A formwork trolley for diaphragm wall guide walls in open-cut subway stations and its usage method

Abstract

This invention discloses a formwork trolley and its usage method for diaphragm wall guide walls in open-cut subway stations, belonging to the field of diaphragm wall guide wall construction technology. It includes a support mechanism with right-angled formwork mechanisms symmetrically arranged on both sides. The support mechanism and the formwork mechanisms are connected by a connecting frame, which is equipped with a vibration curing mechanism. The formwork mechanism includes a vertically arranged first guide wall formwork, one end of which is horizontally connected to a second guide wall formwork. The support mechanism includes two horizontally arranged trolley support plates connected by a first telescopic rod. Multiple second telescopic rods are vertically connected to the bottom of the trolley support plates, and the sides of the second telescopic rods are connected to the second guide wall formwork via the connecting frame. The vibration curing mechanism includes two first vibration units, a second vibration unit, a telescopic sleeve, a third telescopic rod, and curing components. This invention facilitates the installation and adjustment of formwork for diaphragm wall guide wall pouring, improving construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of diaphragm wall and guide wall construction technology, specifically to a formwork trolley and its usage method for diaphragm wall and guide wall construction in open-cut subway stations. Background Technology

[0002] Currently, in the construction of open-cut subway stations, when constructing diaphragm walls and guide walls, the diaphragm walls and guide walls generally adopt right-angled, i.e., "┓┏" shaped integral reinforced concrete structures. Before pouring, when setting up the formwork, the support system is mostly a "ladder-shaped" frame formed by welding formwork timber and steel bars. After pouring, concrete cuboid blocks are needed as temporary internal supports. It is understandable that this method wastes construction materials and increases construction costs.

[0003] Furthermore, after pouring the diaphragm wall and guide wall, a long curing period is required. On-site curing is usually carried out by sprinkling water and covering with cloth, which wastes water resources and leads to a dirty and messy construction site. In winter, when the temperature is low, the water is prone to freezing, which will seriously delay the construction period. In addition, when pouring the diaphragm wall and guide wall, workers usually use hand-held mixing rods to mix the materials. This method cannot mix the materials thoroughly, resulting in inconsistent quality of the finished product. It is also time-consuming and labor-intensive. It is clear that traditional operation methods can no longer meet the requirements of modern production and efficiency.

[0004] Therefore, how to design and provide a formwork trolley for diaphragm wall guide walls in open-cut subway stations and its usage method to improve construction efficiency and reduce construction costs has become an urgent technical problem to be solved in the field of diaphragm wall guide wall construction technology. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a formwork trolley and its usage method for diaphragm wall guide walls in open-cut subway stations. This facilitates the installation and adjustment of formwork for diaphragm wall guide wall pouring, and allows for easy formwork removal and rapid operation, improving construction efficiency, reducing construction time, and enabling timely maintenance of the working wall surface without the trolley moving. This effectively ensures the quality of the concrete structure poured for the guide wall. Furthermore, the vibrating working surface is designed with an insert-attached hybrid structure, resulting in greater vibration efficiency, a wider vibration range, and better mixture forming effect.

[0006] The technical solution of the present invention is as follows:

[0007] In a first aspect of the invention, a formwork trolley for a guide wall of a diaphragm wall in an open-cut subway station is provided, including a support mechanism, with right-angled formwork mechanisms symmetrically arranged on both sides of the support mechanism, the support mechanism and the formwork mechanisms being connected by a connecting frame, and a vibration curing mechanism being provided on the connecting frame;

[0008] The template mechanism includes a vertically arranged first guide wall template, one end of which is horizontally connected to a second guide wall template, and end plates are provided on both vertical sides of the first guide wall template. The end plates are perpendicular to both the first guide wall template and the second guide wall template.

[0009] The support mechanism includes two horizontally arranged trolley support plates, which are connected by a first telescopic rod. Multiple second telescopic rods are vertically connected to the bottom of the trolley support plates, and the sides of the second telescopic rods are connected to the second guide wall template through a connecting frame.

