A resting type steel platform suitable for atrium structure formwork support

Abstract

The utility model discloses a kind of shelving type shaped steel platform suitable for atrium structure template support, it is related to template support field.The utility model includes I-beam, it is fixed on the bottom edge beam by pre-buried anchor bolt, bolt bottom is provided with steel bar and beam bottom bar binding, I-beam top is locked by angle steel cover plate through fastening nut, gap is inserted into wooden wedge, I-beam is fully paved with wooden jumping board, end is fixed with iron wire, frame body base is installed on wooden jumping board, and it is bound by iron wire and I-beam, and base is located directly above I-beam, the utility model replaces floor support by suspended anchoring structure, avoids the material redundancy problem of traditional frame body from ground, reduces steel consumption and artificial cost, beam bottom steel bar and bolt welding synchronous enhancement high-altitude anti-overturning ability of pullout system, simultaneously, modular array design breaks through the limitation of traditional support and adapts to various atrium special hole size, and the construction mode of edge beam pre-buried anchoring shortens construction period, realizes efficient construction mode.

Description

Technical Field

[0001] This utility model relates to the field of template support, specifically a shelving steel platform suitable for supporting atrium structure templates. Background Technology

[0002] Formwork support systems are equipment that originated and have continuously evolved in building construction. They have become an indispensable and important part of construction operations. At present, most formwork support systems adopt ground-mounted formwork support systems. Ground-mounted steel platforms are rigid platform structures that use hot-rolled H-beams or other cross-section steel as the main load-bearing components and are assembled by welding or bolting.

[0003] In the construction of atrium openings, the existing traditional ground-mounted formwork support system requires workers to erect high-support scaffolding from the ground to meet the concrete pouring needs below the opening. This increases the amount of scaffolding used, as well as material and labor costs. Therefore, the inventors urgently need to design a shelving steel platform suitable for atrium structural formwork support to reduce resource waste in the construction of atrium openings. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a shelving steel platform suitable for supporting the formwork of atrium structures, so as to solve the technical problem of resource waste in the construction of suspended openings.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a support-type steel platform suitable for atrium structure template support, comprising an I-beam, with a side beam at the bottom of the I-beam, both ends of the I-beam being fixed to the side beam by anchor bolts, the anchor bolts being pre-embedded in the cast-in-place structural beam and having two reinforcing bars at the bottom resting on the bottom of the side beam and tied to the bottom reinforcing bars of the side beam, the top of the I-beam being covered with an angle steel cover plate and fastened to the anchor bolts by fastening nuts, and the gap between the I-beam and the angle steel cover plate being wedged tightly by wooden wedges, the upper surface of the I-beam being fully covered with wooden planks, the ends of the wooden planks being fixed to the I-beam by wire, a frame base being installed on the surface of the wooden planks and tied to the I-beam by wire passing through the wooden planks, and the installation position of the frame base being directly above the I-beam.

[0006] By adopting the above technical solutions, the innovative design of the I-beam suspended and anchored to the side beam completely avoids the full-height erection requirement of the traditional ground support system, significantly reducing the consumption of steel and labor. The pre-embedded anchor bolts and the binding of the steel bars at the bottom of the beam form a dual pull-out resistance mechanism, effectively resisting the buoyancy force during concrete pouring and ensuring the safety of high-altitude operations.

[0007] Furthermore, the anchor bolt has a U-shaped structure, with both ends vertically embedded in the side beam, and the bottom of the U-shape extending horizontally to the top of the I-beam.

[0008] By adopting the above technical solution, the anchor bolts of the U-shaped structure are installed by vertically pre-embedding them in the side beams and horizontally extending to the top of the I-beams. This precisely matches the shear force transmission characteristics of the cast-in-place beams. The vertical embedding depth ensures the anchoring strength, while the horizontal section directly supports the load of the I-beams.

