CN114526090A - Tunnel construction method based on arc steel mould trolley - Google Patents
Tunnel construction method based on arc steel mould trolley Download PDFInfo
- Publication number
- CN114526090A CN114526090A CN202210092889.5A CN202210092889A CN114526090A CN 114526090 A CN114526090 A CN 114526090A CN 202210092889 A CN202210092889 A CN 202210092889A CN 114526090 A CN114526090 A CN 114526090A
- Authority
- CN
- China
- Prior art keywords
- template
- tunnel
- oil cylinder
- formwork
- portal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a tunnel construction method based on an arc steel mould trolley, wherein the arc steel mould trolley comprises a first portal, a second portal and a mould supporting mechanism, the mould supporting mechanism comprises a template component, a first driving oil cylinder, a third driving oil cylinder and an adjusting screw rod, the template component comprises an upper template and a first side template, two ends of the first driving oil cylinder are respectively hinged with the first side template and the first portal, two ends of the third driving oil cylinder are respectively hinged with one end of the upper template close to the first side template and one end of the first side template close to the upper template, and two ends of the adjusting screw rod can be respectively hinged with the first portal and one end of the upper template far away from the first side template; the third driving oil cylinder and the adjusting screw rod are connected, so that the first side template and the upper template can be synchronously supported and demolded through the first driving oil cylinder and the third driving oil cylinder respectively, the demolding difficulty is reduced, the demolding efficiency is improved, and the efficiency of tunnel secondary lining construction is further improved.
Description
The application is a divisional application with the application date of '2021.12.31', the application number of '202111679334.2' and the application name of 'arc steel mould trolley and tunnel construction method using the same'.
Technical Field
The invention relates to the technical field of tunnels, in particular to a tunnel construction method based on an arc steel mould trolley.
Background
For the tunnel with higher sealing requirement, secondary lining is needed after shield construction, so as to meet the requirements of reinforcement and support, sealing and water proofing. In the related technology, the secondary lining construction of the tunnel generally needs to be carried out by using a trolley for pouring in a matching way, and a formwork of the trolley is supported or demolded under the driving of an oil cylinder. But traditional platform truck takes place mutual interference easily between the drive cylinder of a plurality of templates in drawing of patterns process, leads to the drawing of patterns degree of difficulty great, efficiency lower, and the template is nearer with the inner wall in tunnel apart from after the drawing of patterns moreover, collides with the inner wall in tunnel easily at the in-process of removal platform truck.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the tunnel construction method based on the arc steel mould trolley can reduce the demoulding difficulty and improve the demoulding efficiency, thereby greatly improving the efficiency of tunnel secondary lining construction.
According to the tunnel construction method based on the arc steel mould trolley, the arc steel mould trolley comprises a first portal, a second portal and a mould supporting mechanism, wherein two ends of the second portal in the front-back direction are respectively provided with a lifting device, the second portal is provided with a first station and a second station in the front-back direction, and the first portal is movably sleeved on the second portal and can move between the first station and the second station; the formwork supporting mechanism comprises a formwork assembly, a first driving oil cylinder, a second driving oil cylinder, a third driving oil cylinder and an adjusting screw rod, wherein the formwork assembly comprises an upper formwork, a first side formwork, a second side formwork and a lower formwork; the upper template, the first side template, the lower template and the second side template are sequentially connected and arranged around the first portal; the two ends of the first driving oil cylinder are respectively hinged with the first side template and the first door frame, the two ends of the second driving oil cylinder are respectively hinged with the second side template and the first door frame, and the two ends of the third driving oil cylinder are respectively hinged with one end of the upper template close to the first side template and one end of the first side template close to the upper template; two ends of the adjusting screw rod can be respectively hinged to one ends, far away from the first side template, of the first door frame and the upper template; the length of the second portal frame is L in the front-back direction1The length of the template component is L2And satisfies the following conditions: l is1/L2Not less than 2; the construction method comprises the following steps: erecting a first steel bar net rack on the inner wall of the tunnel; the first gantry moves from the first station to the second station; the lifting device drives the second door frame to descend to a first target position, so that the lower template is matched with a part of the structure corresponding to the first steel bar net rack; the second driving oil cylinder drives the second side template to move to a position matched with a part of the structure corresponding to the first steel bar net rack; the first driving oil cylinder drives the first side template to move to a position matched with a partial structure corresponding to the first steel bar net rack; the third driving oil cylinder drives the upper template to move to andthe position of the first steel bar net rack corresponding to partial structure matching; installing the adjusting screw rod, and adjusting the position of the upper template through the adjusting screw rod; pouring concrete between the formwork assembly and the inner wall of the tunnel; the lifting device retracts and disengages from the supporting surface of the tunnel; the second portal moves along the extending direction of the tunnel so as to enable the first portal to be switched from the second station to the first station; the lifting device extends out and is supported on the supporting surface; disassembling the adjusting screw rod; the third driving oil cylinder drives the upper template to reset and demold; the first driving oil cylinder drives the first side template to reset and demold; the second driving oil cylinder drives the second side template to reset and demold; and the lifting device drives the second door frame to ascend to a second target position so as to demould the lower template.
The tunnel construction method based on the arc steel mould trolley provided by the embodiment of the invention at least has the following beneficial effects:
in the construction of the secondary lining of the tunnel, the embodiment of the invention adopts the circular arc steel mould trolley to realize the integral casting of the secondary lining of the cylindrical tunnel subsection, and the circular arc steel mould trolley moves along the extension direction of the tunnel and continuously casts the remaining secondary lining of the tunnel subsection; the circular arc steel mould trolley comprises a first portal, a second portal and a mould supporting mechanism, the second portal is provided with a first station and a second station, the first portal is fixedly connected with the mould supporting mechanism and movably sleeved on the second portal, so that the position can be switched between the first station and the second station, the second portal frame is supported on the supporting surface of the tunnel, the formwork supporting mechanism can complete the procedures of formwork supporting, pouring, forming and the like on the second station under the driving of the first portal frame, and simultaneously the second portal frame is separated from the supporting surface and moves along the extending direction of the tunnel before demoulding, thereby the mold supporting mechanism is switched to the first station, the second portal frame is supported on the supporting surface of the tunnel again, at the moment, the mold supporting mechanism finishes demolding on the first station, and moving to a second station again to realize the working procedures of formwork supporting, pouring, forming and the like of the second lining of the next section of tunnel subsection, and realizing the cycle of integral pouring of the second lining of the tunnel subsection. According to the embodiment of the invention, the integral pouring of the secondary linings of the multiple tunnel sections is realized through the step-changing operation of the second portal and the formwork supporting mechanism, so that the construction efficiency of the secondary lining is improved. The mold supporting mechanism comprises a mold plate assembly, a first driving oil cylinder, a third driving oil cylinder and an adjusting screw rod, the mold plate assembly comprises an upper mold plate and a first side mold plate, two ends of the first driving oil cylinder are respectively hinged with the first side mold plate and a first door frame, two ends of the third driving oil cylinder are respectively hinged with one end of the upper mold plate close to the first side mold plate and one end of the first side mold plate close to the upper mold plate, and two ends of the adjusting screw rod can be respectively hinged with the first door frame and one end of the upper mold plate far away from the first side mold plate; the third driving oil cylinder and the adjusting screw rod are connected in a manner that the first side template and the upper template can be synchronously supported and demolded through the first driving oil cylinder and the third driving oil cylinder respectively, so that the demolding difficulty is reduced, the demolding efficiency is improved, and the secondary lining construction efficiency of the tunnel is further improved; and the template component can be more drawn in first portal under the drawing of patterns state, has effectively avoided first portal to bump with the inner wall in tunnel at the removal in-process, has improved the security of construction.
