CN111911194A - Multifunctional two-lining trolley construction equipment and method for long and wide tunnel - Google Patents
Multifunctional two-lining trolley construction equipment and method for long and wide tunnel Download PDFInfo
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- CN111911194A CN111911194A CN202010751103.7A CN202010751103A CN111911194A CN 111911194 A CN111911194 A CN 111911194A CN 202010751103 A CN202010751103 A CN 202010751103A CN 111911194 A CN111911194 A CN 111911194A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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Abstract
The invention discloses multifunctional two-lining trolley construction equipment for a long and wide tunnel, which comprises a portal frame, wherein two sides of the outer wall of a top plate of the portal frame are fixedly connected with fixed plates, the outer wall of one side of each of the two fixed plates is fixedly provided with a hydraulic cylinder through a bearing, piston rods of the two hydraulic cylinders are movably connected with the same top plate, the outer wall of the top plate is fixedly connected with a support column, the outer wall of the top of the support column is fixedly connected with a first template with an arc structure, two ends of the first template are movably connected with second templates, and one end of each of the two second templates is movably connected. The multifunctional two-lining trolley is used in the widening section of the tunnel with the extra long city, the two-lining templates are stable, the construction dislocation is small, the concrete is solid and beautiful, and obvious economic and social benefits are obtained.
Description
Technical Field
The invention relates to the technical field of two-lining trolleys, in particular to multifunctional two-lining trolley construction equipment and method for a long and wide tunnel.
Background
At present, the construction method of the widened section of the domestic highway tunnel generally adopts three construction methods of a second lining trolley of the widened standard section, a full hydraulic trolley of an emergency parking belt, a steel arch frame and a combined template. By adopting the three construction modes, the template (trolley) needs to be assembled and disassembled once at each emergency stop zone (widening section) in the tunnel, and then the emergency stop zone is transported to the next widening section for assembly, so that the construction is relatively labor-consuming, time-consuming and material-consuming. If the construction method of widening the standard section lining trolley is adopted, the second lining of the standard section is stopped, the safety distance between the lining section and the excavation surface is enlarged, or the tunnel excavation speed needs to be reduced; by adopting the full-hydraulic trolley at the widening section, the template trolley must be assembled at each widening section again, a large amount of manpower and mechanical equipment are required to be invested, the construction speed of the widening section is directly influenced, and the lining of an emergency parking area is not finished after the lining of the standard section is finished; a large amount of labor is required to be invested when the steel arch frame and the combined template are adopted, the work efficiency is low, the template is easy to deform in the lining pouring process, the influence of human factors is large in the template reinforcing process, and the appearance quality of the lining is difficult to guarantee.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a multifunctional two-lining trolley construction device and method for a long and wide tunnel.
The multifunctional two-lining trolley construction equipment for the long and wide tunnel comprises a portal frame, wherein fixing plates are fixedly connected to two sides of the outer wall of a top plate of the portal frame, hydraulic cylinders are fixed to the outer wall of one side of each fixing plate through bearings, piston rods of the two hydraulic cylinders are movably connected with the same top plate, a supporting column is fixedly connected to the outer wall of the top plate, a first template with an arc-shaped structure is fixedly connected to the outer wall of the top of the supporting column, second templates are movably connected to two ends of the first template, and a third template is movably connected to one end of each second template.
Preferably, hydraulic supporting mechanisms are arranged on two sides of the outer wall of the bottom of the portal frame, and walking mechanisms are arranged on the outer walls of the bottoms of the two hydraulic supporting mechanisms.
Preferably, the outer walls of the two sides of the portal frame are respectively and movably connected with eight screw mechanisms, and the other ends of the eight screw mechanisms are respectively connected to the outer walls of the second template and the third template.
Preferably, the screw mechanism comprises a threaded pipe, and a screw is screwed on the inner wall of the threaded pipe.