[0009] Furthermore, the angle steel cover plate covers the top surface of the upper flange of the I-beam and is locked to the vertical section of the anchor bolt by a fastening nut.

[0010] By adopting the above technical solution, the installation structure of the angle steel cover plate covering the top surface of the upper flange of the I-beam increases the contact area and disperses the local compressive stress when the bolts are tightened, thus preventing the I-beam flange from plastic deformation or crushing failure due to concentrated stress.

[0011] Furthermore, the wooden wedges fill the gap between the web of the I-beam and the inner side of the U-shaped anchor bolt, and are continuously arranged along the length of the I-beam.

[0012] By adopting the above technical solution, the structure of continuously filling the gap between the web of the I-beam and the U-shaped inner side of the anchor bolt with wooden wedges eliminates the assembly tolerance gap of the steel structure, blocks the transmission path of micro-vibration caused by wind load, and effectively suppresses the risk of bolt fatigue fracture caused by high-frequency vibration.

[0013] Furthermore, the long side of the wooden plank is perpendicular to the length direction of the I-beam, and the spacing between adjacent wooden planks is less than the minimum support width of the frame base.

[0014] By adopting the above technical solution, the layout of laying the wooden planks with the long side perpendicular to the length of the I-beams allows the long side of the planks to span multiple I-beams to form a continuous support surface, which improves the disadvantage of local pressure on a single I-beam and avoids the risk of plank breakage under concentrated loads.

[0015] Furthermore, the wire binding position is located at the junction of the upper flange and the web of the I-beam, and at least two binding points are provided on each I-beam.

[0016] By adopting the above technical solution, the wire binding point is limited to the junction of the upper flange and the web of the I-beam, making full use of the maximum structural stiffness of this area, so that the binding force can be effectively transferred to the entire cross section of the I-beam, and avoiding local buckling in the weak area at the edge of the flange.

[0017] Furthermore, the mounting position of the frame base coincides with the central axis of the I-beam below.

[0018] By adopting the above technical solution, the installation position of the frame base is required to coincide with the central axis of the I-beam below, eliminating the additional bending moment caused by eccentric load, so that the pressure of the upright is completely converted into the axial compressive stress of the I-beam, giving full play to the compressive strength advantage of the steel and avoiding premature instability caused by bending moment coupling.

[0019] Furthermore, the reinforcing bars are arranged parallel to the bottom of the beam and welded to the bottom of the anchor bolts to form a pull-out anchoring system.

[0020] By adopting the above technical solution, the structure in which the reinforcing bars are arranged in parallel at the bottom of the beam and welded to the bottom of the anchor bolts disperses and transfers the pull-out force of the bolts to the main reinforcement network of the beam, avoiding local spalling damage caused by relying solely on the concrete bond force. This is especially suitable for the early construction stage when the concrete strength has not yet reached the required level.

[0021] In summary, the present invention has the following main advantages:

[0022] 1. This utility model replaces the ground support with a suspended anchoring structure, completely avoiding the material redundancy problem of traditional scaffolding erected from the ground, reducing steel consumption and labor costs. The pull-out resistance system of the bottom steel bars and bolt welding simultaneously enhances the high-altitude anti-overturning capacity. At the same time, the modular array design breaks through the height-to-width ratio limitation of traditional supports, adapting to various special opening sizes in the atrium. The construction method of pre-embedded anchoring of the side beams greatly shortens the construction period, realizing a highly efficient construction mode with zero scaffolding erection.

[0023] 2. This utility model ensures that the construction pressure is distributed to the I-beam without deviation through the whole-domain load transfer mechanism, eliminating the risk of instability caused by eccentric bending moment. The gap between the U-bolt and the wooden wedge blocks the vibration transmission path, suppressing fatigue fracture from the root. At the same time, the redundant safety protection system maintains the structural function in the event of single-point failure. The locking method of the angle steel cover plate covering the upper flange of the I-beam prevents the bolts from loosening, ensuring long-term reliability under dynamic working conditions such as strong wind and vibration. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram showing the connection between the frame base and the steel profile of this utility model;

[0026] Figure 3 This is a schematic diagram of the U-shaped bolt of this utility model.

