Template support welding reinforcement structure and structural beam support template assembly

Abstract

This utility model belongs to the field of building formwork and discloses a formwork support welding reinforcement structure and a structural beam support formwork assembly. The formwork support welding reinforcement structure includes a U-shaped plate, end plates, internal stiffening plates, and guide tubes. The U-shaped plate includes a base plate and two side plates, each side plate being perpendicular to the base plate. Two end plates are fixed to the U-shaped plate, each end plate being installed at one end of the U-shaped plate. Each end plate is welded to the base plate and the two side plates, forming a rectangular box together. Two internal stiffening plates are installed inside the rectangular box, each internal stiffening plate being welded to the two side plates. The guide tube is located between the two internal stiffening plates. The structural beam support formwork assembly includes the formwork support welding reinforcement structure, steel support pipes, and multiple matching formwork panels. This utility model can effectively shorten the processing cycle, reduce safety hazards during on-site construction, and provide a safe and reliable working environment for construction personnel.

Description

Technical Field

[0001] This utility model belongs to the field of building formwork, and more specifically, relates to a formwork support welding reinforcement structure and a structural beam support formwork assembly. Background Technology

[0002] With the rapid development of my country's construction industrialization, aluminum alloy formwork systems have been widely used in super high-rise buildings, affordable housing, and standardized residential projects due to their significant advantages such as light weight, high construction efficiency, good forming quality, and high recyclability. In aluminum formwork construction, the structural beam support system is the core component ensuring the geometric accuracy of concrete components and construction safety.

[0003] Currently, traditional aluminum alloy formwork beam bottom support structures typically employ an open profile + welded positioning component model. Specifically, a simple U-shaped open aluminum bracket is usually welded to the back of the aluminum formwork beam bottom plate, or a reinforcing pad is directly welded between the formwork ribs, and then a short round tube is welded to the center of the pad as a guide and positioning component for the steel support top support.

[0004] However, the steel support pipes of the steel support top usually act directly on the U-shaped open aluminum bracket or reinforcing plate on the back of the formwork. This force transmission path is too direct and concentrated, which is a typical point-to-point high-stress force transmission mode. Since aluminum alloy is less hard than steel, when bearing the huge self-weight of the concrete above and the construction live load, the stress at the support point often exceeds the yield limit of the aluminum alloy plate. This can easily cause local plastic deformation at the support point. In extreme cases, the steel support pipe may even break through the formwork surface directly due to the lack of a sufficient rigid diffusion layer, resulting in what is commonly known in the industry as the "formwork bursting" phenomenon. This not only causes material scrap but also leads to serious concrete loss and honeycomb surface defects. Utility Model Content

[0005] In view of the above-mentioned defects or improvement needs of the existing technology, this utility model provides a template support welding reinforcement structure and a structural beam support template assembly, which is simple and quick to produce, can effectively shorten the production cycle, reduce labor costs, and provide a safer and more reliable working environment for construction workers.

[0006] To achieve the above objectives, according to one aspect of this utility model, a template support welding reinforcement structure is provided, comprising a U-shaped plate, an end plate, an inner stiffening plate, and a guide tube, wherein:

[0007] The U-shaped plate includes a base plate and two side plates fixed together. The two side plates are parallel to each other, and each side plate is perpendicular to the base plate. Each side plate is provided with a plurality of pin holes.

[0008] Two parallel end plates are fixed to the U-shaped plate. Each end plate is perpendicular to the side plate and the base plate, and each end plate is installed at one end of the U-shaped plate to seal the U-shaped plate. Each end plate is provided with multiple pin holes. Each end plate is welded to the base plate and the two side plates. The U-shaped plate and the two end plates together form a rectangular box.

[0009] The rectangular box is provided with two parallel inner stiffening plates. Each inner stiffening plate is parallel to the end plate and is welded to the base plate and the two side plates.

[0010] The guide tube is located between the two inner stiffening plates, the guide tube is perpendicular to the substrate, and the guide tube is welded to the substrate.

[0011] Preferably, the substrate and each of the side plates are made of 6061-T6 aluminum alloy.

[0012] Preferably, the centerline of the guide tube passes through the center of the substrate.

