the first connector, the first longitudinal secondary backing can be quickly clamped and fixed outside the joint seam of the internal corner formwork and the flat formwork. At the same time, it is also convenient to quickly fix the first longitudinal secondary backing on both sides of the flat panel, which can then help improve the formwork erection efficiency. The first longitudinal secondary backing has high structural strength. Therefore, the first longitudinal secondary backing located outside the joint seam can improve the joint docking quality of adjacent wooden boards, making the combined formwork not easily deformed. At the same time, by using the support of the first longitudinal secondary backing on both sides of the flat panel, the side deformation of the flat panel can be greatly reduced, thus facilitating the overall guarantee of the casting structure forming effect. After the first longitudinal secondary backing is erected, the subsequent processing support positioning of the overall casting cavity can be carried out with the help of the first longitudinal secondary backing, making the reinforcement support positioning work convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some preferred embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a schematic diagram of the application state of the present invention; Figure 2 is the front view of the application state of the present invention; Figure 3 is a schematic diagram of the structure of the internal corner formwork; Figure 4 is a schematic diagram of the structure of the flat formwork; Figure 5 is a schematic diagram of the structure of the first connector; Figure 6 is Figure 1 the enlarged view of part A in Figure 7 is Figure 1 the enlarged view of part B in Figure 8 is Figure 3 the enlarged view of part C in In the figure: 1 internal corner formwork, 11 right-angle plate, 111 first semi-circular groove, 12 right-angle support plate, 2 flat formwork, 21 flat plate, 22 first connecting piece, 221 first right-angle steel plate, 2211 second through-hole, 222 second right-angle steel plate, 23 first transverse secondary backing beam, 3 first longitudinal secondary backing beam, 31 third through-hole, 32 fourth through-hole, 4 casting cavity, 41 casting cavity internal corner surface casting formwork, 42 casting cavity external corner surface casting formwork, 43 front outer extension surface casting formwork, 44 right outer extension surface casting formwork, 5 first transverse main backing beam, 51 main backing beam reinforcement piece, 6 single straight plate, 7 pin, 8 pin piece, 9 wall-piercing tie rod, 101 right-angle connecting plate, 1011 first through-hole, 102 external corner fastener, 103 butt joint beam. Detailed implementation mode

[0017] The following will combine specific embodiments and append Figures 1-8 to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some preferred embodiments of the present invention, rather than all embodiments. Those skilled in the art can make similar deformations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0018] The present invention provides a formwork support assembly (such as Figure 1As shown in the figure, it includes an internal corner formwork 1 and a flat formwork 2. The internal corner formwork includes a right-angle plate 11. At the upper and lower parts of the right-angle plate 11, a right-angle support plate 12 is fixedly arranged. On the back of the right-angle plate 11, a number of right-angle connectors 101 adjacent to the front side wall and the right side wall of the right-angle plate 11 are respectively arranged; the flat formwork 2 includes a flat plate 21. In the actual application process, the right-angle plate 11 and the flat plate 21 can be processed by using wooden formwork or plastic formwork, and they can be cut on-site during formwork erection or cut standardly in the factory. At the upper part of the back of the flat plate 21, two first connectors 22 are fixedly arranged. In actual application, the two first connectors 22 can be arranged symmetrically left and right or each first connector 22 can be individually positioned according to actual positioning requirements. Between the two first connectors 22, a first transverse secondary backing strip 23 is fixedly arranged. The first transverse secondary backing strip 23 can be a wooden square, a composite wooden square, a plastic wooden square, a square steel pipe or a square aluminum pipe; when erecting the flat formwork 2, the first transverse secondary backing strip 23 is located above, so as to improve the support structure strength of the upper edge of the flat plate 21 through the support of the first transverse secondary backing strip 23. At the same time, it is also convenient to carry out the initial erection positioning of the flat formwork 2 by using the first transverse secondary backing strip 23. On the back of the flat plate 21, a number of the right-angle connectors 101 adjacent to the left side wall and the right side wall of the flat plate 21 are respectively arranged. On the right-angle connector 101, a first through-hole 1011 for penetrating the dowel pin 7 is arranged. On the first connector 22, two second through-holes 2211 for penetrating the dowel pin 7 are arranged, and the two second through-holes 2211 are distributed vertically. In the actual application process, by using the combination of the dowel pin 7 and the dowel plate 8 and with the help of the right-angle connector 101 and / or the first connector 22, it is convenient to realize the erection of the support members for supporting the internal corner formwork 1 and the flat formwork 2; in order to facilitate the position adjustment of the dowel pin 7, in this specific embodiment, both the first through-hole 1011 and the second through-hole 2211 are vertically distributed oblong holes. The dowel pin 7 and the dowel plate 8 are both commonly used connection and positioning components in the field of formwork erection. At the tapered tip of the dowel pin 7, a slot into which the lower end of the dowel plate 8 can be inserted is arranged, and the dowel plate 8 is triangular.

