Formwork trolley for open excavation of underground diaphragm wall and guide wall of subway station and use method

Abstract

The invention discloses a formwork trolley for open excavation of an underground diaphragm wall and a guide wall of a subway station and a using method, and belongs to the technical field of underground diaphragm wall and guide wall construction.The formwork trolley comprises a supporting mechanism, right-angle formwork mechanisms are symmetrically arranged on the two sides of the supporting mechanism, the supporting mechanism and the formwork mechanisms are connected through a connecting frame, and a vibrating and curing mechanism is arranged on the connecting frame; the template mechanism comprises a first guide wall template which is vertically arranged, and one end of the first guide wall template is horizontally connected with a second guide wall template; the supporting mechanism comprises two trolley supporting plates which are horizontally arranged, the two trolley supporting plates are connected through a first telescopic rod, the bottoms of the trolley supporting plates are vertically connected with a plurality of second telescopic rods, and the side portions of the second telescopic rods are connected with a second guide wall formwork through a connecting frame; the vibrating and curing mechanism comprises two first vibrating units, a second vibrating unit, a telescopic sleeve, a third telescopic rod and a curing assembly. The formwork for underground diaphragm wall guide wall pouring can be conveniently installed and adjusted, and the construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ground-connected wall guide wall construction, and in particular to a template trolley for ground-connected wall guide wall of an open-cut subway station and a use method thereof. Background Art

[0002] At present, when constructing ground-anchored guide walls in open-cut subway station construction projects, the ground-anchored guide walls generally adopt a right-angled, i.e., "┓┏" type integral reinforced concrete structure. When supporting the formwork before pouring, its support system is mostly a "ladder-shaped" frame formed by welding formwork wood and steel bars. After pouring is completed, concrete rectangular blocks are needed as temporary internal supports. It is understandable that this method wastes construction materials and increases construction costs.

[0003] After pouring the diaphragm wall, it needs a long time to maintain. The maintenance is usually carried out by sprinkling water and covering with cloth on site, which not only wastes water resources, but also leads to the problem of dirty and messy construction site. In winter, when the temperature is low, water is easy to freeze, which will seriously delay the construction period. In addition, when pouring the diaphragm wall, workers usually use hand-held stirring rods to stir. This method cannot fully stir, resulting in uneven quality of the finished product, and is time-consuming and labor-intensive. It can be seen that traditional operation methods can no longer meet modern production and efficiency requirements.

[0004] Therefore, how to design and provide a template trolley and a method of use for the open-cut subway station ground-connected wall guide wall to improve construction efficiency and reduce construction costs has become a technical problem that urgently needs to be solved in the current field of continuous wall guide wall construction technology. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a formwork trolley and a use method for the guide wall of the ground-connected wall of an open-cut subway station, which can facilitate the installation and adjustment of the formwork for casting the guide wall of the underground continuous wall, and conveniently realize the formwork dismantling and rapid operation, thereby improving construction efficiency, reducing the construction period, and being able to achieve timely maintenance of the working wall surface without moving the trolley, thereby effectively ensuring the quality of the guide wall casting concrete structure, and the vibrating working surface is arranged as an attached mixed structure, so that it has the good effects of large vibration efficiency, wider vibration range and better mixture molding effect.

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

[0007] In a first aspect of the present invention, a formwork trolley for an open-cut subway station ground-connected wall guide wall is provided, comprising a support mechanism, two sides of the support mechanism are symmetrically provided with right-angled formwork mechanisms, the support mechanism and the formwork mechanism are connected by a connecting frame, and a vibrating curing mechanism is provided on the connecting frame;

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

[0009] The support mechanism comprises two horizontally arranged trolley support plates, the two trolley support plates are connected by a first telescopic rod, a plurality of second telescopic rods are vertically connected to the bottom of the trolley support plates, and the side of the second telescopic rods is connected to the second guide wall template through a connecting frame;

[0010] 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 the two first vibration units is connected to the connecting frame, the other ends of the two first vibration units are respectively 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 a curing component is arranged on the side of the telescopic sleeve.

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

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

[0013] In some embodiments of the present invention, a plurality of hanging rings are provided on the top of the first guide wall formwork.

[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 universal wheels are provided at the bottom of the second telescopic rods.

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

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

[0017] In some embodiments of the present invention, the trolley support plate is composed of a telescopic cylinder block fixedly connected to a steam generating block; the health-care component includes a ventilation pipe, a second controller and an atomizing nozzle, the steam generating block is connected to the ventilation pipe through a health-care 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 present invention, a method for using a template trolley for an open-cut subway station ground-connected wall guide wall is provided, comprising:

[0020] Step S1, excavating a guide wall groove and tying steel bars along the guide wall groove;

[0021] Step S2, assembling the template trolley and placing it into the guide wall groove through a lifting ring;

[0022] Step S3, coating a release agent on the plate surface of the second wall guide template of the template trolley, and adjusting the opening and closing of the second wall guide template;

[0023] Step S4, adjusting the distance between the second guide wall templates, installing the plugging plate, pouring concrete, and starting the vibrating curing mechanism;

[0024] Step S5, using the curing component to spray high-temperature steam to accelerate the consolidation of concrete, reducing the distance between the second guide wall formworks, and moving the formwork trolley to the next pouring position and repeating steps S3 and S4.

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

[0026] The template trolley and use method for the underground continuous wall guide wall of an open-cut subway station provided by the present invention can facilitate the installation and adjustment of the template for pouring the underground continuous wall guide wall, and can also facilitate the demoulding and rapid operation of the template, thereby improving the construction efficiency and reducing the construction period. In addition, the working wall surface can be timely maintained without the trolley moving, thereby effectively ensuring the quality of the guide wall pouring concrete structure. Moreover, the vibrating working surface is set as an insert-attachment hybrid structure, so that it has the good effects of large vibration effect, wider vibration range and better mixture molding effect.

[0027] The present invention can facilitate the installation and adjustment of the template for underground continuous wall guide wall casting, so as to adapt to the construction of guide walls of different sizes, and facilitate the demoulding, and can conveniently move the template for underground continuous wall guide wall casting to the next casting position, thereby improving construction efficiency and reducing construction period;

[0028] The present invention can achieve timely maintenance without moving the equipment, thereby effectively ensuring the quality of the guide wall casting concrete structure, solving the problem of untimely maintenance of concrete after demoulding in the existing guide wall construction process, and quickly achieving concrete consolidation, thereby improving the quality of the finished product;

[0029] The present invention can set the vibrating working surface as an inserted hybrid structure, and ensure that all positions of the working surface except the rigid connection points can vibrate during vibration. The exciting force reaches a maximum value at the middle where the vibrating element is installed, so as to realize vibration of the entire vibrating working surface, thereby making it have the characteristics of large vibration efficiency, wider vibration range and better mixture molding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of a template trolley for an open-cut subway station ground-connected wall guide wall provided in Example 1 of the present invention;

[0031] Figure 2 A schematic diagram of a template mechanism provided in Example 1 of the present invention;

[0032] Figure 3 A schematic diagram of a support mechanism provided in Example 1 of the present invention;

[0033] Figure 4 A schematic diagram of the structure of the connecting frame provided in Example 1 of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of the plugging plate provided in Example 1 of the present invention;

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

[0036] Among them, 1. template mechanism; 2. support mechanism; 3. steam generating block; 4. health hole; 5. first telescopic rod; 6. connecting block; 7. first controller; 8. second telescopic rod; 9. universal wheel; 10. telescopic cylinder block; 11. lifting ring; 12. first guide wall template; 13. slot window; 14. flexible door curtain; 15. second guide wall template; 16. embedded plate; 17. plugging plate; 18. connecting frame; 19. vibrating health mechanism; 20. fixing hole; 21. movable pad; 22. supporting seat; 23. first vibrating unit; 24. ventilation duct; 25. second controller; 26. atomizing nozzle; 27. telescopic sleeve; 28. third telescopic rod; 29. ​​connecting seat; 30. second vibrating unit. DETAILED DESCRIPTION

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

[0038] Example 1

[0039] In a typical embodiment of the present invention, Figure 1-6As shown, a formwork trolley for the open-cut subway station ground-connected wall guide wall is proposed, comprising a support mechanism 2, and 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 through a connecting frame 18, and a vibrating curing mechanism 19 is arranged on the connecting frame 18;

[0040] The template mechanism 1 includes a first vertically arranged guide wall template 12, one end of the first guide wall template 12 is horizontally connected to a second guide wall template 15, and plugging plates 17 are provided on both vertical sides of the first guide wall template 12, and the plugging plates 17 are vertically arranged to 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, and a plurality of second telescopic rods 8 are vertically connected to the bottom of the trolley support plates, and the side of the second telescopic rods 8 is connected to the second guide wall template 15 through a connecting frame 18;

[0042] The vibrating and curing mechanism 19 includes two first vibrating units 23, a second vibrating unit 30, a telescopic sleeve 27, a third telescopic rod 28 and a curing component; one end of the two first vibrating units 23 is connected to the connecting frame 18, the other ends of the two first vibrating units 23 are respectively hinged to the telescopic sleeves 27, the other end of the telescopic sleeve 27 is connected to the third telescopic rod 28, the front end of the third telescopic rod 28 is connected to the second vibrating unit 30, and a curing component is arranged on the side of the telescopic sleeve 27.

[0043] Furthermore, an embedded plate 16 is provided at the bottom of the first guide wall template 12, and the embedded plate 16 is arranged in the guide wall groove.

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

[0045] Furthermore, a plurality of hanging rings 11 are provided on the top of the first guide wall formwork 12 .

[0046] Furthermore, a plurality of second telescopic rods 8 are vertically connected to the bottom of the trolley support plate, and universal wheels 9 are provided at the bottom of the second telescopic rods 8 .

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

[0048] Furthermore, the vibrating and curing mechanism 19 is fixedly connected to the top of the connecting frame 18 through a support seat 22, and enters into 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; a plurality of vibration devices are provided on the inner side of the second vibrating unit 30.

[0049] Furthermore, the trolley support plate is composed of a telescopic cylinder block 10 fixedly connected to a steam generating block 3; the health-care 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 health-care 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 present invention, a method for using a template trolley for an open-cut subway station ground-connected wall guide wall is provided, comprising:

[0052] Step S1, excavating a guide wall groove and tying steel bars along the guide wall groove;

[0053] Step S2, assembling the template trolley and placing it into the guide wall groove through the lifting ring 11;

[0054] Step S3, coating a release agent on the plate surface of the second wall guide template 15 of the template trolley, and adjusting the second wall guide template 15 to open or close;

[0055] Step S4, adjusting the distance between the second guide wall templates 15, installing the plugging plate 17, pouring concrete, and starting the vibrating curing mechanism 19;

[0056] Step S5, using the curing component to spray high-temperature steam to accelerate the consolidation of concrete, reducing the spacing between the second guide wall formworks 15, and moving the formwork trolley to the next pouring position and repeating steps S3 and S4.

[0057] During the process of assembling the template trolley, the supporting mechanism is connected to the first guide wall template through a connecting frame to form a whole, which is placed in the guide wall groove. The position of the first guide wall template and the second guide wall template can be adjusted through the supporting mechanism to adapt to the construction of guide walls of different sizes.

[0058] In this embodiment, since the guide wall of the ground-connected wall generally adopts a "┓┏" type integral reinforced concrete structure, the present invention adopts a template trolley structure that is approximately "┓┏" shaped, which can better fit the guide wall surface. The first guide wall template 12 and the second guide wall template 15 are connected by a loose-leaf. The second guide wall template 15 is composed of multiple rectangular blocks, and the length can be adjusted according to the actual length of the guide wall side. Multiple rectangular blocks can also be connected by loose-leaf.

[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 the workers. An embedded plate 16 of corresponding length is provided at the bottom end of the first guide wall template 12. The embedded plate has a conical structure and can be embedded in the excavated guide wall groove, which effectively avoids the problem of concrete running out of the template during the pouring process.

[0060] Two plugging plates 17 are respectively arranged on both sides of the first guide wall formwork 12. Through the repeated use of mortise and tenon joints, the problem of concrete running out of the formwork during the pouring process can be further strengthened. The plugging plate 17 slides toward the guide wall and is provided with a movable pad 21. The length thereof extending toward the guide wall can be controlled according to actual conditions. After reaching the appropriate length, the fixing rod is inserted into the fixing hole 20 for limiting the position, so as to realize more flexible and tight protection for guide walls of different sizes. A rectangular slot window 13 is provided on the upper part of the first guide wall formwork 12, which can be used for the vibrating and curing mechanism 19 to extend into for work, and can also be used as an observation window. A flexible door curtain 14 is provided on its surface to enhance the heat preservation effect during the curing process. A lifting ring 11 is provided on the top of the first guide wall formwork 12 for hanging equipment.

[0061] The support mechanism 2 includes two trolley support plates, a first telescopic rod 5, and a second telescopic rod 8. The two ends of the telescopic cylinder block 10 are fixedly connected to the two steam generating blocks 3 to form a trolley support plate, and the bottom side thereof is vertically connected to the second telescopic rod 8. The bottom of the second telescopic rod 8 is provided with a universal wheel 9, which can move smoothly on the uneven bottom of the ditch. The two telescopic cylinder blocks 10 are connected by the first telescopic rod 5, and the first telescopic rod 5 is provided with power to control the template mechanism 1 to reach the appropriate distance on both sides of the guide wall groove. The second telescopic rod 8 is connected to the connecting frame 18 through multiple connecting blocks 6 on its side to push the template mechanism 1. The surface of the second telescopic rod 8 is provided with a first controller 7 to control the movement of the first telescopic rod 5, the second telescopic rod 8 and the universal wheel 9. The side of the steam generating block 3 is provided with multiple health holes 4, and the health component is connected to the steam generating block 3 through a ventilation pipe 24 for spraying high-temperature steam.

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

[0063] The lower part of the telescopic sleeve 27 is connected to the third telescopic rod 28, and the front ends of the two third telescopic rods 28 are movably connected to the second vibrating unit 30 through the connecting seat 29. A plurality of vibrating devices are arranged inside the second vibrating unit 30. When vibrating, the first vibrating unit 23 drives the third telescopic rod 28 to initially vibrate the concrete slurry, and then the second vibrating unit 30 supplements the area that is not fully vibrated by the first vibrating unit 23 to eliminate the voids in the concrete slurry.

[0064] The template trolley and use method for the underground continuous wall guide wall of an open-cut subway station provided by the present invention can facilitate the installation and adjustment of the template for pouring the underground continuous wall guide wall, and can also facilitate the demoulding and rapid operation of the template, thereby improving the construction efficiency and reducing the construction period. In addition, the working wall surface can be timely maintained without the trolley moving, thereby effectively ensuring the quality of the guide wall pouring concrete structure. Moreover, the vibrating working surface is set as an insert-attachment hybrid structure, so that it has the good effects of large vibration effect, wider vibration range and better mixture molding effect.

[0065] The present invention can facilitate the installation and adjustment of the template for underground continuous wall guide wall casting, so as to adapt to the construction of guide walls of different sizes, and facilitate the demoulding, and can conveniently move the template for underground continuous wall guide wall casting to the next casting position, thereby improving construction efficiency and reducing construction period;

[0066] The present invention can achieve timely maintenance without moving the equipment, thereby effectively ensuring the quality of the guide wall casting concrete structure, solving the problem of untimely maintenance of concrete after demoulding in the existing guide wall construction process, and quickly achieving concrete consolidation, thereby improving the quality of the finished product;

[0067] The present invention can set the vibrating working surface as an inserted hybrid structure, and ensure that all positions of the working surface except the rigid connection points can vibrate during vibration. The exciting force reaches a maximum value at the middle where the vibrating element is installed, so as to realize vibration of the entire vibrating working surface, thereby making it have the characteristics of large vibration efficiency, wider vibration range and better mixture molding effect.