[0010] The vibration curing mechanism includes two first vibration units, a second vibration unit, a telescopic sleeve, a third telescopic rod, and a curing component. One end of each of the two first vibration units is connected to a connecting frame, and the other end of each of the two first vibration units is hinged to the telescopic sleeve. The other end of the telescopic sleeve is connected to the third telescopic rod, and the front end of the third telescopic rod is connected to the second vibration unit. The curing component is provided on the side of the telescopic sleeve.

[0011] In some embodiments of the present invention, the bottom of the first guide wall template is provided with an embedded plate, which is disposed in the guide wall groove.

[0012] In some embodiments of the present invention, the top of the first guide wall template is provided with a slot window, and the surface of the slot window is provided with a flexible door curtain.

[0013] In some embodiments of the present invention, the top of the first guide wall template is provided with a plurality of lifting rings.

[0014] In some embodiments of the present invention, a plurality of second telescopic rods are vertically connected to the bottom of the trolley support plate, and the bottom of the second telescopic rods is provided with casters.

[0015] In some embodiments of the present invention, a first controller is provided on the side of the second telescopic rod; a plurality of connecting blocks are also evenly distributed on the side of the second telescopic rod, and the plurality of connecting blocks are connected to the connecting frame.

[0016] In some embodiments of the present invention, the vibration curing mechanism is fixedly connected to the top of the connecting frame by a support seat, and enters the cavity between the first guide wall template and the guide wall binding steel frame through the slot window of the template mechanism; the second vibration unit is provided with multiple vibration devices inside.

[0017] In some embodiments of the present invention, the trolley support plate is composed of a telescopic cylinder block and a steam generating block fixedly connected together; the curing component includes a ventilation pipe, a second controller and an atomizing nozzle, the steam generating block is connected to the ventilation pipe through a curing hole, and the other end of the ventilation pipe is connected to the atomizing nozzle.

[0018] In some embodiments of the present invention, a second controller is provided on the side of the ventilation duct, and a temperature and humidity detection unit is provided on the side of the atomizing nozzle.

[0019] In a second aspect of the invention, a method for using a formwork trolley for a guide wall of a diaphragm wall in an open-cut subway station is provided, comprising:

[0020] Step S1: Excavate the guide wall trench and tie the reinforcing bars along the guide wall trench;

[0021] Step S2: Assemble the template trolley and place it into the guide wall groove using lifting rings;

[0022] Step S3: Apply a release agent to the surface of the second guide wall template on the template trolley and adjust the opening and closing of the second guide wall template;

[0023] Step S4: Adjust the spacing between the second guide wall templates, install the end caps, pour concrete, and start the vibration curing mechanism;

[0024] Step S5: Use the curing component to spray high-temperature steam to accelerate concrete consolidation, reduce the spacing between the second guide wall templates, move the template trolley to the next pouring position, and repeat steps S3 and S4.

[0025] One or more technical solutions of the present invention have the following beneficial effects:

[0026] The present invention provides a formwork trolley and its method for use in the construction of diaphragm wall guide walls in open-cut subway stations. It facilitates the installation and adjustment of formwork for diaphragm wall guide wall pouring, and enables formwork dismantling and rapid operation, thereby improving construction efficiency, reducing construction period, and enabling timely maintenance of the working wall surface without moving the trolley. This effectively ensures the quality of the concrete structure of the guide wall pouring. Moreover, the vibrating working surface is set as an insert-attached hybrid structure, which has the advantages of large vibration effect, wider vibration range, and better mixture forming effect.

[0027] This invention facilitates the installation and adjustment of formwork for diaphragm wall guide wall casting, thereby adapting to the construction of guide walls of different sizes. It also facilitates formwork removal, allowing the formwork for diaphragm wall guide wall casting to be easily moved to the next casting position, improving construction efficiency and reducing construction period.

[0028] This invention enables timely maintenance without moving the equipment, thereby effectively ensuring the quality of the concrete structure of the guide wall. It solves the problem of untimely maintenance after concrete demolding in the existing guide wall construction process, and quickly achieves concrete consolidation, thus improving the quality of the finished product.