[0027] In the diagram: 1. Side beam; 2. Frame; 3. I-beam; 4. Wooden plank; 5. Frame base; 6. Wire; 7. Angle steel cover plate; 8. Anchor bolt; 9. Fastening nut; 10. Wooden wedge; 11. Reinforcing bar. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In this embodiment:

[0030] A type of shelving steel platform suitable for supporting atrium structural formwork, such as Figure 1-3 As shown, the structure includes an I-beam 3, with a side beam 1 at its bottom. Both ends of the I-beam 3 are fixed to the side beam 1 by anchor bolts 8, which are embedded in the cast-in-place structural beam. Two reinforcing bars 11 are placed at the bottom of the side beam 1 and tied to its bottom reinforcement. Angle steel cover plates 7 cover the top of the I-beam 3 and are secured to the anchor bolts 8 with nuts 9. The gap between the I-beam 3 and the angle steel cover plates 7 is wedged tightly with wooden wedges 10. Wooden planks 4 cover the entire surface of the I-beam 3. The ends of the wooden planks 4 are fixed to the I-beam 3 with wires 6. A frame base 5 is installed on the surface of the wooden planks 4 and tied to the I-beam 3 with wires 6 passing through the planks. The installation position of 5 is directly above I-beam 3. The innovative design of I-beam 3 being suspended and anchored to the side beam 1 completely avoids the full-height erection requirement of traditional ground support systems, significantly reducing steel and labor consumption. The pre-embedded anchor bolts 8 and the binding of the reinforcing bars 11 to the bottom of the beam form a dual pull-out resistance mechanism, effectively resisting the buoyancy force during concrete pouring and ensuring the safety of high-altitude operations. At the same time, wooden planks 4 are fully laid on the upper surface of I-beam 3, and are installed in conjunction with the frame base 5 for forced alignment, ensuring that the construction load is evenly transferred to the bearing points of I-beam 3, eliminating the risk of instability caused by eccentric force. This combined structure provides a highly reliable support base for the construction of large-span openings in the atrium, and is especially suitable for the efficient construction of irregular structures.

[0031] See Figure 1 , Figure 2 , Figure 3 The anchor bolt 8 has a U-shaped structure, with both ends vertically embedded in the side beam 1 and the bottom of the U-shape extending horizontally to the top of the I-beam 3. The U-shaped anchor bolt 8 adopts the installation method of being vertically embedded in the side beam 1 and horizontally extending to the top of the I-beam 3, which precisely matches the shear force transmission characteristics of the cast-in-place beam. The vertical section embedding depth ensures the anchoring strength, and the horizontal section directly supports the load of the I-beam 3. At the same time, the design of the bottom of the U-shape spanning the I-beam 3 forms a three-dimensional surrounding fixation. Compared with unidirectional bolts, it can resist multi-directional vibration displacement, prevent lateral overturning accidents of high-altitude platforms, and improve the structural stability under dynamic working conditions.

[0032] See Figure 1 , Figure 2 , Figure 3Angle steel cover plate 7 covers the top surface of the upper flange of I-beam 3 and is locked to the vertical section of anchor bolt 8 by fastening nut 9. The installation structure of angle steel cover plate 7 covering the top surface of the upper flange of I-beam 3 increases the contact area and disperses the local compressive stress when the bolt is locked, preventing the flange of I-beam 3 from plastic deformation or crushing failure due to concentrated force. At the same time, the surface contact locking mode between angle steel cover plate 7 and the vertical section of anchor bolt 8 by fastening nut 9 is less likely to loosen than point contact fasteners. Even if the nut slightly loosens after long-term service, angle steel cover plate 7 can still maintain the pre-tight state through friction, which greatly extends the maintenance cycle and reduces the risk of high-altitude re-tightening operations.