According to some embodiments of the invention, before the second mast is moved in the extending direction of the tunnel, comprises: and erecting a second steel bar net rack on the inner wall of the tunnel in the extending direction.
According to some embodiments of the present invention, two ends of the first gantry along the front-back direction are respectively provided with a first supporting device, the first supporting device comprises a limiting cylinder and a first supporting beam, and two ends of the limiting cylinder are respectively connected to the first gantry and the first supporting beam; before the concrete is poured between the formwork assembly and the inner wall of the tunnel, the method further comprises the following steps: the limiting oil cylinder drives the first supporting beam to be supported on the supporting surface of the tunnel; before the lifting device drives the second door frame to ascend to the second target position, the lifting device further comprises: and the limiting oil cylinder retracts and is separated from the supporting surface.
According to some embodiments of the invention, after the first portal is moved from the first station to the second station, further comprising: cleaning an outer surface of the stencil assembly.
According to some embodiments of the invention, the cleaning the exterior surface of the stencil assembly comprises: cleaning concrete and curing agents on the outer surfaces of the upper template, the first side template, the second side template and the lower template; and coating a release agent on the outer surfaces of the upper template, the first side template, the second side template and the lower template.
According to some embodiments of the invention, the formwork mechanism further comprises a plurality of end formwork units, the end formwork units are arranged around the front end part of the formwork assembly along the moving direction of the formwork mechanism, the end die unit comprises a first baffle, a second baffle, a limiting piece, a rotating piece, a supporting rod and a limiting lead screw, the first baffle plate and the second baffle plate are arranged at intervals along the radial direction of the template component and form communicating ports, the first baffle plate and the second baffle plate are connected through the limiting piece, one end of the rotating piece is fixedly connected with the first baffle plate and/or the second baffle plate, the other end of the rotating piece is hinged with the template assembly, one end of the limiting screw rod is fixedly connected with the template assembly through the supporting rod, and the other end of the limiting screw rod is hinged with the first baffle or the second baffle; before the concrete is poured between the formwork assembly and the inner wall of the tunnel, the method further comprises the following steps: installing a plurality of limiting screw rods, and supporting a plurality of end die units between the template assembly and the inner wall of the tunnel through the limiting screw rods; before the lifting device drives the second door frame to ascend to the second target position, the lifting device further comprises: and removing the plurality of limiting screw rods and resetting the plurality of end die assemblies.
According to some embodiments of the invention, after installing the plurality of limiting screws and supporting the plurality of end die units between the die plate assembly and the inner wall of the tunnel through the plurality of limiting screws, the method further comprises: installing an embedded part between the template assembly and the inner wall of the tunnel through the communication port; and sealing the communicating port by using a sealing strip.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a schematic view of the overall structure of a circular arc steel form trolley according to an embodiment of the invention;
FIG. 2 is a schematic view of formwork construction of a circular arc steel form trolley according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the demolding construction of the circular arc steel mold trolley according to one embodiment of the invention;
FIG. 4 is a schematic diagram of the retraction of the lift device of the circular arc steel form carriage of one embodiment of the present invention;
FIG. 5 is a sectional view taken along line A-A of FIG. 4;
FIG. 6 is an enlarged view at B in FIG. 5;
FIG. 7 is a schematic view of a lifting device for a circular arc steel form trolley according to an embodiment of the present invention;
FIG. 8 is an exploded view of a second support device of the circular arc steel form trolley according to one embodiment of the present invention;
FIG. 9 is a schematic view of a synchronization loop for a circular arc steel form trolley according to one embodiment of the present invention;
FIG. 10 is a schematic view of an adjusting screw structure of a circular arc steel form trolley according to an embodiment of the invention;
FIG. 11 is an exploded view of the adjustment screw of the circular arc steel form trolley according to one embodiment of the present invention;
FIG. 12 is a schematic view of the construction of a first side form of the circular arc steel form trolley of one embodiment of the present invention;
FIG. 13 is a schematic structural view of another perspective of the first side form of the circular arc steel form trolley in accordance with one embodiment of the present invention;
FIG. 14 is a schematic structural view of an end mold unit of the circular arc steel mold trolley according to an embodiment of the invention;
FIG. 15a is a flowchart of a tunnel construction method based on a circular arc steel form trolley according to an embodiment of the present invention;
FIG. 15b is a flowchart of a tunnel construction method based on a circular arc steel form trolley according to an embodiment of the present invention;
FIG. 16 is a flowchart of a tunnel construction method based on a circular arc steel form trolley according to another embodiment of the present invention;
FIG. 17 is a flowchart of a tunnel construction method based on a circular arc steel form trolley according to another embodiment of the present invention;
FIG. 18 is a flowchart of a tunnel construction method based on a circular arc steel form trolley according to another embodiment of the present invention;
FIG. 19 is a flowchart of a tunnel construction method based on a circular arc steel form trolley according to another embodiment of the present invention;
FIG. 20 is a flowchart of a tunnel construction method based on a circular arc steel form car according to another embodiment of the present invention;
FIG. 21 is a flowchart of a tunnel construction method based on a circular arc steel form trolley according to another embodiment of the present invention;
fig. 22 is a flowchart of a tunnel construction method based on a circular arc steel form car according to another embodiment of the present invention;
fig. 23 is a flowchart of a tunnel construction method based on a circular arc steel form carriage according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality means two or more, and exceeding or the like is understood as not including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, 2 and 5, an overall structural schematic diagram of an arc steel form trolley 1000 according to an embodiment of the present invention may be used for lining a tunnel, especially for secondary lining after preliminary bracing of the tunnel. The circular arc steel form trolley 1000 includes a second gantry 100, a first gantry 200, and a formwork support mechanism 300. The front end and the rear end of the second door frame 100 are provided with lifting devices 110, which are used for driving the second door frame 100 to ascend or descend, and further driving the first door frame 200 and the formwork supporting mechanism 300 to ascend or descend. The second gantry 100 is partially penetrated through the first gantry 200, and the second gantry 100 and the first gantry 200 can move relatively. When the second gantry 100 supports the first gantry 200, the first gantry 200 can move in the front-rear direction of the second gantry 100; when the first gantry 200 supports the second gantry 100, as shown in fig. 4, the lifting device 110 is retracted away from the supporting surface of the tunnel, and the second gantry 100 can move in the fore and aft direction of the first gantry 200, thereby achieving the movement of the circular arc steel form carriage 1000 in a mutually supporting manner. It should be noted that, the relative movement of the second portal 100 and the first portal 200 may be realized by driving a gear by a motor, and the gear may move in a manner of matching with a rack, or may move in a manner of driving a steel wire rope by a winch, which is not limited in the present invention. The engagement between the second portal 100 and the first portal 200 may be in the form of a ball and slide way, or in the form of a guide 220 and a guide rail 130, and the present invention is illustrated in the form of the guide 220 engaging the guide rail 130 in the following description.
