A combined structural node for supporting formwork

Abstract

The present invention belongs to the field of construction technology, and specifically relates to a combined structural node for supporting formwork. The present invention includes a support sleeve, wherein a main beam is horizontally provided through the support sleeve, and the end of the secondary beam is detachably fixed to the side wall of the main beam in the cavity of the support sleeve; a support anchor is installed on the main beam; along the length direction of the secondary beam, secondary reinforcements with length directions parallel to the length direction of the secondary beam are arranged between adjacent main beams, and the two ends of the secondary reinforcement are respectively inserted into the slots at the corresponding connecting blocks of one group of support anchors, at this time, the top surface of the connecting block and the upper surface of the secondary reinforcement together constitute, or only the upper surface of the secondary reinforcement constitutes, a shelf surface for the formwork to be placed. The present invention, while having a compact structure and convenient assembly and disassembly, simultaneously achieves the requirements for effective and stable support of the formwork.

Description

Technical Field

[0001] The invention belongs to the technical field of construction, and in particular relates to a combined structural node for supporting a formwork. Background Art

[0002] Currently, reinforced concrete structures are the most widely used in my country's construction industry. With the development of the real estate industry, large-scale residential buildings are becoming ubiquitous, requiring a significant amount of formwork for indoor concrete structures. On the one hand, the assembly and disassembly of formwork is a significant part of the construction process, and excessive disassembly and assembly time is detrimental to cost management. On the other hand, prior to pouring cement, existing concrete floor slabs require a large number of formwork and support columns. These columns are temporarily assembled by construction workers using tools such as saws and cuts, then hammered together using nails and "slot"-shaped nails, depending on site needs. After the concrete forming process is complete, the nails are removed and the formwork and support columns are disassembled. This not only creates a heavy workload and is labor-intensive, but also severely damages the formwork and support columns after forced disassembly, resulting in a low reuse rate. At the same time, in previous construction, after pouring reinforced concrete, the formwork and adjustable supports could not be removed until the strength of the reinforced concrete reached 100%. Concrete usually needs to be cured for 28 days, which means the minimum turnover period for the formwork and support components is also 28 days, which further extends the construction period. In addition, traditional formwork is made of heavy steel, which is difficult to transport, which is also a major problem. Later, patents such as patent announcement number "CN2234476Y" entitled "Concrete Floor Mold" and patent announcement number "CN2594381Y" entitled "Double-detachable formwork support operating platform frame" provided partial solutions. Although they have played a role in simplifying the process to a certain extent, the large size of the support columns and the resulting tediousness of disassembly and assembly, as well as the inconvenience of reciprocating transportation, remain technical problems that cannot be solved at present. Therefore, they need to be solved urgently. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide a modular structural node for supporting a formwork, which is compact in structure and convenient for assembly and disassembly while achieving the requirements for effective and stable support of the formwork.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A modular structural node for supporting a formwork, characterized in that it includes a support sleeve, a main crossbeam is horizontally provided through the support sleeve, the ends of the secondary crossbeam are detachably fixed to the side walls of the main crossbeam within the support sleeve cavity, and the length direction of the secondary crossbeam is perpendicular to the length direction of the main crossbeam;

[0006] The main crossbeam is provided with a support anchor point, which includes a connecting block arranged on both sides of the main crossbeam body and a U-shaped clamping rod connecting the two connecting blocks. The groove of the clamping rod constitutes an accommodating cavity for clamping into the main crossbeam body. After the clamping rod is clamped into the main crossbeam with the notch facing downward, the two vertical rod sections of the clamping rod extend downward and pass through the connecting block located on the corresponding side of the main crossbeam. The bottom end of each vertical rod section and the matching connecting block form a detachable fit that can be disassembled and assembled from the bottom of the connecting block.

[0007] Along the length direction of the secondary crossbeam, secondary reinforcement with its length direction parallel to the length direction of the secondary crossbeam is arranged between adjacent main crossbeams. The two ends of the secondary reinforcement are respectively inserted into the grooves of the corresponding connecting blocks of one group of support anchor points. At this time, the top surface of the connecting block and the upper surface of the secondary reinforcement together constitute, or only the upper surface of the secondary reinforcement constitutes, a placement surface for the formwork to be placed.

[0008] Preferably, notches are opened at the tops of the main beam and the secondary beam, thereby forming an open groove structure with a U-shaped cross-section; connecting ribs for tightening the notches are arranged at the notches of the main beam and the secondary beam; the groove cavities of the main beam and the secondary beam constitute a pouring cavity for pouring concrete.

