Steel structure foundation platform for formwork supporting system
By designing a steel structure foundation platform for deep foundation pit projects, the problem of inability to erect a formwork support frame before the backfill is completed is solved, and the effect of simplifying the process, controlling the construction period, reducing costs and improving construction safety is achieved.
Patent Information
- Application Number
- CN202421511936.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-06-28
AI Technical Summary
In deep foundation pit projects, the formwork support frame cannot be erected before the backfill is completed, resulting in cumbersome processes, long construction periods and high costs.
A steel structure foundation platform for formwork support system is designed, including steel platform and oblique struts. The steel platform can slide and connect to the wall through embedded parts to build a formwork support frame.
It is achieved that the main structure is not affected by the inability to form the foundation during the construction stage, the process is simplified, the construction period is controlled, the cost is reduced, and the construction safety and environmental protection are improved.
Smart Images
Figure CN222936387U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of foundation treatment construction of the formwork support system for cast-in-situ concrete structures. Background Art
[0002] With the accelerating urbanization in China, deep foundation pit projects and high formwork support projects in building construction projects emerge in an endless stream. According to relevant specifications, the underground structure must form a closed structure around and the earthwork backfilling construction should be carried out symmetrically and evenly. In the actual construction process, it is often encountered that some main components are located in the area of backfilled earthwork. Before the backfilled earthwork is completed, it is impossible to normally erect the formwork support frame on the ground. The usual practice is to suspend the construction of the upper main structure, wait for the completion of the foundation pit backfilled earthwork, then harden the ground, and then erect the formwork support frame of the first-floor main structure. This method has cumbersome procedures, a long construction period, a relatively large height of the support frame erection, and high labor and material costs for the ultra-high scaffolding. Summary of the Invention
[0003] Based on the above disadvantages, the utility model provides a steel platform foundation device for the formwork support system, which can be not affected by the inability to form the foundation during the main structure construction stage and can overcome the deficiencies of the prior art.
[0004] The technical solution of the utility model is as follows:
[0005] A steel structure foundation platform for the formwork support system includes a steel platform 1 and diagonal braces 2. The steel platform 1 includes a first-section steel platform 11 and a second-section steel platform 12, and the second-section steel platform 12 can slide along the chutes 13 on both sides of the first-section steel platform 11; the diagonal braces 2 are divided into a first diagonal brace 21 and a second diagonal brace 22. The root of the first-section steel platform 11 is connected to the first group of embedded parts 4 on the wall, the distal end of the first-section steel platform 11 is connected to the second group of embedded parts 4 on the wall through the first diagonal brace 21, and the distal end of the second-section steel platform 12 is connected to the third group of embedded parts 4 on the wall through the second diagonal brace 22.
[0006] Pads 6 are laid on the first-section steel platform 11, and the upper surfaces of the pads 6 are flush with the upper surface of the second-section steel platform 12. I-beams 5 are laid on the upper surfaces of the pads 6 and the second-section steel platform 12, and the formwork support frame 8 is erected on the I-beams 5.
[0007] The embedded parts 4 include embedded anchor bars 41 and embedded anchor plates 42. The embedded anchor bars 41 are embedded in the reinforced concrete structure 7, and the embedded anchor plates 42 are exposed from the wall surface of the reinforced concrete structure 7.
[0008] There are lifting lugs 14 on the steel platform 1.
[0009] The overlapping part of the first steel platform 11 and the second steel platform 12 is provided with bolt fixing holes 15 arranged in a whole row, and the second steel platform 12 is fixed by matching bolts with the upper and lower two bolt fixing holes 15.
[0010] The second steel platform 12 and the second diagonal brace 22 are hinged. The second diagonal brace 22 is inserted into the sleeve, and the insertion length is fixed by bolts. The sleeve is hinged on the mounting seat, and the mounting seat is fixed on the third group of embedded parts 4.