[0019] On the basis of the above embodiments, the right-angle connecting member 101 is processed from a right-angle steel plate. A plurality of through holes for passing screws are provided on one straight plate of the right-angle connecting member 101. The right-angle connecting member 101 is fixedly connected to the corresponding right-angle plate 11 or flat plate 21 by screws; the first connecting member 22 includes a first right-angle steel plate 221 and a second right-angle steel plate 222. The first right-angle steel plate 221 is fixedly arranged on the back of the flat plate 21 by welding. A plurality of through holes for screw penetration are provided on the first right-angle steel plate 221. The first right-angle steel plate 221 is fixedly connected to the flat plate by screws. Two of the second through holes 2211 are provided on the side plate of the first right-angle steel plate 221 perpendicular to the flat plate 21. The second right-angle steel plate 222 is fixedly arranged on the upper part of the first right-angle steel plate 221, and the opening of the second right-angle steel plate 222 faces the back of the flat plate 21. A plurality of through holes are provided on the straight plate of the second right-angle steel plate 222 opposite to the flat plate 21. When the first transverse secondary backing 23 is buckled on the two second right-angle steel plates 22, the first transverse secondary backing 23 is fixed to the two second right-angle steel plates 22 by screws.

[0020] When using the internal corner formwork 1 and the flat formwork 2 in the present invention for formwork support, to facilitate the end of the pull-through wall bolt 9 to smoothly penetrate the formwork, here, a plurality of first semi-circular grooves 111 are provided on the front side wall and the right side wall of the right-angle plate 11. In practical applications, the plurality of first semi-circular grooves 111 can be arranged at equal intervals, or opened according to the actual support and positioning positions of the pull-through wall bolt 9. A second semi-circular groove 211 corresponding to the first semi-circular groove 111 is provided on the left side wall and the right side wall of the flat plate 21. In practical applications, the end of the pull-through wall bolt 9 can penetrate into the circular hole formed by the combination of the first semi-circular groove 111 and the second semi-circular groove 211 or the circular hole formed by the combination of the two second semi-circular grooves 211. If the pull-through wall bolt 9 directly penetrates into the above circular hole, there is no need to re-open holes on the formwork, which makes the formwork erection convenient. At the same time, the above circular hole is located at the joint seam, thereby reducing the probability of grout leakage during pouring to a certain extent, and then facilitating the improvement of the pouring construction quality.

[0021] In practical applications, to facilitate the support of the joint seams between the internal corner formwork 1 and the flat formwork 2 and the joint seams between the two flat formworks 2, here, the formwork support assembly further includes a first longitudinal secondary backing 3. The first longitudinal secondary backing 3 is a high-strength aluminum alloy square tube. A plurality of third through holes 31 and fourth through holes 32 are provided on the first longitudinal secondary backing 3. The third through holes 31 are used for passing the dowel pins 7, and the fourth through holes 32 are used for passing the pull-through wall bolts 9. The third through holes 31 and the fourth through holes 32 are perpendicularly distributed.

