CN115126504A - Integral molding construction method for secondary lining of oversized section tunnel - Google Patents
Integral molding construction method for secondary lining of oversized section tunnel Download PDFInfo
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- CN115126504A CN115126504A CN202210644090.2A CN202210644090A CN115126504A CN 115126504 A CN115126504 A CN 115126504A CN 202210644090 A CN202210644090 A CN 202210644090A CN 115126504 A CN115126504 A CN 115126504A
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 238000000465 moulding Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 53
- 239000004567 concrete Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 32
- 230000000903 blocking effect Effects 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 19
- 238000009415 formwork Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
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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
- E21D11/102—Removable shuttering; Bearing or supporting devices 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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Architecture (AREA)
- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The application relates to a construction method for integrally molding a secondary lining of a tunnel with an oversized section, which comprises the following steps: prefabricating: making an arc-shaped template at the top of the corresponding trolley, and matching the arc-shaped template with the section of the tunnel; positioning and reinforcing: driving the trolley into the tunnel, aligning the arc-shaped template and the top wall of the tunnel to form an arc-shaped space, and installing a reinforcing steel bar frame in the arc-shaped space; end face sealing step: the method comprises the following steps that plugging devices are arranged at two ends of an arc-shaped template on a trolley, openings at two ends of an arc-shaped space are automatically plugged through the plugging devices, and release agents are coated on the arc-shaped template and one side, close to the arc-shaped space, of the plugging devices before plugging; pouring: opening a pouring opening of the arc-shaped template, and pouring concrete into the arc-shaped space; a step of removing the mold: and after the concrete is solidified, removing the plugging device, continuously driving the trolley inwards, and repeating the previous steps. This application has the effect of the comparatively trouble problem of construction when improving secondary lining.
Description
Technical Field
The application relates to the field of tunnel construction technology, in particular to a secondary lining integral molding construction method for an oversized section tunnel.
Background
The secondary lining is a molded concrete or reinforced concrete lining applied on the inner side of the primary support in tunnel engineering construction, and forms a composite lining together with the primary support. In contrast, secondary lining and primary support refer to inner lining constructed by concrete and other materials under the condition that the tunnel is subjected to primary support, so as to achieve the effects of reinforcing support, optimizing a route waterproof and drainage system, beautifying appearance, conveniently setting facilities such as communication, illumination, monitoring and the like, and adapt to the requirement of modern highway tunnel construction.
In secondary lining's in-process can drive into the tunnel with the platform truck, then leave the arc space of concreting between the arc template at platform truck top and the tunnel inner wall, seal it through the polylith plank at the both ends in arc space after that, at last toward pour into the concrete in the arc space can.
In view of the above-mentioned related art, the inventor believes that when the two ends of the arc-shaped space are closed by the wooden boards in the secondary lining, the wooden boards are manually attached to each other one by one to be installed, thereby causing the operation to be complicated.
Disclosure of Invention
In order to solve the problem that construction is troublesome during secondary lining, the application provides a secondary lining integral molding construction method for a tunnel with an oversized section.
The application provides a secondary lining integral molding construction method for a tunnel with an oversized section, which adopts the following technical scheme:
a construction method for integrally molding a secondary lining of a tunnel with an oversized section comprises the following steps:
prefabricating: correspondingly making an arc-shaped template at the top of the trolley according to the size of the section of the tunnel, and matching the arc-shaped template with the section of the tunnel;
positioning and reinforcing: driving the trolley into the tunnel, aligning the arc-shaped template with the top wall of the tunnel to form an arc-shaped space, and installing a reinforcing steel bar frame in the arc-shaped space;
end face sealing step: the method comprises the following steps that plugging devices are arranged at two ends of an arc-shaped template on a trolley, openings at two ends of an arc-shaped space are automatically plugged through the plugging devices, and release agents are coated on the arc-shaped template and one side, close to the arc-shaped space, of the plugging devices before plugging;
pouring: opening a pouring opening of the arc-shaped template, and pouring concrete into the arc-shaped space;
a step of removing the mold: and after the concrete is solidified, removing the plugging device, continuously driving the trolley inwards, and repeating the previous steps.
By adopting the technical scheme, in the steps, after the arc-shaped template at the top of the trolley is opposite to the inner wall surface of the tunnel to form the arc-shaped space, the openings at the two ends of the arc-shaped space can be plugged only by the plugging device, and the openings at the two ends of the arc-shaped space do not need to be plugged by the wood plates manually, so that the labor intensity of workers is greatly reduced, and the plugging is very easy; the openings at the two ends of the arc-shaped space are plugged through the plugging device, and the arc-shaped space can be rapidly moved inwards to continue pouring after pouring is finished, so that the plugging device is very convenient.