[0011] The beneficial effects of the utility model are as follows:
[0012] 1. The main structure is not affected by the backfill operation, and the formwork support does not take the ground as the foundation. By setting the steel platform foundation device, the formwork support frame of the main structure can be directly erected on the steel platform, with simple processes and controllable construction periods;
[0013] 2. The steel platform foundation is assembled integrally on the ground and then hoisted as a whole, minimizing the high-altitude welding operation to the greatest extent and ensuring safety.
[0014] 3. The steel structure embedded parts will not damage the main structure, and the weld quality is inspected before applying the load, ensuring quality.
[0015] 4. After the steel structure single components are removed, they can be reused, and basically no waste will be generated, which is green and environmentally friendly.
[0016] 5. The utility model has a simple structure, ingenious design, convenient operation, the length of the steel platform can be adjusted according to the actual situation, the construction method is concise and efficient, and it is especially applicable when the formwork support foundation cannot be formed, effectively solving the problem of the formwork support foundation. Description of the Drawings
[0017] Figure 1 It is a schematic diagram of the main structure of the steel structure foundation platform.
[0018] Figure 2 It is a schematic diagram after the steel structure foundation platform is completely erected.
[0019] Figure 3 It is a schematic diagram of the formwork support system erected on the steel structure foundation platform.
[0020] Figure 4 It is for Figure 3 partial enlarged view of
[0021] Figure 5 It is the front view of the embedded part.
[0022] Figure 6 It is the side view of the embedded part.
[0023] Figure 7 It is the side view of Embodiment 2.
[0024] In the attached drawings: 1 is a steel platform, 11 is the first section of the steel platform, 12 is the second section of the steel platform, 13 is a chute, 14 is a lifting lug, 15 is a screw fixing hole, 2 is a diagonal brace, 21 is the first diagonal brace, 22 is the second diagonal brace, 3 is a hinge, 4 is a pre-embedded part, 41 is a pre-embedded anchor bar, 42 is a pre-embedded anchor plate, 5 is an I-shaped steel, 6 is a cushion block, 7 is a reinforced concrete structure, and 8 is a formwork support frame. Detailed implementation method
[0025] To make the above-mentioned objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further introduced below in conjunction with the attached drawings and specific embodiments:
[0026] Embodiment 1: When pouring the lower concrete, three groups of pre-embedded parts 4 (the first group of pre-embedded parts, the second group of pre-embedded parts, and the third group of pre-embedded parts from top to bottom) are buried in the reinforced concrete structure 7. The pre-embedded part 4 is composed of a pre-embedded anchor bar 41 and a pre-embedded anchor plate 42, and is usually welded by perforation. During installation, it should be firmly fixed on the wall column steel bars, and the pre-embedded anchor plate 42 should be flush with the inner wall of the formwork. Usually, the anchor plate should be more than 200 mm larger than the steel section, the number of anchor bars should be no less than 6, the horizontal section length should be no less than 450 mm, and the end bent anchor part should be less than 100 mm. During installation, the pre-embedded anchor plate 42 is flush with the lower structure formwork to prevent covering the anchor plate during concrete pouring.
[0027] The main truss of the steel platform is composed of a steel platform 1 and a diagonal brace 2. The steel platform 1 includes the first section of the steel platform 11 and the second section of the steel platform 12. The second section of the steel platform 12 can slide along the chutes 13 on both sides of the first section of the steel platform 11; the diagonal brace 2 is divided into the first diagonal brace 21 and the second diagonal brace 22. The root of the first section of the steel platform 11 is welded to the first group of pre-embedded parts 4 on the wall. The inclination angle of the diagonal brace 2 is between 45° and 60°. Each steel platform has at least 2 main trusses, and the main trusses are welded and connected by a locking beam. The steel platform 1 is provided with lifting lugs 14. The lifting lugs 14 are made of round steel, and the diameter should be determined through calculation to ensure that the bearing capacity during hoisting can meet the requirements. It should be noted that the lifting lugs 14 should not be unhooked during the welding process between the steel platform 1 and the pre-embedded parts.