[0022] The present invention also provides a formwork support method, which is characterized by comprising the above-mentioned formwork support assembly. The formwork support method comprises the following steps: S1. Erect the formwork 41 for pouring the inner corner surface of the pouring cavity; specifically, install and fix the inner corner formwork 1 at a designated position, and then sequentially assemble and fix several of the flat formworks 2 along both sides of the inner corner formwork 1 until the erection and fixation of the formwork 41 for pouring the inner corner surface of the pouring cavity are completed. The number of the flat formworks 2 is determined according to the pouring size of the formwork 41 for pouring the inner corner surface of the pouring cavity; S2. Pass the through-wall tie rod 9; after the first semi-circular groove 111 and the second semi-circular groove 211 are joined together, a first round hole is formed. After two of the second semi-circular grooves 211 are joined together, a second round hole is formed. In the pouring cavity 4, erect the through-wall tie rod 9 corresponding to the first round hole and the second round hole, and one end of the through-wall tie rod 9 penetrates through the first round hole or the second round hole; S3. Erect the formwork 42 for pouring the outer corner surface of the pouring cavity; butt-join and assemble and fix two flat formworks 2 on both sides of the outer corner of the formwork 42 for pouring the outer corner surface of the pouring cavity. After the two flat formworks 2 are assembled and fixed, sequentially assemble and fix a plurality of flat formworks 2 along the outer sides of the two flat formworks 2 until the erection and fixation of the formwork 42 for pouring the outer corner surface of the pouring cavity are completed. The number of the flat formworks 2 is determined according to the pouring size of the formwork 42 for pouring the outer corner surface of the pouring cavity. When erecting the flat formwork 2, ensure that the other end of the through-wall tie rod 9 penetrates through the second round hole formed after two of the second semi-circular grooves 211 are joined together; S4. Erect the formwork 43 for pouring the front outer extension surface of the pouring cavity and the formwork 44 for pouring the right outer extension surface; since the widths of the formwork 43 for pouring the front outer extension surface and the formwork 44 for pouring the right outer extension surface are the thicknesses of the wall, therefore, only one of the flat formworks 2 needs to be installed and fixed on the outer sides of the front outer extension surface and the right outer extension surface of the pouring cavity 4 respectively. After the formwork 43 for pouring the front outer extension surface and the formwork 44 for pouring the right outer extension surface are erected, the formwork support erection of the entire pouring cavity 4 is achieved; S5. Install the first longitudinal secondary backing strip 3; install a first longitudinal secondary backing strip 3 on the outer side of the joint between the internal corner formwork 1 and the flat formwork 2, install a first longitudinal secondary backing strip 3 on the outer side of the joint between two juxtaposed flat formwork 2, the first longitudinal secondary backing strip 3 located on the outer side of the joint penetrates through the wall-piercing tie rod 9 synchronously, and set a first longitudinal secondary backing strip 3 on the side edge of the flat formwork 2 at the external corner of the cast cavity 4, and use the combination of the dowel pin 7 and the dowel plate 8 to realize the installation and fixation of the first longitudinal secondary backing strip 3; specifically, when installing a first longitudinal secondary backing strip 3 on the outer side of the joint between the internal corner formwork 1 and the flat formwork 2, the installer buckles the first longitudinal secondary backing strip 3 on the outer side of the joint between the internal corner formwork 1 and the flat formwork 2. At this time, the upper part of the first longitudinal secondary backing strip 3 is clamped in the card slot formed by the right-angle connector 101 and the first connector 22, and the middle and lower parts of the first longitudinal secondary backing strip 3 are clamped in the card slots of the two right-angle connectors 101. At the same time, the wall-piercing tie rod 9 penetrates through the corresponding fourth through-hole 32. Insert the dowel pin 7 successively through the first through-hole 1011, the third through-hole 31 and the second through-hole 2211, and then insert the dowel plate 8 into the slot of the dowel pin 7, then realize the clamping and fixation of the upper part of the first longitudinal secondary backing strip 3 between the first connector 22 and the right-angle connector 101. Insert the dowel pin 7 successively through the first through-hole 1011, the third through-hole 31 and the first through-hole 1011, and then insert the dowel plate 8 into the slot of the dowel pin 7, then realize the fixation of the first longitudinal secondary backing strip 3 in the card slot formed by the two right-angle connectors 101, and thus realize the clamping and fixation of the middle and lower parts of the first longitudinal secondary backing strip 3 by the above method; when installing a first longitudinal secondary backing strip 3 on the outer side of the joint between two juxtaposed flat formwork 2, the installer buckles the first longitudinal secondary backing strip 3 on the outer side of the joint between the two flat formwork 2. At this time, the upper part of the first longitudinal secondary backing strip 3 is clamped in the card slot formed by the two first connectors 22, and the middle and lower parts of the first longitudinal secondary backing strip 3 are clamped in the card slots of the two right-angle connectors 101. At the same time, the wall-piercing tie rod 9 penetrates through the corresponding fourth through-hole 32. Insert the dowel pin 7 successively through the second through-hole 1011, the third through-hole 31 and the second through-hole 2211, and then insert the dowel plate 8 into the slot of the dowel pin 7, then realize the clamping and fixation of the upper part of the first longitudinal secondary backing strip 3 between the two first connectors 22. Insert the dowel pin 7 successively through the first through-hole 1011, the third through-hole 31 and the first through-hole 1011, and then insert the dowel plate 8 into the slot of the dowel pin 7, then realize the fixation of the first longitudinal secondary backing strip 3 in the card slot formed by the two right-angle connectors 101, and thus realize the clamping and fixation of the middle and lower parts of the first longitudinal secondary backing strip 3 by the above method;When installing the first longitudinal secondary backing beam 3 on the side edge of the flat formwork 22 at the external corner of the casting cavity 4, the installer makes the first longitudinal secondary backing beam 3 fit against the outer sides of the first connecting piece 22 and the right-angle connecting piece 101. Then, the pin 7 is sequentially passed through the second through-hole 2211 and the third through-hole 31. Next, the pin piece 8 is inserted into the slot of the pin 7, thereby fixing the upper part of the first longitudinal secondary backing beam 3 on the flat formwork 22. The pin 7 is sequentially passed through the first through-hole 2211 and the third through-hole 31, and then the pin piece 8 is inserted into the slot of the pin 7 to realize the fixed connection between the first longitudinal secondary backing beam 3 and the right-angle connecting piece 101. By using the above method, the middle and lower parts of the first longitudinal secondary backing beam 3 are fixedly installed on the side edge of the flat formwork 22; S6. Install the first transverse main backing beam 5; several first transverse main backing beams 5 are installed through the outer ends of the row of wall-piercing tension bolts 9 at the same horizontal height. The first transverse main backing beam 5 is a known structural component in the field of casting formwork technology. The adjacent first transverse main backing beams 5 are fixedly connected by using the pin piece 7. Then, the first transverse main backing beams 5 at both ends are relatively tightened and fixed by using the wall-piercing tension bolts 9. By applying pressure to the first transverse main backing beam 5 through the wall-piercing tension bolts 9, the pressure on all the first longitudinal secondary backing beams 3 is realized, and then the first longitudinal secondary backing beams 3 can provide stable support for the formwork; S7. Reinforce the front outstretched surface casting formwork 43 and the right outstretched surface casting formwork 44; several first transverse main backing beams 5 connected to each other at the same horizontal height form a main backing beam reinforcement member 51. The fixed connection between the ends of two main backing beam reinforcement members 51 at the same horizontal height is realized by using the single straight plate 6 and the pin piece 7. The single straight plate 6 is a known structural component in the field of casting formwork technology. The single straight plate 6 presses against the two first longitudinal secondary backing beams 3 erected outside the flat formwork 2, and the single straight plate 6 is used to realize the limit support and fixation of the first longitudinal secondary backing beams 3.