The construction method of the multifunctional two-lining trolley construction equipment for the long and wide tunnel comprises the following steps:
s1: designing a multifunctional two-lining trolley at a widening section, researching a tunnel design drawing in detail, formulating a two-lining construction scheme of an emergency parking zone according to the length and the number of emergency parking zones of a tunnel, the combination condition of the emergency parking zone and a standard section tunnel, the size of a flat curve and the like, and combining site personnel and mechanical configuration conditions, designing a trolley form, ensuring the safety, economy and reasonableness of the construction scheme, wherein the trolley design comprises trolley length determination, trolley section size determination, two-trolley connection mode design, trolley standard section walking design, trolley pouring construction design, trolley crossing cross tunnel design and gradual change section construction design;
s2: a professional manufacturer orders and checks, the processing quality and performance of the trolley are directly related to the quality of the second lining concrete of the emergency stop zone, enough attention is paid to the checking and accepting of the trolley, a trolley checking and accepting leader group is established, a specially-assigned person is irregularly sent to the manufacturer to supervise the processing quality, after the trolley is successfully assembled in a trial mode, the trolley can be assembled outside a hole after being transported to a site, and the trolley can be used after being qualified in a detection and acceptance mode;
s3: construction preparation, carrying out first engineering approval, and carrying out process verification to achieve equipment familiarity, exploration and improvement of processes, verification of design and construction organization schemes, important verification of various performances of the trolley, disassembly and assembly operation of the trolley, arrangement of a plug board, use of a waterproof board operation platform, problems in the concrete pouring process, personnel and mechanical configuration; according to the construction of a technological test section, carefully summarizing, analyzing and researching, and timely correcting to improve the quality and the construction level of the second lining concrete, when a tunnel is crossed and a hole is corrected, the lowest small formwork is lifted by using a hand hoist, the preparation can be completed, when the tunnel is ready to pass through a cross tunnel of a vehicle, two sections of lower formworks and a foundation jack need to be dismounted, all main oil cylinders are retracted, the traveling is rotated by 90 degrees, the traveling preparation can be completed, and after the traveling preparation is completed, a top butt bolt is dismounted to divide the trolley into two sections;
s4: the platform truck location, the platform truck targets in place the back, measures central line and elevation earlier, through upper and lower and level adjustment hydraulic system accurate positioning, prepares before the concrete is poured: the control handle respectively moves the vertical lifting oil cylinders to enable the elevation of the vault of the formwork to coincide with the elevation of the vault of the designed lining, the control handle respectively moves the lateral oil cylinders on two sides, the synchronization condition of the lateral oil cylinders on each side is observed, the throttle valve is adjusted to enable the lateral oil cylinders to be synchronized, the lateral side of the multifunctional two-lining trolley is opened to the outline position of the designed lining, whether the central line of the formwork of the trolley is coincided with the central line of the tunnel or not is retested, and whether the elevation of the vault of the; re-testing whether the side mold reaches the designed position; stopping an oil pump motor of the hydraulic station; screwing out each basic jack screw rod to tightly prop against the steel rail; screwing a horizontal locking screw rod on the cross beam; screwing the lateral screw rods at all positions; screwing each jack at the template foot; the handle is shaken to release the pressure of the lateral oil cylinder;
s5: waterproof board and reinforcing bar construction, the waterproof board installation: the workman hangs the whole ring waterproof board on hydraulic pressure arc frame on waterproof board mounting platform, through hydraulic pressure jacking to the tight subsides of hunch portion rock face, then carries out the frenulum fixed again, has solved the difficult tight rock face problem of pasting of hunch portion waterproof board, reduces concrete hunch portion and takes off, the reinforcing bar installation: the processed circumferential steel bars are placed on the arc-shaped frame, the hydraulic stroke value is determined through calculation, the positions of the circumferential steel bars can be accurately positioned, and then the steel bar spacing is adjusted to be firmly welded with the edge base embedded steel bars, so that the thickness of a steel bar protective layer can be effectively controlled, and the problem that a steel bar framework is raised in the past is solved;
s6: pouring concrete, namely pouring the concrete from bottom to top, firstly, arching the wall, then, symmetrically pouring, wherein the free-falling height of the concrete during pouring is not more than 1.5m, pouring the concrete through a reserved hole opening on a template, vibrating the concrete by adopting a high-frequency vibrator and assisting a vibrator to ensure the compactness of the concrete, and monitoring the second-lining vault of the widening section by using a second-lining anti-disengaging monitor installed on a multifunctional second-lining trolley to prevent the vault from disengaging;
s7: demoulding, wherein the concrete strength during demoulding is 100% of the designed strength, the primary support is used for constructing the secondary lining after deformation is stable, the concrete strength during demoulding is 8.0MPa, and when the humidity is insufficient, the concrete is subjected to spray water spraying maintenance after demoulding for 14 days;
s8: the trolley travels to the first widening section, the construction effect of the second lining concrete is checked after each group of second linings, the radar detection is carried out in time, the weak link is corrected in time after the reason is analyzed, and the appearance quality of the concrete is improved.
Preferably, in S1, the length of the trolley is determined as follows: considering that the platform truck need pass the horizontal passageway of going with the mode of horizontal walking, combining the cross section of the horizontal hole of going with the preparation standard of platform truck template, this platform truck design comprises two sections, and every section is long 4.5 meters under the circumstances of guaranteeing to pass through the horizontal hole of going smoothly, ensures the rationality of designing the platform truck, platform truck section size's affirmation: because the trolley is put into one time, the process can not make mistakes, before the trolley design delivery manufacturer orders, a general engineer must check and check the clearance in person, and the following points are rechecked: the outline radius of the trolley is generally 5cm larger than the design for ensuring the clearance of the two linings, the ground elevation before the two linings are constructed is determined, the maximum stroke of a jacking oil cylinder of the hydraulic trolley can meet the walking requirement and the requirement of passing through a transverse hole of the trolley, the requirement of the maximum equipment clearance passing in the tunnel is determined, the section of the normal section of the tunnel and the section of the emergency stop zone are overlapped in a CAD drawing mode, the above aspects are marked in the drawing, and relevant requirements are met, and a written delivery manufacturer carries out further design.
