Flat beam inclined strut type inclined column formwork supporting system and construction method thereof

Abstract

The invention belongs to the technical field of building construction, and particularly relates to a flat beam inclined strut type inclined column formwork supporting system and a construction method thereof.The flat beam inclined strut type inclined column formwork supporting system comprises at least two flat beams arranged in parallel, and the flat beams are horizontally arranged and anchored to a formed structure below an inclined column; one end of the lower inclined strut is connected with the flat beam, and the other end of the lower inclined strut is connected to the inclined column and located at the position below the flat beam anchoring point so as to support the flat beam; the formwork assembly is used for forming a cavity of the inclined column in an enclosing mode, and the formwork assembly comprises a formwork, a back ridge arranged on the outer side of the formwork, a fastener used for fastening the formwork and the back ridge and an additional back ridge arranged on the outer side of the formwork; the lower end of the upper inclined strut is connected with the flat beam, the upper end of the upper inclined strut is connected with the additional back ridge, and the upper inclined strut is used for providing support for resisting concrete side pressure for the formwork assembly through the additional back ridge. The device is stable in structure, easy and convenient to install, high in adaptability and high in safety, and the construction quality and efficiency of the batter post can be effectively guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and particularly relates to a flat beam inclined strut type inclined column formwork support system and a construction method thereof. Background Art

[0002] In modern architectural design, in order to pursue unique shapes and structural requirements, inclined column structures (i.e., inclined columns) are increasingly widely used in various buildings, such as large commercial complexes, stadiums, cultural and art centers, and bridge structures. However, the inclined characteristics of inclined columns pose significant technical challenges to formwork support during the construction process.

[0003] Traditional inclined column formwork support methods, such as using ordinary scaffolding systems or simple inclined struts for support, often have many deficiencies. First, due to the inclination of the inclined column, the lateral pressure generated during concrete pouring and the self - weight of the formwork and wet concrete will generate a large overturning moment and horizontal component force. The stability of traditional support methods often fails to meet the requirements, easily leading to deformation, displacement, and even local instability of the formwork system. Second, the installation of traditional support systems is often relatively complex, requiring a large number of temporary components and connectors, and it is difficult to precisely adapt to the specific force requirements of inclined columns with different inclination angles, cross - sectional dimensions, and storey heights. In addition, the deformation and displacement of the formwork will directly affect the concrete forming quality of the inclined column, resulting in defects such as poor surface flatness and excessive cross - sectional dimension deviation. Seriously, it may even cause safety accidents such as collapse due to support failure. These problems not only affect the project quality and safety, but also reduce the construction efficiency and increase the project cost.

[0004] Therefore, there is an urgent need to develop a new type of formwork support system and a construction method thereof that are structurally stable and reliable, easy to install and efficient, highly adaptable, and can ensure the forming quality of inclined columns. Summary of the Invention

[0005] Object of the Invention: Aiming at the problems existing in the inclined column formwork support system in the prior art, such as poor stability, complex construction, difficulty in ensuring concrete forming quality, and potential safety hazards, the present invention aims to provide a flat beam inclined strut type inclined column formwork support system and a construction method thereof. This system is structurally stable, easy to install, highly adaptable, and safe, and can effectively ensure the construction quality and efficiency of inclined columns.

[0006] Technical Solution: The flat beam inclined strut type inclined column formwork support system described in the present invention includes: At least two parallel flat beams, which are horizontally arranged and anchored to the formed structure below the inclined column; Lower inclined struts, one end of each lower inclined strut is connected to the flat beam, and the other end is connected to the inclined column and is located below the anchoring point of the flat beam to provide support for the flat beam; The formwork component is used to enclose and form the cavity of the inclined column. The formwork component includes a formwork, a backing rib arranged on the outer side of the formwork, a fastener for fastening the formwork and the backing rib, and an additional backing rib arranged on the outer side of the formwork. The upper inclined brace, the lower end of the upper inclined brace is connected to the flat beam, and the upper end is connected to the additional backing rib, and is used to provide support for resisting the lateral pressure of the concrete to the formwork component through the additional backing rib.

[0007] To further improve the above technical solution, anchor fittings are provided on the inner side of the flat beam and the bottom end of the lower inclined brace. The anchor fittings are used to reliably fix the entire support system to the structure (lower inclined column) that has been constructed in the lower layer. The anchor fittings are connected to the high-strength bolts embedded in the lower inclined column. To ensure the anchoring strength, the high-strength bolts are preferably 8.8-grade M20 high-strength bolts, and should be effectively connected to the main stressed steel bars of the lower-layer structure through structures such as couplers to ensure the pulling force. The anchor fittings themselves can be designed as steel plates with bolt holes and are welded to the inner side of the flat beam and the bottom end of the lower inclined brace.

[0008] Furthermore, the flat beam is usually a profiled steel and is horizontally or approximately horizontally installed on the lower-layer structure through the anchor fittings. The flat beam is the main load-bearing member, which is used to bear the load transmitted by the upper inclined brace and the weight of the working platform and transfer it to the anchoring point; the lower inclined brace is usually also a profiled steel, one end of which is connected below the flat beam, and the other end is connected to the lower-layer structure through the anchor fittings; the lower inclined brace, the flat beam and the lower-layer structure together form a stable triangular support structure, greatly enhancing the load-bearing capacity and anti-overturning stability of the flat beam.

[0009] Furthermore, the upper inclined brace is an adjustable-length steel support (composed of a socketed upright and an adjustable screw rod), allowing precise adjustment of the magnitude of the support force and the verticality / tilt of the formwork according to actual needs. The lower end of the upper inclined brace is rotatably connected to the flat beam (connected through a lug welded on the flat beam and a pin shaft), and its upper end is connected to the connecting circular tube of the additional backing rib through a C-type adjustable support. The upper inclined brace is the main support member for resisting the lateral pressure of the concrete and preventing the deformation of the formwork. The C-type bayonet of the C-type adjustable support can be conveniently inserted into the connecting circular tube of the additional backing rib, and the length is finely adjusted and pre-tightened through a screw rod to ensure the effective transmission of the support force and the firmness of the connection. The exposed thread length should be limited (such as not exceeding 400mm) to ensure stability.

[0010] Further, the formwork component includes formwork, backing ribs (wooden joists or square steel), and fasteners (round and square fasteners). The backing ribs are used to support the formwork panel, and the fasteners are used to fasten the formwork and the backing ribs together to form an integral whole. The additional backing ribs are usually composed of profiled steel with greater stiffness (formed by welding two 10# channel steels and connecting round tubes), and its function is to further enhance the overall stiffness on the outside of the formwork and serve as the force-bearing connection point for the upper inclined strut, evenly transmitting the support force of the upper inclined strut to the formwork system. The spacing of the channel steels (such as 60 mm) can accommodate the passing of fastener steel pipes, which are used to connect and fix the additional backing ribs with the formwork system (through round and square fasteners or backing ribs) and the operation scaffold. The outside of the connecting round tube serves as an ideal connecting part for the end of the upper inclined strut.

[0011] Further, it also includes an operation platform, and the operation platform includes steel scaffolding boards, operation scaffolds, and horizontal safety nets. The steel scaffolding boards are laid between adjacent flat beams to form a temporary operation platform for construction workers to operate; the operation scaffolds are fastener-type or socketed-type scaffolds erected on the flat beams, providing a working surface and safety railing at a higher position, and the flat beams can be welded with upright column bases (such as base steel bars) to fix the upright columns of the operation scaffolds; the horizontal safety nets are set under the steel scaffolding boards or the operation platform as a secondary safety protection measure to prevent materials or personnel from falling.

[0012] The present invention also provides a construction method for the above-mentioned flat beam inclined strut formwork support system for inclined columns, including the following steps: (1) During the steel bar binding process under the inclined column, embed connectors for subsequent anchoring at the designed positions, such as embedded couplers for high-strength bolts or embedded steel bars; (2) Process the flat beam and the lower inclined strut according to the design, and weld the required connectors on them, such as anchor fittings, lifting lugs, base steel bars of the upright columns of the operation scaffolds, and connecting beams, etc.; (3) After the concrete of the formed structure reaches the predetermined strength, install the profiled steel platform: horizontally anchor the flat beam on the formed structure by using the embedded connectors; then install the lower inclined strut, connecting the flat beam with the formed structure at the position below the flat beam anchoring point to form a stable triangular support structure; (4) Lay steel scaffolding boards on the installed flat beam, set a horizontal safety net below it, and erect an operation scaffold (8) above it to form a safe operation platform; (5) Install the formwork component of the inclined column, including installing the formwork and the backing ribs, and use fasteners (such as round and square fasteners) for fastening; (6) Install additional backing ribs outside the fasteners on the outward inclined side of the inclined column formwork, and connect and fix it with the formwork component by means of fastener steel pipes, etc.; (7) Install the upper diagonal brace, connect its lower end to the lifting lug of the flat beam, and connect its upper end to the connecting round tube of the additional back rib through a C-shaped adjustable support. By adjusting the length of the upper diagonal brace, provide support and reinforcement for the inclined column formwork to ensure its accurate and stable position; (8) Carry out subsequent concrete pouring and other operations. After the concrete of the inclined columns of this layer meets the strength requirements, some or all components of the support system of this layer can be removed and used for the construction of the inclined columns of the upper layer, so as to achieve turnover.

[0013] Beneficial effects: Compared with the prior art, the advantages of the present invention are: (1) High stability and high-quality forming: The present invention forms a multi-level, high-rigidity three-dimensional support system by forming a stable triangular base in the lower structure through the flat beam and the lower diagonal brace, combined with a direct support path formed by the upper diagonal brace and the additional back rib. This system can effectively resist the lateral pressure and overturning moment generated by the deadweight during the pouring of the inclined column concrete, significantly improve the overall stability of the formwork support, effectively prevent the deformation and displacement of the formwork, and thus ensure the concrete forming quality and dimensional accuracy of the inclined column.

[0014] (2) Strong adaptability and economy: The upper diagonal brace is designed with an adjustable length, which enables the support system to flexibly adapt to the support requirements of inclined column formwork of different heights and different inclination angles, and has a wide range of applications. At the same time, the main components are all steel sections and standard parts, which can be used in a turnover manner, helping to save engineering costs.

[0015] (3) High efficiency and convenience: The system structure of the present invention is relatively clear, and the connection methods between the components (such as embedded anchoring, bolt connection, pin connection, clamping, etc.) are simple and reliable in design, which is convenient for on-site construction personnel to install and disassemble quickly and accurately, and can effectively shorten the construction period of the formwork project and improve the overall construction efficiency.

[0016] (4) High safety: The present invention directly sets up steel scaffolding, work frames and horizontal nets on a stable flat beam structure, forming a safe and reliable aerial work platform that is integrated with the support system, providing convenient operating space and effective safety protection for processes such as formwork installation, steel bar binding and concrete pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of the inclined column formwork support system of the present invention; Figure 2 It is a schematic elevation diagram of the inclined column formwork support system of the present invention; Figure 3 It is a top view of the flat beam of the inclined column formwork support system of the present invention; Figure 4 It is a cross-sectional schematic diagram of the template fixing assembly of the inclined column template support system of the present invention; Figure 5 Schematic diagram of the C-type adjustable bracket for the upper inclined strut of the present invention; Figure 6 Construction flow chart of the inclined column formwork support system of the present invention.

[0018] In the figure: 1. Embedded bolt; 2. Anchor; 3. Lower inclined strut; 4. Horizontal safety net; 5. Flat beam; 6. Lifting lug; 7. Steel scaffolding board; 8. Working scaffold; 9. Upper inclined strut; 10. C-type adjustable bracket; 11. Additional back brace; 12. Fastener steel pipe; 13. Formwork; 14. Wood square; 15. Square-round fastener; 16. Inclined column; 17. Connecting beam; 18. Base steel bar; 19. Connecting round pipe. Specific embodiments

[0019] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the described embodiments.

[0020] Embodiment 1: This embodiment provides a flat beam inclined strut type inclined column formwork support system for the construction of large-section and large-inclination inclined columns 16 in high-rise buildings. The inclined column 16 is an edge external inclined column with an inclination angle of 78°, a square cross-section with a size of 800 - 1000 mm, a concrete strength grade of C30 - C60, a floor height of 4.2 - 6.0 m, and a total of 17 floors.

[0021] As Figures 1 to 5 shown, a flat beam inclined strut type inclined column formwork support system includes the following components: The flat beam assembly includes a flat beam 5, a lifting lug 6, a steel scaffolding board 7, and a connecting beam 17; the inclined strut assembly includes a lower inclined strut 3, an upper inclined strut 9, and a C-type adjustable bracket 10; the formwork fixing assembly includes a formwork 13, a wood square 14, a square-round fastener 15, an additional back brace 11, and a fastener steel pipe 12, and the components are installed and connected as follows.

[0022] 1. Anchoring system: At 0.5 m and 2.5 m below the top elevation of the completed inclined column 16 on the lower layer, during the steel bar binding, a connector for an 8.8-grade M20 high-strength bolt 1 is embedded, and the designed internal embedding depth of the screw is not less than 300 mm, and it is ensured to be reliably connected to the main bar with a diameter of Φ25 or above through a certified connector.

[0023] 2. Flat beam assembly: The flat beam 5 uses I16 I-beam, and its length is determined to be 2.5 m according to calculations. It is fixedly installed by means of the 200×150×20 mm thick steel plate anchor 2 (with M20 bolt holes and welded at an angle of 78° with the I-beam) welded at the end, using the embedded bolt 1 0.5 m below the lower column top. Considering the column section change and construction space, the lateral spacing between two adjacent cantilever flat beams 5 is set to 600 mm. At the positions 1.2 m and 2.2 m above the flat beam 5, lifting lugs 6 made of 12 mm thick steel plates are welded as the lower anchoring points of the upper diagonal brace 9; at the positions corresponding to the vertical poles of the operation frame 8 on the flat beam 5, Φ20 base steel bars 18 with a height of 120 mm are welded to fix the vertical poles of the operation frame. To enhance the integrity, a 10# channel steel connecting beam 17 is added between two adjacent flat beams 5 for connection.

[0024] 3. Lower diagonal brace assembly: The lower diagonal brace 3 uses a double-channel steel composed of two 10# channel steels welded by 10 mm thick steel plates, and the spacing between the channel steels is 30 mm. The lower end of the lower diagonal brace 3 is welded with an anchor 2 of the same size (welded at an angle of 42° with the member), and it is fixedly installed by using the embedded bolt 1 2.5 m below the lower column top. The upper end of the lower diagonal brace 3 is directly welded to the web or lower flange of the flat beam 5, forming an angle of about 45° with the flat beam 5 to form a stable triangular support. The effective height of all welds is not less than 6 mm, and the unilateral effective length is not less than 100 mm, and the welding quality is ensured.

[0025] 4. Upper diagonal brace assembly: The upper diagonal brace 9 uses an adjustable steel support, which consists of a φ48×3.5 mm galvanized socketed pipe vertical pole and a C-type adjustable support 10. The lower end of the diagonal brace 9 is perforated and connected to the lifting lug 6 of the flat beam 5 by means of a pin shaft + safety buckle. The upper end of the diagonal brace 9 is installed with a C-type adjustable support 10, which is welded by a C-type clamp cut from a DN65 steel pipe and an adjustable screw rod of M36 or similar specifications. The C-type clamp is clamped outside the φ60 connecting round pipe 19 of the additional back brace 11, and is tightened and reinforced by rotating the adjustable screw rod, and the exposed thread length is controlled within 400 mm.

[0026] 5. Formwork fixing components: Formwork 13 uses 15mm thick facing wood plywood; secondary ribs 14 use 40×90mm wooden beams, arranged vertically, and the spacing is 250mm according to calculation. The fasteners use square and round buckles 15. The first square and round buckle 15 is horizontally set 150mm above the ground. The inclined connection is wedged with a wooden wedge. The square and round buckles 15 are set perpendicular to the column axis. The spacing below 3m from the bottom of the column is 300mm (densified), and the spacing above 3m is 350mm. On the outward side of the inclined column 16, two groups of additional back ribs 11 are arranged on the outside of the square and round buckles 15. Each group of additional back ribs 11 is welded by two 10# channel steels (webs facing each other, with a spacing of 60mm) and several horizontal φ60 connecting round tubes 19. The inner part of the connecting round tube 19 (between the channel steels) is used to pass through the fastener steel tube 12, which connects the additional back rib 11, the square and round buckle 15 (or the wooden beam 14) and the horizontal rod of the work frame 8 through the fastener, playing the role of fixing and connecting the wall. The outer part of the connecting round tube 19 serves as the connection point of the upper diagonal brace 9.

[0027] According to the support requirements, two upper diagonal braces 9 are set, and the lower support points (hanging ears 6) are respectively located 1.2m and 2.2m above the flat beam 5, and the upper support points (additional back ribs 11) are correspondingly located at about 1.7m and 3.5m of the column height (ensuring that the upper support points are above 2 / 3 of the column height). The installation angle of the diagonal brace 9 is preferably kept between 45° and 60°.

[0028] 6. Working platform and safety protection components: Steel scaffolding boards 7 are fully laid between two adjacent flat beams 5 to form an operating platform. Horizontal nets 4 are hung under the steel scaffolding boards 7. A double-row working frame 8 with fasteners is set up on the flat beam 5, and the vertical poles are fixed on the base steel bars 18. The horizontal distance of the working frame is 750mm, the vertical distance is 600mm (i.e. the spacing between flat beams), and the step distance is 1.8m. The top of the vertical pole is at least 1.2m higher than the working layer to form a protective railing, and two horizontal protective poles are set on the outside of the working layer, with a spacing of 600mm. The working frame 8 is treated as two walls by adding fastener steel pipes 12 at the back ribs 11 to enhance stability.

[0029] Embodiment 2: This embodiment provides a construction method for a flat beam diagonal bracing inclined column formwork support system, such as Figure 6 As shown, the process is as follows: (1) Embedded bolt 1 Considering that there is a concrete cantilever plate with an extension size of 250mm on the outside of the inclined column 16, during the process of binding the reinforcement of the lower column, 8.8-grade M20 high-strength bolts 1 are embedded at 0.5m and 2.5m below the top elevation of the inclined column 16. The embedded depth of the screw shall not be less than 300mm, and it shall be effectively connected with the main force-bearing reinforcement through connectors and other structures.

[0030] (2) Processing of flat beam 5 and lower diagonal brace 3 The flat beam 5 is made of I16 I-beam, and its length is determined to be 2.5 m according to the inclination angle of the inclined column. Ear plates 6 with a thickness of 12 mm are welded at positions 1.2 m and 2.2 m above, serving as the anchoring points for the upper inclined strut 9; at the position of the vertical pole of the working platform, a Φ20 base steel bar 18 with a height of 120 mm is welded as the fixing point of the platform; 10# channel steel connecting beams 17 are added on both sides of the I-beam for connection to strengthen the integrity.

[0031] The inclined strut 3 is composed of two 10# channel steels and a 10-mm-thick steel plate connected to form a double-channel steel, with a channel steel spacing of 30 mm. At the anchoring sections of the flat beam 5 and the inclined strut 3, steel plates with a thickness of 200×150×20 mm are welded as the anchor fittings 2, and the angles with the members are 78° and 42° respectively. The effective height of the weld at each part is not less than 6 mm, and the unilateral effective length is not less than 100 mm, and there shall be no phenomena such as slag inclusions and pores that do not meet the quality requirements.

[0032] (3)Installation of the flat beam 5 and the lower inclined strut 3 After the concrete strength of the lower inclined column reaches 20 Mpa, the installation of the steel platform of this layer is carried out. The flat beam 5 is installed by using the embedded bolts 1 at 0.5 m below the top of the lower column, and is firmly connected to the lower inclined column 16 through the anchor fittings 2. Considering that the column section changes from 1000 mm to 800 mm from bottom to top, for the convenience of construction, the lateral spacing of the two cantilever flat beams 5 is 600 mm.

[0033] The lower inclined strut 3 is installed by using the embedded bolts 1 at 2.5 m below the top of the lower column, serving as the lower support member of the cantilever flat beam 5. The lower end of the inclined strut 3 is firmly connected to the lower inclined column 16 through the anchor fittings 2, and the upper end is connected to the flat beam 5 by welding, and the angle is preferably about 45°.

[0034] (4)Installation of the working platform 8, the horizontal safety net 4 and the steel footboard 7 According to the spacing of the I-beams of the two adjacent flat beams 5 and considering the high-altitude operation situation, steel footboards 7 are laid on the two adjacent flat beams 5 as a temporary working platform, and a horizontal safety net 4 is added below it as a secondary protection.

[0035] A double-row fastener-type working platform 8 is erected on the upper part of the flat beam 5. The vertical poles of the working platform 8 are fixed at the position of the base steel bar 18, with a transverse spacing of 750 mm, a longitudinal spacing of 600 mm, and a step distance of 1.8 m. The height of the vertical poles extending upward from the top is not less than 1.2 m for the outer protection, and the horizontal bars on the outer side of the working layer are vertically spaced 600 mm. At the same time, to consider the overall stability of the platform, two horizontal bars are added to the upper part of the scaffold and connected to the fixed steel pipes 12 of the additional back ribs 11 for wall connection treatment.

[0036] (5)Binding of the inclined column steel bars, installation of the formwork 13, the back ribs 14 and the round and square fasteners 15 The formwork 13 on the side of the column is made of 15-mm-thick plywood, and the backing ribs 14 are made of 40×90-mm wooden beams or 40×40-mm square steel, arranged vertically with a spacing of 250 mm determined by calculation. The outside of the backing ribs 14 is fixed by the round-square fasteners 15. Considering the stress performance of the round-square fasteners 15 comprehensively, the first fastener is set horizontally with a distance of 150 mm from the ground, and the inclined surface connection position is wedged tightly with wooden wedge blocks; the above fasteners are set perpendicular to the column axis, and the control value of the fastener spacing for the column height below 3 m is 300 mm (dense), and the control value of the fastener spacing for the column height above 3 m is 350 mm.

[0037] (6)Installation of additional backing ribs 11 On the outwards-inclined side of the inclined column, two groups of additional backing ribs 11 are arranged outside the round-square fasteners 15. The additional backing ribs 11 are composed of two 10# steel channels welded to the connecting round pipe 19 with a diameter of φ60. The spacing between the steel channels is 60 mm. The inner side of the connecting round pipe 19 is used for the fastening steel pipe 12 to fix the additional backing ribs 11 and the inclined column, and the outer side is used as the fixing point of the upper inclined brace 9.

[0038] (7)Installation of the upper inclined brace 9 The lower part of the inclined column is supported and reinforced by the upper inclined brace 9. The lower support point is about 500 mm from the bottom surface of the column, and the upper support point should be located in the area above 2 / 3 of the column height. For convenience, the heights of the two anchoring points are 1.2 m and 3.5 m above the flat beam 5 respectively.

[0039] During specific implementation, the upper inclined brace 9 is an adjustable steel support, composed of a disc buckle vertical rod and a C-type adjustable support 10. The lower end of the inclined brace 9 is perforated and connected to the lifting lug 6 of the flat beam 5 by a pin shaft + safety buckle connection method; the upper end uses the C-type adjustable support 10 to be stuck into the round pipe connection of the additional backing ribs 11. The angle of the inclined brace 9 is preferably 45~60°, and the effective transmission of the supporting force is ensured by adjusting the adjustment seat.

[0040] The disc buckle vertical rod of the inclined brace 9 is made of φ48×3.5-mm galvanized steel pipe, and the C-type adjustable support 10 is made of a DN65 steel pipe cut as a clamping support and welded to the adjustable screw rod, and the exposed thread length does not exceed 400 mm. Considering the height of the concrete column, 3 m is used as a single pouring section, and the upper part of the concrete is poured before the lower part starts to set. After the lower column meets the strength requirements, the inclined column support erection and pouring operations are carried out upwards in turn according to this process.

[0041] The flat beam inclined brace type inclined column formwork support system and its construction method provided by the present invention successfully solve many problems in the prior art through ingenious structural design and standardized component application, and show good technical effects and economic benefits in practical engineering applications.

[0042] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation on the present invention itself. Various changes in form and detail may be made thereto without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A flat beam diagonal bracing inclined column formwork support system, characterized in that: include: At least two parallel flat beams (5), the flat beams (5) being arranged horizontally and anchored to the formed structure below the inclined column (16); A lower diagonal brace (3), one end of the lower diagonal brace (3) being connected to the flat beam (5), and the other end of the lower diagonal brace (3) being connected to the diagonal column (16) and being located below the anchor point of the flat beam (5) to provide support for the flat beam (5); A template assembly, used for enclosing a cavity for forming the inclined column (16), the template assembly comprising a template (13), a back rib (14) arranged outside the template (13), a fastener (15) for fastening the template (13) and the back rib (14), and an additional back rib (11) arranged outside the template (13); An upper diagonal brace (9), the lower end of which is connected to the flat beam (5), and the upper end of which is connected to the additional back rib (11), and is used to provide support for the formwork assembly to resist concrete lateral pressure through the additional back rib (11).

2. The flat beam diagonal bracing inclined column formwork support system according to claim 1 is characterized in that: Anchors (2) are provided on the inner side of the flat beam (5) and the bottom end of the lower diagonal brace (3). The anchors (2) on the inner side of the flat beam (5) are connected to the embedded bolts (1) embedded in the diagonal column (16) and are arranged horizontally. The anchors (2) at the bottom end of the lower diagonal brace (3) are connected to the embedded bolts (1) embedded in the diagonal column (16). The top end of the lower diagonal brace (3) is welded to the outer side of the flat beam (5) to form a triangular support structure. The embedded bolts (1) are connected to the main force-bearing steel bars of the diagonal column (16) via a connector.

3. The flat beam diagonal bracing inclined column formwork support system according to claim 2 is characterized in that: The embedded bolts (1) are 8.8-grade M20 high-strength bolts, and the embedded bolts (1) are connected to the main stress-bearing steel bars of the inclined columns (16) via connectors.

4. The flat beam diagonal bracing inclined column formwork support system according to claim 2 is characterized in that: The flat beam (5) is a 16# I-beam, the lower diagonal brace (3) is composed of two 10# channel steels, and the upper diagonal brace (9) is a support member with adjustable length.

5. The flat beam diagonal bracing inclined column formwork support system according to claim 4 is characterized in that: The flat beam (5) is provided with a lifting lug (6) for connecting the lower end of the upper diagonal brace (9); the lower end of the upper diagonal brace (9) is connected to the lifting lug (6) of the flat beam (5) via a pin and a safety buckle, and the upper end is fixed via a C-shaped adjustable support (10) and an additional back rib (11); the C-shaped adjustable support is formed by cutting a steel pipe as a bracket and welding it with an adjustable screw, so as to achieve length adjustment and preload application of the upper diagonal brace (9).

6. The flat beam diagonal bracing inclined column formwork support system according to claim 5 is characterized in that: The additional back rib (11) comprises at least two parallel and spaced-apart steel beams and at least one connecting circular tube (19) connected to the steel beams, and the upper end of the upper diagonal brace (9) is connected to the connecting circular tube (19).

7. The flat beam diagonal bracing inclined column formwork support system according to claim 1 is characterized in that: It also includes a working platform arranged on the flat beam (5), the working platform including a steel scaffolding board (7) connected between two flat beams (5), a working frame (8) arranged above the steel scaffolding board (7), and a horizontal net (4) arranged below the steel scaffolding board (7).

8. The flat beam diagonal bracing inclined column formwork support system according to claim 1 is characterized in that: The template (13) is made of veneer plywood, the back rib (14) is made of wooden beams or square steel, and the fastener (15) is made of square and round buckles.

9. The flat beam diagonal bracing inclined column formwork support system according to claim 8 is characterized in that: The distance between adjacent back ribs (14) is 250 mm.

10. A construction method for realizing the flat beam diagonal bracing inclined column formwork support system according to any one of claims 1 to 9, characterized in that: The following steps are involved: (1) During the reinforcement binding process of the lower layer inclined columns, pre-embed the connectors for anchoring according to the designed position; (2) Process the flat beam and lower diagonal brace according to the design, weld the lifting lugs, pole base, connecting beam and anchors on the flat beam, and weld the anchors on the lower diagonal brace; (3) After the concrete of the lower inclined column reaches the predetermined strength, the steel platform is installed: the flat beam and the lower inclined brace are anchored on the inclined column using pre-buried connectors, and the top of the lower inclined brace is welded to the flat beam to form a stable triangular support structure; (4) Lay the steel scaffolding board (7) on the installed flat beam, set a horizontal net below, and set up a double-row work frame with fasteners above to form a work platform; (5) Install the formwork components of the inclined columns, including the formwork and back ribs, and fasten them with square and round buckles; (6) Install additional back ribs on the outside of the formwork assembly and connect and fix them with fastener steel pipes; (7) Install the upper diagonal brace, connect the lower end of the upper diagonal brace to the lifting lug of the flat beam, connect the upper end of the upper diagonal brace to the connecting round tube of the additional back rib through the C-shaped adjustable support, and provide support and reinforcement for the inclined column formwork by adjusting the length of the upper diagonal brace to ensure its accurate and stable position; (8) Carry out subsequent concrete pouring and other operations. After the concrete of the inclined columns of this layer meets the strength requirements, some or all components of the support system of this layer can be removed and used for the construction of the inclined columns of the upper layer, so as to achieve turnover use.

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