Cast-in-place floating slab formwork support

Abstract

The utility model discloses a cast-in-place floating plate formwork support, including formwork vertical support and shield pipe wall, the top of formwork vertical support is connected with the transverse support, and the one side of transverse support bottom is connected with formwork chuck, and the bottom of formwork vertical support one side and the one side of transverse support are jointly connected with formwork inclined support, and the bottom of shield pipe wall inner wall is installed with floating plate, the utility model discloses the formwork support of cable support sliding groove fixed of shield pipe wall prefabrication, need not extra drilling or welding, avoid destroying segment structure, save construction time, adopt the support structure simple of flat iron making, and installation and dismounting are convenient, and the construction efficiency is improved significantly, and the period of construction is shortened, formwork support can be used repeatedly, reduce the material waste of traditional cutting or destructive formwork removal, reduce construction cost, further avoid the slurry pollution of traditional water cutting, meet green construction requirement, improve the working environment.

Description

Technical Field

[0001] This utility model relates to the field of subway track technology, specifically to a cast-in-place floating slab formwork support. Background Technology

[0002] Cast-in-place floating slab track bed is a special track bed structure used to reduce vibration and noise generated during subway operation. Although this type of track bed has a good vibration reduction effect, some defects may occur during construction due to construction technology and technical issues. Cast-in-place floating slab track bed construction involves first pouring the foundation, then laying a retaining membrane, and then pouring the floating slab track bed on top of the retaining membrane. After pouring, once the specified strength is reached, the floating slab track bed is lifted up. The floating slab has an 80mm side. Traditional construction methods include: first, cutting the edge with a road cutter after overall pouring, which requires water cooling and generates a large amount of mud; second, fixing the formwork with large steel bars inside and outside before pouring, which makes formwork removal difficult and damages the formwork during removal, hindering its reuse.

[0003] Therefore, it is quite necessary to study a convenient formwork support. Currently, when constructing tunnel boring machines in various cities, cable support grooves are reserved for later installation to facilitate the installation of cable supports. This design utilizes the cable support grooves to install the formwork support, eliminating the need for drilling and allowing for rapid installation. This design uses existing 40mm flat iron materials from track engineering for fabrication, making it simple to manufacture and convenient to install and dismantle. Utility Model Content

[0004] The purpose of this utility model is to provide a cast-in-place floating slab formwork support, which has the advantages of convenient use and solves the problems of traditional construction methods, which involve cutting with a road cutter after overall casting, generating a large amount of mud; using large steel bars to fix the formwork inside and outside before casting, which makes it difficult to remove the formwork after casting and will damage the formwork when removing it, thus hindering the reuse of the formwork.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cast-in-place floating slab formwork support, comprising a vertical formwork support and a shield tunnel wall. The top of the vertical formwork support is connected to a horizontal support, and one side of the bottom of the horizontal support is connected to a formwork clamp. The bottom of one side of the vertical formwork support and one side of the horizontal support are connected to a formwork inclined support. A floating slab is installed at the bottom of the inner wall of the shield tunnel wall, and formwork is provided on both sides of the floating slab. The top of the formwork extends between the formwork clamp and the vertical formwork support. Several cable support grooves are provided on both sides of the inner wall of the shield tunnel wall. The inner wall of the cable support groove is filled with high-strength T-bolts. The top of the high-strength T-bolts penetrates the formwork inclined support and is threaded with a positioning nut. The top of the formwork inclined support is provided with a formwork support mounting hole for use with the high-strength T-bolts.

[0006] Preferably, the number of template vertical supports is several, and the several template vertical supports are evenly distributed on both sides of the shield tunnel wall.

[0007] Preferably, both ends of the top of the transverse support are connected to connecting blocks, and connecting bolts are provided through the two corresponding connecting blocks of the top of the front and rear transverse supports. Both ends of the connecting bolts are threaded with positioning nuts.

[0008] Preferably, a positioning component is provided through the template vertical support. The positioning component includes a positioning bolt, which is threaded through the template vertical support. A positioning screw hole for cooperating with the positioning bolt is opened on the top of one side of the template vertical support. A connecting sleeve is movably sleeved on one side of the positioning bolt through a bearing. A clamping plate is connected to one side of the connecting sleeve. A limit block is connected to the top of the clamping plate. A limit groove is opened at the bottom of the transverse support.