Preferably, in S1, the standard section of the trolley is designed to travel, before the trolley travels in sections, the center point of the trolley and the center point of the cross hole of the trolley must be aligned, after the alignment is completed, two rows of steel rails in the middle of the trolley are laid, and then the whole lifting hydraulic system of the trolley is started, so that the rail wheels in the middle are just lowered to the rail surface, thereby playing a supporting role; then, connecting bolts in the middle of the trolley are dismantled from top to bottom, finally, pins at the position of a cross beam are taken down, the trolley is separated from the middle into two sections of independent trolleys, the two independent trolleys pass through a track laying system and a self-contained motor walking system on the trolley, the two independent trolleys are opened to the next widening section one by one, after walking to a specified position, all car stoppers are installed and steel rails are locked, an inclined iron is arranged between a walking wheel and the steel rails, at least one position is arranged at each side, one piece is respectively arranged at the front and the back of each position, a wood bar is not allowed to replace an inclined iron operating handle to respectively act two translation oil cylinders, the central line of a template is coincided with the central line of a tunnel, the quick conversion of the positions of the multifunctional two lining trolleys at different widening sections is realized, the construction design of the trolley is realized, in order to reduce the problem that platforms are easy to miss at the position of a two lining construction seam, a side mold support is specially added, the lap joint of the tops of the two linings cannot exceed 10 centimeters, in order to avoid the, an iron plate with the thickness of 2 mm is welded at the top of the trolley template, so that no obvious slab staggering exists at the joint of the cast trolley template and the main hole.
Preferably, in S1, the trolley is designed to pass through the car crosswalk, in order to reduce cost, the multifunctional two-lined trolley at the widening section has the ability to pass through the car crosswalk, after the multifunctional two-lined trolley is constructed at the widening section of the left hole, the multifunctional two-lined trolley can pass through the car crosswalk to perform the ability of two linings at the widening section of the right hole, so that the construction requirements can be met only by respectively having 1 multifunctional two-lined trolley at the inlet and outlet ends, the construction cost is greatly reduced, when the multifunctional two-lined trolley passes through the car crosswalk, the two sections of the lower template and the foundation jack are removed, the trolley is divided into 2 sections, the main oil cylinder is completely withdrawn, the travelling wheels are rotated by 90 degrees, the travelling wheels are pulled by external force to pass through the car crosswalk, the construction design at the gradual change section, the shape and the size of the tunnel section are gradually changed, so that wind passing through the inclined shaft and the vertical shaft can not generate vortex, and wind loss and damage to the wall surface of the tunnel due to, the gradual change section is gradually changed, the existing two-lining trolley pouring template cannot be applied, if a support is erected on the original two-lining trolley, the labor and time are consumed, the construction progress is influenced, therefore, the project part enables the multifunctional two-lining trolley to have the work capacity of construction on the gradual change section according to the characteristics of the gradual change sections with different lengths, the multifunctional two-lining trolley is enabled to be additionally attached to the curved surface of the gradual change section by adding a plurality of small templates on the original trolley template, the cost is reduced, the construction quality is improved, the gradual change section has a certain linear change rule, only one B19 template is different from a 30m template and a 25m template, the thought is provided for the construction of the later gradual change section, even if the curved surface of a tunnel is different, the gradual change section is also different, and the templates from B1 to B19 can be newly manufactured, the multifunctional two-lining trolley is arranged on the multifunctional two-lining trolley, so that the application range of the multifunctional two-lining trolley is greatly expanded.
The beneficial effects of the invention are as follows:
1. the side forms are flexible and changeable, and the adaptability is wide: the side formwork supports around adopt the support of side lead screw, has flexible function, and the cooperation multistage formula is pour the template, can be suitable for the two linings of multiple cross section and pour, like emergency stop area two linings, gradual change section two linings and tunnel standard section two linings, view area two linings, still has the function of passing through the cross tunnel of driving simultaneously, has realized the characteristics that a tractor serves several purposes, adaptability are wide.
2. The disassembly and assembly operation is simple, and the promotion effect is obvious: the trolley is divided into two sections, 20 bolts which are respectively connected with the butt pins through 2 portal girders and 20 bolts at the longitudinal rib plate of the arch crown of the template form a whole, the disassembly and the assembly are simple, convenient and labor-saving, the assembly or the disassembly only needs 1 to 2 days, and the time of the disassembly and the assembly of the trolley is greatly reduced compared with the time of half a month.
3. Electric drive, the walking is high-efficient: add two sets of (4) walking motors in traveling system, can let the platform truck more convenient, high-efficient at the direction of travel conversion, template bulk strength and stability are reliable: because the main beam is higher than the web plate of the common trolley by adopting the double-portal assembled mode, the integral strength of the trolley is higher, and the quality of the multifunctional two-lining trolley is more ensured than the mode of widening and processing by a professional manufacturer. Each part of the trolley is analyzed by a computer finite element, each working performance is stable, the trolley is not easy to deform and run, the abutted seams are few, and the appearance quality of concrete is improved.