[0009] Preferably, a sealing plate is arranged at the end of the secondary crossbeam, and a reserved screw hole is preset on the sealing plate. The connecting bolts pass through the reserved screw hole and are threadedly engaged with the main crossbeam.

[0010] Preferably, an avoidance hole is reserved on the support sleeve for the main beam and the auxiliary beam to pass through, and a fully enclosed weld is provided between the avoidance hole and the outer wall of the corresponding beam to perform a reinforcement function.

[0011] Preferably, the connecting block has an outer shape of a rectangular groove with the groove facing downward, the groove length direction of the connecting block is parallel to the length direction of the main crossbeam, and the outer side wall of the connecting block and the outer side wall of the main crossbeam fit each other; an external thread section is provided at the bottom end of the vertical rod section, and after the bottom end passes through the bottom of the groove of the connecting block, it forms a threaded fit with the nut located in the groove cavity of the connecting block.

[0012] Preferably, the template is a detachable structure, and the template is placed on the shelf surface; the junction of adjacent templates is located at the main beam and the secondary beam.

[0013] Preferably, the template is a non-disassembly structure, and an upper protrusion with a necking section is convexly provided on the upper plate surface of the template.

[0014] Preferably, the upper protrusion is T-shaped, and the vertical section of the upper protrusion constitutes a necking section; in the cross section of the upper protrusion, both ends of the horizontal section of the upper protrusion are triangular in shape with gradually decreasing thickness.

[0015] Preferably, the template is formed by two or more sub-templates that are spliced ​​end to end at adjacent ends; mortise and tenon joints are arranged at adjacent ends of the sub-templates; mounting holes for the passage of transverse connecting pins are coaxially arranged on the mortise and tenon joints at the same end of the sub-templates, so that after the mortise and tenon joints at the adjacent ends of two adjacent sub-templates are plugged into each other, the transverse connecting pins can be passed through the mounting holes, thereby connecting the plugged mortise and tenon joints into one.

[0016] Preferably, the two groups of mortise and tenon connections that are plugged into each other are respectively named concave connection parts and convex connection parts; the outer shapes of the concave connection parts and the convex connection parts are both tooth-shaped, and the distance between the single tooth profile and the lower plate surface of the sub-template gradually increases, thereby forming a wedge-shaped upturned single tooth; the area between adjacent upturned single teeth on the same concave connection part is arranged with a sloped matching surface for the upturned single tooth at the convex connection part to be inserted, and the area between adjacent upturned single teeth on the same convex connection part is arranged with a sloped matching surface for the upturned single tooth at the concave connection part to be inserted, so that the concave connection parts and the convex connection parts at the adjacent ends form a complementary structure that can be plugged into each other.

[0017] The beneficial effects of the present invention are:

[0018] 1) Through the above scheme, on the one hand, the present invention relies on the plug-in combination of the support sleeve, the main beam and the secondary beam to achieve the purpose of modularization and integrated assembly of the three, and the load-bearing capacity of the overall structure can be effectively guaranteed. On the other hand, the foothold of the entire support anchor point is solved by relying on the main beam, and no longer relies on the traditional bottom-up support with additional support columns, which is obviously more flexible and convenient to use; at the same time, the support anchor point only occupies the space on both sides of the main beam, the number of support columns required is also less, and the overall volume is also smaller. After the floor concrete has hardened, consider removing the connecting block from the clamping rod, and the main beam and secondary beam are still retained. Then, the formwork can be retained or removed as appropriate; after that, the clamping rod remains in the floor concrete, and it will not affect the relevant properties of the floor concrete.

[0019] Thus, the present invention has the advantages of compact structure and convenient assembly and disassembly, which can meet the requirements of effective and stable support of the template, and the number of installed support columns can also be greatly reduced.

[0020] 2) For the main and secondary beams, U-shaped steel tube beams are used as carriers. Long holes are opened in the upper part to form notches, and small connecting ribs are welded for tensioning. This not only ensures the effective pouring of concrete, but also uses the combination of notches and connecting ribs to achieve a pressure relief effect of the bulging force, which can prevent the bulging generated during the hardening of concrete from causing deformation of the components, with significant results.