Referring to fig. 2 and 3, fig. 2 is a schematic view of a formwork of an arc steel form trolley 1000, fig. 3 is a schematic view of a demoulding of the arc steel form trolley 1000, a section line in fig. 2 and 3 is poured concrete, and a duct piece is arranged on the outer side of the concrete. The formwork mechanism 300 includes a formwork assembly 310, a first drive cylinder 320, a second drive cylinder 330 and a third drive cylinder 340. The template assembly 310 includes an upper template 311, a first side template 312, a lower template 313 and a second side template 314, which are sequentially disposed around the first gantry 200. The upper template 311, the first side template 312, the lower template 313 and the second side template 314 are hinged through bolts in sequence, the upper template 311 is located above the first door frame 200, the first side template 312 and the second side template 314 are located on the left side and the right side of the first door frame 200 respectively, and the lower template 313 is located below the first door frame 200 and is fixedly connected with the first door frame 200. The formwork assembly 310 is used for enclosing a pouring area with the wall surface of the tunnel, and therefore setting of concrete is facilitated.
Referring to fig. 4, one end of the first driving cylinder 320 is hinged to the first side mold plate 312, and the other end of the first driving cylinder 320 is hinged to the first door frame 200; one end of the second driving oil cylinder 330 is hinged with the second side template 314, and the other end of the second driving oil cylinder 330 is hinged with the first portal 200; one end of the third driving cylinder 340 is hinged to one end of the upper die plate 311 close to the first side die plate 312, the other end of the third driving cylinder 340 is hinged to one end of the first side die plate 312 close to the upper die plate 311, and the third driving cylinder 340 can drive the upper die plate 311 and the second side die plate 314 to be connected or disconnected with each other. The first driving cylinder 320, the second driving cylinder 330 and the third driving cylinder 340 are all used for driving the corresponding template assembly 310 to be close to the first door frame 200 to realize demolding or to be far away from the first door frame 200 to realize formwork supporting.
Referring to FIG. 5, the length of the second frame 100 in the front-rear direction is L1, the length of the template assembly 310 is L2, and L1 and L2 satisfy L1/L2 ≧ 2. It is understood that the formwork assembly 310 needs to be moved in the front-rear direction of the second gate frame 100 to realize different positions of the cast tunnel, and thus the length of the second gate frame 100 needs to be greater than or equal to twice the length of the formwork assembly 310 so that the formwork assembly 310 can be smoothly moved to realize the mold release.
Referring to fig. 2, the formwork supporting mechanism 300 further includes a first adjusting screw 350, a second adjusting screw 360 and a third adjusting screw 370, the upper formwork 311 is hinged to the first gantry 200 through the first adjusting screw 350, the first side formwork 312 is hinged to the first gantry 200 through the second adjusting screw 360, and the second side formwork 314 is hinged to the first gantry 200 through the third adjusting screw 370. One end of the first adjusting screw 350 is hinged to one end of the upper template 311 away from the first side template 312, and the other end of the first adjusting screw 350 is hinged to the first door frame 200. The first adjusting screw 350, the second adjusting screw 360 and the third adjusting screw 370 are all used for adjusting the position of the corresponding formwork assembly 310, and after the position of the formwork assembly 310 is determined, the first adjusting screw 350, the second adjusting screw 360 and the third adjusting screw 370 can be used for supporting the formwork assembly 310, so that the position of the formwork assembly 310 can be limited, and the formwork assembly 310 can be located at a position suitable for pouring.
The structure of the first adjusting screw 350 is specifically shown in fig. 10 and 11, the first adjusting screw 350 includes a first screw 351, a first nut 352, a second nut 353, a second screw 354 and an adjusting sleeve 355, the first screw 351 and the second screw 354 are respectively screwed on two ends of the adjusting sleeve 355, the first nut 352 is screwed with the first screw 351 to limit the relative rotation of the first screw 351 and the adjusting sleeve 355, and the second nut 353 is screwed with the second screw 354 to limit the relative rotation of the second screw 354 and the adjusting sleeve 355. The position of the template assembly 310 is adjusted by changing the overall length of the first adjustment screw 350 by rotating the adjustment sleeve 355, and the position of the template assembly 310 is fixed by fixing the length of the first adjustment screw 350 through the first nut 352 and the second nut 353 after the position of the template assembly 310 is determined. It should be noted that the structures of the second adjusting screw 360 and the third adjusting screw 370 are substantially the same as the first adjusting screw 350, and are not described herein again, and the structures of the second adjusting screw 360 and the third adjusting screw 370 can be understood with reference to the structure of the first adjusting screw 350.
Referring to fig. 2, the upper mold plate 311 abuts against the second side mold plate 314 in the mold supporting process, a rubber gasket is arranged on the wall surface of the second side mold plate 314 abutting against the upper mold plate 311, so that abrasion can be reduced, the second side mold plate 314 and the upper mold plate 311 can be fixedly connected through a bolt or a bolt after abutting, and the position of the upper mold plate 311 can be limited only through the first adjusting screw 350. In the demolding process, as shown in fig. 3, if a bolt or a bolt is arranged between the upper template 311 and the second side template 314, the bolt or the bolt needs to be detached first, and the first adjusting lead screw 350, the second adjusting lead screw 360 and the third adjusting lead screw 370 need to be detached, and then the first driving oil cylinder 320, the second driving oil cylinder 330 and the third driving oil cylinder 340 are controlled to drive the corresponding template assembly 310 to perform demolding, after the demolding, the upper template 311 is separated from the second side template 314, and other templates are still hinged. The lower template 313 needs the lifting device 110 to lift up to enable the height of the template assembly 310 to be increased for demoulding.