Drawings
FIG. 1 is a schematic structural diagram of a multifunctional two-lining trolley construction device for a long and wide tunnel according to the present invention;
fig. 2 is a process flow diagram of the multifunctional two-lining trolley construction equipment and method for the long and wide tunnel provided by the invention.
In the figure: the device comprises a portal frame 1, a hydraulic cylinder 2, a top plate 3, a first template 4, a second template 5, a third template 6, a screw mechanism 7, a hydraulic supporting mechanism 8 and a traveling mechanism 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, multi-functional two lining platform truck construction equipment in long wide tunnel, including portal frame 1, the equal fixedly connected with fixed plate in both sides of the 1 roof outer wall of portal frame, and one side outer wall of two fixed plates is fixed with pneumatic cylinder 2 through the bearing, 2 piston rod swing joints of two pneumatic cylinders have same roof 3, the equal fixedly connected with pillar of 3 roof outer walls of roof, and pillar top outer wall fixedly connected with arc structure's first template 4, the equal swing joint in both ends of first template 4 has second template 5 and the equal swing joint in one end of two second templates 5 has third template 6.
The construction method of the multifunctional two-lining trolley construction equipment for the long and wide tunnel comprises the following steps:
s1: designing a multifunctional two-lining trolley at a widening section, researching a tunnel design drawing in detail, formulating a two-lining construction scheme of an emergency parking zone according to the length and the number of emergency parking zones of a tunnel, the combination condition of the emergency parking zone and a standard section tunnel, the size of a flat curve and the like, and combining site personnel and mechanical configuration conditions, designing a trolley form, ensuring the safety, economy and reasonableness of the construction scheme, wherein the trolley design comprises trolley length determination, trolley section size determination, two-trolley connection mode design, trolley standard section walking design, trolley pouring construction design, trolley crossing cross tunnel design and gradual change section construction design;
s2: a professional manufacturer orders and checks, the processing quality and performance of the trolley are directly related to the quality of the secondary lining concrete of the emergency stop zone, sufficient attention is paid to the checking and accepting of the trolley, a trolley checking and accepting leader group is established, a specially assigned person is irregularly sent to the manufacturer to supervise the processing quality, and the trolley can be transported to the site after being successfully spliced. After the trolley is transported to the site, the trolley can be assembled outside the hole so as to be used after being qualified by detection and acceptance;
s3: construction preparation, carrying out first engineering approval, and carrying out process verification to achieve equipment familiarity, exploration and improvement of processes, verification of design and construction organization schemes, important verification of various performances of the trolley, disassembly and assembly operation of the trolley, arrangement of a plug board, use of a waterproof board operation platform, problems in the concrete pouring process, personnel and mechanical configuration; according to the construction of a technological test section, carefully summarizing, analyzing and researching, and timely correcting to improve the quality and the construction level of the second lining concrete, when a tunnel is crossed and a hole is corrected, the lowest small formwork is lifted by using a hand hoist, the preparation can be completed, when the tunnel is ready to pass through a cross tunnel of a vehicle, two sections of lower formworks and a foundation jack need to be dismounted, all main oil cylinders are retracted, the traveling is rotated by 90 degrees, the traveling preparation can be completed, and after the traveling preparation is completed, a top butt bolt is dismounted to divide the trolley into two sections;
s4: the platform truck location, the platform truck targets in place the back, measures central line and elevation earlier, through upper and lower and level adjustment hydraulic system accurate positioning, prepares before the concrete is poured: the control handle respectively moves the vertical lifting oil cylinders to enable the elevation of the vault of the formwork to coincide with the elevation of the vault of the designed lining, the control handle respectively moves the lateral oil cylinders on two sides, the synchronization condition of the lateral oil cylinders on each side is observed, the throttle valve is adjusted to enable the lateral oil cylinders to be synchronized, the lateral side of the multifunctional two-lining trolley is opened to the outline position of the designed lining, whether the central line of the formwork of the trolley is coincided with the central line of the tunnel or not is retested, and whether the elevation of the vault of the; re-testing whether the side mold reaches the designed position; stopping an oil pump motor of the hydraulic station; screwing out each basic jack screw rod to tightly prop against the steel rail; screwing a horizontal locking screw rod on the cross beam; screwing the lateral screw rods at all positions; screwing each jack at the template foot; the handle is shaken to release the pressure of the lateral oil cylinder;
s5: waterproof board and reinforcing bar construction, the waterproof board installation: the workman hangs the whole ring waterproof board on hydraulic pressure arc frame on waterproof board mounting platform, through hydraulic pressure jacking to the tight subsides of hunch portion rock face, then carries out the frenulum fixed again, has solved the difficult tight rock face problem of pasting of hunch portion waterproof board, reduces concrete hunch portion and takes off, the reinforcing bar installation: the processed circumferential steel bars are placed on the arc-shaped frame, the hydraulic stroke value is determined through calculation, the positions of the circumferential steel bars can be accurately positioned, and then the steel bar spacing is adjusted to be firmly welded with the edge base embedded steel bars, so that the thickness of a steel bar protective layer can be effectively controlled, and the problem that a steel bar framework is raised in the past is solved;