Optionally, the plugging device comprises a plugging assembly and a driving assembly, the driving assembly is mounted at the end of the trolley, and the plugging assembly is mounted on the driving assembly; the driving assembly is used for driving the blocking assembly to move, and the blocking assembly is used for sealing and covering the end opening of the arc-shaped space after moving.
Through adopting above-mentioned technical scheme, let the shutoff subassembly remove through drive assembly for the shutoff subassembly can carry out the adaptability under artificial manipulation and remove, and drive assembly can be right with the cooperation of shutoff subassembly.
Optionally, the plugging assembly includes a side plugging portion and a top plugging portion, and the driving assembly includes a top driving portion and two side driving portions; the top driving part is used for driving the top plugging part to move in the vertical direction, the two side driving parts are used for driving the two side plugging parts to approach to each other or to be away from each other, and the two side plugging parts and the top plugging part plug the end opening of the arc-shaped space.
By adopting the technical scheme, the top plugging part is vertically moved upwards to the end opening of the arc-shaped space through the top driving part, and the end opening of the arc-shaped space is partially shielded; then, the two side plugging parts are driven to be away from each other by the driving parts at the two sides, and the two side plugging parts are moved to the position for covering the opening at the end part of the arc-shaped space; after the two side plugging portions and the top plugging portion are moved, the whole arc-shaped space can be completely plugged, and the end opening of the plugging arc-shaped space is convenient to plug.
Optionally, the top driving part comprises a jack and a connecting rod, the jack is mounted at the end of the trolley, and a piston rod of the jack extends vertically upwards; the connecting rod is coaxially arranged on a piston rod of the jack; the top plugging portion comprises an arc-shaped top plate, one end, far away from the jack, of the connecting rod is connected with the arc-shaped top plate, and the radian of the arc-shaped top plate is identical to that of the cross section of the arc-shaped space.
Through adopting above-mentioned technical scheme, start the jack for the piston rod of jack is vertical upwards to be extended, thereby upwards extends the connecting rod vertically and is pushing up arc-shaped roof and remove, and then lets arc-shaped roof be close to the tip opening part in arc space gradually, reaches to let the arc-shaped roof of drive remove comparatively convenient and audio-visual effect.
Optionally, the two-side driving part comprises a rotating motor, a driving gear, a two-way threaded rod and a driven gear; the rotating motor is arranged on the trolley, and the driving gear is coaxially arranged on an output shaft of the rotating motor; the side edge plugging part comprises arc-shaped side plates arranged at two sides of the arc-shaped top plate, and threaded sleeves are arranged on the two arc-shaped side plates; the bidirectional threaded rod is horizontally and rotationally connected to the end part of the trolley, and the threaded sleeves on the two arc-shaped side plates are respectively in threaded connection with two rod sections with opposite thread turning directions of the bidirectional threaded rod; the driven gear is coaxially arranged in the middle of the bidirectional threaded rod, and the driving gear is meshed with the driven gear; the radian of the arc-shaped side plate is the same as that of the arc-shaped space, and when the arc-shaped side plate and the arc-shaped top plate are abutted against the inner wall surface of the tunnel, the end part of the arc-shaped space is completely shielded.
By adopting the technical scheme, the rotating motor is started, so that the output shaft of the rotating motor drives the driving gear to rotate, the driven gear rotates, and the driven gear can drive the bidirectional threaded rod to rotate after rotating; the threaded sleeve in threaded fit with the bidirectional threaded rod can move along the length direction of the bidirectional threaded rod under the condition that the bidirectional threaded rod rotates, namely, the two arc-shaped side plates are enabled to approach or separate from each other on the bidirectional threaded rod; when keeping away from each other, two arc curb plates can finally laminate on the internal face in tunnel, and after two arc curb plates and an arc roof all laminated on the internal face in tunnel, the tip opening in whole arc space was all sheltered from, reached the automatic comparatively convenient effect of sheltering from.
Optionally, a guide rail is further arranged on the trolley, the length direction of the guide rail is consistent with the length direction of the bidirectional threaded rod, guide wheels are arranged at the plate edges of the arc-shaped side plates, which are far away from the inner wall surface of the tunnel, and the guide wheels are in rolling fit with the guide rail.
Through adopting above-mentioned technical scheme, the effect of bearing not only can be played to the arc curb plate to the setting up of guided way and leading wheel, can play the effect of stable direction to the removal of arc curb plate on the horizontal direction moreover.
Optionally, a first sealing rubber strip is arranged on one side, close to the inner wall surface of the tunnel, of the arc-shaped side plate, a second sealing rubber strip is arranged on one end, close to the arc-shaped top plate, of the arc-shaped side plate, an automatic abutting assembly is arranged in the arc-shaped side plate, and when the first sealing rubber strip abuts against the inner wall surface of the tunnel, the automatic abutting assembly automatically abuts against the second sealing rubber strip between the arc-shaped side plate and the arc-shaped top plate.