[0009] Preferably, the limiting block is located inside the limiting groove and slides in contact with the inner wall of the limiting groove. A storage cavity is provided on the other side of the template vertical support. The storage cavity is used in conjunction with the connecting sleeve. One side of the inner wall of the storage cavity is connected to the positioning screw hole. The top of the clamping plate slides in contact with the bottom of the transverse support.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This utility model utilizes a combination of template diagonal supports, template vertical supports, template clips, horizontal supports, shield tunnel wall, cable support grooves, floating slabs, positioning nuts, templates, and high-strength T-bolts. It offers advantages in ease of use. The template support is fixed using pre-fabricated cable support grooves on the shield tunnel wall, eliminating the need for additional drilling or welding, thus avoiding damage to the tunnel segment structure and saving construction time. The support structure, made of flat iron, is simple, easy to install and disassemble, significantly improving construction efficiency and shortening the construction period. The template support can be reused multiple times, reducing material waste caused by traditional cutting or destructive demolding, and lowering construction costs. It further avoids mud pollution from traditional water cutting, meeting green construction requirements and improving the working environment. Furthermore, it precisely fixes the template, ensuring 80mm verticality and flatness of the floating slab side, improving the appearance and structural quality of the concrete. Simultaneously, it utilizes existing 40mm flat iron from track engineering, making the material readily available and allowing for flexible design to adapt to different specifications of cable support grooves. It is safe and reliable, and the high stability of the template support reduces the risk of template displacement during pouring, ensuring construction safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ;

[0013] Figure 2This is a schematic diagram showing the coordination of the template diagonal support, template vertical support, template clip, and horizontal support structure of this utility model;

[0014] Figure 3 This utility model Figure 2 The left view;

[0015] Figure 4 This is a left view of the positioning component structure of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the present utility model. Figure 2 .

[0017] In the diagram: 1. Template diagonal support; 2. Connecting block; 3. Positioning component; 31. Positioning bolt; 32. Clamping plate; 33. Connecting sleeve; 34. Limiting block; 4. Template vertical support; 5. Template clamp; 6. Horizontal support; 7. Connecting bolt; 8. Positioning nut II; 9. Template bracket mounting hole; 10. Storage cavity; 11. Positioning screw hole; 12. Shield tunnel wall; 13. Cable bracket chute; 14. Floating plate; 15. Positioning nut I; 16. Template; 17. High-strength T-bolt. Detailed Implementation

[0018] Please see Figures 1-5 A cast-in-place floating slab formwork support includes a vertical formwork support 4 and a shield tunnel wall 12. A horizontal support 6 is connected to the top of the vertical formwork support 4. A formwork clamp 5 is connected to one side of the bottom of the horizontal support 6. A formwork inclined support 1 is connected to the bottom of one side of the vertical formwork support 4 and one side of the horizontal support 6. A floating slab 14 is installed at the bottom of the inner wall of the shield tunnel wall 12. Formwork 16 is provided on both sides of the floating slab 14. The top of the formwork 16 extends between the formwork clamp 5 and the vertical formwork support 4. Several cable support grooves 13 are provided on both sides of the inner wall of the shield tunnel wall 12. The inner wall of the cable support grooves 13 is filled with high-strength T-bolts 17. The top of the high-strength T-bolts 17 penetrates the formwork inclined support 1 and is threaded with a positioning nut 15. The top of the formwork inclined support 1 has a formwork support mounting hole 9 that mates with the high-strength T-bolts 17. The vertical formwork support 4, the horizontal support 6, the formwork clamp 5, and the formwork inclined support 1 together form a formwork support, and all the above components are made of flat iron.

[0019] There are several template vertical supports 4, and these template vertical supports 4 are evenly distributed on both sides of the shield tunnel wall 12;

[0020] Both ends of the top of the transverse support 6 are connected to connecting blocks 2. Connecting bolts 7 are installed between the corresponding connecting blocks 2 at the top of the front and rear transverse supports 6. Both ends of the connecting bolts 7 are threaded with positioning nuts 8. The front and rear template supports can be easily connected by the cooperation of connecting bolts 7, positioning nuts 8 and connecting blocks 2.

[0021] A positioning component 3 is provided through the template vertical support 4. The positioning component 3 includes a positioning bolt 31, which is threaded through the template vertical support 4. A positioning screw hole 11 is provided on the top of one side of the template vertical support 4 to cooperate with the positioning bolt 31. A connecting sleeve 33 is movably sleeved on one side of the positioning bolt 31 through a bearing. A clamping plate 32 is connected to one side of the connecting sleeve 33. A limit block 34 is connected to the top of the clamping plate 32. A limit groove is provided at the bottom of the transverse support 6. The template vertical support 4 can support the positioning bolt 31. Furthermore, with the cooperation of the positioning screw hole 11, the positioning bolt 31 can move to the left or right when it rotates. The movement of the clamping plate 32 can be limited by the cooperation of the limit block 34 and the limit groove, thereby improving the stability of the left and right movement of the clamping plate 32. One side of the clamping plate 32 is in contact with the template 16.

[0022] The limiting block 34 is located inside the limiting groove and slides in contact with the inner wall of the limiting groove. A storage cavity 10 is provided on the other side of the template vertical support 4. The storage cavity 10 works in conjunction with the connecting sleeve 33. One side of the inner wall of the storage cavity 10 communicates with the positioning screw hole 11. The top of the clamping plate 32 slides in contact with the bottom of the transverse support 6. The connecting sleeve 33 can be hidden and stored through the storage cavity 10.