s6: pouring concrete, namely pouring the concrete from bottom to top, firstly arching the wall and then symmetrically pouring the concrete. The free-falling height during pouring is not more than 1.5m, pouring is carried out through an orifice reserved on a template, a high-frequency vibrator is adopted for vibrating, a vibrator is assisted to ensure the compactness of concrete, and a secondary lining anti-separation monitor mounted on a multifunctional secondary lining trolley is utilized for monitoring a secondary lining vault of a widening section to prevent the vault from being separated;
s7: demoulding, wherein the concrete strength during demoulding is 100% of the designed strength, the primary support is used for constructing the secondary lining after deformation is stable, the concrete strength during demoulding is 8.0MPa, and when the humidity is insufficient, the concrete is subjected to spray water spraying maintenance after demoulding for 14 days;
s8: the trolley travels to a widening section, the construction effect of the two-lining concrete is checked after each group of two linings, the radar detection is carried out in time, the weak link is corrected in time after the reason is analyzed, and the appearance quality of the concrete is improved
According to the invention, the two sides of the outer wall of the bottom of the portal frame 1 are both provided with the hydraulic supporting mechanisms 8, the outer walls of the bottoms of the two hydraulic supporting mechanisms 8 are provided with the traveling mechanisms 9, the outer walls of the two sides of the portal frame 1 are respectively and movably connected with the eight screw mechanisms 7, the other ends of the eight screw mechanisms 7 are respectively connected to the outer walls of the second template 5 and the third template 6, each screw mechanism 7 comprises a threaded pipe, the inner wall of each threaded pipe is in threaded connection with a screw, and in S1, the length of the trolley is determined: considering that the trolley needs to pass through the trolley transverse passage in a transverse walking mode, and the cross section of the trolley transverse hole is combined with the manufacturing standard of the trolley template, the trolley is designed to be composed of two sections, and each section is 4.5 meters long. Guarantee to pass through smoothly under the condition of car row cross cut, ensure the rationality of design platform truck, the definite of platform truck section size: because the trolley is put into one time, the process can not make mistakes, before the trolley design delivery manufacturer orders, a general engineer must check and check the clearance in person, and the following points are rechecked: the outline radius of the trolley is generally 5cm larger than the design in order to ensure the clearance of the two linings, the ground elevation (the bottom surface of a steel rail) before the two linings are constructed is determined, the maximum stroke of a jacking oil cylinder of the hydraulic trolley can meet the traveling requirement and the requirement of passing through a cross hole of a trolley, the maximum equipment clearance requirement of passing in the tunnel is determined, the section of a normal section of the tunnel and the section of a rapid parking area are superposed in a CAD drawing mode, the above aspects are marked in the drawing and relevant requirements, a written delivery manufacturer carries out further design, in S1, the standard section traveling design of the trolley is carried out, the center point of the trolley and the center point of the cross hole of the trolley need to be centered before the trolley travels in sections, after centering is finished, two rows of steel rails in the middle of the trolley are laid, then the integral lifting hydraulic system of the trolley is started, and rail wheels in the middle are just lowered to the rail; then the connecting bolt in the middle of the trolley is dismantled from top to bottom, finally the pin at the cross beam is taken down, and the trolley is separated into two independent trolleys from the middle. And then, two independent trolleys are driven to the next widening section in tandem through a track laying system and a motor walking system arranged on the trolleys, all car stoppers are installed and steel rails are locked after the trolleys walk to a specified position, an inclined iron is arranged between a walking wheel and the steel rails, at least one part is arranged on each side, one part is arranged in front of and behind each part, and the inclined iron is not allowed to be replaced by a batten. The control handle respectively acts the two translation oil cylinders to enable the center line of the template to coincide with the center line of the tunnel. At the moment, the rapid switching of the positions of the multifunctional two-lining trolleys of different widening sections is realized, the trolley pouring construction design is realized, in order to reduce the problem that the joints of the two-lining construction are easy to stagger, side mould supports are specially added, the lap joint of the tops of the two linings cannot exceed 10 centimeters, in order to avoid the situation that the two-lining joints of the main hole forming sections are not closely attached after the trolley is centered, an iron plate with the thickness of 2 millimeters is welded on the top of a trolley template, so that the joints of the two linings and the main hole are not obviously staggered, in S1, the trolley passes through a transverse hole of the trolley, in order to reduce the cost, the multifunctional two-lining trolleys of the widening sections have the capability of passing through transverse holes of the trolley, after the multifunctional two-lining trolleys