Large bracket layered inner supporting structure for water conservancy project and construction method

Abstract

The invention discloses a water conservancy project large bracket layered inner supporting structure and a construction method. The water conservancy project large bracket layered inner supporting structure comprises a formwork and a cable-stayed supporting system. The formwork is located on the outer boundary of poured concrete. The cable-stayed supporting system comprises a supporting column, an anchoring pile, a rear cable-stayed rib and a front cable-stayed rib, the supporting column and the anchoring pile are both located on the upper surface of the concrete poured in the previous stage, and the bottom ends of the supporting column and the anchoring pile are embedded in the concrete at a certain included angle with the upper surface of the concrete; the two ends of the rear diagonal brace are fixedly connected with the supporting columns and the anchoring piles correspondingly. One end of the front diagonal brace is fixed to the formwork through an anchorage device, and the other end of the front diagonal brace is fixedly connected with the supporting column. By the adoption of the layered inner supporting structure, the concrete formwork can be rapidly and efficiently overhung and fixed when the large corbel is poured, the construction efficiency of the large corbel is improved, stress of the corbel structure is participated in the subsequent operation stage, and the quality of the corbel structure is improved.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy project construction, and in particular to a large-scale corbel layered internal support structure of a water conservancy project and a construction method thereof. Background Art

[0002] There are many special-shaped cantilever structures in water conservancy and hydropower projects, such as large corbels on the dam top and anchor piers of hydraulic arc gates of overflow dams. For large cantilever structures in projects, the support system is usually set up from the ground or floor surface from bottom to top according to needs, and then the bottom formwork is arranged. When the cantilever structure is too large, the main ribs, secondary ribs and other bearing structures of the support system are slow to set up, the demolition work is large, and the safety performance is low, which seriously affects the construction efficiency and the personal safety of the operators. Summary of the invention

[0003] The purpose of the present invention is to provide a layered internal support structure and construction method for large corbels in water conservancy projects in order to address the problems of slow erection and dismantling of support systems, large engineering workload, low safety performance, and serious impact on construction efficiency and personal safety of workers during the casting of large corbels in water conservancy projects. The layered internal support structure can realize rapid and efficient inverted fixation of concrete formwork during the casting of large corbels, thereby improving the construction efficiency of large corbels, and participating in the stress bearing of the corbel structure in the subsequent operation stage to improve the quality of the corbel structure.

[0004] The present invention is achieved through the following technical solutions:

[0005] In the first aspect, the present invention provides a layered internal support structure of a large corbel of a water conservancy project, comprising a formwork and an oblique support system; the formwork is located at the outer boundary of the poured concrete; the oblique support system comprises support columns, anchor piles, rear oblique reinforcement and front oblique reinforcement, the support columns and anchor piles are both located on the upper surface of the poured concrete in the previous stage, and the bottom ends are buried inside at a certain angle to the above-mentioned concrete upper surface; the two ends of the rear oblique reinforcement are respectively fixedly connected to the support column and the anchor pile; one end of the front oblique reinforcement is fixed to the formwork by an anchor, and the other end is fixedly connected to the support column.

[0006] As a preferred embodiment of the present invention, the support columns and anchor piles are inclined toward a side away from the template, and the inclination angle is less than or equal to 90°.

[0007] As a preferred embodiment of the present invention, the anchor comprises an anchor ring and a petal-type clip; the anchor ring is located outside the template, and the petal-type clip is located between the front oblique reinforcement and the anchor ring and is clamped on the outer wall of the front oblique reinforcement.

[0008] As a preferred solution of the present invention, anti-skid teeth are provided inside the petal-type clip, and the anti-skid teeth are of unidirectional design, with the tips of the teeth facing the large end of the petal-type clip.

[0009] As a preferred solution of the present invention, a connection structure is provided at the end of the template, and the connection structure is used for connecting the templates of different casting layers.

[0010] As a preferred solution of the present invention, the connection structure includes a connecting rib beam protruding outward from the end of the template, the connecting rib beam is provided with bolt holes, and the connecting rib beams at the ends of adjacent templates are tensioned and tightened by bolt assemblies.

[0011] As a preferred solution of the present invention, the number of the formwork and the diagonal support system corresponds to the number of corbel casting layers.

[0012] As a preferred embodiment of the present invention, the number of corbel casting layers includes but is not limited to three layers.