Referring to fig. 3, the first supporting means 210 is hidden for easy observation. In order to enable the upper mold plate 311, the first side mold plate 312, and the second side mold plate 314 to be closer to the first mast 200 during the demolding process, the third driving cylinder 340 is provided on the upper mold plate 311 and the first side mold plate 312. It can be understood that, in the demolding process, if the third driving cylinder 340 is connected to the first gantry 200, since the distance from the upper mold plate 311 to the first gantry 200 is relatively long, the length of the third driving cylinder 340 is relatively long, which leads to a decrease in rigidity, and vibrations are likely to occur in the driving process, and the driving is not stable; when the third driving oil cylinder 340 contracts for demolding, if the first driving oil cylinder 320 also contracts for demolding, under the condition that the control is unstable, a certain template is easy to be faster or slower, and further the oil cylinder is damaged, in order to reduce the occurrence of the condition, the third driving oil cylinder 340 is usually required to drive the upper template 311 for demolding, and the first driving oil cylinder 320 can drive the demolding; due to the length limitation of the third driving cylinder 340, the deflection angle thereof is limited, and the upper mold plate 311, the first side mold plate 312 and the second side mold plate 314 are restricted from approaching the first gantry 200.
The third driving oil cylinder 340 is arranged on the upper template 311 and the first side template 312, so that the problems can be reduced, the upper template 311 is adjacent to the first side template 312, the length of the third driving oil cylinder 340 is shorter than that when the third driving oil cylinder is arranged on the first portal frame 200, the rigidity of the third driving oil cylinder is better, the vibration can be reduced, and the driving stability is improved; the third driving oil cylinder 340 can work simultaneously with the first driving oil cylinder 320, the two do not influence each other, and the demolding efficiency or the formwork supporting efficiency can be improved; in the demolding process, the third driving oil cylinder 340 has small influence on the whole rotating position of the template, so that the template can be closer to the first portal 200, and the condition that the formwork supporting mechanism 300 collides with the inner wall of the tunnel or the steel bars in the moving process can be reduced.
Referring to FIG. 1, in some embodiments, upper die plate 311, first side die plate 312, and second side die plate 314 each include an arcuate plate 3121 and a plurality of stiffener plates 3122. Referring specifically to fig. 12 and 13, the first side template 312 is illustrated as an example. The crisscross interval of the internal face of arc 3121 is provided with polylith deep floor 3122 to improve arc 3121's bulk strength, reduce arc 3121's deformation, improve its stability. Wherein the arc plate 3121 is integrally formed. It can be understood that the arc plate 3121 is integrally formed, and its surface quality is good, and is smooth and flat, and when demoulding, the surface of concrete structure is smooth and flat. If the first side template 312 is spliced by a plurality of pieces, stress concentration is easy to occur at the spliced position, so that the first side template 312 deforms, and the pouring effect is influenced; and the arc plate 3121 can be subjected to aging treatment after being manufactured, so that the phenomenon of stress concentration is reduced.
In some embodiments, the arc plate 3121 is made of manganese steel, which is a high-strength steel material mainly used for severe conditions such as impact, extrusion, and material abrasion, and has excellent alkali resistance and corrosion resistance. It can be appreciated that concrete is generally alkaline and tends to corrode the curved plate 3121, and the use of manganese steel for the curved plate 3121 reduces the likelihood of corrosion of the curved plate 3121.
Referring to fig. 9, in some embodiments, in order to improve the synchronization of the driving of the first driving cylinder 320, a plurality of first driving cylinders 320 are connected by a synchronization valve (the second driving cylinder 330 and the third driving cylinder 340 are also connected by the synchronization valve to ensure the synchronization of the driving, and the structure and function are basically similar to the first driving cylinder 320, and the first driving cylinder 320 is taken as an example for illustration). Common to the synchronized valves are a splitter valve and a combining and dividing valve 420. Taking the flow dividing and combining valve 420 as an example, the flow dividing and combining valve 420 can enable the first driving oil cylinder 320 to be synchronous in two directions, and the flow dividing and combining valve 420 can also be used for a synchronous circuit 400 with larger load difference, so that speed synchronization can be still ensured when the load is completely deviated, and the synchronization precision is higher. The synchronous circuit 400 refers to a hydraulic system in which two or more hydraulic actuators are operated synchronously at the same displacement or the same speed (or fixed speed ratio).
Referring to fig. 9, for example, when the reversing valve 440 is connected to the left loop, hydraulic oil of the hydraulic pump 460 is divided into two equal hydraulic oil flows into the first driving cylinders 320 by the flow dividing and collecting valve 420, so that the first driving rods of the two cylinders rise synchronously; when the reversing valve 440 is connected to the circuit at the right position, the flow distributing and collecting valve 420 plays a flow collecting role and controls the synchronous descending of the two cylinder pistons. The pilot operated check valve 410 in the circuit is to prevent the first drive cylinders 320 from shifting due to different loads when the stroke is stopped halfway. If one of the first driving cylinders 320 reaches the stroke end first, oil is leaked through the throttle hole in the one-way throttle valve 430, so that all cylinders can reach the end, and accumulated errors are eliminated. The overflow valve 450 plays a role of safety protection, and is depressurized when the pressure exceeds a threshold value. The synchronization circuit 400 enables the driving of the first driving cylinder 320 to be synchronized, reducing deformation of the stencil assembly 310.
Referring to fig. 5 and 6, in some embodiments, the second frame 100 includes a guide rail 130, the guide rail 130 extends along a front-rear direction of the second frame 100, two guide rails 130 are spaced at both upper and lower ends of the second frame 100, the first frame 200 includes guide wheel sets, two guide wheel sets corresponding to positions of the guide rails 130 are spaced at both upper and lower ends of the first frame 200, each guide wheel set includes a plurality of guide wheels 220, and the guide wheels 220 are spaced along an extending direction of the guide rail 130. The guide rail 130 is engaged with the guide roller 220 to roll, so that the second door frame 100 and the first door frame 200 can slide relatively.
It should be noted that the number of the guide rails 130 may be three, four, or other numbers, and is selected according to actual requirements; other numbers of guide wheels 220 are possible, and can be selected according to actual needs. In some embodiments, it is also possible that the guide rail 130 is provided on the first mast 200 and the guide pulley 220 is provided on the second mast 100.
Referring to fig. 3, 4 and 5, the first gantry 200 further includes a first supporting device 210, and the first supporting device 210 is disposed at both front and rear ends of the first gantry 200. It can be understood that the circular arc steel form trolley 1000 is supported in the tunnel by the gravity of the circular arc steel form trolley 1000, and the circular arc steel form trolley 1000 is easily jacked up by concrete in the pouring process, so that the position of the circular arc steel form trolley 1000 is changed, and the pouring effect is influenced. Accordingly, the first supporting device 210 serves to fix the position of the circular arc steel form carriage 1000. The first supporting device 210 comprises a first supporting beam 211 and two limiting oil cylinders 212, the two limiting oil cylinders 212 are arranged on the left side and the right side of the first door frame 200 at intervals, the output ends of the two limiting oil cylinders are fixedly connected with the first supporting beam 211, and the shape of the first supporting beam 211 is matched with the shape of the wall surface of the tunnel or the shape of the reinforcing steel bar net rack. The first support beam 211 of spacing hydro-cylinder 212 drive along vertical direction and tunnel wall or fix the reinforcing bar butt at the tunnel wall to restriction circular arc steel mould platform truck 1000's position reduces the problem that circular arc steel mould platform truck 1000 was by jack-up, can improve the stability of circular arc platform truck.