are constructed on the widening section of a left hole, the capability of passing through transverse holes of the trolley to widen the sections of a right hole can be realized, so that the construction requirements can be met only by respectively having 1 multifunctional two-lining trolleys at the, the construction cost is greatly reduced, when the multifunctional two-lining trolley passes through the trolley crosshole, the lower two-section template and a foundation jack are removed, the trolley is divided into 2 sections, a main oil cylinder is completely withdrawn, a travelling wheel is rotated by 90 degrees and pulled by external force, the multifunctional two-lining trolley can pass through the trolley crosshole, the construction design of the gradual change section is realized, the sectional shape and the size of the gradual change section of the tunnel are gradually changed, the wind passing through an inclined shaft and a vertical shaft can not generate vortex, the wind power loss and the damage to the wall surface of the tunnel due to the wind power are reduced, the gradual change section is gradually changed due to the section, the existing two-lining trolley pouring template cannot be suitable, if a support is erected on the original two-lining trolley, the manpower and the time can be consumed, the construction progress is influenced, therefore, the kernel part has the construction performance of the gradual change section according to the characteristics of different lengths, and small templates are added on the original trolley template, the multifunctional two-lining trolley is attached to the curved surface of the transition section, so that the cost is reduced, the construction quality is improved, the transition section has a certain linear change rule, only one B19 template difference can be seen from a transition section template with the length of 30m and a transition section template with the length of 25m, the idea is provided for the construction of the transition section later, even if the tunnel curved surface is different and the transition section is different later, the templates of B1-B19 can be manufactured again and installed on the multifunctional two-lining trolley, and the application range of the multifunctional two-lining trolley is greatly expanded.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. Multi-functional two lining platform truck construction equipment in long and wide tunnel, including portal frame (1), its characterized in that, the equal fixedly connected with fixed plate in both sides of portal frame (1) roof outer wall, and one side outer wall of two fixed plates is fixed with pneumatic cylinder (2), two pneumatic cylinder (2) piston rod swing joint has same roof (3), the equal fixedly connected with pillar of roof outer wall of roof (3), and pillar top outer wall fixedly connected with arc structure's first template (4), the equal swing joint in both ends of first template (4) has second template (5) and the equal swing joint in one end of two second templates (5) has third template (6).
2. The multifunctional two-lining trolley construction equipment for the long and wide tunnel according to claim 1, wherein hydraulic support mechanisms (8) are arranged on two sides of the outer wall of the bottom of the portal frame (1), and a traveling mechanism (9) is arranged on the outer wall of the bottom of each hydraulic support mechanism (8).
3. The multifunctional two-lining trolley construction equipment for the long and wide tunnel according to claim 1, wherein the outer walls of two sides of the portal frame (1) are respectively and movably connected with eight screw mechanisms (7), and the other ends of the eight screw mechanisms (7) are respectively connected to the outer walls of the second template (5) and the third template (6).
4. The multifunctional secondary trolley construction equipment for the long and wide tunnel according to claim 3, wherein the screw mechanism (7) comprises a threaded pipe, and a screw is screwed on the inner wall of the threaded pipe.
5. The construction method of the multifunctional two-lining trolley construction equipment for the long and wide tunnel according to claim 1, characterized by comprising the following steps:
s1: designing a multifunctional two-lining trolley at a widening section, researching a tunnel design drawing in detail, formulating a two-lining construction scheme of an emergency parking zone according to the length and the number of emergency parking zones of a tunnel, the combination condition of the emergency parking zone and a standard section tunnel, the size of a flat curve and the like, and combining site personnel and mechanical configuration conditions, designing a trolley form, ensuring the safety, economy and reasonableness of the construction scheme, wherein the trolley design comprises trolley length determination, trolley section size determination, two-trolley connection mode design, trolley standard section walking design, trolley pouring construction design, trolley crossing cross tunnel design and gradual change section construction design;
s2: a professional manufacturer orders and checks, the processing quality and performance of the trolley are directly related to the quality of the second lining concrete of the emergency stop zone, enough attention is paid to the checking and accepting of the trolley, a trolley checking and accepting leader group is established, a specially-assigned person is irregularly sent to the manufacturer to monitor the processing quality, the trolley can be transported to the site after being successfully assembled by trial, and the trolley can be assembled outside a hole after being transported to the site so as to be used after being qualified by detection and acceptance;