[0013] Preferably, each of the inner stiffening plates is fitted to the outer wall of the guide tube.

[0014] Preferably, the thickness of the substrate is 4mm to 6mm, and the thickness of the side plate is 8mm to 10mm.

[0015] Preferably, the end plate has a width of 58mm to 62mm, a length of 180mm to 185mm, and a thickness of 8mm to 10mm.

[0016] Preferably, the width, length, and thickness of the inner stiffening plate are the same as the width, length, and thickness of the end plate, respectively.

[0017] Preferably, the diameter of the pin hole is 16mm to 18mm.

[0018] According to another aspect of this utility model, a structural beam support formwork assembly is also provided, including the aforementioned formwork support welded reinforcement structure, and further including steel support pipes and multiple matching formworks, wherein:

[0019] For the matching template used to contact the beam side of the structural beam, the matching template is fixedly connected to the end plate of the template support welded reinforcement structure by angle profiles and pins;

[0020] For the matching formwork used to support the structural beam, the matching formwork is fixedly connected to the end plate of the formwork support welded reinforcement structure by pins;

[0021] The end of the guide tube away from the substrate extends into the steel support tube. The guide tube and the steel support tube are coaxially arranged, and the end of the steel support tube near the guide tube abuts against the two inner stiffening plates to support the template support welding reinforcement structure.

[0022] Preferably, the steel support tube and the guide tube are fitted with a clearance.

[0023] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0024] 1) The template support welding reinforcement structure of this utility model, the welding of the inner stiffening plate with the base plate and the side plate, further strengthens the overall structure. The inner stiffening plate increases the overall rigidity of the entire rectangular box, which can more effectively absorb and disperse the impact load from the steel support pipe, forming a rapid load distribution path from the support point to the entire frame, ensuring the stability of the stress process.

[0025] 2) The template support welded reinforcement structure of this utility model consists of a U-shaped plate and two end plates welded together to form a rectangular box. Compared with open profiles, this closed box structure has a significantly increased polar moment of inertia and torsional section modulus. This structural form can effectively resist the cross-sectional distortion and torsional deformation caused by the lateral pressure of concrete pouring, ensuring the geometric stability of the template support welded reinforcement structure under complex load conditions. The geometric constraint of the U-shaped plate's side plates perpendicular to the base plate, combined with the end plates sealing the ends of the U-shaped plate, forms a complete spatial force-bearing skeleton. When the load is transferred through the internal stiffening plates, the rectangular box can quickly diffuse the concentrated vertical load to the entire plane of the side plates and end plates, avoiding excessive stress accumulation in local locations, thereby greatly improving the fatigue life and ultimate bearing capacity of the structure.

[0026] 3) The template support welding reinforcement structure of this utility model combines the originally independent base plate, side plate, end plate, and internal stiffening plate together through welding. Compared with bolted or fastener connections, the welded joint has a much higher torque transmission capacity and eliminates slippage and gaps at the connection. When subjected to instantaneous load impact, the entire rectangular box can act as a unified elastic body to respond to force.

[0027] 4) The template support welding reinforcement structure of this utility model has pin holes that provide flexible installation positions. The preset pin holes serve as a precise assembly reference, enabling modular installation. This preset precision translates into extremely high assembly efficiency and installation consistency on the construction site. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the template support welding reinforcement structure in this utility model;

[0029] Figure 2 , Figure 3 These are schematic diagrams of the structural beam support template assembly of this utility model supporting a structural beam from different perspectives.

[0030] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0031] 1. U-shaped plate; 11. Base plate; 12. Side plate; 2. Guide tube; 3. Internal stiffening plate; 4. End plate; 5. Template support welded reinforcement structure; 6. Steel support pipe; 7. Angle profile; 8. Structural beam; 9. Matching template; 10. Pin hole. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0033] Reference Figure 1 The template support welding reinforcement structure includes a U-shaped plate 1, an end plate 4, an inner stiffening plate 3, and a guide tube 2.

[0034] The U-shaped plate 1 includes a base plate 11 and two side plates 12 fixed together. The base plate 11 and the two side plates 12 can be fixed together by welding or integral molding. The two side plates 12 are parallel to each other, and each side plate 12 is perpendicular to the base plate 11. Each side plate 12 is provided with a plurality of pin holes 10.