[0023] In the above formwork support method, to further enhance the connection and reinforcement of two adjacent first longitudinal secondary back ribs 3 at the corner of the pouring cavity 4, herein, the formwork support assembly further includes a corner fastener 102. By using the corner fastener 102, the pin 7, and the pin plate 8, the reinforcement connection of the two first longitudinal secondary back ribs 3 at the corner of the pouring cavity 4 can be achieved. The corner fastener 102 includes a clamping groove that can be clamped on the first longitudinal secondary back rib 3. At the same time, the corner fastener 102 further includes a through hole for passing through the pin 7. After all the first longitudinal secondary back ribs 3 are installed and fixed by using the pin 7 and the pin plate 8, again, the reinforcement connection of the two first longitudinal secondary back ribs 3 at the corner of the pouring cavity 4 is achieved by using the corner fastener 102, the pin 7, and the pin plate 8. Specifically, the clamping groove of the corner fastener 102 is clamped on one first longitudinal secondary back rib 3. Then, the pin 8 is sequentially passed through the through hole and the third through hole 31 on the corner fastener 102, and the pin plate 8 is inserted into the pin 7, thereby realizing the fixed connection between the corner fastener 102 and the other first longitudinal secondary back rib 3. Since the corner fastener 102 is synchronously clamped on one first longitudinal secondary back rib 3, the enhanced connection of the two first longitudinal secondary back ribs 3 is achieved.