Referring to fig. 7 and 8, the lifting device 110 includes two legs 111, each leg 111 includes a fixing member 1111, a lifting cylinder 1112, a guide 1114 and a sliding member 1113, the fixing member 1111 is fixedly connected to the guide 1114, a cavity is formed inside the guide 1114, the sliding member 1113 is disposed inside the cavity, one end of the lifting cylinder 1112 is connected to the fixing member 1111, and the other end of the lifting cylinder 1112 is connected to the sliding member 1113, so that the sliding member 1113 can slide along the axial direction of the guide 1114, and the second mast 100 is driven to move in the vertical direction.
As shown in fig. 7 and 8, the second portal 100 further includes a second supporting device 120, the second supporting device 120 is disposed at both front and rear ends of the second portal 100, and the second supporting device 120 is connected to the two legs 111 for driving the circular arc steel form trolley 1000 to shift to the left or right. The second supporting device 120 comprises a connecting piece 121, a second supporting beam 123 and an adjusting oil cylinder 122, the connecting piece 121 comprises a plurality of channel steel 1211 and a plurality of connecting rib plates 1212, the plurality of channel steel 1211 are sequentially connected and enclosed to form a cavity, and part of the channel steel 1211 is fixedly connected with the supporting leg 111 through the connecting rib plates 1212. The adjusting cylinder 122 is disposed in a cavity surrounded by the channel steel 1211, and one end of the adjusting cylinder 122 is connected to the channel steel 12111, and the other end is connected to the second support beam 123. The supporting legs 111 are provided with moving parts 112, and the cross section of the moving parts 112 is L-shaped. There are four moving members 112, each of the legs 111 is provided with one moving member 112 in the front-back direction (the aforementioned "four, two" are only some embodiments of the present invention, and other numbers are also possible, for example, there are eight moving members 112, and there are four legs 111, which are selected according to actual situations), and the second supporting beam 123 is slidably connected to the legs 111 through the moving members 112. It can be understood that, when the tunnel turns, the position of the circular arc steel form trolley 1000 needs to be adjusted, the second supporting beam 123 abuts against the inner wall of the tunnel, and the circular arc steel form trolley 1000 can be wholly deviated under the driving of the adjusting cylinder 122, so that the transverse position of the circular arc steel form trolley 1000 is adjusted.
Referring to fig. 8, the second support beam 123 is provided with a partition plate 124, the partition plate 124 is disposed between the second support beam 123 and the support leg 111 and is fixedly connected to the second support beam 123, and the partition plate 124 is used for reducing a contact area between the second support beam 123 and the support leg 111, so as to reduce friction, improve sliding smoothness, and reduce a phenomenon of jamming. In some embodiments, the partition 124 has an elongated plate shape and is disposed along the extending direction of the second support beam 123. Two partition plates 124 are respectively disposed at two ends of the second support beam 123, so that the shaking of the second support beam 123 can be reduced. It should be noted that the partition 124 may have other shapes, such as a cylindrical shape, an oval shape, etc. The partitions 124 may also be other numbers, such as six, eight, etc.
Referring to fig. 4, the formwork supporting mechanism 300 further includes an end formwork unit 500, the end formwork unit 500 being disposed at an end of the moving direction of the formwork assembly 310, the end formwork unit 500 having a plurality of pieces and being disposed around the formwork assembly 310. The end mold unit 500 is used to form a closed space in cooperation with the mold plate assembly 310 and the tunnel wall to pour concrete. It can be understood that, in the first pouring process of the tunnel, the end form units 500 are disposed at the front and rear ends of the form assembly 310, so as to pour the first reinforced concrete structure, and after the pouring is completed, the first reinforced concrete structure can serve as the end form unit 500, so that the end form unit 500 does not need to be disposed at one end of the form assembly 310 close to the reinforced concrete structure, and only the end form unit 500, that is, one end of the form assembly 310 in the moving direction, needs to be disposed at one end of the form assembly 310 away from the reinforced concrete structure. The moving direction refers to a direction in which the circular arc steel form carriage 1000 advances during the construction work.
Specifically, referring to fig. 14, the end die unit 500 includes a first blocking plate 510, a second blocking plate 520, a limiting member 530, a rotating member 540, a supporting rod 550 and a limiting lead screw 560. The first baffle 510 and the second baffle 520 are arranged at intervals along the radial direction of the formwork assembly 310, gaps are formed at intervals, embedded parts can be placed through the gaps, and construction efficiency is improved. The first barrier 510 and the second barrier 520 are connected through a limiting member 530, and there are two limiting members 530, so that the connection between the first barrier 510 and the second barrier 520 is more stable. After the embedded part is arranged, the gap needs to be sealed by rubber strips and the like, then the foam rubber is coated to improve the sealing effect, and the limiting part 530 is used for preventing the rubber strips from falling off and plays a role in limiting the positions of the rubber strips. The first and second blocking plates 510 and 520 are further connected by a rotating member 540, one end of the rotating member 540 is fixedly connected to any one of the first and second blocking plates 510 and 520, and the other end of the rotating member 540 is hinged to the form assembly 310, so that the end form unit 500 can be rotatably connected to the form assembly 310 to perform demolding or formwork erecting. In order to fix the position of the end die unit 500 when the end die unit 500 is erected, a limit screw 560 is further provided. One end of the supporting rod 550 is fixedly connected with the die plate assembly 310, the other end of the supporting rod 550 is hinged with one end of the limiting screw 560, the other end of the limiting screw 560 is hinged with any one of the first baffle 510 and the second baffle 520, and the position of the end die unit 500 is adjusted by adjusting the length of the limiting screw 560. It should be noted that, the structure of the limit lead screw 560 may refer to the structure of the first adjusting lead screw 350.
According to the arc steel mould trolley provided by the embodiment of the invention, the second portal is provided with the first station and the second station along the front-back direction, and the first portal is movably sleeved on the second portal and can move between the first station and the second station. The first station is located at the rear end in the front-rear direction, and the second station is located at the front end in the front-rear direction. The first station and the second station are positions where the formwork supporting mechanism is located when pouring, and the first portal can drive the formwork supporting mechanism to move on the second portal in a reciprocating mode, so that the positions of the formwork supporting mechanism can be switched between the first station and the second station.
Referring to fig. 15a and 15b, a flowchart of a tunnel construction method based on an arc steel form trolley according to an embodiment of the present invention specifically includes the following steps:
s1501: and erecting a first steel bar net rack on the inner wall of the tunnel. First steel bar net rack is through ligaturing the reinforcing bar in the section of jurisdiction in the tunnel, and first steel bar net rack ligatures according to the secondary lining's in tunnel design.
S1502: the first gantry moves from the first station to the second station. The first portal frame can realize the relative movement with the second portal frame through the cooperation of a winch and a steel wire rope or the cooperation of a motor and a rack, and is not particularly limited herein.