[0035] Two parallel end plates 4 are fixed on the U-shaped plate 1. Each end plate 4 is perpendicular to the side plate 12 and the base plate 11, and each end plate 4 is installed at one end of the U-shaped plate to seal the U-shaped plate. Each end plate 4 is provided with a plurality of pin holes 10. Each end plate 4 is welded to the base plate 11 and the two side plates 12. The U-shaped plate and the two end plates 4 together form a rectangular box. One end of the rectangular box is closed by the base plate 11, while the other end opposite to the base plate 11 is open.

[0036] The rectangular box contains two parallel inner stiffening plates 3. Each inner stiffening plate 3 is parallel to the end plate 4 and is welded to the base plate 11 and the two side plates 12. The inner stiffening plates 3 are preferably non-perforated plates, which have high strength and rigidity and are not prone to local deflection and plastic deformation.

[0037] The guide tube 2 is located between the two inner stiffening plates 3, the guide tube 2 is perpendicular to the base plate 11, and the guide tube 2 is welded to the base plate 11.

[0038] Because the rectangular box has multiple force transmission paths (working together through side plate 12, end plate 4, and internal stiffening plate 3), even if the force is uneven in some local areas due to construction factors, the structure can automatically redistribute the internal force through its internal structure, exhibiting extremely strong toughness and safety.

[0039] The template-supported welded reinforcement structure 5 utilizes precision welding in a factory to encapsulate complex reinforcement logic within a simple module. On the construction site, workers only need to use the pin holes 10 for quick connection, greatly simplifying the operation process and ensuring uniform construction quality. This high-rigidity template-supported welded reinforcement structure 5 can adapt to various structural beam 8 support scenarios with different spans and load requirements.

[0040] This invention, through the design of a rectangular box body and internal stiffening plate 3, not only optimizes the stress distribution at the stress points but also establishes a high-rigidity, highly stable, and easily standardized reinforcement module. This structural design greatly enhances the overall anti-instability capability of the formwork support system, providing a solid and reliable mechanical guarantee for building construction.

[0041] The template support welding reinforcement structure 5 is usually set at the bottom of the structural beam 8 with a width of 300mm to 500mm.

[0042] Furthermore, the substrate 11 and each of the side plates 12 are made of 6061-T6 aluminum alloy.

[0043] 6061-T6 aluminum alloy, a high-performance material subjected to precipitation hardening treatment, possesses extremely high yield strength and tensile strength. While ensuring that the welded reinforcement structure 5 for the formwork support can withstand the pressure of high-intensity concrete and construction loads, the 6061-T6 aluminum alloy material significantly reduces the overall weight of the welded reinforcement structure 5. This makes it easier and less strenuous for on-site construction personnel to handle, install, and dismantle the welded reinforcement structure 5, greatly improving the safety and efficiency of high-altitude operations.

[0044] Because of the excellent yield strength of 6061-T6 alloy, the base plate 11 and side plates 12 made of it can maintain excellent structural rigidity. When forming a rectangular box, this material can ensure that the box is not prone to elastic deformation under asymmetric lateral pressure, thereby ensuring the dimensional accuracy of the structural beam 8.

[0045] 6061-T6 aluminum alloy is renowned for its excellent weldability among aluminum alloys. The use of this material for the base plate 11 and side plates 12 ensures a strong metallurgical bond between the weld and the base material during TIG or MIG welding, reducing defects such as weld porosity and cracks. This is crucial for the constructed integrated rectangular enclosure, ensuring that all connection points maintain high strength even under long-term, high-frequency use. The welding process fuses the various 6061-T6 components together, creating a mechanically closed loop of equal strength between the U-shaped plate 1, end plate 4, and inner stiffening plate 3. This homogeneous welding method avoids connection fatigue problems caused by different thermal expansion coefficients of the materials, enhancing the overall structural integrity.