[0024] In the actual formwork support process, to further improve the support strength of the planar formwork 2, before installing the first transverse main back rib 5, at least one first longitudinal secondary back rib 3 can be erected and installed in the middle of the back surface of several of the planar plates 21 according to the reinforcement requirements.

[0025] In the present invention, "up", "down", "front", "rear", "left", and "right" are all relative positions used for conveniently describing the positional relationship, and thus cannot be understood as absolute positions to limit the protection scope.

[0026] Except for the technical features described in the specification, they are all known technologies to those skilled in the art.

[0027] The preferred embodiments and examples of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. For those of ordinary skill in the art in this technical field, without departing from the concept of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A formwork assembly, characterized in that, It includes a corner formwork and a flat formwork. The corner formwork includes a right-angle plate. At the upper and lower parts of the right-angle plate, a right-angle support plate is fixedly arranged respectively. On the back of the right-angle plate, a number of right-angle connectors adjacent to the front side wall and the right side wall of the right-angle plate are arranged respectively; the flat formwork includes a flat plate. On the upper part of the back of the flat plate, two first connectors are fixedly arranged. Between the two first connectors, a first transverse secondary backing rib is fixedly arranged. On the back of the flat plate, a number of the right-angle connectors adjacent to the left side wall and the right side wall of the flat plate are arranged respectively. On the right-angle connector, a first through-hole for penetrating a pin is arranged. On the first connector, two second through-holes for penetrating a pin are arranged, and the two second through-holes are distributed vertically.

2. The formwork assembly according to claim 1, characterized in that, The first connector includes a first right-angle steel plate and a second right-angle steel plate. The first right-angle steel plate is fixedly arranged on the back of the flat plate. The two second through-holes are arranged on the side plate perpendicular to the flat plate of the first right-angle steel plate. The second right-angle steel plate is fixedly arranged on the upper part of the first right-angle steel plate, and the opening of the second right-angle steel plate faces the back of the flat plate.

3. The formwork assembly according to claim 2, characterized in that, in A number of first semi-circular grooves are arranged on both the front side wall and the right side wall of the right-angle plate. A number of second semi-circular grooves corresponding to the first semi-circular grooves are arranged on both the left side wall and the right side wall of the flat plate.

4. A formwork assembly according to claim 2, characterized in that, Both the first through-hole and the second through-hole are vertically distributed oblong holes.

