CN107642370A - Tunnel inverted arch repairs secondary lining ruggedized construction and construction method - Google Patents
Tunnel inverted arch repairs secondary lining ruggedized construction and construction method Download PDFInfo
- Publication number
- CN107642370A CN107642370A CN201711008145.6A CN201711008145A CN107642370A CN 107642370 A CN107642370 A CN 107642370A CN 201711008145 A CN201711008145 A CN 201711008145A CN 107642370 A CN107642370 A CN 107642370A
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- hole
- inverted arch
- drilling
- secondary lining
- reinforced
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- 238000010276 construction Methods 0.000 title claims abstract description 32
- 230000008439 repair process Effects 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 210000002435 tendon Anatomy 0.000 claims abstract description 21
- 239000011435 rock Substances 0.000 claims abstract description 19
- 239000004567 concrete Substances 0.000 claims abstract description 14
- 239000004568 cement Substances 0.000 claims abstract description 6
- 238000005553 drilling Methods 0.000 claims description 35
- 239000011083 cement mortar Substances 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 12
- 238000007689 inspection Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 235000013312 flour Nutrition 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 238000003780 insertion Methods 0.000 abstract description 3
- 230000037431 insertion Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000004570 mortar (masonry) Substances 0.000 abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 238000001514 detection method Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of tunnel inverted arch to repair secondary lining ruggedized construction and construction method, belong to technical field of tunnel construction, the steel pipe anchor pile insertion for locking pin anchor tube and tendon composition is opened in the reinforced hole of secondary lining abutment wall foundation, and cement injection mortar is to be reinforced, steel pipe anchor pile is through secondary lining armored concrete and extends in country rock, inverted arch and inverted arch can be effectively maintained to abolish rear tunnel overall structure balance, avoid the occurrence of the generation in secondary liner structure slid inward and crack, ensure the safety of workmen and equipment, improve construction speed, the quality of guarantee engineering that can be fabulous simultaneously extends the engineering life-span.
Description
Technical field
The invention belongs to technical field of tunnel construction, and in particular to a kind of tunnel inverted arch repair secondary lining ruggedized construction and
Construction method.
Background technology
Tunnel inverted arch is one of the chief component in tunnel, is arranged on to improve top supporting construction stress condition
The reverse domes of tunnel bottom, are one of chief components of tunnel structure, and it is on the one hand by the ground on tunnel top
Stressor layer is effectively delivered to underground by tunnel side wall structure or by the load on road surface, but also effectively resists under tunnel
The counter-force that portion is transmitted on stratum.Inverted arch forms tunnel entirety with secondary lining, increases structural stability.
Vcehicular tunnel inverted arch defect has inverted arch void slag, concrete thickness deficiency, concrete leakiness, pucking, inverted arch
Backfill road surface region is ftractureed, risen soil, and according to different degree of disease, is not abolished existing structure generally and is used slip casting side
Formula is reinforced to inverted arch.
Above-mentioned inverted arch defect is made under empty slag etc. by that can carry out closing closure to existing crack or underground water after grouting treatment
Portion's defect body forms entirety, in fact often because new priming charge mud defect body and old concrete have age, strength difference, inverted arch
And inverted arch fill concrete surface is not clean, the overall structure that can not be formed in absolute sense, the durability for repairing structure is difficult to
Ensure, same or new disease is there is also by the operation of several years after many tunnel processing.
The content of the invention
The purpose of the present invention is that to provide a kind of tunnel inverted arch to solve the above problems and integrally abolish and performed again
When secondary lining ruggedized construction and construction method.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of tunnel inverted arch repairs secondary lining reinforced construction method, comprises the following steps：
1) secondary lining reinforced concrete drilling, drilled using electric boring corning machine, orifice position and cable channel cover plate
Flush, boring direction tilts down relative to horizontal direction, and drilling depth is more than secondary lining concrete thickness, and drilling diameter is big
In 90mm；
2) wall rock drill-hole, drilling use hidden hole drilling, position and protect according to completed hole on secondary lining armored concrete
It is consistent to hold boring direction, hole depth overall length 6m, the hole depth overall length includes the drilling hole depth of step 1)；
3) borehole cleaning, high-pressure blast borehole cleaning is used after the completion of drilling, ensured in hole totally without aggregate chips and stone flour；
4) verify, borehole cleaning completion aperture after footpath, hole depth, angle are carried out an acceptance inspection, and the next step is entered after acceptance(check)；
5) installation of steel pipe anchor pile and grouting sealing of hole, steel pipe anchor pile are made up of lock pin anchor tube and tendon, acceptance(check)
Lock pin anchor tube is inserted in the hole afterwards, Grouting Pipe is placed in the middle part of tendon, by cement mortar by Grouting Pipe hand-hole, cement bonded sand
Slurry strength grade is M20, grouting pressure 0.5MPa, stops grouting after slurry is continuously overflow in aperture, installs stop grouting plug to prevent water mud
Mortar overflows, and waits cement mortar solidification to remove stop grouting plug after 45 minutes.
Preferably, the geological condition of country rock should be observed during wall rock drill-hole, and if chance wall rock loosening is broken, Ying Cai
Drilled with the drilling method of follow-up sleeve pipe, in case of the hole that collapses should stop to bore immediately, and carry out grouting for braced wall processing, weighed after cement initial set
New borehole cleaning drilling.
Preferably, the Grouting Pipe isPvc pipe.
Preferably, the front end of the Grouting Pipe is away from bottom hole end 0.3m.
Preferably, the initial length of the tendon is no more than the length of lock pin anchor tube and is more than drilling depth, water is treated
When cement mortar is cured to design strength, with the tendon and lock pin anchor tube outside abrasive machine excision exposed hole.
A kind of tunnel inverted arch repairs secondary lining ruggedized construction, including is opened in Tunnel Second Lining abutment wall foundation and outside
The reinforced hole of inclined downward, the reinforced hole is through secondary lining concrete structure and extends in country rock, in the reinforced hole
Steel pipe anchor pile is installed, the gap in the steel pipe anchor pile, between the steel pipe anchor pile and the reinforced hole is filled
There is cement mortar；
The steel pipe anchor pile includes lock pin anchor tube, the tendon inserted in lock pin anchor tube, the lock pin anchor tube circumferential wall
On be provided with some injected holes.
Preferably, the reinforced hole is 35 °~45 ° with horizontal direction angle.
Preferably, the seamless steel pipe that the lock pin anchor tube is Φ 89.
Preferably, the lock pin anchor tube arranges one on tube wall every 30cm with quincunx layout type along its length
Zhou Suoshu injected holes, the aperture of the injected hole is 10~16mm.
Preferably, the tendon is made up of three reinforcing bars and the retainer ring that three reinforcing bars are connected to one,
The equidistant outer ring surface for being welded in the retainer ring of the reinforcing bar, the reinforcing bar be diameter 20mm screw-thread steel, the retainer ring
Have multiple, and internal diameter is 26mm, and length is 3~5cm, and the length between two neighboring retainer ring is 1.5m.
The beneficial effects of the present invention are：
The steel pipe anchor pile insertion for locking pin anchor tube and tendon composition is opened in secondary lining abutment wall foundation by the present invention
In reinforced hole, and cement injection mortar can effectively maintain inverted arch to abolish rear tunnel overall structure balance, avoid to be reinforced
There is the generation in secondary liner structure slid inward and crack, ensure the safety of workmen and equipment, improve construction speed, energy
The quality of enough fabulous guarantee engineerings simultaneously extends the engineering life-span.
Brief description of the drawings
Fig. 1 is the schematic diagram that tunnel inverted arch of the present invention repairs secondary lining ruggedized construction；
Fig. 2 is the structural representation of steel pipe anchor pile of the present invention；
In figure：1- secondary linings, 2- country rocks, 3- steel pipe anchor piles, 31- lock pin anchor tubes, 311- injected holes, 32- tendons,
321- retainer rings, 322- reinforcing bars.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
With reference to shown in Fig. 1 and Fig. 2, tunnel inverted arch of the present invention, which repairs secondary lining ruggedized construction, to be included being opened in tunnel
The abutment wall foundation of secondary lining 1 and the outwards reinforced hole of inclined downward, reinforced hole is through secondary lining 1 and extends in country rock 2, schemes
In reinforced hole is not drawn, steel pipe anchor pile 3 is installed in reinforced hole, drawn the steel pipe anchor pile 3 in reinforced hole in figure, steel
Gap in pipe anchor pile 3, between steel pipe anchor pile 3 and reinforced hole is filled with cement mortar；Steel pipe anchor pile 3 includes lock pin
Tendon 32 in anchor tube 31, insertion lock pin anchor tube 31, locks and is provided with some injected holes 311, slip casting in the circumferential wall of pin anchor tube 31
The design in hole 311 enable the part of cement mortar poured into steel pipe anchor pile 3 from injected hole 311 flow to lock pin anchor tube 31 with
In gap between reinforced hole.
Wherein, reinforced hole and horizontal direction angle are 35 °~45 °；Lock the seamless steel pipe that pin anchor tube 31 is Φ 89；Lock
Pin anchor tube 31 arranges one week injected hole 311, injected hole 311 on tube wall every 30cm with quincunx layout type along its length
Aperture be 10~16mm；Tendon 32 is by three reinforcing bars 322 and the retainer ring that three reinforcing bars 322 are connected to one
321 composition, the equidistant outer ring surface for being welded in retainer ring 321 of reinforcing bar 322, reinforcing bar 322 be diameter 20mm screw-thread steel, retainer ring
321 have multiple, and internal diameter is 26mm, and length is 3~5cm, and the length between two neighboring retainer ring 321 is 1.5m.
It is as follows to realize that tunnel inverted arch repairs the construction method that secondary lining is reinforced：
1st, secondary lining reinforced concrete drilling
Secondary lining armored concrete is drilled using electric boring corning machine, and drilling horizontal position and cable channel cover plate are neat
Flat, angle exceedes secondary lining concrete structure thickness with level to 35 °~45 ° of angle, drilling depth, and bore dia is more than
90mm。
2nd, wall rock drill-hole
Drilling uses hidden hole drilling, is positioned according to completed hole on secondary lining armored concrete and keeps boring direction one
Cause, the hole total length of secondary lining reinforced concrete drilling and wall rock drill-hole is 6m, and the geology of country rock is observed in boring procedure
Situation, if chance wall rock loosening is broken, the drilling technology of follow-up sleeve pipe should be used；In case of the hole that collapses should stop to bore immediately, and consolidated
Wall grouting treatment, after cement initial set, borehole cleaning is crept into again.
3rd, borehole cleaning is with verifying
High-pressure blast borehole cleaning is used after the completion of drilling, ensures totally to complete back aperture, hole without aggregate chips and stone flour, borehole cleaning in hole
Deep, angle is carried out an acceptance inspection, and the next step is entered after acceptance(check).
4th, the installation of steel pipe anchor pile and grouting sealing of hole
Lock pin anchor tube 31 is inserted in drilling after hole position acceptance(check), by one end of Grouting Pipe and the export pipeline of grouting pump
Connection, Grouting Pipe arePipe, the Grouting Pipe other end are penetrated in tendon 32, and the outlet initial position of Grouting Pipe is away from hole
Bottom 30cm, tendon 32 is inserted in lock pin anchor tube 31, start the M20 cement mortar injection holes that grouting pump will be stirred
Interior, cement mortar is from bottom hole to outer filling, grouting pressure 0.5MPa, stops grouting after slurry is continuously overflow in aperture, installs stop grouting plug
To prevent water cement mortar from overflowing, it is dismountable stop grouting plug after 45 minutes to wait cement mortar solidification；The initial length of tendon 32
No more than the length for locking pin anchor tube 31 and it is more than drilling depth, when cement mortar solidification is to design strength, is cut off with abrasive machine
Tendon 32 and lock pin anchor tube 31 outside exposed hole.
The applicable scope of the present invention is that tunnel inverted arch and inverted arch backfill and secondary lining reinforcing bar mixed when being performed again after abolishing
Xtah Crude Clay structure is reinforced, and is abolished and is carried out using jump storehouse mode, is abolished section and is longitudinally no longer than 6m, is not required to before abolishing to adjacent
Inverted arch to be processed carries out Transverse notch, and groove depth is consistent with inverted arch, and vibrations are to adjacent bonds when cutting is in order to avoid abolishing
The influence of structure body.
The present invention suitable for the Rong's high speed The Dragon Spring Hill tunnel inverted arch defect repair of Chongqing, in addition to above-mentioned working procedure, also needs
Pay attention to problems with：
During wall rock drill-hole, needed stone in hole simultaneously due to hidden hole drilling dry hole operation, during operation using high pressure gas
Outside powder and aggregate chips blowout hole, spread to suppress airborne dust in hole, using the uninterrupted spray pattern drop of spray thrower near aperture
Dirt, depositing dust is carried out using fog gun car in hole, fog gun car quantity adjusts according to dust concentration, and worker wears anti-dust respirator；
The Dragon Spring Hill tunnel is low concentration gas tunnel, and tunnel has penetrated, and gas may be along rock during drilling construction
Stony fracture gap is overflowed, and gas management is detected by full-time watt inspection person, administrative staff and other special work posts personnel.Watt inspection person uses portable
Formula light interference methane tester is detected, and other staff use Portable methane testing alarm, and two kinds of instruments collectively constitute
Gas management system；
Gas management place is rear 20m scopes in face of boring work, the vehicle driving passage in main hole and walkway, various operations
Chassis and machinery are nearby in distinguished and admirable in 20m, motor and switch be nearby in distinguished and admirable in 20m.Watt inspection person predominantly detects methane
Concentration and gas concentration lwevel, detection frequency is 60min/ times, gas management person side station whole process during unusual condition occurs and is examined
Survey, and record testing result；
Before drilling starts, one-time detection is first carried out to construction section using Portable Methane Detection Alarm；In boring procedure
Continuous detection, after the completion of drilling, tunnel is carried out once comprehensively, continuously checking.Watt inspection person is to gas management after having checked
After carry out " three fill in " system, that is, fill in gas detection board plate, gas detection minute book and gas detection book；
In order to reduce gas density, tunnel installation jet blower ventilation while monitoring, each operating point uses ventilating fan,
Tunnel wind speed is reached 1m/s, prevent methane accumulation, the gas density of arbitrfary point is both less than 0.5%.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made within principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of tunnel inverted arch repairs secondary liner structure reinforced construction method, it is characterised in that including：
1) secondary lining reinforced concrete drilling, being drilled using electric boring corning machine, orifice position flushes with cable channel cover plate,
Boring direction tilts down relative to horizontal direction, and drilling depth is more than secondary lining concrete thickness, and drilling diameter is more than
90mm；
2) wall rock drill-hole, drilling use hidden hole drilling, are positioned according to completed hole on secondary lining armored concrete and keep boring
Hole direction is consistent, and hole depth overall length 6m, the hole depth overall length includes the drilling hole depth of step 1)；
3) borehole cleaning, high-pressure blast borehole cleaning is used after the completion of drilling, ensured in hole totally without aggregate chips and stone flour；
4) verify, borehole cleaning completion aperture after footpath, hole depth, angle are carried out an acceptance inspection, and the next step is entered after acceptance(check)；
5) installation of steel pipe anchor pile and grouting sealing of hole, steel pipe anchor pile are made up of lock pin anchor tube and tendon, will after acceptance(check)
Lock pin anchor tube inserts in the hole, and Grouting Pipe is placed in the middle part of tendon, by cement mortar by Grouting Pipe hand-hole, cement mortar is strong
Degree grade is M20, grouting pressure 0.5MPa, stops grouting after slurry is continuously overflow in aperture, installs stop grouting plug to prevent water cement mortar
Overflow, wait cement mortar solidification to remove stop grouting plug after 45 minutes.
2. tunnel inverted arch according to claim 1 repairs secondary liner structure reinforced construction method, it is characterised in that is enclosing
The geological condition of country rock should be observed in rock boring procedure, if chance wall rock loosening is broken, the drilling method of follow-up sleeve pipe should be used
Drilling, in case of the hole that collapses should stop to bore immediately, and grouting for braced wall processing is carried out, the borehole cleaning drilling again after cement initial set.
3. tunnel inverted arch according to claim 1 repairs secondary liner structure reinforced construction method, it is characterised in that described
Grouting Pipe isPvc pipe.
4. tunnel inverted arch according to claim 1 repairs secondary liner structure reinforced construction method, it is characterised in that described
The front end of Grouting Pipe is away from bottom hole end 0.3m.
5. tunnel inverted arch according to claim 1 repairs secondary liner structure reinforced construction method, it is characterised in that described
The initial length of tendon is no more than the length of lock pin anchor tube and is more than drilling depth, treats cement mortar solidification to design strength
When, with the tendon and lock pin anchor tube outside abrasive machine excision exposed hole.
6. a kind of tunnel inverted arch repairs secondary lining ruggedized construction, it is characterised in that including being opened in Tunnel Second Lining abutment wall
Foundation and the outwards reinforced hole of inclined downward, the reinforced hole is through secondary lining concrete structure and extends in country rock, institute
State and steel pipe anchor pile is installed in reinforced hole, in the steel pipe anchor pile, between the steel pipe anchor pile and the reinforced hole
Gap is filled with cement mortar；
The steel pipe anchor pile includes lock pin anchor tube, the tendon inserted in lock pin anchor tube, is set in the lock pin anchor tube circumferential wall
It is equipped with some injected holes.
7. tunnel inverted arch according to claim 6 repairs secondary lining ruggedized construction, it is characterised in that the reinforced hole with
Horizontal direction angle is 35 °~45 °.
8. tunnel inverted arch according to claim 6 repairs secondary lining ruggedized construction, it is characterised in that the lock pin anchor tube
For Φ 89 seamless steel pipe.
9. tunnel inverted arch according to claim 6 repairs secondary lining ruggedized construction, it is characterised in that the lock pin anchor tube
One week injected hole, the aperture of the injected hole are arranged with quincunx layout type on tube wall every 30cm along its length
For 10~16mm.
10. tunnel inverted arch according to claim 6 repairs secondary lining ruggedized construction, it is characterised in that the tendon
It is made up of three reinforcing bars and the retainer ring that three reinforcing bars are connected to one, the reinforcing bar is equidistant to be welded in the fixation
The outer ring surface of ring, the reinforcing bar are diameter 20mm screw-thread steel, and the retainer ring has multiple, and internal diameter is 26mm, and length is equal
For 3~5cm, the length between two neighboring retainer ring is 1.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711008145.6A CN107642370A (en) | 2017-10-25 | 2017-10-25 | Tunnel inverted arch repairs secondary lining ruggedized construction and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711008145.6A CN107642370A (en) | 2017-10-25 | 2017-10-25 | Tunnel inverted arch repairs secondary lining ruggedized construction and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107642370A true CN107642370A (en) | 2018-01-30 |
Family
ID=61123480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711008145.6A Pending CN107642370A (en) | 2017-10-25 | 2017-10-25 | Tunnel inverted arch repairs secondary lining ruggedized construction and construction method |
Country Status (1)
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| CN (1) | CN107642370A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374627A (en) * | 2019-06-17 | 2019-10-25 | 广州地铁设计研究院股份有限公司 | A kind of support system and its construction method of existing railway |
| CN111396088A (en) * | 2020-04-14 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Constraint pile, integral structure for controlling deformation of tunnel bottom and construction method |
| CN111396085A (en) * | 2020-03-19 | 2020-07-10 | 中铁十八局集团有限公司 | Tunnel inverted arch structure of anti pucking |
| CN111577334A (en) * | 2020-05-20 | 2020-08-25 | 招商局重庆交通科研设计院有限公司 | Operating tunnel inverted arch repairing method |
| CN114837053A (en) * | 2022-05-23 | 2022-08-02 | 四川公路桥梁建设集团有限公司 | Inverted arch pavement steel pipe column reinforcing structure and construction method |
| CN115370381A (en) * | 2022-08-17 | 2022-11-22 | 中国建筑第五工程局有限公司 | Deformation control construction method for existing arch lining in tunnel inverted arch dismantling and replacing construction |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374627A (en) * | 2019-06-17 | 2019-10-25 | 广州地铁设计研究院股份有限公司 | A kind of support system and its construction method of existing railway |
| CN111396085A (en) * | 2020-03-19 | 2020-07-10 | 中铁十八局集团有限公司 | Tunnel inverted arch structure of anti pucking |
| CN111396088A (en) * | 2020-04-14 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Constraint pile, integral structure for controlling deformation of tunnel bottom and construction method |
| CN111396088B (en) * | 2020-04-14 | 2024-06-04 | 中铁二院工程集团有限责任公司 | Construction method for controlling tunnel bottom deformation |
| CN111577334A (en) * | 2020-05-20 | 2020-08-25 | 招商局重庆交通科研设计院有限公司 | Operating tunnel inverted arch repairing method |
| CN111577334B (en) * | 2020-05-20 | 2022-05-17 | 招商局重庆交通科研设计院有限公司 | Operating tunnel inverted arch repairing method |
| CN114837053A (en) * | 2022-05-23 | 2022-08-02 | 四川公路桥梁建设集团有限公司 | Inverted arch pavement steel pipe column reinforcing structure and construction method |
| CN114837053B (en) * | 2022-05-23 | 2023-05-05 | 四川公路桥梁建设集团有限公司 | Inverted arch pavement reinforcing structure and construction method |
| CN115370381A (en) * | 2022-08-17 | 2022-11-22 | 中国建筑第五工程局有限公司 | Deformation control construction method for existing arch lining in tunnel inverted arch dismantling and replacing construction |
| CN115370381B (en) * | 2022-08-17 | 2023-11-24 | 中国建筑第五工程局有限公司 | Construction method for controlling deformation of lining of existing arch part in tunnel inverted arch replacement construction |
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Application publication date: 20180130 |