[0046] Furthermore, the centerline of the guide tube 2 passes through the center of the base plate 11. When the template support welding reinforcement structure 5 is used in actual construction, the steel support pipe 6 supports the template support welding reinforcement structure 5, and the guide tube 2 can coaxially guide the steel support pipe 6, enabling the steel support pipe 6 to be installed in a centered position. This alignment theoretically reduces eccentricity and effectively eliminates additional bending moments caused by load eccentricity. This ensures that the base plate 11 will not experience local warping or overturning moments during compression, greatly optimizing the stress state of the base plate 11.

[0047] Furthermore, each of the inner stiffening plates 3 is fitted to the outer wall of the guide tube 2. This fitting design allows the guide tube 2 to position the inner stiffening plates 3 during assembly, facilitating the assembly of the inner stiffening plates 3.

[0048] Furthermore, the thickness of the substrate 11 is 4mm to 6mm, and the thickness of the side plate 12 is 8mm to 10mm.

[0049] The thickness of the base plate 11 is set at 4mm~6mm to ensure that the U-shaped plate 1 has the necessary stiffness when bearing the load of the structural beam 8, while maintaining a certain degree of elasticity to effectively absorb the instantaneous impact during the initial stage of concrete pouring. The thickness of the side plate 12 is increased to 8mm~10mm, significantly improving its polar moment of inertia. In the entire template support welded reinforcement structure 5, the thicker side plate 12 helps to support the entire rectangular box body, preventing longitudinal bending or instability under heavy load conditions. This thickness gradient design allows the stress flow to be borne and transferred by the thick side plate 12 when the load is transferred from the center of the inner stiffening plate 3 to the side plate 12, avoiding abrupt stress changes at the connection of the base plate 11 and enhancing the structural robustness.

[0050] Furthermore, the end plate 4 has a width of 58mm~62mm, a length of 180mm~185mm, and a thickness of 8mm~10mm.

[0051] The width of 58mm~62mm and the length of 180mm~185mm ensure that the end plate 4 can cover and seal one end of the U-shaped plate 1. The end plate 4, with these dimensions, is welded together with the base plate 11 and side plates 12, forming a rectangular box with extremely high overall rigidity in spatial stress. This specific length-to-width ratio makes the end plate 4 a rigid end diaphragm of the box after welding, effectively constraining the displacement of the side plates 12 under compression and ensuring the geometric stability of the support structure under complex working conditions. The thickness of the end plate 4 is limited to 8mm~10mm, a parameter that plays a crucial mechanical support role in the entire template support welded reinforcement structure 5. The 8mm~10mm thickness gives the end plate 4 extremely strong bending resistance, preventing local deflection when bearing pressure from the matching template 9. The increased thickness provides sufficient area and thickness redundancy for deep-penetration welding with the base plate 11 and side plates 12, ensuring that the strength of the welded joint is sufficient to withstand vibration and impact loads during construction. The end plate 4, with its large surface area, evenly diffuses the concentrated edge stress to the entire cross section of the U-shaped plate 1, thus avoiding stress concentration at the connection point.

[0052] Furthermore, the width, length, and thickness of the inner stiffening plate 3 are the same as those of the end plate 4. The main difference between the inner stiffening plate 3 and the end plate 4 is that the end plate 4 has pin holes, while the inner stiffening plate 3 does not; the inner stiffening plate 3 is a hole-free structure. The fact that the inner stiffening plate 3 and the end plate 4 are identical in length, width, and thickness means that in the production process, raw materials (such as aluminum alloy sheets) can be prefabricated in batches, and then the end plate 4 needs to be perforated.

[0053] Furthermore, the diameter of the pin hole 10 is 16mm to 18mm. This diameter range ensures sufficient contact area between the pin hole 10 and the connecting pin. When the weight of the structural beam 8 and the load generated by concrete pouring are transferred to the base plate 11, side plate 12, or end plate 4 through the pin, the larger diameter can effectively disperse the concentrated stress applied to the hole wall by the pin. In the overall stress model of the structural beam support formwork assembly, the pin hole 10 serves as a node for shear force transfer, and the 16mm to 18mm setting allows it to be compatible with standard pins with corresponding shear strength. This matching ensures the connection strength between the formwork support welded reinforcement structure 5 and the matching formwork 9 and angle profile 7, effectively resisting horizontal lateral pressure and longitudinal impact during construction, and ensuring the stability of the support system.