S1503: and the lifting device drives the second door frame to descend to a first target position so that the lower template is matched with a part of the structure corresponding to the first reinforcing steel bar net rack. The first target position refers to the height position of the second portal frame, so that the first portal frame is lowered to the height position ready for construction, namely the position where the lower template is matched with the corresponding partial structure of the first reinforcing steel bar net rack.
S1504: and the second driving oil cylinder drives the second side template to move to a position matched with the partial structure corresponding to the first reinforcing steel bar net rack.
S1505: the first driving oil cylinder drives the first side formwork to move to a position matched with a part of the structure corresponding to the first steel bar net rack.
S1506: and the third driving oil cylinder drives the upper template to move to a position matched with the partial structure corresponding to the first steel bar net rack. It should be noted that step 1505 and step 1506 may be performed synchronously, or sequentially, or alternatively according to actual conditions, so as to implement the formwork support of the upper formwork and the first side formwork.
S1507: and installing an adjusting screw rod, and adjusting the position of the upper template through the adjusting screw rod. Because the both ends of third drive hydro-cylinder are articulated with first side template and cope match-plate pattern respectively, consequently when third drive hydro-cylinder drive is not in place, can change its whole length in order to adjust the distance between the inner wall of cope match-plate pattern and tunnel through adjusting the lead screw to make the cope match-plate pattern move to the more suitable position in pouring.
S1508: concrete is poured between the formwork assembly and the inner wall of the tunnel to form a reinforced concrete structure. It can be understood that the pouring openings are formed in the template assembly, and the pouring openings can be arranged in a plurality of spaced mode according to requirements. And opening the pouring port and pouring concrete through the pouring port during pouring, closing the corresponding pouring port when the liquid level of the concrete is about to reach the pouring port, and replacing the pouring port with a higher position for pouring. The vibrator can be arranged in the pouring process to reduce bubbles formed in the concrete, and the pouring quality is improved.
S1509: the lifting device retracts and disengages the support surface of the tunnel. After the reinforced concrete structure reaches the expected strength, the lifting device retracts, the first portal supports the second portal at the moment, and the retraction of the lifting device can reduce the situation that the lifting device collides with the inner wall of the tunnel during the movement of the second portal.
S1510: the second portal is moved in the direction of extension of the tunnel to switch the first portal from the second station to the first station. The second portal frame moves forwards, so that the first portal frame moves forwards in the subsequent steps, and the integral movement of the arc steel mould trolley is realized, namely the arc steel mould trolley moves from one tunnel subsection to the next tunnel subsection.
S1511: the lifting device extends out and is supported on the supporting surface. The second gantry now supports the first gantry for forward movement of the first gantry in subsequent steps.
S1512: and disassembling the adjusting screw rod. It will be appreciated that the adjustment screws need to be removed prior to stripping of the form assembly so as not to interfere with the rotation of the upper form.
S1513: and the third driving oil cylinder drives the upper template to reset and demould.
S1514: the first driving oil cylinder drives the first side template to reset and demould.
It should be noted that step 1513 and step 1514 may be performed synchronously, or sequentially, or alternatively according to actual conditions, so as to achieve the demolding of the upper mold plate and the first side mold plate.
S1515: and the second driving oil cylinder drives the second side template to reset and demould.
S1516: and the lifting device drives the second door frame to ascend to a second target position so as to demould the lower template. The second target position refers to the height position of the second portal, and the second portal rises to drive the first portal to rise, so that the template assembly is driven to rise, and the lower template is demoulded.
In the construction of the secondary lining of the tunnel, the construction method of the embodiment of the invention adopts the circular arc steel mould trolley to realize the integral casting of the secondary lining of the cylindrical tunnel subsection, and the circular arc steel mould trolley moves along the extension direction of the tunnel and continuously casts the remaining secondary lining of the tunnel subsection; the circular arc steel mould trolley comprises a first portal, a second portal and a mould supporting mechanism, the second portal is provided with a first station and a second station, the first portal is fixedly connected with the mould supporting mechanism and movably sleeved on the second portal, so that the position can be switched between the first station and the second station, the second portal frame is supported on the supporting surface of the tunnel, the formwork supporting mechanism can complete the procedures of formwork supporting, pouring, forming and the like on the second station under the driving of the first portal frame, and simultaneously the second portal frame is separated from the supporting surface and moves along the extending direction of the tunnel before demoulding, thereby the mold supporting mechanism is switched to the first station, the second portal frame is supported on the supporting surface of the tunnel again, at the moment, the mold supporting mechanism finishes demolding on the first station, and moving to a second station again to realize the working procedures of formwork supporting, pouring, forming and the like of the second lining of the next section of tunnel subsection, and realizing the cycle of integral pouring of the second lining of the tunnel subsection. According to the embodiment of the invention, the integral pouring of the secondary linings of the multiple tunnel sections is realized through the step-changing operation of the second portal and the formwork supporting mechanism, so that the construction efficiency of the secondary lining is improved. The construction method of the embodiment of the invention adopts the arc steel mould trolley, the mould supporting mechanism comprises a mould plate component, a first driving oil cylinder, a third driving oil cylinder and an adjusting screw rod, the mould plate component comprises an upper mould plate and a first side mould plate, two ends of the first driving oil cylinder are respectively hinged with the first side mould plate and a first portal, two ends of the third driving oil cylinder are respectively hinged with one end of the upper mould plate close to the first side mould plate and one end of the first side mould plate close to the upper mould plate, and two ends of the adjusting screw rod can be respectively hinged with one end of the first portal and one end of the upper mould plate far away from the first side mould plate; the arrangement positions of the first driving oil cylinder and the third driving oil cylinder enable the first side template and the upper template to be synchronously adjusted through the first driving oil cylinder and the third driving oil cylinder respectively so as to realize template supporting and demolding, the efficiency of template supporting and demolding is improved, the first side template and the upper template cannot interfere with each other when being synchronously demolded, the demolding difficulty is reduced, and the efficiency of tunnel secondary lining construction is further improved; and the template component can be folded in the first portal in a demoulding state, so that the first portal is effectively prevented from colliding with the inner wall of the tunnel in the moving process, and the construction safety is improved.
Referring to fig. 16, a flowchart of a tunnel construction method based on an arc steel form carriage according to another embodiment of the present invention includes the following steps before step S1510:
s1601: and erecting a second steel bar net rack on the inner wall of the tunnel in the extension direction. The second steel bar net rack is bound in the pipe sheet of the tunnel through binding steel bars, and the second steel bar net rack is bound according to the design of the secondary lining of the tunnel. Step S1601 is generally set between steps S1508 and S1509, and in the process of waiting for the reinforced concrete to reach the desired strength, workers can continue to construct the reinforcing steel bar net rack with the second lining for the next section of tunnel, thereby shortening the downtime and improving the construction efficiency of the secondary lining of the tunnel.