[0013] As a preferred embodiment of the present invention, the connection between the support column and the rear oblique reinforcement and the front oblique reinforcement includes but is not limited to welding and riveting; the connection between the anchor pile and the rear oblique reinforcement includes but is not limited to welding and riveting.

[0014] In a second aspect, the present invention provides a method for constructing a layered internal support for a large corbel of a water conservancy project, using the layered internal support structure for a large corbel of a water conservancy project described in the first aspect, comprising the following steps:

[0015] Step 1: bury the support column and anchor pile in the concrete poured in the previous stage in advance, connect the support column and anchor pile through the rear oblique reinforcement, pass the front end of the front oblique reinforcement through the template and fix it on the template through the anchor, fix the lower end of the template and the concrete poured in the previous stage at the specified position, pull the template to rotate around its lower end through the front oblique reinforcement, and when the template reaches the specified design position, fix the rear end of the front oblique reinforcement on the support column;

[0016] Step 2: When pouring concrete, continuously inject concrete until it reaches a predetermined height, and before the poured concrete solidifies, pre-embed the anchor piles and support columns required for the next layer of concrete pouring;

[0017] Step 3: After the concrete solidifies and reaches the specified strength, connect the bottom end of the upper template to the upper end of the casting layer template so that the upper and lower templates are closely connected, and repeat the installation of the above-mentioned inclined support system and concrete pouring until all casting layers are completed;

[0018] Step 4: After the concrete of all the pouring layers of the corbel has solidified, remove the formwork from top to bottom, and leave all parts of the diagonal support system in the corbel to participate in the stress of the corbel in the subsequent operation stage.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0020] The present invention adopts the layered pouring of corbel concrete to reduce the gravity effect of the poured concrete on the formwork; the inverted formwork that originally required full-floor support was replaced by the design of an inclined support system, thereby avoiding the difficulty of building a full-floor support on a sloped overflow channel. A rear inclined tie bar is designed to connect the anchor pile behind the support column to enhance the support force of the support column on the front inclined tie bar. The support column and the anchor pile have a wide range of materials, and their inclination angle relative to the concrete in the previous stage can be flexibly set according to the construction and support conditions. The front section of the front inclined tie bar is located outside the formwork and an anchor is provided, which enhances the connection between the front inclined tie bar and the formwork, and the anchor construction and layout are simple; the inner wall of the petal-type clip in the anchor is designed with anti-skid teeth to avoid relative sliding between the front inclined tie bar and the petal-type clip. After each layer is poured, the various parts of the inclined support system are not dismantled, which reduces the construction steps; the various parts of the inclined support system are left in the concrete to enhance the overall strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0022] Figure 1 It is a diagram of the large-scale corbel parts of the water conservancy project to be constructed in the present invention;

[0023] Figure 2 It is a schematic diagram of the construction of the layered internal support structure of a large-scale corbel of a water conservancy project in the present invention;

[0024] Figure 3 It is a detailed installation diagram of the connection structure of the upper and lower template butt ends in the present invention;

[0025] Figure 4 It is the detailed drawing of the anchor installation in the present invention;

[0026] Figure 5 It is the overall structure diagram of the anchor in the present invention;

[0027] Figure 6 It is a schematic diagram of the petal-type clip of the anchor in the present invention;

[0028] Figure 7 It is a schematic diagram of the AA cross section of the petal-type clip in the present invention.

[0029] Marks and corresponding parts names in the attached drawings:

[0030] 1. Concrete pouring in the previous stage; 2-1. Rear oblique reinforcement; 2-2. Front oblique reinforcement; 3. Anchor piles; 4. Support columns; 5. Formwork; 5-1. Casting layer formwork; 5-2. Upper layer formwork; 5-3. Connecting ribs; 6. Connecting structure; 6-1. Bolts; 6-2. Nuts; 7. Anchor; 7-1. Anchor ring; 7-2. Petal clip; 7-3. Anti-slip teeth. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0033] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0034] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0036] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0037] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces), unless otherwise clearly and specifically defined.

[0038] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0039] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0040] like Figure 1 As shown in the figure, the large corbel I in a water conservancy project belongs to the bottom structure on the downstream side of the gate pier III and is located above the overflow channel II. At present, when constructing large corbel I, a full-height bracket is usually set up on the overflow channel II to support the inverted formwork. Since the overflow channel II has a slope, the formwork is difficult to fix and easy to shift during the corbel casting construction. Therefore, it is difficult to set up a full-height bracket on the overflow channel II that meets the requirements of stable support. At the same time, the full-height bracket is slow to set up, the amount of demolition work is large, and the safety performance is low, which seriously affects the construction efficiency and the personal safety of the operators.