By adopting the technical scheme, after the arc-shaped side plate is abutted to the inner wall surface of the tunnel, the first sealing rubber strip can firstly contact the inner wall surface of the tunnel to block a gap between the arc-shaped side plate and the inner wall surface of the tunnel, so that the sealing property is improved; and automatic butt subassembly can be supported at first sealing rubber strip and start after on tunnel internal face to let the second sealing rubber strip support tightly in the gap between arc curb plate and arc roof, give the gap between arc curb plate and the arc roof and plug, improve the sealed effect of arc space port shutoff.
Optionally, the automatic abutting assembly comprises a first abutting rod, a second abutting rod, a first spring and a second spring; a first sliding cavity is horizontally formed in the arc-shaped side plate, the first abutting rod is inserted into the first sliding cavity in a sliding mode, a containing cavity is formed in one side, close to the arc-shaped side plate, of the first sealing rubber strip, one end of the first abutting rod is located in the containing cavity, the first spring is sleeved on the first abutting rod and located in the first sliding cavity, and the first spring always has the tendency of pushing one end of the first abutting rod into the containing cavity;
a second sliding cavity is vertically formed in the arc-shaped side plate, the second sliding cavity is communicated with the first sliding cavity, the second abutting rod is slidably inserted into the second sliding cavity, the lower end of the second abutting rod is located in the first sliding cavity, a placing groove is formed in the end portion, close to the arc-shaped top plate, of the arc-shaped side plate, the second sealing rubber strip is placed in the placing groove, one end, far away from the first sliding cavity, of the second abutting rod extends into the placing groove, a pushing plate is arranged at one end, located in the placing groove, of the second abutting rod, and the pushing plate is attached to the second sealing rubber strip; the second spring is sleeved on the second abutting rod and is positioned in the second sliding cavity, and the second spring always has the tendency of pushing the second abutting rod to the vertical downward direction;
the first butting rod is provided with an inclined pushing surface at one end in the first sliding cavity, the second butting rod is provided with a pushed surface corresponding to the inclined pushing surface at one end in the first sliding cavity, and the inclined pushing surface is in sliding fit with the pushed surface.
By adopting the technical scheme, when the first sealing rubber strip is abutted to the inner wall surface of the tunnel, the first sealing rubber strip can be extruded and deformed, the thickness of the first sealing rubber strip is reduced, and one end of the first abutting rod can be abutted into the first sliding cavity from the accommodating cavity; when the first abutting rod enters the first sliding cavity along with the extrusion, the inclined pushing surface at the end part of the first abutting rod can be abutted against the pushed surface on the second abutting rod, and along with the continuous movement of the first abutting rod, the inclined pushing surface can push the pushed surface into the second sliding cavity from the first sliding cavity; the kickboard at second butt joint pole top can be released the second rubber strip from the standing groove and tightly contradict on the end wall of arc roof this moment to plug up the gap between arc curb plate and the arc roof, and then reach simultaneously and automatically all plug up the effect with the gap between arc curb plate and the tunnel internal face and the gap between arc curb plate and the arc roof.
Optionally, a top sealing strip is covered on the upper arc edge of the arc-shaped top plate.
Through adopting above-mentioned technical scheme, the setting of top sealing strip also can let arc roof butt plug the gap between arc roof and the tunnel internal face on the internal face in tunnel back, improves the sealed effect of arc space port.
Optionally, a driving box is arranged on the trolley, and the driving box is used for shielding the meshing part of the driving gear and the driven gear.
Through adopting above-mentioned technical scheme, the drive box can shelter from driving gear and driven gear's meshing department, avoids external factor to influence driving gear and driven gear's normal meshing.
In summary, the present application includes at least one of the following beneficial technical effects:
1. after the arc-shaped template at the top of the trolley is opposite to the inner wall surface of the tunnel to form an arc-shaped space, the openings at the two ends of the arc-shaped space can be plugged only by the plugging device, and the openings at the two ends of the arc-shaped space do not need to be manually plugged by wood plates, so that the labor intensity of workers is greatly reduced, and plugging is very easy; the openings at the two ends of the arc-shaped space are plugged by the plugging device, and the arc-shaped space can also move inwards quickly after pouring is finished to continue pouring, so that the method is very convenient;
2. starting the rotating motor, so that an output shaft of the rotating motor drives the driving gear to rotate, and further the driven gear rotates, and the driven gear can drive the bidirectional threaded rod to rotate after rotating; the threaded sleeve in threaded fit with the bidirectional threaded rod can move along the length direction of the bidirectional threaded rod under the condition that the bidirectional threaded rod rotates, namely, the two arc-shaped side plates are enabled to approach or separate from each other on the bidirectional threaded rod; when the two arc-shaped side plates are far away from each other, the two arc-shaped side plates are finally attached to the inner wall surface of the tunnel, and after the two arc-shaped side plates and the arc-shaped top plate are attached to the inner wall surface of the tunnel, the end opening of the whole arc-shaped space is blocked, so that the effect of automatic blocking and convenience is achieved;
3. when the first sealing rubber strip abuts against the inner wall surface of the tunnel, the first sealing rubber strip can be extruded and deformed, the thickness of the first sealing rubber strip is reduced, and one end of the first abutting rod can be abutted into the first sliding cavity from the accommodating cavity; when the first abutting rod enters the first sliding cavity along with the extrusion, the inclined pushing surface at the end part of the first abutting rod can abut against the pushed surface on the second abutting rod, and along with the continuous movement of the first abutting rod, the inclined pushing surface can push the pushed surface into the second sliding cavity from the first sliding cavity; the kickboard at second butt joint pole top can be released the second rubber strip from the standing groove and tightly contradict on the end wall of arc roof this moment to plug up the gap between arc curb plate and the arc roof, and then reach simultaneously and automatically all plug up the effect with the gap between arc curb plate and the tunnel internal face and the gap between arc curb plate and the arc roof.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present application.
Fig. 2 is a partial schematic view of an embodiment of the present application.
Figure 3 is a front cross-sectional view of an embodiment of the present application showing an occlusion device.
Fig. 4 is an enlarged view of a portion a in fig. 3.
Description of reference numerals: 1. a trolley; 11. a drive box; 2. an arc-shaped template; 3. a plugging device; 4. a plugging component; 41. a side edge blocking part; 411. an arc-shaped side plate; 4111. a first sealing rubber strip; 41111. an accommodating chamber; 4112. a second sealing rubber strip; 4113. a first sliding chamber; 4114. a second sliding chamber; 4115. a placement groove; 42. a top blocking portion; 421. an arc-shaped top plate; 4211. a top seal strip; 5. a drive assembly; 51. a top drive section; 511. a jack; 512. a connecting rod; 52. two side driving parts; 521. rotating the motor; 522. a driving gear; 523. a bidirectional threaded rod; 524. a driven gear; 6. a threaded sleeve; 7. a guide rail; 8. a guide wheel; 9. an automatic abutting assembly; 91. a first abutting rod; 911. obliquely pushing the surface; 92. a second butting rod; 921. a pushed surface; 93. a first spring; 94. a second spring; 10. and pushing the plate.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a construction method for integrally molding a secondary lining of a tunnel with an oversized section, which comprises the following prefabricating steps: correspondingly making an arc-shaped template 2 at the top of the trolley 1 according to the size of the tunnel section, and matching the arc-shaped template 2 with the tunnel section;
positioning and reinforcing: driving the trolley 1 into the tunnel, aligning the arc-shaped template 2 with the top wall of the tunnel to form an arc-shaped space, and installing a reinforcing steel bar frame in the arc-shaped space;
end face sealing step: the method comprises the following steps that plugging devices 3 are arranged at two ends of an arc-shaped template 2 on a trolley 1, openings at two ends of an arc-shaped space are automatically plugged through the plugging devices 3, and a release agent is coated on the arc-shaped template 2 and one side, close to the arc-shaped space, of the plugging devices 3 before plugging;
pouring: opening a pouring opening of the arc-shaped template 2, and pouring concrete into the arc-shaped space;
a step of removing the mold: after the concrete is solidified, the plugging device 3 is removed, the trolley 1 is driven inwards continuously, and the previous steps are repeated.
With reference to fig. 1 and 2, in the above steps, the plugging device 3 includes a plugging assembly 4 and a driving assembly 5, the driving assembly 5 is installed at an end portion of the trolley 1, in this embodiment, the end portion of the trolley 1 refers to front and rear ends of the trolley 1 in the moving direction of the tunnel; the plugging component 4 is arranged on a driving component 5, the driving component 5 is used for driving the plugging component 4 to move, and the plugging component 4 is used for sealing and covering the end opening of the arc-shaped space after moving. The back is all plugged up to the opening at arc space both ends to shutoff subassembly 4, then is difficult for taking place to reveal when pouring the concrete in the arc space.
With reference to fig. 1 and 2, the plugging member 4 includes a lateral plugging portion 41 and a top plugging portion 42, and the driving member 5 includes a top driving portion 51 and two side driving portions 52; the top driving portion 51 is used for driving the top blocking portion 42 to move in the vertical direction, the two side driving portions 52 are used for driving the two side blocking portions 41 to approach to or move away from each other, and the two side blocking portions 41 and the top blocking portion 42 block the end opening of the arc-shaped space. The top plugging part 42 is vertically moved upwards to the opening at the end part of the arc-shaped space through the top driving part 51, and the opening at the end part of the arc-shaped space is partially shielded; then, the two side plugging parts 41 are driven to be away from each other by the two side driving parts 52, and the two side plugging parts 41 are moved to the positions covering the end openings of the arc-shaped space; after the two side plugging portions 41 and the top plugging portion 42 are moved, the whole arc-shaped space can be completely plugged, and the effect of plugging the end opening of the arc-shaped space conveniently is achieved.
As shown in fig. 1 and 2, the top driving part 51 includes a jack 511 and a connecting rod 512, the jack 511 is mounted on the end of the trolley 1, and a piston rod of the jack 511 extends vertically upward; the connecting rod 512 is coaxially arranged on the piston rod of the jack 511; the top blocking part 42 comprises an arc-shaped top plate 421, one end of the connecting rod 512, which is far away from the jack 511, is connected with the arc-shaped top plate 421, and the radian of the arc-shaped top plate 421 is the same as the section radian of the arc-shaped space. And it is worth noting that the side surface of the arc-shaped formwork 2 is also laid with a sealing strip, and the sealing strip is extruded in the process that the arc-shaped top plate 421 vertically moves upwards, so that a gap between the arc-shaped top plate 421 and the side surface of the arc-shaped formwork 2 is blocked, and leakage is not easy to occur. Moreover, the top sealing strip 4211 covers the upper arc edge of the arc-shaped top plate 421, and the arrangement of the top sealing strip 4211 can also plug the gap between the arc-shaped top plate 421 and the inner wall surface of the tunnel after the arc-shaped top plate 421 abuts against the inner wall surface of the tunnel, so that the sealing effect of the arc-shaped space port is improved.
With reference to fig. 1 and 2, the two-side driving unit 52 includes a rotary motor 521, a driving gear 522, a bidirectional threaded rod 523, and a driven gear 524; the rotating motor 521 is arranged on the trolley 1, and the driving gear 522 is coaxially arranged on the output shaft of the rotating motor 521; the side edge plugging part 41 comprises arc-shaped side plates 411 arranged at two sides of an arc-shaped top plate 421, and threaded sleeves 6 are arranged on the two arc-shaped side plates 411; the bidirectional threaded rod 523 is horizontally and rotatably connected to the end of the trolley 1; the threaded sleeves 6 on the two arc-shaped side plates 411 are respectively in threaded connection with two rod sections with opposite thread turning directions of the two-way threaded rod 523; the driven gear 524 is coaxially arranged in the middle of the bidirectional threaded rod 523, and the driving gear 522 is meshed with the driven gear 524; the radian of arc curb plate 411 is the same with the radian in arc space, and when arc curb plate 411 and arc roof 421 all contradicted on the internal face in tunnel, the tip in arc space was sheltered from completely. It should be noted that when the arc-shaped side plate 411 moves to the side of the arc-shaped formwork 2, the sealing strip on the side of the arc-shaped formwork 2 is also pressed, so that the gap between the arc-shaped side plate 411 and the arc-shaped formwork 2 is blocked. Moreover, the trolley 1 is further provided with a guide rail 7, the length direction of the guide rail 7 is consistent with that of the bidirectional threaded rod 523, a guide wheel 8 is arranged at the plate edge of the arc-shaped side plate 411, which is far away from the inner wall surface of the tunnel, and the guide wheel 8 is in rolling fit with the guide rail 7.
The rotating motor 521 is started, so that the output shaft of the rotating motor 521 drives the driving gear 522 to rotate, the driven gear 524 rotates, and the driven gear 524 drives the bidirectional threaded rod 523 to rotate after rotating; the threaded sleeve 6 in threaded fit with the bidirectional threaded rod 523 can move along the length direction of the bidirectional threaded rod 523 under the condition that the bidirectional threaded rod 523 rotates, namely, the two arc-shaped side plates 411 are enabled to approach or separate from each other on the bidirectional threaded rod 523; when keeping away from each other, two arc curb plates 411 can finally laminate on the internal face in tunnel, and after two arc curb plates 411 and an arc roof 421 all laminated on the internal face in tunnel, the tip opening in whole arc space was all shielded and is kept off, reached the automatic comparatively convenient effect of sheltering from. And the setting of guided way 7 and leading wheel 8 not only can play the effect of bearing to arc curb plate 411, can play the effect of stable direction to the removal of arc curb plate 411 on the horizontal direction moreover.
With reference to fig. 2 and 3, in this embodiment, after the two arc-shaped side plates 411 and the arc-shaped top plate 421 are moved in place, the end opening of the arc-shaped space can be completely blocked, and a part of plate surfaces of the arc-shaped side plates 411 and the arc-shaped top plate 421 are pressed and attached to the sealing strips on the side surfaces of the arc-shaped formwork 2. The carriage 1 is provided with a drive box 11, and the drive box 11 is used for shielding the meshing part of the driving gear 522 and the driven gear 524; and the bidirectional threaded rod 523 is rotatably disposed on the driving case 11, that is, the bidirectional threaded rod 523 penetrates through the driving case 11. That is, the driving case 11 can shield the meshing part between the driving gear 522 and the driven gear 524, thereby preventing external factors from affecting the normal meshing between the driving gear 522 and the driven gear 524.
Combine fig. 3, 4, one side that is close to tunnel internal face on the arc curb plate 411 is provided with first sealing rubber strip 4111, and the one end that is close to arc roof 421 on the arc curb plate 411 is provided with second sealing rubber strip 4112, is provided with automatic butt subassembly 9 in the arc curb plate 411, and when first sealing rubber strip 4111 supported tightly on tunnel internal face, automatic butt subassembly 9 supported tightly second sealing rubber strip 4112 between arc curb plate 411 and arc roof 421 automatically.
Specifically, with reference to fig. 3 and 4, the automatic abutting assembly 9 includes a first abutting rod 91, a second abutting rod 92, a first spring 93 and a second spring 94; a first sliding cavity 4113 is horizontally formed in the arc-shaped side plate 411, the first butt rod 91 is inserted into the first sliding cavity 4113 in a sliding manner, an accommodating cavity 41111 is formed in one side, close to the arc-shaped side plate 411, of the first sealing rubber strip 4111, one end of the first butt rod 91 is located in the accommodating cavity 41111, the first spring 93 is sleeved on the first butt rod 91 and located in the first sliding cavity 4113, a first sliding cavity is formed in the first sliding cavity 4113 in a communicating manner, a sliding plate is arranged on a rod section, located in the first sliding cavity, of the first butt rod 91, one end of the first spring 93 is abutted to the sliding plate, the other end of the first spring is abutted to the inner wall of the first sliding cavity, and the first spring 93 always has a tendency of pushing one end of the first butt rod 91 into the accommodating cavity 41111; a second sliding cavity 4114 is vertically formed in the arc-shaped side plate 411, the second sliding cavity 4114 is communicated with the first sliding cavity 4113, a second abutting rod 92 is inserted into the second sliding cavity 4114 in a sliding manner, the lower end of the second abutting rod 92 is located in the first sliding cavity 4113, a placing groove 4115 is formed in the end portion, close to the arc-shaped top plate 421, of the arc-shaped side plate 411, a second sealing rubber strip 4112 is placed in the placing groove 4115, one end, far away from the first sliding cavity 4113, of the second abutting rod 92 extends into the placing groove 4115, a pushing plate 10 is arranged at one end, located in the placing groove 4115, of the second abutting rod 92, and the pushing plate 10 is attached to the second sealing rubber strip 4112; the second spring 94 is sleeved on the second abutting rod 92 and is located in the second sliding cavity 4114, the arrangement of the second spring 94 is similar to that of the first spring 93 in the first sliding cavity 4113, and the second spring 94 always has a tendency of pushing the second abutting rod 92 in a vertical downward direction; an inclined pushing surface 911 is arranged at one end of the first abutting rod 91 in the first sliding cavity 4113, a pushed surface 921 corresponding to the inclined pushing surface 911 is arranged at one end of the second abutting rod 92 in the first sliding cavity 4113, and the inclined pushing surface 911 is in sliding fit with the pushed surface 921.
When the first sealing rubber strip 4111 abuts against the inner wall surface of the tunnel, the first sealing rubber strip 4111 is extruded and deformed, and at this time, the thickness of the first sealing rubber strip 4111 is reduced, so that one end of the first abutting rod 91 abuts against the first sliding cavity 4113 from the accommodating cavity 41111; when the first abutting rod 91 is pressed into the first sliding cavity 4113, the inclined pushing surface 911 at the end of the first abutting rod 91 will abut against the pushed surface 921 on the second abutting rod 92, and with the continued movement of the first abutting rod 91, the inclined pushing surface 911 will push the pushed surface 921 from the first sliding cavity 4113 into the second sliding cavity 4114; at this moment, the pushing plate 10 at the top of the second abutting rod 92 can push out the second rubber strip from the placing groove 4115 and tightly abut against the end wall of the arc-shaped top plate 421, so that the gap between the arc-shaped side plate 411 and the arc-shaped top plate 421 is blocked, and then the effect of simultaneously and automatically blocking the gap between the arc-shaped side plate 411 and the inner wall surface of the tunnel and the gap between the arc-shaped side plate 411 and the arc-shaped top plate 421 is achieved.
The implementation principle of the secondary lining integral molding construction method for the tunnel with the oversized section in the embodiment of the application is as follows: firstly, moving the trolley 1 to the lower part of the inner wall surface of the tunnel to enable the arc-shaped template 2 to be opposite to the inner wall surface of the tunnel, then starting the jack 511 to jack the arc-shaped top plate 421 coated with the release agent vertically upwards to be attached to the inner wall surface of the tunnel; then, the rotating motor 521 is started again to rotate the bidirectional threaded rod 523, so that the two arc-shaped side plates 411 coated with the release agent are simultaneously far away from and connected to the inner wall surface of the tunnel. When the two arc-shaped side plates 411 and the arc-shaped top plate 421 are abutted against the inner wall surface of the tunnel, the end opening of the arc-shaped space is completely shielded by the two arc-shaped side plates 411 and the arc-shaped top plate 421, and then concrete in the arc-shaped space can be poured; after pouring and solidifying, the arc-shaped side plates 411 and the arc-shaped top plate 421 are moved to the position where the opening at the end part of the arc-shaped space is not shielded, the trolley 1 is continuously started in the tunnel, and the next part of the inner wall surface of the tunnel is continuously poured.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A construction method for integral molding of a secondary lining of a tunnel with an oversized section is characterized by comprising the following steps: the method comprises the following steps:
prefabricating: correspondingly making an arc-shaped template (2) at the top of the trolley (1) according to the size of the section of the tunnel, and matching the arc-shaped template (2) with the section of the tunnel;
positioning and reinforcing: driving the trolley (1) into the tunnel, aligning the arc-shaped template (2) with the top wall of the tunnel to form an arc-shaped space, and installing a reinforcing steel bar frame in the arc-shaped space;
end face sealing step: the blocking devices (3) are arranged at two ends of the arc-shaped template (2) on the trolley (1), openings at two ends of the arc-shaped space are automatically blocked through the blocking devices (3), and release agents are coated on the arc-shaped template (2) and one side, close to the arc-shaped space, of the blocking devices (3) before blocking;
pouring: opening a pouring opening of the arc-shaped template (2), and pouring concrete into the arc-shaped space;
a step of removing the mold: after the concrete is solidified, the plugging device (3) is removed, the trolley (1) is continuously driven inwards, and the previous steps are repeated.
2. The integral construction method for the secondary lining of the ultra-large section tunnel according to claim 1, which is characterized in that: the plugging device (3) comprises a plugging component (4) and a driving component (5), the driving component (5) is installed at the end part of the trolley (1), and the plugging component (4) is installed on the driving component (5); the driving assembly (5) is used for driving the plugging assembly (4) to move, and the plugging assembly (4) is used for sealing and covering the end opening of the arc-shaped space after moving.
3. The integral construction method for the secondary lining of the extra-large section tunnel according to claim 2, characterized in that: the plugging component (4) comprises a side plugging part (41) and a top plugging part (42), and the driving component (5) comprises a top driving part (51) and two side driving parts (52); the top driving part (51) is used for driving the top plugging part (42) to move in the vertical direction, the two side driving parts (52) are used for driving the two side plugging parts (41) to approach to each other or to be away from each other, and the two side plugging parts (41) and the top plugging part (42) plug the end opening of the arc-shaped space.
4. The integral molding construction method for the secondary lining of the ultra-large section tunnel according to claim 3, characterized in that: the top driving part (51) comprises a jack (511) and a connecting rod (512), the jack (511) is installed at the end part of the trolley (1), and a piston rod of the jack (511) extends vertically upwards; the connecting rod (512) is coaxially arranged on a piston rod of the jack (511); the top plugging portion (42) comprises an arc-shaped top plate (421), one end, far away from the jack (511), of the connecting rod (512) is connected with the arc-shaped top plate (421), and the radian of the arc-shaped top plate (421) is identical to the section radian of the arc-shaped space.
5. The integral molding construction method for the secondary lining of the ultra-large section tunnel according to claim 4, wherein the construction method comprises the following steps: the two-side driving part (52) comprises a rotating motor (521), a driving gear (522), a bidirectional threaded rod (523) and a driven gear (524); the rotating motor (521) is arranged on the trolley (1), and the driving gear (522) is coaxially arranged on an output shaft of the rotating motor (521); the side edge plugging part (41) comprises arc-shaped side plates (411) arranged on two sides of an arc-shaped top plate (421), and threaded sleeves (6) are arranged on the two arc-shaped side plates (411); the bidirectional threaded rod (523) is horizontally and rotatably connected to the end part of the trolley (1), and the threaded sleeves (6) on the two arc-shaped side plates (411) are respectively in threaded connection with two rod sections of the bidirectional threaded rod (523) with opposite thread turning directions; the driven gear (524) is coaxially arranged in the middle of the bidirectional threaded rod (523), and the driving gear (522) is meshed with the driven gear (524); the radian of arc curb plate (411) is the same with the radian in arc space arc curb plate (411) and arc roof (421) all contradict when on the internal wall in tunnel, the tip in arc space is sheltered from completely.
6. The integral molding construction method for the secondary lining of the ultra-large section tunnel according to claim 5, wherein the construction method comprises the following steps: the trolley (1) is further provided with a guide rail (7), the length direction of the guide rail (7) is consistent with that of the bidirectional threaded rod (523), guide wheels (8) are arranged at the plate edges of the arc-shaped side plates (411) far away from the inner wall surface of the tunnel, and the guide wheels (8) are matched with the guide rail (7) in a rolling mode.
7. The integral molding construction method for the secondary lining of the ultra-large section tunnel according to claim 5, wherein the construction method comprises the following steps: one side that is close to tunnel internal face on arc curb plate (411) is provided with first sealing rubber strip (4111), the one end that is close to arc roof (421) on arc curb plate (411) is provided with second sealing rubber strip (4112), be provided with automatic butt subassembly (9) in arc curb plate (411), when first sealing rubber strip (4111) supports tightly on tunnel internal face, automatic butt subassembly (9) support second sealing rubber strip (4112) tightly between arc curb plate (411) and arc roof (421) automatically.
8. The integral molding construction method for the secondary lining of the ultra-large section tunnel according to claim 7, which is characterized in that: the automatic abutting assembly (9) comprises a first abutting rod (91), a second abutting rod (92), a first spring (93) and a second spring (94); a first sliding cavity (4113) is horizontally formed in the arc-shaped side plate (411), a first butt rod (91) is inserted in the first sliding cavity (4113) in a sliding mode, a containing cavity (41111) is formed in one side, close to the arc-shaped side plate (411), of the first sealing rubber strip (4111), one end of the first butt rod (91) is located in the containing cavity (41111), a first spring (93) is sleeved on the first butt rod (91) and located in the first sliding cavity (4113), and the first spring (93) always has a tendency of pushing one end of the first butt rod (91) into the containing cavity (41111);
a second sliding cavity (4114) is vertically formed in the arc-shaped side plate (411), the second sliding cavity (4114) is communicated with the first sliding cavity (4113), the second butt rod (92) is slidably inserted into the second sliding cavity (4114), the lower end of the second butt rod (92) is located in the first sliding cavity (4113), a placing groove (4115) is formed in the end portion, close to the arc-shaped top plate (421), of the arc-shaped side plate (411), the second sealing rubber strip (4112) is placed in the placing groove (4115), one end, far away from the first sliding cavity (4113), of the second butt rod (92) extends into the placing groove (4115), a pushing plate (10) is arranged at one end, located in the placing groove (4115), of the second butt rod (92), and the pushing plate (10) is attached to the second sealing rubber strip (4112); the second spring (94) is sleeved on the second abutting rod (92) and is positioned in the second sliding cavity (4114), and the second spring (94) always has a tendency of pushing the second abutting rod (92) in a vertical and downward direction;
one end that first butt joint pole (91) are located first slip chamber (4113) is equipped with push away face (911) to one side, the one end that second butt joint pole (92) are located first slip chamber (4113) is equipped with the quilt that corresponds with push away face (911) to one side and pushes away face (921), push away face (911) and quilt sliding fit.
9. The integral molding construction method for the secondary lining of the ultra-large section tunnel according to claim 4, wherein the construction method comprises the following steps: and a top sealing strip (4211) is covered on the upper arc edge of the arc-shaped top plate (421).
10. The integral molding construction method for the secondary lining of the ultra-large section tunnel according to claim 5, wherein the construction method comprises the following steps: the trolley (1) is provided with a driving box (11), and the driving box (11) is used for shielding the meshing part of the driving gear (522) and the driven gear (524).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210644090.2A CN115126504A (en) | 2022-06-09 | 2022-06-09 | Integral molding construction method for secondary lining of oversized section tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210644090.2A CN115126504A (en) | 2022-06-09 | 2022-06-09 | Integral molding construction method for secondary lining of oversized section tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115126504A true CN115126504A (en) | 2022-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210644090.2A Pending CN115126504A (en) | 2022-06-09 | 2022-06-09 | Integral molding construction method for secondary lining of oversized section tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115126504A (en) |
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2022
- 2022-06-09 CN CN202210644090.2A patent/CN115126504A/en active Pending
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