[0029] This invention enables the vibratory working surface to be configured as an insert-attached hybrid structure, ensuring that all positions on the working surface except for the rigid connection points can vibrate during vibration. The excitation force reaches its maximum value at the middle installation point of the vibratory element, thereby enabling vibration of the entire vibratory working surface. This results in the characteristics of high vibration efficiency, wider vibration range, and better mixture forming effect. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a formwork trolley for a diaphragm wall guide wall in an open-cut subway station, provided in Embodiment 1 of the present invention.

[0031] Figure 2 This is a schematic diagram of the template mechanism provided in Embodiment 1 of the present invention;

[0032] Figure 3 This is a schematic diagram of the support mechanism provided in Embodiment 1 of the present invention;

[0033] Figure 4 This is a schematic diagram of the connecting frame structure provided in Embodiment 1 of the present invention;

[0034] Figure 5 This is a schematic diagram of the end cap structure provided in Embodiment 1 of the present invention;

[0035] Figure 6 This is a schematic diagram of the vibration curing mechanism provided in Embodiment 1 of the present invention.

[0036] The components include: 1. Template mechanism; 2. Support mechanism; 3. Steam generating block; 4. Curing hole; 5. First telescopic rod; 6. Connecting block; 7. First controller; 8. Second telescopic rod; 9. Casters; 10. Telescopic cylinder block; 11. Lifting ring; 12. First guide wall template; 13. Slot window; 14. Flexible curtain; 15. Second guide wall template; 16. Embedded plate; 17. End plate; 18. Connecting frame; 19. Vibration curing mechanism; 20. Fixing hole; 21. Moving pad; 22. Support seat; 23. First vibration unit; 24. Ventilation pipe; 25. Second controller; 26. Atomizing nozzle; 27. Telescopic sleeve; 28. Third telescopic rod; 29. ​​Connecting seat; 30. Second vibration unit. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0038] Example 1

[0039] In a typical embodiment of the present invention, such as Figure 1-6As shown, a formwork trolley for the guide wall of the diaphragm wall of an open-cut subway station is proposed, including a support mechanism 2. Right-angled formwork mechanisms 1 are symmetrically arranged on both sides of the support mechanism 2. The support mechanism 2 and the formwork mechanism 1 are connected by a connecting frame 18. A vibration curing mechanism 19 is provided on the connecting frame 18.

[0040] The template mechanism 1 includes a vertically arranged first guide wall template 12, one end of which is horizontally connected to a second guide wall template 15. End plates 17 are provided on both vertical sides of the first guide wall template 12. The end plates 17 are perpendicular to both the first guide wall template 12 and the second guide wall template 15.

[0041] The support mechanism 2 includes two horizontally arranged trolley support plates, which are connected by a first telescopic rod 5. A plurality of second telescopic rods 8 are vertically connected to the bottom of the trolley support plates, and the sides of the second telescopic rods 8 are connected to the second guide wall template 15 through a connecting frame 18.

[0042] The vibration and curing mechanism 19 includes two first vibration units 23, a second vibration unit 30, a telescopic sleeve 27, a third telescopic rod 28, and a curing component. One end of each of the two first vibration units 23 is connected to the connecting frame 18, and the other end of each of the two first vibration units 23 is hinged to the telescopic sleeve 27. The other end of the telescopic sleeve 27 is connected to the third telescopic rod 28, and the front end of the third telescopic rod 28 is connected to the second vibration unit 30. The curing component is provided on the side of the telescopic sleeve 27.

[0043] Furthermore, the bottom of the first guide wall template 12 is provided with an embedded plate 16, which is disposed in the guide wall groove.

[0044] Furthermore, the top of the first guide wall template 12 is provided with a slot window 13, and the surface of the slot window 13 is provided with a flexible door curtain 14.

[0045] Furthermore, the top of the first guide wall template 12 is provided with several lifting rings 11.