s3: construction preparation, carrying out first engineering approval, and carrying out process verification to achieve equipment familiarity, exploration and improvement of processes, verification of design and construction organization schemes, important verification of various performances of the trolley, disassembly and assembly operation of the trolley, arrangement of a plug board, use of a waterproof board operation platform, problems in the concrete pouring process, personnel and mechanical configuration; according to the construction of a technological test section, carefully summarizing, analyzing and researching, and timely correcting to improve the quality and the construction level of the second lining concrete, when a tunnel is crossed and a hole is corrected, the lowest small formwork is lifted by using a hand hoist, the preparation can be completed, when the tunnel is ready to pass through a cross tunnel of a vehicle, two sections of lower formworks and a foundation jack need to be dismounted, all main oil cylinders are retracted, the traveling is rotated by 90 degrees, the traveling preparation can be completed, and after the traveling preparation is completed, a top butt bolt is dismounted to divide the trolley into two sections;
s4: the platform truck location, the platform truck targets in place the back, measures central line and elevation earlier, through upper and lower and level adjustment hydraulic system accurate positioning, prepares before the concrete is poured: the control handle respectively moves the vertical lifting oil cylinders to enable the elevation of the vault of the formwork to coincide with the elevation of the vault of the designed lining, the control handle respectively moves the lateral oil cylinders on two sides, the synchronization condition of the lateral oil cylinders on each side is observed, the throttle valve is adjusted to enable the lateral oil cylinders to be synchronized, the lateral side of the multifunctional two-lining trolley is opened to the outline position of the designed lining, whether the central line of the formwork of the trolley is coincided with the central line of the tunnel or not is retested, and whether the elevation of the vault of the; re-testing whether the side mold reaches the designed position; stopping an oil pump motor of the hydraulic station; screwing out each basic jack screw rod to tightly prop against the steel rail; screwing a horizontal locking screw rod on the cross beam; screwing the lateral screw rods at all positions; screwing each jack at the template foot; the handle is shaken to release the pressure of the lateral oil cylinder;
s5: waterproof board and reinforcing bar construction, the waterproof board installation: the workman hangs the whole ring waterproof board on hydraulic pressure arc frame on waterproof board mounting platform, through hydraulic pressure jacking to the tight subsides of hunch portion rock face, then carries out the frenulum fixed again, has solved the difficult tight rock face problem of pasting of hunch portion waterproof board, reduces concrete hunch portion and takes off, the reinforcing bar installation: the processed circumferential steel bars are placed on the arc-shaped frame, the hydraulic stroke value is determined through calculation, the positions of the circumferential steel bars can be accurately positioned, and then the steel bar spacing is adjusted to be firmly welded with the edge base embedded steel bars, so that the thickness of a steel bar protective layer can be effectively controlled, and the problem that a steel bar framework is raised in the past is solved;
s6: pouring concrete, namely pouring the concrete from bottom to top, firstly, arching after the wall, symmetrically pouring, pouring the concrete, wherein the free-falling height during pouring is not more than 1.5m, pouring the concrete through a hole reserved on a template, vibrating by adopting a high-frequency vibrator, and assisting a vibrator to ensure the compactness of the concrete, and monitoring the arch crown of the second lining of the widening section by using a second lining anti-separation monitor installed on a multifunctional second lining trolley to prevent the arch crown from being separated;
s7: demoulding, wherein the concrete strength during demoulding is 100% of the designed strength, the primary support is used for constructing the secondary lining after deformation is stable, the concrete strength during demoulding is 8.0MPa, and when the humidity is insufficient, the concrete is subjected to spray water spraying maintenance after demoulding for 14 days;
s8: the trolley travels to the first widening section, the construction effect of the second lining concrete is checked after each group of second linings, the radar detection is carried out in time, the weak link is corrected in time after the reason is analyzed, and the appearance quality of the concrete is improved.
6. The construction method of the multifunctional two-lining trolley construction equipment for the long and wide tunnel according to claim 5, wherein in the step S1, the length of the trolley is determined as follows: considering that the platform truck need pass the horizontal passageway of going with the mode of horizontal walking, combining the cross section of the horizontal hole of going with the preparation standard of platform truck template, this platform truck design comprises two sections, and every section is 4.5 meters long, under the circumstances of guaranteeing to pass through the horizontal hole of going smoothly, ensures the rationality of designing the platform truck, platform truck cross-sectional dimension's affirmation: because the trolley is put into one time, the process can not make mistakes, before the trolley design delivery manufacturer orders, a general engineer must check and check the clearance in person, and the following points are rechecked: the outline radius of the trolley is generally 5cm larger than the design for ensuring the clearance of the two linings, the ground elevation before the two linings are constructed is determined, the maximum stroke of a jacking oil cylinder of the hydraulic trolley can meet the walking requirement and the requirement of passing through a transverse hole of the trolley, the requirement of the maximum equipment clearance passing in the tunnel is determined, the section of the normal section of the tunnel and the section of the emergency stop zone are overlapped in a CAD drawing mode, the above aspects are marked in the drawing, and relevant requirements are met, and a written delivery manufacturer carries out further design.