Referring to fig. 17, a flowchart of a tunnel construction method based on a circular arc steel form carriage according to another embodiment of the present invention includes the following steps before step S1508:
s1701: the limiting oil cylinder drives the first supporting beam to be supported on the supporting surface of the tunnel. Step S1701 is generally disposed between steps S1507 and S1508, and may also be disposed between steps S1503 and S1504, and the first supporting beam applies a force to the inner wall of the tunnel, so that the first portal and the formwork support mechanism can be more accurately positioned with respect to the inner wall of the tunnel, and the first portal and the formwork support mechanism are prevented from slipping to affect the casting quality when the formwork assembly and the inner wall of the tunnel are cast with concrete.
Referring to fig. 18, a flowchart of a tunnel construction method based on an arc steel form carriage according to another embodiment of the present invention includes, before step S1516, the following steps:
s1801: the limiting oil cylinder retracts and is separated from the supporting surface. Step S1801 is generally set between steps S1515 and S1516, or may be set between steps S1511 and S1512, and after the reinforced concrete reaches the desired strength, the formwork assembly and the reinforced concrete are demolded, and since the lower formwork demold requires the lifting device to drive the second gantry to ascend, thereby driving the first gantry and the formwork support assembly to ascend, the limit cylinder needs to retract to ensure that the limit cylinder does not interfere with the movement of the lifting device.
Referring to fig. 19, a flowchart of a tunnel construction method based on an arc steel form carriage according to another embodiment of the present invention includes the following steps after step S1502:
s1901: the exterior surface of the stencil assembly is cleaned. The surface of the template component can have more substances which influence the demolding after demolding for many times, the demolding effect can be improved through cleaning, the template component is cleaned when the template supporting mechanism moves to the position of the second station, the operation space is larger, workers can clean more conveniently, and the cleaning efficiency is improved. In addition, in order to further improve the convenience and safety of cleaning of workers, a second steel bar net rack can be firstly not erected on the inner wall of the extending direction of the tunnel, but the formwork supporting mechanism is firstly moved to the second station to clean the formwork assembly, the formwork assembly is returned to the first station after the cleaning is finished, then the second steel bar net rack is erected, and pouring of the second lining of the next section of tunnel section is continued after the second steel bar net rack is erected.
Referring to fig. 20, in a flowchart of a tunnel construction method based on an arc steel form carriage according to another embodiment of the present invention, step S1901 specifically includes the following steps:
s2001: and cleaning the concrete and the curing agent on the outer surfaces of the upper template, the first side template, the second side template and the lower template.
S2002: and coating a release agent on the outer surfaces of the upper template, the first side template, the second side template and the lower template.
The curing agent and the concrete on the outer surfaces of the upper template, the first side template, the second side template and the lower template are cleaned, so that the demolding efficiency can be improved. And after cleaning, a release agent is coated according to the actual condition, so that the bonding of concrete after subsequent pouring can be reduced, and the flatness of the inner surface of the demolded tunnel secondary lining can be improved.
Referring to fig. 21, a flowchart of a tunnel construction method based on a circular arc steel form carriage according to another embodiment of the present invention includes the following steps before step S1508:
s2101: and installing a plurality of limiting screw rods, and supporting a plurality of end die units between the template assembly and the inner wall of the tunnel through the limiting screw rods. Before concreting, support the end mould unit and block that the concrete flows from the tip of template subassembly through spacing lead screw, the structure of end mould unit is favorable to improving formwork efficiency to promote secondary lining's the quality of pouring.
Referring to fig. 22, a flowchart of a tunnel construction method based on an arc steel form carriage according to another embodiment of the present invention includes, before step S1516, the following steps:
s2201: and (4) removing the plurality of limiting screw rods and resetting the plurality of end die assemblies. After the reinforced concrete reaches the expected strength, the reset of the end mould unit can be conveniently realized by removing the limiting screw rod, the demoulding efficiency is improved, and the formwork support is conveniently carried out when the second lining of the next section of tunnel subsection is poured.
Referring to fig. 23, a flowchart of a tunnel construction method based on an arc steel form carriage according to another embodiment of the present invention includes the following steps after step S2201:
s2301: and installing the embedded part between the template assembly and the inner wall of the tunnel through the communication port.
S2302: and sealing the communicating port by using a sealing strip.
It can be understood that after the end die unit supports, the embedded part can be placed through the communication port, the construction efficiency of the embedded part can be improved by placing the embedded part through the communication port, and the construction difficulty of the embedded part is reduced. After the embedded part is constructed, the communication port can be sealed through the sealing strips such as the rubber strips, or foam rubber is further smeared in a gap between the sealing strips and the communication port, so that the sealing effect of the end mold unit is improved, and the pouring quality of the secondary lining is improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (7)
1. The tunnel construction method based on the arc steel mould trolley is characterized in that the arc steel mould trolley comprises a first portal, a second portal and a mould supporting mechanism, wherein lifting devices are arranged at two ends of the second portal along the front-back direction, a first station and a second station are arranged on the second portal along the front-back direction, and the first portal is movably sleeved on the second portal and can move between the first station and the second station; the formwork supporting mechanism comprises a formwork assembly, a first driving oil cylinder, a second driving oil cylinder, a third driving oil cylinder and an adjusting screw rod, wherein the formwork assembly comprises an upper formwork, a first side formwork, a second side formwork and a lower formwork; the upper template, the first side template, the lower template and the second side template are sequentially connected and arranged around the first portal; the two ends of the first driving oil cylinder are respectively hinged with the first side template and the first door frame, the two ends of the second driving oil cylinder are respectively hinged with the second side template and the first door frame, and the two ends of the third driving oil cylinder are respectively hinged with one end of the upper template close to the first side template and one end of the first side template close to the upper template; two ends of the adjusting screw rod can be respectively hinged to one ends, far away from the first side template, of the first door frame and the upper template; the length of the second portal frame is L in the front-back direction1The length of the template component is L2And satisfies the following conditions: l is1/L2≥2；
The construction method comprises the following steps:
erecting a first steel bar net rack on the inner wall of the tunnel;
the first gantry moves from the first station to the second station;
the lifting device drives the second door frame to descend to a first target position, so that the lower template is matched with a part of the structure corresponding to the first steel bar net rack;
the second driving oil cylinder drives the second side template to move to a position matched with a part of the structure corresponding to the first steel bar net rack;
the first driving oil cylinder drives the first side template to move to a position matched with a partial structure corresponding to the first steel bar net rack;
the third driving oil cylinder drives the upper template to move to a position matched with a partial structure corresponding to the first steel bar net rack;
installing the adjusting screw rod, and adjusting the position of the upper template through the adjusting screw rod;
pouring concrete between the formwork assembly and the inner wall of the tunnel;
the lifting device retracts and is separated from the supporting surface of the tunnel;
the second portal moves along the extending direction of the tunnel so as to enable the first portal to be switched from the second station to the first station;
the lifting device extends out and is supported on the supporting surface;
disassembling the adjusting screw rod;
the third driving oil cylinder drives the upper template to reset and demold;
the first driving oil cylinder drives the first side template to reset and demold;
the second driving oil cylinder drives the second side template to reset and demold;
and the lifting device drives the second door frame to ascend to a second target position so as to demould the lower template.