[0046] Furthermore, several second telescopic rods 8 are vertically connected to the bottom of the trolley support plate, and the bottom of the second telescopic rods 8 is provided with casters 9.

[0047] Furthermore, a first controller 7 is provided on the side of the second telescopic rod 8; a plurality of connecting blocks 6 are also evenly distributed on the side of the second telescopic rod 8, and the plurality of connecting blocks 6 are connected to the connecting frame 18.

[0048] Furthermore, the vibration curing mechanism 19 is fixedly connected to the top of the connecting frame 18 via the support base 22, and enters the cavity between the first guide wall template 12 and the guide wall binding steel frame through the slot window 13 of the template mechanism 1; the second vibration unit 30 is provided with multiple vibration devices on its inner side.

[0049] Furthermore, the trolley support plate is composed of a telescopic cylinder block 10 and a steam generating block 3 fixedly connected together; the curing component includes a ventilation pipe 24, a second controller 25 and an atomizing nozzle 26, the steam generating block 3 is connected to the ventilation pipe 24 through a curing hole 4, and the other end of the ventilation pipe 24 is connected to the atomizing nozzle 26.

[0050] Furthermore, a second controller 25 is provided on the side of the ventilation duct 24, and a temperature and humidity detection unit is provided on the side of the atomizing nozzle 26.

[0051] In a second aspect of the invention, a method for using a formwork trolley for a guide wall of a diaphragm wall in an open-cut subway station is provided, comprising:

[0052] Step S1: Excavate the guide wall trench and tie the reinforcing bars along the guide wall trench;

[0053] Step S2: Assemble the template trolley and place it into the guide wall groove through the lifting ring 11;

[0054] Step S3: Apply a release agent to the surface of the second guide wall template 15 on the template trolley and adjust the opening and closing of the second guide wall template 15;

[0055] Step S4: Adjust the spacing between the second guide wall templates 15, install the end plate 17, pour concrete, and start the vibration curing mechanism 19.

[0056] Step S5: Use the curing component to spray high-temperature steam to accelerate concrete consolidation, reduce the spacing between the second guide wall templates 15, and move the template trolley to the next pouring position and repeat steps S3 and S4.

[0057] During the assembly of the template trolley, the support mechanism is connected to the first guide wall template through the connecting frame to form a whole and is placed in the guide wall groove. The positions of the first guide wall template and the second guide wall template can be adjusted through the support mechanism so that it can adapt to the construction of guide walls of different sizes.

[0058] In this embodiment, since the diaphragm wall guide wall generally adopts a “┓┏” shaped integral reinforced concrete structure, the present invention adopts an approximately “┓┏” shaped template trolley structure, which can better fit the surface of the guide wall. The first guide wall template 12 and the second guide wall template 15 are connected by hinges. The second guide wall template 15 is composed of multiple rectangular blocks, and its length can be adjusted according to the actual side length of the guide wall. The multiple rectangular blocks can also be connected by hinges.

[0059] Before and after pouring concrete, the two second guide wall templates 15 are closed to prevent debris from falling into the guide wall and to improve the safety of workers. The bottom of the first guide wall template 12 is provided with an embedded plate 16 of corresponding length. The embedded plate has a conical structure and can be embedded into the excavated guide wall trench, which effectively avoids the problem of concrete running out of the formwork during the pouring process.

[0060] Two end plates 17 are respectively set on both sides of the first guide wall template 12. They can be reused by tenon joints to further strengthen the solution to the problem of concrete running out of the formwork during the pouring process. The end plates 17 are provided with movable pads 21 that slide towards the guide wall. The length of their extension towards the guide wall can be controlled according to the actual situation. After reaching the appropriate length, the fixing rod is inserted through the fixing hole 20 for limiting, so as to achieve more flexible and tight protection for guide walls of different sizes. The upper part of the first guide wall template 12 is provided with a rectangular slot window 13, which can be used for the vibration curing mechanism 19 to extend into for work, and can also be used as an observation window. Its surface is provided with a flexible curtain 14 to enhance the heat preservation effect during the curing process. The top of the first guide wall template 12 is provided with a lifting ring 11 for hoisting equipment.