[0023] During use, the prefabricated cable support grooves 13 on the shield tunnel wall 12 are used to fix the formwork support, eliminating the need for additional drilling or welding, thus avoiding damage to the tunnel segment structure and saving construction time. The support structure made of flat iron is simple, easy to install and disassemble, significantly improving construction efficiency and shortening the construction period. The formwork support can be reused multiple times, reducing material waste caused by traditional cutting or destructive demolding, and lowering construction costs. It further avoids mud pollution caused by traditional water cutting, meeting green construction requirements and improving the working environment. It also provides more precise fixation of the formwork 16, ensuring 80mm verticality and flatness of the floating slab 14 sides, improving the appearance and structural quality of the concrete. At the same time, it is made using existing 40mm flat iron from the track engineering, which is readily available and has a flexible design that can be adapted to different specifications of cable support grooves 13. It is safe and reliable, and the formwork support has high stability, reducing the risk of formwork displacement during the pouring process and ensuring construction safety.

[0024] Furthermore, to improve the stability of template 16, when template 16 enters between template clamp 5 and template vertical support 4, the forward-rotating positioning bolt 31 rotates and moves towards template 16, allowing clamp 32 to position template 16 and improve its stability. To connect multiple template supports, after installation, connecting bolts 7 can be used to pass through two opposing connecting blocks 2 on the front and rear transverse supports 6. Then, positioning nuts 8 are threaded onto both ends of the connecting bolts 7 to complete their positioning.

[0025] In summary, this cast-in-place floating slab formwork support, through the coordinated use of formwork diagonal support 1, formwork vertical support 4, formwork clip 5, horizontal support 6, shield tunnel wall 12, cable support slide 13, floating slab 14, positioning nut 15, formwork 16, and high-strength T-bolts 17, solves the problems of traditional construction methods, which involve cutting with a road cutter after overall casting, generating a large amount of mud; using large steel bars to fix the formwork internally and externally before casting; and the difficulty in demolding after casting, which damages the formwork and hinders its reuse.

Claims

1. A cast-in-place floating slab formwork support, comprising a formwork vertical support (4) and a shield tunnel wall (12), characterized in that: The top of the template vertical support (4) is connected to a horizontal support (6), and one side of the bottom of the horizontal support (6) is connected to a template clamp (5). The bottom of one side of the template vertical support (4) and one side of the horizontal support (6) are connected to a template inclined support (1). A floating plate (14) is installed at the bottom of the inner wall of the shield tube wall (12). Templates (16) are set on both sides of the floating plate (14). The top of the template (16) extends between the template clamp (5) and the template vertical support (4). Several cable bracket grooves (13) are opened on both sides of the inner wall of the shield tube wall (12). The inner wall of the cable bracket groove (13) is filled with high-strength T-bolts (17). The top of the high-strength T-bolts (17) penetrates the template inclined support (1) and is threaded with a positioning nut (15). The top of the template inclined support (1) is opened with a template bracket mounting hole (9) that is used in conjunction with the high-strength T-bolts (17).

2. The cast-in-place floating slab formwork support according to claim 1, characterized in that: The template vertical supports (4) are of several types, and the template vertical supports (4) are evenly distributed on both sides of the shield tunnel wall (12).

3. The cast-in-place floating slab formwork support according to claim 1, characterized in that: Both ends of the top of the transverse support (6) are connected to connecting blocks (2), and connecting bolts (7) are provided through the two corresponding connecting blocks (2) at the top of the front and rear transverse supports (6). Both ends of the connecting bolts (7) are threaded with positioning nuts (8).

4. The cast-in-place floating slab formwork support according to claim 1, characterized in that: A positioning component (3) is provided through the template vertical support (4). The positioning component (3) includes a positioning bolt (31). The positioning bolt (31) is threaded through the template vertical support (4). A positioning screw hole (11) for use with the positioning bolt (31) is opened on the top of one side of the template vertical support (4). A connecting sleeve (33) is movably sleeved on one side of the positioning bolt (31) through a bearing. A clamping plate (32) is connected to one side of the connecting sleeve (33). A limit block (34) is connected to the top of the clamping plate (32). A limit groove is opened at the bottom of the transverse support (6).

5. A cast-in-place floating slab formwork support according to claim 4, characterized in that: The limiting block (34) is located inside the limiting groove and slides in contact with the inner wall of the limiting groove. The other side of the template vertical support (4) is provided with a storage cavity (10). The storage cavity (10) is used in conjunction with the connecting sleeve (33). One side of the inner wall of the storage cavity (10) is connected to the positioning screw hole (11). The top of the clamping plate (32) slides in contact with the bottom of the transverse support (6).

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