2. The tunnel construction method based on the circular arc steel form trolley according to claim 1, wherein before the second portal frame moves along the extending direction of the tunnel, the method comprises the following steps:
and erecting a second steel bar net rack on the inner wall of the tunnel in the extending direction.
3. The tunnel construction method based on the arc steel mould trolley according to claim 1, characterized in that: two ends of the first portal frame in the front-back direction are respectively provided with a first supporting device, each first supporting device comprises a limiting oil cylinder and a first supporting beam, and two ends of each limiting oil cylinder are respectively connected with the first portal frame and the first supporting beam;
before the concrete is poured between the formwork assembly and the inner wall of the tunnel, the method further comprises the following steps:
the limiting oil cylinder drives the first supporting beam to be supported on the supporting surface of the tunnel;
before the lifting device drives the second door frame to ascend to the second target position, the lifting device further comprises:
and the limiting oil cylinder retracts and is separated from the supporting surface.
4. The tunnel construction method based on the circular arc steel mould trolley as claimed in claim 1, wherein after the first portal is moved from the first station to the second station, the method further comprises:
cleaning an outer surface of the stencil assembly.
5. The tunnel construction method based on the arc steel mold trolley according to claim 4, wherein the cleaning of the outer surface of the mold assembly comprises:
cleaning concrete and curing agents on the outer surfaces of the upper template, the first side template, the second side template and the lower template;
and coating a release agent on the outer surfaces of the upper template, the first side template, the second side template and the lower template.
6. The tunnel construction method based on the arc steel mould trolley according to claim 1, characterized in that: the formwork supporting mechanism further comprises a plurality of end formwork units, the end formwork units are arranged at the front end part of the formwork assembly along the moving direction of the formwork supporting mechanism in a surrounding mode, each end formwork unit comprises a first baffle, a second baffle, a limiting part, a rotating part, a supporting rod and a limiting screw rod, the first baffle and the second baffle are arranged at intervals along the radial direction of the formwork assembly to form a communication port, the first baffle is connected with the second baffle through the limiting part, one end of the rotating part is fixedly connected with the first baffle and/or the second baffle, the other end of the rotating part is hinged with the formwork assembly, one end of the limiting screw rod is fixedly connected with the formwork assembly through the supporting rod, and the other end of the limiting screw rod is hinged with the first baffle or the second baffle;
before the concrete is poured between the formwork assembly and the inner wall of the tunnel, the method further comprises the following steps:
installing a plurality of limiting screw rods, and supporting a plurality of end die units between the template assembly and the inner wall of the tunnel through the limiting screw rods;
before the lifting device drives the second door frame to ascend to the second target position, the lifting device further comprises:
and removing the plurality of limiting screw rods and resetting the plurality of end die assemblies.
7. The tunnel construction method based on the circular arc steel form trolley as claimed in claim 6,
after the installing a plurality of the limiting screw rods and supporting a plurality of the end mold units between the template assembly and the inner wall of the tunnel through the plurality of limiting screw rods, the installing method further comprises the following steps:
installing an embedded part between the template assembly and the inner wall of the tunnel through the communication port;
and sealing the communicating port by using a sealing strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210092889.5A CN114526090A (en) | 2021-12-31 | 2021-12-31 | Tunnel construction method based on arc steel mould trolley |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111679334.2A CN114320369A (en) | 2021-12-31 | 2021-12-31 | Circular arc steel mould trolley and tunnel construction method adopting same |
| CN202210092889.5A CN114526090A (en) | 2021-12-31 | 2021-12-31 | Tunnel construction method based on arc steel mould trolley |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111679334.2A Division CN114320369A (en) | 2021-12-31 | 2021-12-31 | Circular arc steel mould trolley and tunnel construction method adopting same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114526090A true CN114526090A (en) | 2022-05-24 |
Family
ID=81022044
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210092889.5A Pending CN114526090A (en) | 2021-12-31 | 2021-12-31 | Tunnel construction method based on arc steel mould trolley |
| CN202111679334.2A Pending CN114320369A (en) | 2021-12-31 | 2021-12-31 | Circular arc steel mould trolley and tunnel construction method adopting same |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111679334.2A Pending CN114320369A (en) | 2021-12-31 | 2021-12-31 | Circular arc steel mould trolley and tunnel construction method adopting same |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN114526090A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024003423A1 (en) * | 2022-06-27 | 2024-01-04 | Tecozam Estructuras Y Drenajes Sl | Self-launching formwork system and method for lining a tunnel |
| CN116423111B (en) * | 2023-06-13 | 2023-08-22 | 广东欣龙隧道装备股份有限公司 | Shield casing welding tool |
-
2021
- 2021-12-31 CN CN202210092889.5A patent/CN114526090A/en active Pending
- 2021-12-31 CN CN202111679334.2A patent/CN114320369A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN114320369A (en) | 2022-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114526090A (en) | Tunnel construction method based on arc steel mould trolley | |
| CN110905554B (en) | Tunnel inverted arch and filled concrete paver and construction process | |
| CN211314235U (en) | Tunnel inverted arch and filling concrete paver | |
| CN216950389U (en) | Circular arc steel mould trolley | |
| CN217292762U (en) | Automatic walking group formwork erection machine capable of adjusting thickness of component | |
| CN216950388U (en) | Circular arc steel mould trolley | |
| CN109371851B (en) | Groove making machine with multiple bottom die head cover supporting frames | |
| KR100565360B1 (en) | Launching system for moving girder at the bridge being constructed by incremental launching method | |
| CN114526091A (en) | Tunnel construction method based on arc steel mould trolley | |
| CN114800834B (en) | High-efficiency low-energy consumption prefabricated part grouping vertical die production system and production method thereof | |
| CN111188289A (en) | Culvert trolley and construction method thereof | |
| CN209874466U (en) | House slip form forming device | |
| CN216689481U (en) | Split type trolley | |
| KR100936997B1 (en) | Side mold for tunnel lining form | |
| CN114059584A (en) | Split type trolley and tunnel construction method adopting same | |
| CN106089257B (en) | A kind of tunnel ditch cable trough construction trolley | |
| CN114888931A (en) | Box girder production system | |
| CN107984600A (en) | A kind of prefabricated reinforced concrete stair automatic open-close assembling die | |
| CN217354397U (en) | Inverted arch trestle | |
| CN209887854U (en) | Novel prestressed track slab tensioning device | |
| CN207972105U (en) | A kind of prefabricated reinforced concrete stair automatic open-close assembling die | |
| CN112177046A (en) | Open cut tunnel lining external mold trolley | |
| CN111042518B (en) | Turnover mechanism of creeping formwork device | |
| CN110984565B (en) | Creeping formwork device for building construction | |
| DE3202336C2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |