CN110454197B - Tunnel inverted arch partition and sub-process streamlined construction method - Google Patents
Tunnel inverted arch partition and sub-process streamlined construction method Download PDFInfo
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- CN110454197B CN110454197B CN201910786343.8A CN201910786343A CN110454197B CN 110454197 B CN110454197 B CN 110454197B CN 201910786343 A CN201910786343 A CN 201910786343A CN 110454197 B CN110454197 B CN 110454197B
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- 238000010276 construction Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims description 13
- 238000005192 partition Methods 0.000 title abstract description 4
- 238000009412 basement excavation Methods 0.000 claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 239000002893 slag Substances 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 5
- 230000007306 turnover Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000009415 formwork Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/10—Travelling bridges, i.e. roller bridges; Sliding bridges; Rotary cylinder bridges, i.e. rotating about longitudinal axis to invert and raise the road
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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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
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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
-
- 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
-
- 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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a tunnel inverted arch partition work flow streamline construction method, comprising the following steps of firstly, entering a tunnel by a telescopic movable trestle; step two, performing inverted arch excavation primary support area operation in a segmented circulation mode; step three, binding steel bars in an inverted arch lining area while constructing the inverted arch excavation primary support area or after completing the construction of the inverted arch excavation primary support area; the inverted arch template is hung and transported from the inverted arch filling area to the inverted arch lining area, and concrete is poured in the inverted arch lining area; meanwhile, the central ditch template is drawn to the inverted arch filling area, and then concrete in the inverted arch filling area is poured; and step four, after the concrete strength of the inverted arch filling area reaches the standard, starting to move the telescopic movable trestle and entering the next construction cycle. By adopting the construction method, each construction cycle can save 27 hours, the construction time of the inverted arch is reduced, the secondary lining is promoted to quickly follow up, the safety step management is ensured to be controllable, the tunnel face can be promoted to be quickly constructed, and the lining is ensured to be safe and stable.
Description
Technical Field
The invention belongs to the technical field of engineering construction, and particularly relates to a streamlined construction method for each process of an inverted arch of a tunnel, which is applied to the fields of railways, highways, water conservancy and the like.
Background
At present, the construction of railway tunnel engineering is limited by a safety step pitch management red line, the construction period is long, the personnel allocation is ultrahigh, and the requirements of the existing stage of engineering construction cannot be met in the aspects of safety, quality and economy.
The inverted arch construction of the railway tunnel is taken as a key line key process, and the traditional construction method comprises the following steps: the working procedures of excavation and support, inverted arch lining, inverted arch filling and the like are carried out in sequence, step by step and intermittently, the time consumed for excavation and support of inverted arch construction with the general length of 12m is 30.2 hours, the time consumed for inverted arch lining is 57.5 hours, and the time consumed for inverted arch filling is 58.5 hours. Firstly, the construction process is long in time consumption, an inverted arch cannot be closed to form a ring in time, the lining safety step cannot be shortened in time, and the structural stability is poor, so that safety runaway is easily caused; secondly, only one working area is provided, each procedure can be operated in a single step, and a subsequent construction channel between the working area and the face is interrupted in the process, so that the face is basically suspended, the progress of construction organization is limited year by year and a virtuous circle cannot be formed; thirdly, the configured construction machinery and personnel are difficult to be fully utilized to the maximum extent, and the construction cost is difficult to control.
Disclosure of Invention
The invention aims to provide a safe, reliable and high-operability tunnel invert every-process-division and separate-process streamlined construction method, which reduces the time consumption of invert construction circulation, promotes secondary lining to follow closely, promotes tunnel face rapid construction under the condition of meeting the requirement of railway safety step pitch management red line, ensures lining safety and stability in a closed loop manner as soon as possible, improves invert construction efficiency in synchronous construction, and rapidly shapes and advances tunnel tunneling progress.
Therefore, the technical scheme adopted by the invention is as follows: a tunnel inverted arch subregion divides process streamlined construction method, including the following steps:
step one, a telescopic movable trestle enters a tunnel, and an inverted arch of the tunnel is divided into three independent operation areas, namely an inverted arch excavation primary support area, an inverted arch lining area and an inverted arch filling area, according to construction;
the telescopic movable trestle comprises a main bridge, wherein the main bridge is provided with a main bridge front approach bridge, a rear traveling mechanism, a front support leg, a middle support leg, a rear support leg and a main bridge longitudinal movement mechanism, a front longitudinal movement trolley and a rear longitudinal movement trolley are arranged on the main bridge at intervals from front to back, the front longitudinal movement trolley and the rear longitudinal movement trolley can move back and forth along the main bridge under the drive of respective power as a hanging mechanism, the front part of the main bridge is also provided with a front guide beam, the front guide beam is provided with a secondary longitudinal movement mechanism, an auxiliary support leg and a front approach bridge, the front guide beam is slidably arranged on the main bridge, the front part of the front guide beam extends out of the main bridge and can move forward relative to the main bridge under the drive of the secondary longitudinal movement mechanism, the front approach bridge is hinged to the front end of the front guide beam and can be turned over upwards for folding, and the lower end of the main bridge front approach bridge is just lapped on the;
step two, performing inverted arch excavation primary support area operation in a segmented circulation mode;
firstly, a front approach bridge is folded up by a telescopic movable trestle, an excavator is positioned in front of the telescopic movable trestle for excavation, a slag car is stopped at the front end of a front guide beam for slag loading operation, after a section of inverted arch is excavated, auxiliary supporting legs are folded up, the front guide beam is pushed to advance to the next section of inverted arch to be excavated by a secondary longitudinal movement mechanism, the auxiliary supporting legs are put down, a steel arch frame and a reinforcing mesh sheet are laid in the excavated inverted arch of the previous section, reinforcing steel bars are connected, concrete is sprayed again, and the excavation and the support of the excavated inverted arch of the previous section are completed;
continuing the cycle operation according to the mode until the operation of excavating the primary support area of the inverted arch is completed, putting down the front approach bridge, and recovering the telescopic movable trestle from passing;
step three, binding steel bars in an inverted arch lining area while constructing the inverted arch excavation primary support area or after completing the construction of the inverted arch excavation primary support area; after the binding of the reinforcing steel bars is finished, the front longitudinal moving trolley and the rear longitudinal moving trolley of the telescopic movable trestle jointly hang and transport the inverted arch template from the inverted arch filling area to the inverted arch lining area, and after the inverted arch template is well adjusted and positioned, concrete in the inverted arch lining area is poured; meanwhile, the rear longitudinal moving trolley returns to the tail part of the telescopic moving trestle, the central ditch template is drawn to the inverted arch filling area, and after the central ditch template is positioned, concrete in the inverted arch filling area is poured;
after the concrete strength of the inverted arch filling area reaches the standard, starting to move the telescopic movable trestle, retracting a rear approach bridge, supporting the filling surface by a rear traveling mechanism through an oil cylinder, enabling a rear supporting leg to leave the filling surface, retracting a front supporting leg, enabling a middle supporting leg to play a supporting role, pushing the main bridge to move forwards by a main bridge longitudinal moving mechanism, laying down the front supporting leg, retracting the middle supporting leg, drawing the middle supporting leg to move forwards by the main bridge longitudinal moving mechanism, laying down the middle supporting leg, repeatedly operating and continuing to advance until the accumulated travel of the movable telescopic movable trestle is equal to the length of the inverted arch filling area; and the rear walking mechanism falls back to enable the rear support legs to fall on the filling surface, the rear approach bridge is put down, the telescopic movable trestle recovers the traffic, and the next construction cycle is started.
Preferably, the length of the telescopic movable trestle is 54 meters, the length of the main bridge is 30 meters, and the length of the front girder is 19 meters.
More preferably, the length of each of the inverted arch excavation primary support area, the inverted arch lining area and the inverted arch filling area is 12 meters; in the second step, the excavation and the support of a small section of inverted arch with the length of 3 meters are finished each time, and the operation of excavating a primary support area of the inverted arch with the length of 12 meters is finished four times; in the fourth step, the telescopic movable trestle moves forwards by 6 meters each time, and the movement of 12 meters in one construction cycle is completed in two times.
The invention has the beneficial effects that: the inverted arch construction is divided into three independent operation areas, namely an inverted arch excavation primary support area, an inverted arch lining area and an inverted arch filling area, and a large-span telescopic inverted arch mobile trestle is combined to form the sectional and sub-process streamlined construction operation. By construction site verification, by adopting the construction method, each construction cycle can be saved by 27 hours, the construction time of the inverted arch is reduced, the secondary lining is promoted to quickly follow up, the safety step management is controllable, the tunnel face can be promoted to be quickly constructed, and the lining is ensured to be safe and stable.
Drawings
Fig. 1 is a schematic diagram of a telescopic mobile trestle and its partition.
Fig. 2 is a construction schematic diagram of an inverted arch excavation primary support area.
FIG. 3 is a schematic view of the construction of an inverted arch lining section.
Fig. 4 is a construction diagram of an inverted arch filling area.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
a tunnel inverted arch subregion divides process streamlined construction method, including the following steps:
step one, as shown in figure 1, the telescopic movable trestle enters a tunnel, and an inverted arch of the tunnel is divided into three independent operation areas, namely an inverted arch excavation primary support area A, an inverted arch lining area B and an inverted arch filling area C according to construction.
The telescopic movable trestle mainly comprises a main bridge 1, a front longitudinal movement trolley 2, a rear longitudinal movement trolley 3, a main bridge front approach bridge 4, a rear approach bridge 5, a rear traveling mechanism 6, a front support leg 7, a middle support leg 8, a rear support leg 9, a main bridge longitudinal movement mechanism 10, a front guide beam 11, a secondary longitudinal movement mechanism 12, an auxiliary support leg 13 and a front approach bridge 14.
The traditional trestle comprises a main bridge, a front longitudinal moving trolley, a rear longitudinal moving trolley, a front approach bridge, a rear walking mechanism, a front supporting leg, a rear supporting leg and a main bridge longitudinal moving mechanism, and cannot be stretched. This telescopic removal landing stage has increased well landing leg, preceding nose girder, time and has indulged mechanism, supplementary landing leg, preceding approach bridge etc. on the basis of traditional landing stage.
The main bridge 1 is provided with a front longitudinal moving trolley 2 and a rear longitudinal moving trolley 3 at intervals in the front-rear direction, and the front longitudinal moving trolley 2 and the rear longitudinal moving trolley 3 can move back and forth along the main bridge 1 under the driving of respective power as a hanging mechanism and are used for hanging or pulling an inverted arch template, a central ditch template and the like from the lower part of the main bridge. The front longitudinal moving trolley 2 and the rear longitudinal moving trolley 3 belong to the prior art and are not described in detail herein.
The front part of the main bridge 1 is also provided with a front guide beam 11, and the front guide beam 11 is provided with a secondary longitudinal movement mechanism 12, an auxiliary leg 13 and a front approach bridge 14. The front guide beam 11 is slidably mounted on the main axle 1, the rear part of the front guide beam 11 is slidably mounted in the main axle 1, and the front part of the front guide beam 11 extends out of the main axle 1 and can move forward relative to the main axle 1 under the drive of the secondary longitudinal movement mechanism 12. The secondary longitudinal moving mechanism 12 adopts a telescopic cylinder, one end of the telescopic cylinder is hinged at the bottom of the front guide beam 11, and the other end of the telescopic cylinder is hinged on the front end surface of the front supporting leg 7.
The front approach bridge 14 is hinged to the front end of the front guide beam 11 and can be folded upwards (fig. 1 shows a working state and two states of folding upwards), and the front approach bridge 14 is folded through a telescopic cylinder. The lower end of the main bridge front approach 4 is just right lapped on the front guide beam 11.
And step two, performing the operation of excavating the primary support area A of the inverted arch in a segmented circulation mode.
Firstly, the front approach bridge 14 is folded up by the telescopic movable trestle, the excavator is positioned in front of the telescopic movable trestle for excavating, the slag discharging vehicle is stopped on the front guide beam 11 and positioned at the front end of the front guide beam 11 for carrying out slag loading operation. When a small section of inverted arch excavation is completed, such as 3 meters, but not limited to 3 meters, the auxiliary supporting leg 13 is retracted, and the auxiliary supporting leg 13 is extended and contracted through the action of the telescopic cylinder. The front guide beam 11 is pushed by the secondary longitudinal moving mechanism 12 to move forward to the next section of inverted arch to be excavated, the auxiliary supporting legs 13 are put down, the steel arch frame and the reinforcing mesh piece are paved in the excavated inverted arch of the previous section, the reinforcing bars are connected, concrete is sprayed again, and the excavation and the support of the excavated inverted arch of the previous section are completed. Fig. 2 is a construction schematic diagram of an inverted arch excavation primary support area, but a front approach bridge is not folded.
And (4) continuing the cycle operation according to the mode until the operation of excavating the primary support area A of the inverted arch is completed, putting down the front approach bridge 14, and recovering the telescopic movable trestle from passing.
And step three, binding the steel bars of the inverted arch lining area B while constructing the inverted arch excavation primary support area A or after finishing constructing the inverted arch excavation primary support area A. After the steel bars are bound, the front longitudinal moving trolley 2 and the rear longitudinal moving trolley 3 of the telescopic movable trestle jointly hang and transport the inverted arch formwork from the inverted arch filling area C to the inverted arch lining area B, and after the inverted arch formwork is well adjusted and positioned, concrete in the inverted arch lining area B is poured, as shown in fig. 3. Meanwhile, the rear longitudinal moving trolley 3 returns to the tail part of the telescopic moving trestle, pulls the central ditch template to the inverted arch filling area C, and pours concrete in the inverted arch filling area C after the positioning of the central ditch template is finished, as shown in fig. 4.
And step four, after the concrete strength of the inverted arch filling area C reaches the standard, moving the telescopic movable trestle. Firstly, a rear approach bridge 5 is folded, a rear walking mechanism 6 supports a filling surface through an oil cylinder, a rear supporting leg 9 leaves the filling surface, a front supporting leg 7 is folded, a middle supporting leg 8 plays a supporting role, and a main bridge longitudinal moving mechanism 10 pushes a main bridge 1 to move forwards for a small section. And (3) putting down the front supporting leg 7, retracting the middle supporting leg 8, dragging the middle supporting leg 8 to move forwards for a small section through the main bridge longitudinal movement mechanism 10, putting down the middle supporting leg 8, and repeating the operation to continue to move forwards until the accumulated travel of the movable telescopic movable trestle is equal to the length of the inverted arch filling area C. And the rear walking mechanism 6 falls back to enable the rear supporting legs 9 to fall on the filling surface, the rear approach bridge 5 is put down, the telescopic movable trestle recovers the passage, and the next construction cycle is started.
The total length of the telescopic movable trestle is 54 meters, which means that the front guide beam 11 extends forwards to the limit position relative to the main bridge 1, and the front approach bridge 4, the rear approach bridge 5 and the front approach bridge 14 of the main bridge are all in the length of working state. The main bridge 1 is 30 meters long, and the front guide beam 11 is 19 meters long. The dimensions of the telescopic mobile trestle, the main bridge 1 and the front guide beam 11 are not limited to the above dimensions.
The primary support area A, the inverted arch lining area B and the inverted arch filling area C of the inverted arch excavation are 12 meters long respectively. In the second step, the excavation and the supporting of a small section of inverted arch with the length of 3 meters are finished each time, and the operation of excavating the primary support area A of the inverted arch with the length of 12 meters is finished four times. In the fourth step, the telescopic movable trestle moves forwards by 6 meters each time, and the movement of 12 meters in one construction cycle is completed in two times.
Claims (3)
1. A tunnel inverted arch subregion divides process streamlined construction method, characterized by, including the following steps:
step one, a telescopic movable trestle enters a tunnel, and an inverted arch of the tunnel is divided into three independent operation areas, namely an inverted arch excavation primary support area (A), an inverted arch lining area (B) and an inverted arch filling area (C), according to construction;
the telescopic movable trestle comprises a main bridge (1), wherein the main bridge (1) is provided with a main bridge front approach bridge (4), a rear approach bridge (5), a rear traveling mechanism (6), front support legs (7), middle support legs (8), rear support legs (9) and a main bridge longitudinal movement mechanism (10), a front longitudinal movement trolley (2) and a rear longitudinal movement trolley (3) are installed on the main bridge (1) at intervals from front to back, the front longitudinal movement trolley (2) and the rear longitudinal movement trolley (3) can move back and forth along the main bridge (1) under the drive of respective power as a hanging mechanism, a front guide beam (11) is further installed at the front part of the main bridge (1), the front guide beam (11) is provided with a secondary longitudinal movement mechanism (12), auxiliary support legs (13) and a front approach bridge (14), the front guide beam (11) is slidably installed on the main bridge (1), the front part of the front guide beam (11) extends out of the main bridge (1) and can move forward relative to the main bridge (1) under the drive of the secondary longitudinal movement mechanism (12), the front approach bridge (14) is hinged to the front end of the front guide beam (11) and can be folded upwards in a turnover mode, and the lower end of the main bridge front approach bridge (4) is just overlapped on the front guide beam (11);
step two, performing inverted arch excavation primary support area (A) operation in a segmented circulation mode;
firstly, a front approach bridge (14) is folded up by a telescopic movable trestle, an excavator is positioned in front of the telescopic movable trestle for excavation, a slag car is stopped at the front end of a front guide beam (11) for slag loading operation, after a small section of inverted arch is excavated, auxiliary supporting legs (13) are folded up, the front guide beam (11) is pushed to move forward to the next small section of inverted arch to be excavated by a secondary longitudinal moving mechanism (12), the auxiliary supporting legs (13) are put down, a steel arch frame and a reinforcing steel bar net piece are laid in the excavated inverted arch of the previous small section, reinforcing steel bars are connected, concrete is sprayed, and excavation and supporting of the excavated inverted arch of the previous small section are completed;
continuing the cycle operation according to the mode until the operation of excavating the primary support area (A) of the inverted arch is finished, putting down the front approach bridge (14), and recovering the telescopic movable trestle from passing;
step three, binding steel bars of an inverted arch lining area (B) while constructing the inverted arch excavation primary support area (A) or after finishing the construction of the inverted arch excavation primary support area (A); after the binding of the reinforcing steel bars is finished, a front longitudinal moving trolley (2) and a rear longitudinal moving trolley (3) of the telescopic movable trestle jointly hang and transport an inverted arch template from an inverted arch filling area (C) to an inverted arch lining area (B), and after the inverted arch template is well adjusted and positioned, concrete is poured into the inverted arch lining area (B); meanwhile, the rear longitudinal moving trolley (3) returns to the tail part of the telescopic moving trestle, the central ditch template is pulled to the inverted arch filling area (C), and after the positioning of the central ditch template is completed, concrete in the inverted arch filling area (C) is poured;
fourthly, after the concrete strength of the inverted arch filling area (C) reaches the standard, starting to move the telescopic movable trestle, retracting the rear approach bridge (5), supporting the filling surface by the rear traveling mechanism (6) through the oil cylinder, leaving the filling surface by the rear supporting leg (9), retracting the front supporting leg (7), supporting by the middle supporting leg (8), pushing the main bridge (1) to move forwards by the main bridge longitudinal moving mechanism (10), laying down the front supporting leg (7), retracting the middle supporting leg (8), pulling the middle supporting leg (8) to move forwards by the main bridge longitudinal moving mechanism (10), laying down the middle supporting leg (8), repeating the operation to continue to advance until the accumulated travel of the movable trestle is equal to the length of the inverted arch filling area (C); and the rear walking mechanism (6) falls back to enable the rear supporting legs (9) to fall on the filling surface, the rear approach bridge (5) is put down, the telescopic movable trestle recovers the passage, and the next construction cycle is started.
2. The tunnel inverted arch divisional flow streamlined construction method according to claim 1, characterized in that: the total length of the telescopic mobile trestle is 54 meters, the length of the main bridge (1) is 30 meters, and the length of the front guide beam (11) is 19 meters.
3. The tunnel inverted arch divisional flow streamlined construction method according to claim 1, characterized in that:
the inverted arch excavation primary support area (A), the inverted arch lining area (B) and the inverted arch filling area (C) are 12 meters long respectively;
in the second step, the excavation and the support of a small section of inverted arch with the length of 3 meters are finished each time, and the operation of excavating the primary support area (A) of the inverted arch with the length of 12 meters is finished four times; in the fourth step, the telescopic movable trestle moves forwards by 6 meters each time, and the movement of 12 meters in one construction cycle is completed in two times.
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| CN201910786343.8A CN110454197B (en) | 2019-08-23 | 2019-08-23 | Tunnel inverted arch partition and sub-process streamlined construction method |
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| CN111577345B (en) * | 2020-05-20 | 2022-02-08 | 中铁二局第二工程有限公司 | Construction method and construction system for multilayer anti-seepage tunnel bottom structure |
| CN111734453A (en) * | 2020-06-04 | 2020-10-02 | 中铁十二局集团第三工程有限公司 | Construction method of self-propelled inverted arch arc-shaped formwork movable trestle |
| CN111663430B (en) * | 2020-06-09 | 2022-02-22 | 中铁十一局集团汉江重工有限公司 | Angularly adjustable and horizontal adjustable removes landing stage |
| CN116771389B (en) * | 2023-08-17 | 2023-12-15 | 中铁五局集团第一工程有限责任公司 | Full-ring lining device for traffic tunnel and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3312394A1 (en) * | 1983-04-06 | 1984-10-11 | Carl, Heinz, Ing.(grad.), 8644 Pressig | Structure with an arched construction |
| JP4859692B2 (en) * | 2007-02-01 | 2012-01-25 | 鹿島建設株式会社 | Tunnel internal structure construction method |
| CN102042021A (en) * | 2011-01-14 | 2011-05-04 | 湖南五新机械有限公司 | Automatically walking stepped mobile trestle |
| CN106150509A (en) * | 2016-08-05 | 2016-11-23 | 中铁工程装备集团有限公司 | A kind of double track tunnel is non-bores quick-fried mechanized construction method |
| CN107725073B (en) * | 2017-11-06 | 2024-04-02 | 中建八局第一建设有限公司 | Tunnel construction method based on simple trestle |
| CN208416560U (en) * | 2018-05-25 | 2019-01-22 | 中铁隧道集团二处有限公司 | A kind of equipment for the construction of single-track tunnel inverted arch |
| CN109162720A (en) * | 2018-08-24 | 2019-01-08 | 中铁十六局集团第三工程有限公司 | A kind of twin spans freely-supported inverted arch trestle construction method |
| CN109026074A (en) * | 2018-10-25 | 2018-12-18 | 中铁工程装备集团有限公司 | Large span propelled tunnel inverted arch trestle |
| CN109505630B (en) * | 2019-01-14 | 2023-09-08 | 中铁一局集团有限公司 | Full-hydraulic crawler-type self-propelled trestle and construction method |
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