[0033] See Figure 1 , Figure 2 , Figure 3 Wooden wedges 10 are filled in the gap between the web of the I-beam 3 and the inner side of the U-shaped anchor bolt 8, and are continuously arranged along the length of the I-beam 3. The structure of the wooden wedges 10 continuously filling the gap between the web of the I-beam 3 and the inner side of the U-shaped anchor bolt 8 eliminates the assembly tolerance gap of the steel structure, blocks the transmission path of micro-vibration caused by wind load, and effectively suppresses the risk of bolt fatigue fracture caused by high-frequency vibration. At the same time, the wooden wedges 10 are densely arranged along the length of the I-beam 3 to form a distributed elastic support band. When the I-beam 3 is bent and undergoes slight deflection, the wooden wedges 10 absorb energy through their own compression deformation, avoid rigid collisions that cause damage to the anchoring system, and improve the durability of the platform under dynamic load conditions.

[0034] See Figure 1 , Figure 2 , Figure 3 The long side of the wooden plank 4 is perpendicular to the length of the I-beam 3, and the spacing between adjacent wooden planks 4 is less than the minimum support width of the frame base 5. The layout of laying the wooden planks 4 with the long side perpendicular to the length of the I-beam 3 allows the long side of the plank to span multiple I-beams 3 to form a continuous support surface, which improves the disadvantage of local pressure on a single I-beam 3 and avoids the risk of plank breakage under concentrated load. At the same time, the spacing between adjacent wooden planks 4 is less than the minimum support width of the frame base 5, ensuring that each frame base 5 is in contact with at least two wooden planks 4, preventing stress concentration caused by the unsupported edge of the base, providing a rigid base for the formwork support frame, eliminating the risk of collapse and simplifying the construction layout process.

[0035] See Figure 1 , Figure 2 , Figure 3The binding points of wire 6 are located at the junction of the upper flange and the web of the I-beam 3, and at least two binding points are set on each I-beam 3. The binding points of wire 6 are limited to the junction of the upper flange and the web of the I-beam 3, which makes full use of the maximum structural stiffness of this area and effectively transfers the binding force to the entire cross section of the I-beam 3. This avoids local buckling in the weak area at the edge of the flange. At the same time, the redundant design of at least two binding points of wire 6 on each I-beam 3 can maintain the system function through the remaining binding points in the event of single-point failure, which significantly improves the safety margin and ensures emergency reliability under strong winds or sudden impact loads.

[0036] See Figure 1 , Figure 2 , Figure 3 The installation position of the frame base 5 coincides with the central axis of the I-beam 3 below, which forces the installation position of the frame base 5 to coincide with the central axis of the I-beam 3 below, eliminating the additional bending moment caused by eccentric load, so that the pressure of the upright is completely converted into the axial compressive stress of the I-beam 3, giving full play to the compressive strength advantage of the steel, avoiding premature instability caused by bending moment coupling, and at the same time, this alignment accuracy control realizes the shortest load transmission path, ensuring that the transmission chain of construction live load through frame 2, frame base 5, wooden plank 4, I-beam 3 and side beam 1 has no deflection loss, thus fundamentally optimizing the structural mechanical efficiency.

[0037] See Figure 3 The steel bars 11 are arranged in parallel at the bottom of the beam and welded to the bottom of the anchor bolts 8 to form a pull-out anchoring system. The structure of the steel bars 11 arranged in parallel at the bottom of the beam and welded to the bottom of the anchor bolts 8 disperses the pull-out force of the bolts to the main reinforcement network of the beam, avoiding local spalling failure caused by relying solely on the concrete bond force. This is especially suitable for the early construction stage when the concrete strength has not reached the standard. At the same time, the parallel arrangement of the steel bars 11 forms a distributed anchoring grid, which significantly expands the range of pull-out force. Even if a single anchor bolt 8 fails unexpectedly, the surrounding welded nodes can still bear the load redistribution, providing a failure protection mechanism for the atrium cantilever platform under disaster conditions.