[0021] 3) The two ends of the horizontal section of the upper protrusion are triangular in shape with gradually decreasing thickness, which can effectively reduce the number of corners and avoid stress concentration. At the same time, the strip-shaped wing surface formed by the triangular end can passively deform during the solidification of concrete, which is beneficial to further increase the contact area between the concrete and the upper protrusion through its own corrugated deformation, further improving the coordination and fastening effect between the two, and is particularly suitable for use in formwork with non-disassembly structure.

[0022] 4) When the present invention is actually in operation, it can be applied to both detachable and non-detachable formwork. When using a non-detachable formwork, the degree of firmness of its fit with the concrete is a very important reference quantity. The present invention relies on the design of an upper protrusion with a necking section. The purpose is that after the concrete is poured later, the concrete will bite into the upper protrusion when it solidifies, thereby improving the post-construction fastening effect of the present invention and ensuring its actual service life and assembly stability.

[0023] At this point, the present invention adopts a disassembly-free assembly concept, which not only utilizes the structural changes of the formwork of the disassembly-free structure to ensure the firmness of the fit between the concrete structure and the formwork, but also utilizes the quick-disassembly and assembly between the formwork and the support anchor points to ensure the later rapid disassembly and assembly effect of the support anchor points and even the support components, and further highlights the advantages of the present invention of small size, simple structure and stable disassembly and assembly.

[0024] 5) The present invention is simple and quick to install. The length of the connecting rod can be determined based on the required main beam dimensions. After on-site assembly, it can be placed directly on the main beam, making it simple and convenient. Furthermore, because the externally threaded section and nut are used for fastening, and both the externally threaded section and nut are located outside the concrete structure, they can be quickly removed after the concrete structure has hardened, effectively reducing construction time. The nut installation process is similar.

[0025] 6) The design of the slots takes into account that relying solely on connecting blocks can only achieve a simply supported beam installation effect; by adopting the slots, the auxiliary reinforcement can be used to form a bottom support structure, thereby further improving the support reliability and support quality of the present invention, ensuring that the formwork under the floor slab and the weight of the wall during floor slab casting can be effectively supported.

[0026] 7) As a further preferred solution of the above solution, on the one hand, the construction and installation of the present invention can be made faster and more convenient. The use of assembled mortise and tenon connection forms, through the mutual engagement of the mortise and tenon connection parts and further connection through transverse connecting pins, can effectively control the expansion effect of the concrete structure body during the hydration process, and after installation, it is tighter, the gap is smaller, and the visual impact of the main structure is smaller. Combined with the supporting effect of the secondary reinforcement, the formwork itself can be formed by a combination of smaller sub-forms while ensuring its position stability. On the other hand, it also makes the formwork have a decorative function. Since the gap is small after the mortise and tenon is installed, the sub-formwork does not need to be disassembled and replaced. During construction, various decorations can be directly arranged on the lower plate surface of the sub-formwork, which can effectively reduce the overall time from the construction of the concrete structure body to the decoration. Even the decoration on the sub-formwork can be considered to be replaced according to the owner's requirements. The style is varied and the use is very flexible.

[0027] 8) The upturned single teeth, combined with the sloped mating surface, form concave and convex connecting portions, where the upturned single teeth interlock with each other, achieving a complementary design. Furthermore, the coordination of the concave and convex connecting portions further reduces the gap between the two after installation, creating a straight-line gap when viewed from above. This ensures the neatness of the lower surface of the sub-form, further minimizing the visual impact of the main structure and enhancing the integrity of the decorative pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the assembly structure of the present invention;

[0029] Figure 2 for Figure 1 Schematic diagram of the structure after removing the template;

[0030] Figure 3 Exploded diagram of the coordination status of the main beam and the secondary beam;

[0031] Figure 4 for Figure 1 a bottom-up view of the structure shown;

[0032] Figure 5 It is a three-dimensional diagram of the coordination state of the support anchor point;

[0033] Figure 6 This is the assembly state diagram of the template of the non-disassembly structure;

[0034] Figure 7 for Figure 6 CC sectional view;

[0035] Figure 8 for Figure 7 A partial enlarged view of part I;

[0036] Figure 9 for Figure 7 A partial enlarged view of part II;

[0037] Figure 10 A schematic diagram of the three-dimensional structure of one embodiment of a sub-template;

[0038] Figure 11 A schematic diagram of the three-dimensional structure of another embodiment of a sub-template.

[0039] The actual correspondence between the reference numerals and component names of the present invention is as follows:

[0040] 10-support anchor point; 11-connecting rod; 11a-vertical rod segment; 11b-horizontal rod segment; 12-connecting block; 12a-slot; 13-nut;

[0041] 20-support assembly; 21-support sleeve; 22-main beam; 23-secondary beam; 23a-reserved screw hole; 24-connecting rib plate; 25-fully enclosed weld;

[0042] 30 - template; 31 - sub-template; 32 - mortise and tenon joint; 32a - upturned single tooth; 32b - sloped mating surface; 33 - mounting hole; 34 - transverse connecting pin; 35 - upper protrusion; 36 - insulation cavity;

[0043] 40-Secondary reinforcement. DETAILED DESCRIPTION

[0044] For ease of understanding, the template of the non-disassembly structure is taken as an example, that is, the template 30 is not disassembled after installation. Figure 1-11 , the specific structure and working mode of the present invention are described as follows:

[0045] like Figure 1-9 As shown, the specific implementation structure of the present invention includes a template 30 of a non-detachable structure, a support component 20 that serves as the main skeleton, and a support anchor point 10 for positioning and fixing the template 30; this structural form is particularly suitable for large-span, super-high-rise buildings, etc.

[0046] in:

[0047] 1. Support components

[0048] The outer shape of the support assembly 20 is shown in FIG. Figure 1-4 As shown, it includes a support column as the main carrier, and the support column outer shell is provided with Figure 1 The support sleeve 21 shown in the figure. In actual design, after the support sleeve 21 is installed, concrete can be directly poured into the support sleeve 21 to form the required steel tube concrete soil column structure.

[0049] The main beam 22 and secondary beam 23 are both constructed from ordinary square steel tubes. Long holes are drilled through the tops to form notches, and small connecting ribs 24 are welded to the tubes for tensioning. This prevents deformation caused by bulging during the concrete hardening process. The support sleeve 21 includes holes of identical shape and area at corresponding locations on the main beam 22 and secondary beam 23. The main beam 22 extends directly through the support sleeve 21 horizontally. Inside the support sleeve 21, holes are provided for bolt assembly at locations corresponding to the secondary beam 23, providing positioning and connection. The secondary beam 23 is terminated with a sealing plate with pre-set screw holes. Bolts connect the main and secondary beams 22 and 23 within the support sleeve 21, and further reinforcement is achieved using fully enclosed welds 25 on the outside of the sleeve. After assembly, support anchor points 10 are installed on the main beam 22 and secondary beam 23. After formwork and even reinforcement are installed, the floor slab concrete can be poured uniformly.

[0050] 2. Support anchor point 10

[0051] from Figure 4-9 As can be seen from the figure, the support anchor point 10 is supported by the main beam 22. The support anchor point 10 includes a U-shaped clamping rod 11, a connecting block 12 and a nut 13. When installing, the clamping rod 11 is as Figure 4-5 As shown, it is inserted into the main crossbeam 22 and formed into an integral piece by means of the threaded fit between the connecting block 12 and the vertical rod section 11a of the clamping rod 11, and finally combined to form an anchor point system for placing the template of the non-disassembly structure.

[0052] Figure 4-9 This is only one embodiment of the implementation structure. Since the steel tube concrete beams as the main cross beam 22 and even the secondary cross beam 23 are structural components, they are not disassembled. Therefore, when disassembling them separately later, only the semicircular component, that is, the connecting block 12, needs to be disassembled. At this time, on the one hand, Figure 5 As shown, a slot 12a is provided on the connecting block 12, so that Figure 4 and Figure 7 As shown, the secondary reinforcement 40 is secured by the slots 12a, thereby forming a support structure with the secondary reinforcement 40. This further enhances the support reliability and quality of the present invention, ensuring effective support for the formwork 10 below the floor slab and the weight of the wall during floor pouring. Furthermore, during installation, the connecting rod 11 is installed as close to the side of the main beam 22 as possible, thereby reducing interference between the formwork 30 and the connecting rod 11 during installation.

[0053] Of course, when actually cooperating with the formwork 30, the supporting surface can be formed by relying solely on the auxiliary reinforcement 40 or the auxiliary reinforcement 40 and two cross beams together, or the connecting block 12 itself can be used as part of the supporting surface, depending on the site conditions.

[0054] When multiple sub-templates 31 are combined to form a combined structure of the template 30, a matching groove can also be recessed at the end of the sub-template 31, so that the end of the sub-template 31 can be clamped into the clamping rod 11 to indirectly avoid the clamping rod 11, which will not be repeated here.

[0055] 3. Template 30

[0056] like Figure 6-11 As shown, the template 30 of the non-detachable structure includes a sub-template 31 and a mortise and tenon joint 32 at the corresponding end of the sub-template 31. The upper plate surface of the sub-template 31 is provided with an upper protrusion 35, and the lower plate surface forms a decorative surface. Figure 8 As shown, the adjacent sub-templates 31 are connected to form a structure as shown in FIG. 1 , by means of a transverse connecting pin 34 penetrating the mounting holes 33 at the mortise and tenon joints 32 that engage with each other. Figure 6 The structure shown.

[0057] As for the sub-templates 31, since the adjacent mortise and tenon joints 32 of the two adjacent sub-templates 31 are designed in a complementary manner, they can be plugged into each other to form a Figure 6-8 The structure shown makes the present invention very convenient to use as it only needs to cooperate with each other in a building block manner to form the entire construction surface.

[0058] Regardless of the above-mentioned matching mode, the mortise and tenon joint 32 includes corresponding convex joints and concave joints. Figure 6-8 It can be seen that the concave connection part and the convex connection part are complementary. Figure 10-11 As shown, each embodiment relies on the concave connection part and the convex connection part formed by the combination of the upward-curved single tooth 32a and the sloped matching surface 32b. The upward-curved single teeth 32a of the two are staggered or staggered, thereby realizing a complementary design and ensuring a straight installation gap when viewed from above. The installation hole 33 coaxially penetrates the corresponding single tooth at the same end, ultimately achieving the following Figure 8 The lateral connection effect is shown.

[0059] The decorative layer can be selected in different forms according to user needs. At the same time, the sub-template 31 is a hollow structure with a heat-insulating cavity 36 in the middle, and the air in the middle can play a heat-insulating role.

[0060] For the upper protrusion 35, if Figure 6-11 As shown, the upper protrusion 35 is a T-shaped protrusion, which is used to further strengthen the bite effect between the sub-template 31 and the structure, making the sub-template 31 more secure during use.

[0061] During the actual construction of the present invention, after the aforementioned support assembly 20 is erected, the support anchor points 10 are installed in sequence, and then the template 30 of the non-disassembly structure is laid on top, and it is ensured that the support anchor points 10 can be installed in sequence. Figure 6 The adjacent sub-forms 31 are hooked and fixed together, with the mortise and tenon joints 32 interlaced and complemented with each other. Lateral connecting pins 34 are then used to secure the joints, ultimately forming the entire construction surface. This effectively resists the expansion effect of concrete during the curing process, and the gaps at subsequent joints are small, meeting the visual requirements of the main structure. Finally, concrete is poured directly on top of the construction surface of the present invention. Once the concrete solidifies, a stable floor structure is formed.

[0062] Of course, during actual construction, a detachable formwork 30 can also be used for laying. After the floor concrete solidifies, it can be disassembled along with the support anchor points 10. At this time, attention should be paid to the coordination between the formwork 30 and the beams so as not to affect the subsequent disassembly. I will not go into details here.

[0063] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, but rather encompasses the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0064] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0065] The technology, shape, and structure not described in detail in the present invention are all well-known technologies.

Claims

1. A modular structural node for supporting a formwork, characterized by: The invention comprises a support sleeve (21), wherein a main crossbeam (22) is horizontally provided through the support sleeve (21), and the end of the secondary crossbeam (23) is detachably fixed to the side wall of the main crossbeam (22) in the cylindrical cavity of the support sleeve (21), and the length direction of the secondary crossbeam (23) is perpendicular to the length direction of the main crossbeam (22); A supporting anchor point (10) is installed on the main crossbeam (22), and the supporting anchor point (10) includes connecting blocks (12) arranged on both sides of the main crossbeam (22) and a U-shaped clamping rod (11) connecting the two connecting blocks (12). The groove cavity of the clamping rod (11) constitutes an accommodating cavity for clamping the rod body of the main crossbeam (22); after the clamping rod (11) is clamped into the main crossbeam (22) with the notch facing downward, the two vertical rod sections (11a) of the clamping rod (11) extend downward and pass through the connecting blocks (12) located on the corresponding sides of the main crossbeam (22), and the bottom end of each vertical rod section (11a) and the matching connecting block (12) form a detachable fit that can be disassembled and assembled from the bottom of the connecting block (12); Along the length direction of the secondary crossbeam (23), secondary reinforcements (40) are arranged between adjacent main crossbeams (22) with their length directions parallel to the length direction of the secondary crossbeam (23). The two ends of the secondary reinforcements (40) are respectively inserted into the slots (12a) at the corresponding connecting blocks of one group of support anchor points (10). At this time, the top surface of the connecting block (12) and the upper surface of the secondary reinforcement (40) together constitute, or only the upper surface of the secondary reinforcement (40) constitutes, a placement surface for the template (30) to be placed.

2. A modular structural node for supporting a formwork according to claim 1, characterized in that: The tops of the main crossbeam (22) and the auxiliary crossbeam (23) are provided with notches, thereby forming an open groove structure with a U-shaped cross section; connecting ribs (24) for tightening the notches are arranged at the notches of the main crossbeam (22) and the auxiliary crossbeam (23); and the grooves of the main crossbeam (22) and the auxiliary crossbeam (23) constitute a pouring cavity for pouring concrete.

3. A modular structural node for supporting a formwork according to claim 2, characterized in that: A sealing plate is arranged at the end of the secondary crossbeam (23), and a reserved screw hole (23a) is preset on the sealing plate. The connecting bolt passes through the reserved screw hole (23a) and is then threadedly engaged with the main crossbeam (22).

4. A modular structural node for supporting a formwork according to claim 3, characterized in that: The support sleeve (21) is provided with a relief hole for the main beam (22) and the auxiliary beam (23) to pass through, and a fully enclosed weld (25) having a reinforcement function is provided between the relief hole and the outer wall of the corresponding beam.

5. A modular structural node for supporting a formwork according to claim 1, 2, 3 or 4, characterized in that: The connecting block (12) is in the shape of a rectangular groove with the groove opening facing downwards, the groove length direction of the connecting block (12) is parallel to the rod length direction of the main cross beam (22), and the outer wall of the connecting block (12) and the outer wall of the main cross beam (22) are in contact with each other; the bottom end of the vertical rod section (11a) is provided with an external thread section, which, after passing through the groove bottom of the connecting block (12), forms a threaded fit with the nut (13) located in the groove cavity of the connecting block (12).

6. A modular structural node for supporting a formwork according to claim 1, 2, 3 or 4, characterized in that: The template (30) is a detachable structure, and the template (30) is placed on the shelf surface; the joints of adjacent templates (30) are located at the main beam and the auxiliary beam (23).

7. A modular structural node for supporting a formwork according to claim 1, 2, 3 or 4, characterized in that: The template (30) is a disassembly-free structure, and an upper protrusion (35) with a necking section is convexly provided on the upper plate surface of the template (30).

8. The modular structural node for supporting a formwork according to claim 7, characterized in that: The upper protrusion (35) is T-shaped, and the vertical section of the upper protrusion (35) forms a necking section; in the cross section of the upper protrusion (35), both ends of the horizontal section of the upper protrusion (35) are triangular in shape with gradually decreasing thickness.

9. The modular structural node for supporting a formwork according to claim 7, characterized in that: The template (30) is formed by splicing two or more sub-templates (31) end to end with adjacent ends; the adjacent ends of the sub-templates (31) are provided with mortise and tenon joints (32); the mortise and tenon joints (32) at the same end of the sub-templates (31) are coaxially penetrated with mounting holes (33) for the transverse connecting pins (34) to pass through, so that after the mortise and tenon joints (32) at the adjacent ends of the two adjacent sub-templates (31) are plugged into each other, the transverse connecting pins (34) can pass through the mounting holes (33), thereby connecting the plugged mortise and tenon joints (32) into one piece.

10. The combined structural node for supporting formwork according to claim 9, characterized in that: The two groups of mortise and tenon connection parts (32) that are plugged into each other are respectively named as concave connection parts and convex connection parts; the outer shapes of the concave connection parts and the convex connection parts are both tooth-shaped, and the spacing between the single tooth profile and the lower plate surface of the sub-template (31) gradually increases, thereby forming a wedge-shaped upward-curving single tooth (32a); the area between adjacent upward-curving single teeth (32a) on the same concave connection part is arranged with a slope-shaped matching surface (32b) for the upward-curving single tooth (32a) at the convex connection part to be inserted, and the area between adjacent upward-curving single teeth (32a) on the same convex connection part is arranged with a slope-shaped matching surface (32b) for the upward-curving single tooth (32a) at the concave connection part to be inserted, so that the concave connection parts and the convex connection parts at the adjacent ends form a complementary structure that can be plugged into each other.

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