[0054] Reference Figure 2 , Figure 3 According to another aspect of this utility model, a structural beam support template assembly is also provided, including the template support welding reinforcement structure 5 for supporting the structural beam 8, and also including a steel support pipe 6 and multiple matching templates 9.

[0055] For the matching template 9 used in contact with the beam side of the structural beam 8, the matching template 9 is fixedly connected to the end plate 4 of the template support welded reinforcement structure 5 by angle profiles 7 and pins. The angle profiles 7 can be made of angle aluminum. The matching template 9 is also provided with pin holes.

[0056] For the matching template 9 used to support the structural beam 8, the matching template 9 is fixedly connected to the end plate 4 of the template support welded reinforcement structure 5 by means of pins.

[0057] For the matching template 9, a conventional box-type structure template can be used, but the side wall needs to have openings; or, the matching template 9 can have the same structure as the template support welding reinforcement structure 5; or, the matching template 9 is based on the template support welding reinforcement structure 5 without the guide tube 2.

[0058] The end of the guide tube 2 away from the base plate 11 extends into the steel support tube 6. The guide tube 2 and the steel support tube 6 are coaxially arranged, and the end of the steel support tube 6 near the guide tube 2 abuts against the two inner stiffening plates 3 to support the template support welding reinforcement structure 5.

[0059] The structural beam support formwork assembly, through the joint support of the welded reinforcement structure 5 and the matching formwork 9, bears the weight of the structural beam 8, transferring the force to the welded and reinforced rectangular box, and then evenly transferring it to the steel support pipe 6 through the internal stiffening plate 3. This systematic integration ensures that the structural beam support formwork assembly has extremely high strength and stability during construction, effectively bearing the weight of the structural beam. By evenly transferring the load to the lower floor slab or supporting structure, the structural beam support formwork assembly ensures the stability of the structural beam throughout the construction process, avoiding structural deformation caused by load concentration.

[0060] For the matching formwork 9 on the beam side, angle profiles 7 and pins are used to fix and connect the end plate 4, ensuring the right angle accuracy and connection strength between the matching formwork 9 on the beam side and the formwork support welding reinforcement structure 5. For the matching formwork 9 supporting the structural beam 8, the end plate 4 is directly fixed and connected with pins, realizing modular quick docking and simplifying the installation process. This locking mechanism based on pin holes 10 and pins allows construction personnel to quickly perform installation and disassembly operations without complex molds or a lot of on-site processing, significantly shortening the construction cycle.

[0061] If the guide tube 2 is located at the center of the rectangular box, its design of extending into the steel support tube 6 provides precise guidance for the steel support tube 6, ensuring the consistency between the axis of the steel support tube 6 and the center of the template support welded reinforcement structure 5. The engagement depth between the guide tube 2 and the steel support tube 6 effectively restricts the lateral displacement of the support system containing the steel support tube 6, greatly improving the lateral stiffness of the support system containing the steel support tube 6.

[0062] The steel support pipe 6 acts directly on the reinforced, non-perforated internal stiffening plate 3, effectively resisting compressive stress through its thickness and welding strength. Together with the rectangular box, the internal stiffening plate 3 gives the structural beam support formwork assembly extremely high rigidity and load-bearing capacity, enabling it to withstand various complex loads during floor construction and ensuring the safety and stability of the floor structure.

[0063] Furthermore, the steel support pipe 6 and the guide pipe 2 are fitted with a clearance fit. The inner diameter of the steel support pipe 6 is basically the same as the outer diameter of the guide pipe 2, and the two form a tight constraint after being fitted together. This tight nesting relationship ensures that there is almost no radial displacement space between the guide pipe 2 and the steel support pipe 6 after the guide pipe 2 extends into the steel support pipe 6. When the structural beam support formwork assembly is subjected to complex horizontal shear forces or dynamic loads, it ensures that the steel support pipe 6 and the rectangular box can work together as a whole to bear the force, which significantly improves the lateral displacement resistance of the structural beam support formwork assembly.

[0064] When the end of the steel support pipe 6 near the guide pipe 2 abuts against the inner stiffening plate 3, the end cross-section of the steel support pipe 6 can completely and smoothly cover the load-bearing area of ​​the inner stiffening plate 3. Due to the matching diameter, the stress distribution on the contact surface is uniform, which can smoothly transfer the load to the lower floor slab or supporting structure.

[0065] The template support welded reinforcement structure 5 of this utility model, by welding two non-perforated inner stiffening plates 3 to the side plate 12 of the U-shaped plate 1, and having one end of the steel support pipe 6 directly fitted onto the guide round pipe 2 and supported on the non-perforated inner stiffening plate 3, ensures the strength and stability of the template support welded reinforcement structure 5 during construction. The steel support pipe 6 firmly supports the template support welded reinforcement structure 5 on the lower floor slab, forming a stable and reliable support structure. This utility model's template support welded reinforcement structure 5, employing a double-end plate and double inner stiffening plate reinforcement method, provides multiple layers of protection for the structure, making it more stable and reliable. The steel support pipe 6 abuts against the inner stiffening plate 3, making the erection of the structural beam support template assembly more stable, effectively preventing the template support welded reinforcement structure 5 from falling and the formwork from bursting during construction, further improving construction quality. The production process of this utility model's template support welded reinforcement structure 5 is simple and quick, effectively shortening the processing cycle, reducing labor costs, and simultaneously reducing safety hazards during on-site construction, providing a safer and more reliable working environment for construction personnel.

[0066] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A template support welded reinforcement structure, characterized in that, Includes U-shaped plate, end plate, internal stiffening plate and guide tube, wherein: The U-shaped plate includes a base plate and two side plates fixed together. The two side plates are parallel to each other, and each side plate is perpendicular to the base plate. Each side plate is provided with a plurality of pin holes. Two parallel end plates are fixed to the U-shaped plate. Each end plate is perpendicular to the side plate and the base plate, and each end plate is installed at one end of the U-shaped plate to seal the U-shaped plate. Each end plate is provided with multiple pin holes. Each end plate is welded to the base plate and the two side plates. The U-shaped plate and the two end plates together form a rectangular box. The rectangular box is provided with two parallel inner stiffening plates. Each inner stiffening plate is parallel to the end plate and is welded to the base plate and the two side plates. The guide tube is located between the two inner stiffening plates, the guide tube is perpendicular to the substrate, and the guide tube is welded to the substrate.

2. The template support welding reinforcement structure according to claim 1, characterized in that, The substrate and each of the side plates are made of 6061-T6 aluminum alloy.

3. The template support welding reinforcement structure according to claim 1, characterized in that, The centerline of the guide tube passes through the center of the substrate.

4. The template support welding reinforcement structure according to claim 1, characterized in that, Each of the inner stiffening plates is fitted to the outer wall of the guide tube.

5. The template support welding reinforcement structure according to claim 1, characterized in that, The thickness of the substrate is 4mm to 6mm, and the thickness of the side plate is 8mm to 10mm.

6. The template support welding reinforcement structure according to claim 1, characterized in that, The end plate has a width of 58mm~62mm, a length of 180mm~185mm, and a thickness of 8mm~10mm.

7. The template support welding reinforcement structure according to claim 6, characterized in that, The width, length, and thickness of the inner stiffening plate are the same as those of the end plate.

8. The template support welding reinforcement structure according to claim 1, characterized in that, The diameter of the pin hole is 16mm~18mm.

9. A structural beam support formwork assembly, comprising the formwork support welded reinforcement structure as described in any one of claims 1 to 8, characterized in that, It also includes steel support pipes and multiple matching formwork, among which: For the matching template used to contact the beam side of the structural beam, the matching template is fixedly connected to the end plate of the template support welded reinforcement structure by angle profiles and pins; For the matching formwork used to support the structural beam, the matching formwork is fixedly connected to the end plate of the formwork support welded reinforcement structure by pins; The end of the guide tube away from the substrate extends into the steel support tube. The guide tube and the steel support tube are coaxially arranged, and the end of the steel support tube near the guide tube abuts against the two inner stiffening plates to support the template support welding reinforcement structure.

10. The structural beam support formwork assembly according to claim 9, characterized in that, The steel support pipe and the guide tube are fitted with a clearance.

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