[0041] In order to solve the above problems, the applicant, after in-depth research, invented an internal support method for the inverted corbel formwork, which can realize the rapid and efficient inverted fixation of the concrete formwork when pouring large corbels, thereby improving the construction efficiency of large corbels, and participating in the stress bearing of the corbel structure in the subsequent operation stage, thereby improving the quality of the corbel structure.

[0042] Please refer to Figures 2 to 7A large-scale corbel layered internal support structure for a water conservancy project provided in an embodiment of the present application comprises a formwork 5 and an oblique support system; the formwork 5 is located at the outer boundary of the poured concrete; the oblique support system comprises a support column 4, an anchor pile 3, a rear oblique tie bar 2-1 and a front oblique tie bar 2-2, the support column 4 and the anchor pile 3 are both located on the upper surface of the poured concrete 1 in the previous stage, and the bottom ends are buried inside at a certain angle with the above-mentioned upper surface of the concrete; the two ends of the rear oblique tie bar 2-1 are fixedly connected to the support column 4 and the anchor pile 3 respectively; one end of the front oblique tie bar 2-2 is fixed to the formwork 5 by an anchor 7, and the other end is fixedly connected to the support column 4.

[0043] During concrete pouring, the concrete exerts a force on the formwork 5, and the front oblique tie bar 2-2 fixed to the formwork 5 by the anchor 7 transmits the force on the formwork 5 to the support column 4, and then a part of it is converted into the pressure of the support column 4 and transmitted to the lower concrete, and the other part is converted into the tension in the rear oblique tie bar 2-1 and transmitted to the lower concrete. After the construction of the corbel is completed, the oblique support system is located in the corbel concrete and is not removed, participating in the force of the corbel during the operation stage.

[0044] Specific as Figure 2 As shown, the casting of the large corbel I is divided into multiple layers, and each layer is provided with a set of inclined support system and formwork 5. The anchor piles 3 and support columns 4 in the inclined support system of each layer are planted above the concrete 1 cast in the previous stage, and form a certain angle with the upper surface of the concrete 1 cast in the previous stage (inclined to the side away from the formwork 5, the angles are θ1, θ2, θ3 in the figure), and the above angle should be less than or equal to 90°; the anchor piles 3 and support columns 4 are arranged front and back, wherein the anchor piles 3 are located behind the support columns 4, the support columns 4 are located behind the formwork 5, and the formwork 5 is located behind the anchor 7, and the anchor 7 is anchored to the front end of the front inclined reinforcement 2-2 and fits with the outer side of the formwork 5.

[0045] According to some embodiments of the present application, a connecting structure 6 is provided at the end of the formwork 5, and the connecting structure 6 is used for connecting the formworks 5 of different casting layers; the connecting structure 6 includes a connecting rib beam 5-3 protruding outward from the end of the formwork 5, and bolt holes are opened on the connecting rib beam 5-3. The connecting rib beams 5-3 at the ends of adjacent formworks 5 are pulled and tightened by bolt assemblies.

[0046] Specific as Figure 3 As shown, the bolt assembly includes a bolt 6-1 and a nut 6-2. The casting layer template 5-1 and the upper template 5-2 respectively have connecting ribs 5-3 at the butt ends, and bolt holes are correspondingly arranged on the two opposite connecting ribs 5-3. The bolt 6-1 passes through the bolt holes and the nut 6-2 left in the two connecting ribs 5-3 in sequence. By tightening the nut 6-2, the casting layer template 5-1 and the upper template 5-2 can be tightly fitted.

[0047] According to some embodiments of the present application, the anchor 7 includes an anchor ring 7-1 and a petal-type clip 7-2; the anchor ring 7-1 is located on the outside of the template 5, and the petal-type clip 7-2 is located between the front oblique reinforcement 2-2 and the anchor ring 7-1, and is clamped on the outer wall of the front oblique reinforcement 2-2.

[0048] Specific as Figure 5 As shown, the anchor ring 7-1 has a hole in it so that the petal clip 7-2 can be inserted. The hole in the anchor ring 7-1 is in a tapered shape with a large outside and a small inside so as to anchor the petal clip 7-2 and the front end of the front oblique tie bar 2-2. The petal clip 7-2 is a hollow truncated cone structure composed of two or more petals; a certain gap is left between each petal of the petal clip 7-2 so that the petal clip 7-2 is in close contact with the front oblique tie bar 2-2 after being stressed.

[0049] like Figure 6 As shown, the petal-type clip 7-2 is provided with anti-slip teeth 7-3 inside; Figure 7 As shown, the anti-slip teeth 7-3 should be designed in one direction, and the tip of the anti-slip teeth 7-3 should be toward the thicker end of the petal-type clip 7-2, so as to engage with the front oblique tie rod 2-2 to make the fixation more secure. Figure 4 As shown, the petal-type clip 7-2 is fixed to the front end of the front oblique reinforcement 2-2 through the anti-slip teeth 7-3; the front end of the front oblique reinforcement 2-2 is fixed in the anchor ring 7-1 through the petal-type clip 7-2, and then fixed to the outside of the template 5.

[0050] According to some embodiments of the present application, the number of the formwork 5 and the diagonal support system corresponds to the number of corbel casting layers.

[0051] According to some embodiments of the present application, the number of corbel casting layers includes but is not limited to three layers.

[0052] According to some embodiments of the present application, the connection between the support column 4 and the rear oblique reinforcement 2-1 and the front oblique reinforcement 2-2 includes but is not limited to welding and riveting; the connection between the anchor pile 3 and the rear oblique reinforcement 2-1 includes but is not limited to welding and riveting.

[0053] According to some embodiments of the present application, the materials of the support column 4 and the anchor pile 3 include but are not limited to H-shaped steel and reinforced concrete. However, if it is reinforced concrete, its strength should be higher than the design strength of the poured concrete.

[0054] It should be noted that the large corbels described in the embodiments of the present application include but are not limited to overflow dams.

[0055] A method for constructing a layered internal support structure for a large corbel of a hydraulic engineering project provided in an embodiment of the present application adopts the layered internal support structure for the large corbel of a hydraulic engineering project described above, and includes the following steps:

[0056] Step 1: When installing the inclined support system, first, the anchor pile 3 and the support column 4 are planted above the concrete 1 poured in the previous stage by burying them in advance; further, the anchor pile 3 is connected to the upper end of the support column 4 through the rear inclined tie bar 2-1, and the rear inclined tie bar 2-1 and the anchor pile 3 provide tension for the support column 4, so that the support column 4 can maintain stability during subsequent construction; further, the front end of the front inclined tie bar 2-2 is passed through the holes of the anchor ring 7-1 in the template 5 and the anchor 7 in turn, and then the petal clip 7-2 is installed at the front end of the front inclined tie bar 2-2 to apply tension to the front inclined tie bar 2-2. A pre-tightening force causes the petal-type clip 7-2 to clamp the front oblique reinforcement 2-2 and squeeze it into the hole of the anchor ring 7-1; further, the lower end of the template 5 is fixed to the concrete 1 poured in the previous stage at the specified position, and then the rear end of the front oblique reinforcement 2-2 is fixed to the upper end of the support column 4. In this process, the anchor 7 at its front end can be tightly combined with the outer side of the template 5 by loosening and tightening the rear end of the front oblique reinforcement 2-2, and then the template 5 is pulled to rotate around its lower end. When the template 5 reaches the specified design position, the rear end of the front oblique reinforcement 2-2 is fixed to the upper end of the support column 4 by welding or other methods.

[0057] Step 2: When pouring concrete, continuously inject concrete until it reaches a predetermined height. At this stage, under the action of gravity, the concrete will exert a force on the formwork 5. The outer side of the formwork 5 limits the displacement of the formwork 5 through the anchor 7 and the front oblique reinforcement 2-2, and converts the force of the concrete into a tensile force in the front oblique reinforcement 2-2, and then transmits it to the support column 4. The support column 4 converts part of the transmitted force into its own axial force and then transmits it to the previous stage of concrete pouring 1 at its bottom end, and converts the other part into a tensile force in the rear oblique reinforcement 2-1 and transmits it to the rear anchor pile 3, and finally transmits it to the previous stage of concrete pouring 1; before the above-mentioned poured concrete solidifies, the anchor piles 3 and support columns 4 required for the next layer of concrete pouring should be planted in advance at its upper end.

[0058] Step 3: After the concrete solidifies and reaches the specified strength, stack the connecting rib beam 5-3 at the bottom of the upper template 5-2 with the upper connecting rib beam 5-3 of the casting layer template 5-1, and pass the bolt 6-1 through the bolt holes in the two connecting rib beams 5-3, and tighten the nut 6-2 to make the upper and lower templates fit tightly to prevent concrete from overflowing during pouring; further, repeat the above-mentioned installation of the inclined support system and concrete pouring until all casting layers are completed.

[0059] Step 4: After the concrete of all the pouring layers of the large corbel has solidified, remove the formwork 5 from top to bottom. During the disassembly process, first unscrew the nut 6-2 and then pull out the bolt 6-1. The removal of the anchor 7 requires the use of professional tools. Then all the formwork 5 can be removed, and the remaining parts of the inclined support system remain in the corbel to participate in the stress of the corbel in the subsequent operation stage.

[0060] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A layered internal support structure of a large corbel for a hydraulic engineering project, characterized in that: It includes a formwork and an oblique support system; the formwork is located at the outer boundary of the poured concrete; the oblique support system includes support columns, anchor piles, rear oblique reinforcement and front oblique reinforcement, the support columns and anchor piles are both located on the upper surface of the concrete poured in the previous stage, and the bottom ends are buried inside at a certain angle with the above-mentioned upper surface of the concrete; the two ends of the rear oblique reinforcement are fixedly connected to the support column and the anchor pile respectively; one end of the front oblique reinforcement is fixed to the formwork by an anchor, and the other end is fixedly connected to the support column.

2. The layered internal support structure of a large corbel for hydraulic engineering according to claim 1 is characterized in that: The support column and the anchor pile are inclined toward a side away from the template, and the inclination angle is less than or equal to 90°.

3. The layered internal support structure of a large corbel for hydraulic engineering according to claim 1 is characterized in that: The anchor comprises an anchor ring and a petal-type clip; the anchor ring is located on the outside of the template, and the petal-type clip is located between the front oblique reinforcement and the anchor ring, and is clamped on the outer wall of the front oblique reinforcement.

4. The layered internal support structure of a large corbel for hydraulic engineering according to claim 3 is characterized in that: Anti-skid teeth are arranged inside the petal-type clip. The anti-skid teeth are of unidirectional design, and the tips of the teeth face the large end of the petal-type clip.

5. The layered internal support structure of a large corbel for hydraulic engineering according to claim 1 is characterized in that: The end of the template is provided with a connection structure, and the connection structure is used for connecting the templates of different casting layers.

6. The layered internal support structure of a large corbel for hydraulic engineering according to claim 5, characterized in that: The connection structure comprises a connection rib beam which is located at the end of the template and protrudes outward, and bolt holes are opened on the connection rib beam. The connection rib beams at the ends of adjacent templates are pulled and pressed together by bolt assemblies.

7. The layered internal support structure of a large corbel for hydraulic engineering according to claim 1 is characterized in that: The number of the formwork and the diagonal support system corresponds to the number of corbel casting layers.

8. The layered internal support structure of a large corbel for hydraulic engineering according to claim 7, characterized in that: The number of corbel casting layers includes but is not limited to three layers.

9. The layered internal support structure of a large corbel for hydraulic engineering according to claim 1, characterized in that: The connection between the support column and the rear oblique reinforcement and the front oblique reinforcement includes but is not limited to welding and riveting; the connection between the anchor pile and the rear oblique reinforcement includes but is not limited to welding and riveting.

10. A method for constructing a layered internal support for a large corbel of a hydraulic engineering project, using the layered internal support structure for a large corbel of a hydraulic engineering project as claimed in any one of claims 1 to 9, comprising the following steps: Step 1: bury the support column and anchor pile in the concrete poured in the previous stage in advance, connect the support column and anchor pile through the rear oblique reinforcement, pass the front end of the front oblique reinforcement through the template and fix it on the template through the anchor, fix the lower end of the template and the concrete poured in the previous stage at the specified position, pull the template to rotate around its lower end through the front oblique reinforcement, and when the template reaches the specified design position, fix the rear end of the front oblique reinforcement on the support column; Step 2: When pouring concrete, continuously inject concrete until it reaches a predetermined height, and before the poured concrete solidifies, pre-embed the anchor piles and support columns required for the next layer of concrete pouring; Step 3: After the concrete solidifies and reaches the specified strength, connect the bottom end of the upper template to the upper end of the casting layer template so that the upper and lower templates are closely connected, and repeat the installation of the above-mentioned inclined support system and concrete pouring until all casting layers are completed; Step 4: After the concrete of all the pouring layers of the corbel has solidified, remove the formwork from top to bottom, and leave all parts of the diagonal support system in the corbel to participate in the stress of the corbel in the subsequent operation stage.

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