[0038] The implementation principle of this embodiment is as follows: First, U-shaped anchor bolts 8 are vertically embedded in the cast-in-place side beam 1. The bottom is tied and welded to the bottom reinforcement of the beam by two parallel steel bars 11 to form an anti-pull-out system. The two ends of the I-beam 3 are placed on the horizontal section of the anchor bolts 8. After covering with angle steel cover plates 7, they are locked with fastening nuts 9. Wooden wedges 10 are inserted into the gap between the web of the I-beam 3 and the U-shaped inner side of the anchor bolts 8 to eliminate the gap. Then, wooden planks 4 are fully laid on the I-beam 3. The long side of the planks is perpendicular to the I-beam 3 and the spacing is less than the support width of the frame base 5. The ends of the wooden planks 4 are fixed to the junction of the flange and web of the I-beam 3 by iron wires 6. Finally, the central axis of the frame base 5 is precisely aligned with the I-beam 3 below, and the wooden planks 4 are tied and fixed to the I-beam 3 by iron wires 6, thus completing the erection of the formwork frame 2 without ground support.

[0039] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A shelving steel platform suitable for supporting atrium structural formwork, characterized in that: The structure includes an I-beam (3), with a side beam (1) at the bottom of the I-beam (3). Both ends of the I-beam (3) are fixed to the side beam (1) by anchor bolts (8). The anchor bolts (8) are embedded in the cast-in-place structural beam and have two reinforcing bars (11) at the bottom, which rest on the bottom of the side beam (1) and are tied to the bottom reinforcing bars of the side beam (1). The top of the I-beam (3) is covered with an angle steel cover plate (7) and fastened to the anchor bolts (8) by fastening nuts (9). The gap between the I-beam (3) and the angle steel cover plate (7) is wedged tightly by wooden wedges (10). The upper surface of the I-beam (3) is fully covered with wooden planks (4). The ends of the wooden planks (4) are fixed to the I-beam (3) by iron wires (6). The frame base (5) is installed on the surface of the wooden planks (4) and is tied to the I-beam (3) by iron wires (6) passing through the wooden planks (4). The installation position of the frame base (5) is directly above the I-beam (3).

2. The shelving steel platform for atrium structure formwork support according to claim 1, characterized in that: The anchor bolt (8) is a U-shaped structure with its two ends vertically embedded in the side beam (1) and the bottom of the U-shape extending horizontally to the top of the I-beam (3).

3. The shelving steel platform for atrium structure formwork support according to claim 1, characterized in that: The angle steel cover plate (7) covers the top surface of the upper flange of the I-beam (3) and is locked to the vertical section of the anchor bolt (8) by the fastening nut (9).

4. The shelving steel platform for atrium structure formwork support according to claim 1, characterized in that: The wooden wedges (10) fill the gap between the web of the I-beam (3) and the U-shaped inner side of the anchor bolt (8), and are arranged continuously along the length of the I-beam (3).

5. The shelving steel platform for atrium structure formwork support according to claim 1, characterized in that: The long side of the wooden plank (4) is perpendicular to the length of the I-beam (3), and the distance between adjacent wooden planks (4) is less than the minimum support width of the frame base (5).

6. The shelving steel platform for atrium structure formwork support according to claim 1, characterized in that: The binding position of the wire (6) is located at the junction of the upper flange and the web of the I-beam (3), and at least two binding points are provided on each I-beam (3).

7. The shelving steel platform for atrium structure formwork support according to claim 1, characterized in that: The mounting position of the frame base (5) coincides with the central axis of the I-beam (3) below.

8. The shelving steel platform for atrium structure formwork support according to claim 1, characterized in that: The reinforcing bars (11) are arranged in parallel at the bottom of the beam and welded to the bottom of the anchor bolts (8) to form a pull-out anchoring system.

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