[0061] The support mechanism 2 includes two trolley support plates, a first telescopic rod 5, and a second telescopic rod 8. Two steam generating blocks 3 are fixedly connected to both ends of the telescopic cylinder block 10 to form the trolley support plate. The second telescopic rod 8 is vertically connected to its bottom side. The bottom of the second telescopic rod 8 is equipped with casters 9, allowing it to move smoothly on uneven trench bottoms. The two telescopic cylinder blocks 10 are connected by the first telescopic rod 5, which provides power to the first telescopic rod 5 to control the template mechanism 1 to reach the appropriate distance on both sides of the guide wall trench. The second telescopic rod 8 is connected to a connecting frame 18 via multiple connecting blocks 6 on its side to push the template mechanism 1. A first controller 7 is provided on the surface of the second telescopic rod 8 to control the movement of the first telescopic rod 5, the second telescopic rod 8, and the casters 9. Multiple curing holes 4 are distributed on the side of the steam generating block 3. The curing component is connected to the steam generating block 3 via a ventilation pipe 24 to spray high-temperature steam.

[0062] The vibration curing mechanism 19 includes a first vibration unit 23, a second vibration unit 30, a telescopic sleeve 27, a third telescopic rod 28, and curing components. One end of the first vibration unit 23 is provided with a support seat 22, which is fixedly connected to the top of the connecting frame 18. It enters the cavity between the template and the guide wall binding steel frame through the slot 13 of the template mechanism 1. The other end is hinged to the telescopic sleeve 27, and the curing components are fixedly connected to the surface of the telescopic sleeve 27. The curing components include: a ventilation pipe 24 connected to the curing hole 4; a second controller 25 in the middle to control the emission of high-temperature steam; an atomizing nozzle 26 at the bottom; and a temperature and humidity detection unit on its side to further enhance the quality control of concrete curing.

[0063] The lower part of the telescopic sleeve 27 is connected to the third telescopic rod 28. The front ends of the two third telescopic rods 28 are movably connected to the second vibration unit 30 through the connecting seat 29. The second vibration unit 30 is equipped with multiple vibrating devices inside. During vibration, the first vibration unit 23 drives the third telescopic rods 28 to perform preliminary vibration of the concrete slurry. Then, the second vibration unit 30 supplements the vibration of the areas not fully vibrated by the first vibration unit 23 to eliminate voids in the concrete slurry.

[0064] The present invention provides a formwork trolley and its method for use in the construction of diaphragm wall guide walls in open-cut subway stations. It facilitates the installation and adjustment of formwork for diaphragm wall guide wall pouring, and enables formwork dismantling and rapid operation, thereby improving construction efficiency, reducing construction period, and enabling timely maintenance of the working wall surface without moving the trolley. This effectively ensures the quality of the concrete structure of the guide wall pouring. Moreover, the vibrating working surface is set as an insert-attached hybrid structure, which has the advantages of large vibration effect, wider vibration range, and better mixture forming effect.

[0065] This invention facilitates the installation and adjustment of formwork for diaphragm wall guide wall casting, thereby adapting to the construction of guide walls of different sizes. It also facilitates formwork removal, allowing the formwork for diaphragm wall guide wall casting to be easily moved to the next casting position, improving construction efficiency and reducing construction period.

[0066] This invention enables timely maintenance without moving the equipment, thereby effectively ensuring the quality of the concrete structure of the guide wall. It solves the problem of untimely maintenance after concrete demolding in the existing guide wall construction process, and quickly achieves concrete consolidation, thus improving the quality of the finished product.

[0067] This invention enables the vibratory working surface to be configured as an insert-attached hybrid structure, ensuring that all positions on the working surface except for the rigid connection points can vibrate during vibration. The excitation force reaches its maximum value at the middle installation point of the vibratory element, thereby enabling vibration of the entire vibratory working surface. This results in the characteristics of high vibration efficiency, wider vibration range, and better mixture forming effect.