[0068] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it 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 on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A formwork trolley for the guide wall of the ground-connected wall of an open-cut subway station, characterized in that: It comprises a supporting mechanism, wherein right-angled template mechanisms are symmetrically arranged on both sides of the supporting mechanism, the supporting mechanism and the template mechanism are connected via a connecting frame, and a vibrating and curing mechanism is arranged on the connecting frame; The template mechanism comprises a first vertically arranged guide wall template, one end of the first guide wall template is horizontally connected to the second guide wall template, and plugging plates are provided on both vertical sides of the first guide wall template, and the plugging plates are vertically arranged to the first guide wall template and the second guide wall template; The support mechanism comprises two horizontally arranged trolley support plates, the two trolley support plates are connected by a first telescopic rod, a plurality of second telescopic rods are vertically connected to the bottom of the trolley support plates, and the side of the second telescopic rods is 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 the two first vibration units is connected to the connecting frame, the other ends of the two first vibration units are respectively 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 a curing component is arranged on the side of the telescopic sleeve.

2. A formwork trolley for the guide wall of the ground-connected wall of an open-cut subway station as claimed in claim 1, characterized in that: An embedded plate is provided at the bottom of the first guide wall template, and the embedded plate is arranged in the guide wall groove.

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

4. A formwork trolley for the guide wall of the ground-connected wall of an open-cut subway station as claimed in claim 1, characterized in that: A plurality of hanging rings are arranged on the top of the first guide wall template.

5. The formwork trolley for the open-cut subway station ground-connected wall guide wall according to claim 1, characterized in that: A plurality of second telescopic rods are vertically connected to the bottom of the trolley support plate, and universal wheels are arranged at the bottom of the second telescopic rods.

6. A formwork trolley for the guide wall of the ground-connected wall of an open-cut subway station as claimed in claim 1, characterized in that: A first controller is disposed on the side of the second telescopic rod; a plurality of connection blocks are evenly distributed on the side of the second telescopic rod, and the plurality of connection blocks are connected to the connection frame.

7. A formwork trolley for the guide wall of the ground-connected wall of an open-cut subway station as claimed in claim 1, characterized in that: The vibrating and curing mechanism is fixedly connected to the top of the connecting frame through a supporting seat, and enters into the cavity between the first guide wall template and the guide wall binding steel frame through the slot window of the template mechanism; a plurality of vibration devices are arranged on the inner side of the second vibrating unit.

8. The formwork trolley for the open-cut subway station ground-connected wall guide wall according to claim 1, characterized in that: The trolley support plate is composed of a telescopic cylinder block and a steam generating block fixedly connected; the health-care component includes a ventilation pipe, a second controller and an atomizing nozzle, the steam generating block is connected to the ventilation pipe through a health-care hole, and the other end of the ventilation pipe is connected to the atomizing nozzle.

9. A formwork trolley for the guide wall of the ground-connected wall of an open-cut subway station as claimed in claim 8, 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.

10. A method for using a template trolley for an open-cut subway station ground-connected wall guide wall according to any one of claims 1 to 9, characterized in that: include: Step S1, excavating a guide wall groove and tying steel bars along the guide wall groove; Step S2, assembling the template trolley and placing it into the guide wall groove through a lifting ring; Step S3, coating a release agent on the plate surface of the second wall guide template of the template trolley, and adjusting the opening and closing of the second wall guide template; Step S4, adjusting the distance between the second guide wall templates, installing the plugging plate, pouring concrete, and starting the vibrating curing mechanism; Step S5, using the curing component to spray high-temperature steam to accelerate the consolidation of concrete, reducing the distance between the second guide wall formworks, and moving the formwork trolley to the next pouring position and repeating steps S3 and S4.

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