[0028] The distal end of the first section of the steel platform 11 is connected to the second group of pre-embedded parts 4 on the wall through the first diagonal brace 21. The overlapping part of the first section of the steel platform 11 and the second section of the steel platform 12 is provided with bolt fixing holes 15 arranged in a whole row. The extension length of the second section of the steel platform 12 is fixed by bolts and the upper and lower two bolt fixing holes 15. Then, the distal end of the second section of the steel platform 12 is connected to the third group of pre-embedded parts 4 on the wall through the second diagonal brace 22. Both ends of the two support rods are fixed by welding.
[0029] There is a certain height difference between the upper surfaces of the first steel platform 11 and the second steel platform 12. Therefore, a cushion block 6 is arranged on the upper surface of the first steel platform 11 to ensure flatness. Finally, an I-beam 5 is laid on the upper surfaces of the cushion block 6 and the second steel platform 12, and the formwork support frame 8 is built on the I-beam 5.
[0030] Embodiment 2: As Figure 7 , Embodiment 2 changes the installation method of the second diagonal brace 22 on the basis of Embodiment 1: The upper end of the second diagonal brace 22 is hinged to the second steel platform 12, the lower end of the second diagonal brace 22 is inserted into the sleeve, and the insertion depth is controlled by the bolts on the side of the sleeve. The sleeve is hinged on the mounting seat, and the mounting seat is welded to the third group of embedded parts 4. The advantage of this structure is that the extended length of the second steel platform 12 can be adjusted at any time.
[0031] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or replacements can be made, which should all be regarded as belonging to the protection scope of the present invention.
Claims
1. A steel structure foundation platform for a formwork support system, comprising a steel platform (1) and diagonal braces (2), characterized in that: The steel platform (1) comprises a first section steel platform (11) and a second section steel platform (12), wherein the second section steel platform (12) can slide along the slide grooves (13) on both sides of the first section steel platform (11); the diagonal brace (2) is divided into a first diagonal brace (21) and a second diagonal brace (22), the root of the first section steel platform (11) is connected to a first group of embedded parts (4) on the wall, the distal end of the first section steel platform (11) is connected to a second group of embedded parts (4) on the wall through the first diagonal brace (21), and the distal end of the second section steel platform (12) is connected to a third group of embedded parts (4) on the wall through the second diagonal brace (22).
2. The steel structure foundation platform for the formwork support system according to claim 1, characterized in that: A cushion block (6) is laid on the first steel platform (11), the upper surface of the cushion block (6) is flush with the upper surface of the second steel platform (12), an I-shaped steel (5) is laid on the upper surfaces of the cushion block (6) and the second steel platform (12), and a formwork support frame (8) is built on the I-shaped steel (5).
3. The steel structure foundation platform for the formwork support system according to claim 2, characterized in that: The embedded part (4) comprises embedded anchor bars (41) and embedded anchor plates (42); the embedded anchor bars (41) are embedded in the reinforced concrete structure (7); and the embedded anchor plates (42) are exposed from the wall surface of the reinforced concrete structure (7).
4. The steel structure foundation platform for the formwork support system according to claim 1, characterized in that: The steel platform (1) is provided with lifting lugs (14).
5. The steel structure foundation platform for the formwork support system according to claim 1, characterized in that: The overlapping portion of the first steel platform (11) and the second steel platform (12) is provided with bolt fixing holes (15) arranged in a row, and the second steel platform (12) is fixed by bolts and the upper and lower bolt fixing holes (15).
6. The steel structure foundation platform for the formwork support system according to any one of claims 1 to 5, characterized in that: The second steel platform (12) is hinged to the second diagonal brace (22).
7. The steel structure foundation platform for the formwork support system according to claim 6, characterized in that: The second diagonal brace (22) is inserted into the sleeve and the insertion length is fixed by bolts. The sleeve is hinged on the mounting seat, and the mounting seat is fixed on the third group of embedded parts (4).