[0068] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A formwork trolley for guide walls of diaphragm walls in open-cut subway stations, characterized in that, It includes a support mechanism, on both sides of which right-angled template mechanisms are symmetrically arranged. The support mechanism and the template mechanism are connected by a connecting frame, and the connecting frame is equipped with a vibration curing mechanism. The template mechanism includes a vertically arranged first guide wall template, one end of which is horizontally connected to a second guide wall template, and end plates are provided on both vertical sides of the first guide wall template. The end plates are perpendicular to both the first guide wall template and the second guide wall template. The support mechanism includes two horizontally arranged trolley support plates, which are connected by a first telescopic rod. Multiple second telescopic rods are vertically connected to the bottom of the trolley support plates, and the sides of the second telescopic rods are connected to the second guide wall template through a connecting frame. The vibration and curing mechanism includes two first vibration units, a second vibration unit, a telescopic sleeve, a third telescopic rod, and a curing component; one end of each of the two first vibration units is connected to a connecting frame, and the other end of each of the two first vibration units is hinged to the telescopic sleeve; the other end of the telescopic sleeve is connected to the third telescopic rod; the front end of the third telescopic rod is connected to the second vibration unit; and the curing component is provided on the side of the telescopic sleeve. The trolley support plate is composed of a telescopic cylinder block and a steam generating block fixedly connected together; the curing component includes a ventilation pipe, a second controller and an atomizing nozzle, the steam generating block is connected to the ventilation pipe through a curing hole, and the other end of the ventilation pipe is connected to the atomizing nozzle.

2. The formwork trolley for the guide wall of a diaphragm wall in an open-cut subway station as described in claim 1, characterized in that, The bottom of the first guide wall template is provided with an embedded plate, which is set in the guide wall groove.

3. A formwork trolley for a diaphragm wall guide wall in an open-cut subway station as described in claim 1, characterized in that, The upper part of the first guide wall template is provided with a slot window, and the surface of the slot window is provided with a flexible door curtain.

4. A formwork trolley for a diaphragm wall guide wall in an open-cut subway station as described in claim 1, characterized in that, The top of the first guide wall template is equipped with several lifting rings.

5. A formwork trolley for a diaphragm wall guide wall in an open-cut subway station as described in claim 1, characterized in that, The bottom of the trolley support plate is vertically connected to several second telescopic rods, and the bottom of the second telescopic rods is equipped with casters.

6. A formwork trolley for a diaphragm wall guide wall in an open-cut subway station as described in claim 1, characterized in that, The second telescopic rod is provided with a first controller on its side; the second telescopic rod is also provided with a plurality of connecting blocks evenly distributed on its side, and the plurality of connecting blocks are connected to the connecting frame.

7. A formwork trolley for a diaphragm wall guide wall in an open-cut subway station as described in claim 1, characterized in that, The vibration curing mechanism is fixedly connected to the top of the connecting frame via a support base, and enters the cavity between the first guide wall template and the guide wall binding steel frame through the slot window of the template mechanism; the second vibration unit is equipped with multiple vibration devices on its inner side.

8. A formwork trolley for a diaphragm wall guide wall in an open-cut subway station as described in claim 1, characterized in that, A second controller is provided on the side of the ventilation duct, and a temperature and humidity detection unit is provided on the side of the atomizing nozzle.

9. A method for using a formwork trolley for a diaphragm wall guide wall in an open-cut subway station as described in any one of claims 1-8, characterized in that, include: Step S1: Excavate the guide wall trench and tie the reinforcing bars along the guide wall trench; Step S2: Assemble the template trolley and place it into the guide wall groove using lifting rings; Step S3: Apply a release agent to the surface of the second guide wall template on the template trolley and adjust the opening and closing of the second guide wall template; Step S4: Adjust the spacing between the second guide wall templates, install the end caps, pour concrete, and start the vibration curing mechanism; Step S5: Use the curing component to spray high-temperature steam to accelerate concrete consolidation, reduce the spacing between the second guide wall templates, move the template trolley to the next pouring position, and repeat steps S3 and S4.

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