7. The construction method of the multifunctional two-lining trolley construction equipment for the long and wide tunnel according to claim 5, wherein in S1, the trolley is designed to travel in a standard section, the central point of the trolley and the central point of a cross hole of the trolley must be aligned before the trolley travels in sections, after the alignment is completed, two rows of steel rails in the middle of the trolley are laid, and then the integral trolley lifting hydraulic system is started to enable the middle rail wheels to just fall to the rail surface to play a supporting role; then, connecting bolts in the middle of the trolley are dismantled from top to bottom, finally, pins at the position of a cross beam are taken down, the trolley is separated into two independent trolleys from the middle, then, the trolleys pass through a track laying system and a motor walking system arranged on the trolley, the two independent trolleys are opened to the next widening section one by one, after walking to a specified position, all car stoppers are installed and steel rails are locked, an oblique iron is arranged between a walking wheel and the steel rails, at least one part is arranged at each side, one piece is respectively arranged at the front and the back of each part, the oblique iron is not allowed to be replaced by a wood strip, a control handle respectively acts two translation oil cylinders to ensure that the center line of a template is superposed with the center line of a tunnel, at the moment, the quick switching of the positions of the multifunctional two-lined trolleys at different widening sections is realized, the pouring design of the trolleys is realized, in order to reduce the problem of easy slab staggering at the seams of the two-lined construction, side supports are specially, in order to avoid the situation that the joint of the secondary lining of the main hole forming section is not tightly attached after the trolley is centered, an iron plate with the thickness of 2 mm is welded on the top of the trolley template, and the joint of the trolley template and the main hole is poured without obvious slab staggering.
8. The construction method of the multifunctional two-lined trolley construction equipment for the long and wide tunnel according to claim 5, wherein in S1, the trolley is designed to pass through the car-running crosshole, in order to reduce cost, the multifunctional two-lined trolley for the widening section has the capability of passing through the car-running crosshole, when the multifunctional two-lined trolley is constructed on the widening section of the left hole, the capability of passing through the car-running crosshole to widen the second lining of the right hole can be carried out, so that the construction requirement can be met only by respectively arranging 1 multifunctional two-lined trolley at the inlet and outlet ends, the construction cost is greatly reduced, when the multifunctional two-lined trolley passes through the car-running crosshole, two sections of templates and basic jacks at the lower side are removed, the trolley is divided into 2 sections, the main oil cylinder is completely withdrawn, the travelling wheels are rotated by 90 degrees, external force traction is used, the multifunctional two-lined trolley can pass through the car-running crosshole, the construction design of the gradual change section, the shape and the size of the gradual change section, the method can ensure that wind passing through an inclined shaft and a vertical shaft cannot generate vortex, reduce wind loss and damage to the wall surface of a tunnel due to wind, the gradual change section is gradually changed due to the section, the existing two-lining trolley pouring template cannot be suitable, if a support is erected on the original two-lining trolley, manpower and time are consumed, and the construction progress is influenced, therefore, the item part ensures that the multifunctional two-lining trolley has the work capacity of construction on the gradual change section according to the characteristics of the gradual change sections with different lengths, the curved surfaces of the multifunctional two-lining trolley and the gradual change section are additionally attached by adding small templates on the original trolley template, the cost is reduced, the construction quality is improved, the gradual change section has a certain linear change rule, and only one B19 template is different from the gradual change section template with the length of 30m and the gradual change section template with the length of 25m, so as to provide an idea for the construction of the gradual change section, even if the tunnel curved surface is different and the transition section is different later, the templates of B1-B19 can be manufactured again and installed on the multifunctional two-lining trolley, and the application range of the multifunctional two-lining trolley is greatly expanded.
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| CN113137248A (en) * | 2021-05-10 | 2021-07-20 | 江西省交通科学研究院有限公司 | Multifunctional tunnel lining trolley and using method |
| CN113266397A (en) * | 2021-05-27 | 2021-08-17 | 中铁十九局集团第三工程有限公司 | Hydraulic formwork trolley for small-section chamber lining and construction method |
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| CN113137248A (en) * | 2021-05-10 | 2021-07-20 | 江西省交通科学研究院有限公司 | Multifunctional tunnel lining trolley and using method |
| CN113137248B (en) * | 2021-05-10 | 2024-05-17 | 江西省交通科学研究院有限公司 | Multifunctional tunnel lining trolley and use method thereof |
| CN113266397A (en) * | 2021-05-27 | 2021-08-17 | 中铁十九局集团第三工程有限公司 | Hydraulic formwork trolley for small-section chamber lining and construction method |
| CN113665279A (en) * | 2021-07-15 | 2021-11-19 | 南通盛迈思科技有限公司 | Large landscape mold reinforcing and shaping method |
| CN115961973A (en) * | 2022-07-15 | 2023-04-14 | 中交一公局集团有限公司 | Tunnel lining trolley and tunnel construction method |
| CN116517596A (en) * | 2023-06-27 | 2023-08-01 | 中铁六局集团太原铁路建设有限公司 | Tunnel supporting structure and supporting method |
| CN116517596B (en) * | 2023-06-27 | 2023-10-10 | 中铁六局集团太原铁路建设有限公司 | Tunnel supporting structure and supporting method |
| CN117449864A (en) * | 2023-12-22 | 2024-01-26 | 洛阳高飞桥隧机械股份有限公司 | Tunnel widening driving protection construction device and tunnel widening construction method |
| CN117449864B (en) * | 2023-12-22 | 2024-03-05 | 洛阳高飞桥隧机械股份有限公司 | Tunnel widening driving protection construction device and tunnel widening construction method |
| CN117967366A (en) * | 2024-04-01 | 2024-05-03 | 中国建筑设计研究院有限公司 | Two-lining construction trolley and construction method |
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