5. A formwork assembly according to claim 3, characterized in that, This formwork assembly further includes a first longitudinal secondary backing rib. A number of third through-holes and fourth through-holes are arranged on the first longitudinal secondary backing rib. The third through-hole is used for penetrating a pin, and the fourth through-hole is used for penetrating a wall-through tie rod. The third through-hole and the fourth through-hole are perpendicularly distributed.

6. A formwork support method, characterized in that, It includes a formwork assembly according to claim 5 above. This formwork method includes the following steps: S1. Erect the formwork for pouring the corner surface of the casting cavity; install and fix the corner formwork at the specified position, and then sequentially assemble and fix a number of the flat formworks along both sides of the corner formwork until the erection and fixation of the formwork for pouring the corner surface of the casting cavity are completed; S2. Pass the wall-through tie rod; after the first semi-circular groove and the second semi-circular groove are joined together, a first round hole is formed. After the two second semi-circular grooves are joined together, a second round hole is formed. Install a wall-through tie rod corresponding to the first round hole and the second round hole in the casting cavity, and one end of the wall-through tie rod penetrates into the first round hole or the second round hole; S3. Erect the formwork for pouring the outer corner surface of the casting cavity; butt-join and assemble and fix two flat formworks on both sides of the outer corner of the formwork for pouring the outer corner surface of the casting cavity. After the two flat formworks are assembled and fixed, sequentially assemble and fix a plurality of flat formworks along the outside of the two flat formworks until the erection and fixation of the formwork for pouring the outer corner surface of the casting cavity are completed. When erecting the flat formwork, ensure that the other end of the wall-through tie rod penetrates into the second round hole formed after the two second semi-circular grooves are joined together; S4. Erect the formwork for pouring the front extended surface and the right extended surface of the casting cavity; respectively install and fix one of the flat formworks on the outside of the front extended surface and the right extended surface of the casting cavity. S5. Install the first longitudinal secondary backing bars; install a first longitudinal secondary backing bar on the outside of the joint between the internal corner formwork and the flat formwork, install a first longitudinal secondary backing bar on the outside of the joint between two juxtaposed flat formworks, the first longitudinal secondary backing bar located on the outside of the joint is synchronously penetrated through the wall-piercing tie bolts, and set a first longitudinal secondary backing bar on the side edge of the flat formwork at the external corner of the casting cavity, and use the combination of dowel pins and split pins to realize the installation and fixation of the first longitudinal secondary backing bar. S6. Install the first transverse main backing bars; penetrate and install several first transverse main backing bars at the outer ends of the row of wall-piercing tie bolts at the same horizontal height, and use split pins to realize the fixed connection between adjacent first transverse main backing bars. Then, use the wall-piercing tie bolts to relatively tighten and fix the first transverse main backing bars at both ends thereof. S7. Reinforce the formwork for pouring the front extended surface and the right extended surface of the casting cavity; several first transverse main backing bars connected to each other at the same horizontal height form a main backing bar reinforcement chain, and use a single straight plate and split pins to realize the fixed connection of the ends of two main backing bar reinforcement chains at the same horizontal height, and the single straight plate presses against the two first longitudinal secondary backing bars erected on the outside of the flat formwork.

7. A formwork support method according to claim 6, characterized in that, The formwork support assembly further includes an external corner fastener, and the external corner fastener, dowel pins and split pins can be used to realize the reinforcement connection of the two first longitudinal secondary backing bars at the external corner of the casting cavity. In the above step S5, after using dowel pins and split pins to realize the installation and fixation of all the first longitudinal secondary backing bars, again, use the external corner fastener, dowel pins and split pins to realize the reinforcement connection of the two first longitudinal secondary backing bars at the external corner of the casting cavity.

8. A formwork support method according to claim 7, characterized in that, in In the above step S6, before installing the first transverse main backing bars, at least one first longitudinal secondary backing bar is erected and installed in the middle of the back surface of several of the flat plates according to the reinforcement requirements.

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