CN109989767A - The ruggedized construction and construction method of existing railway are worn under Large span tunnel - Google Patents
The ruggedized construction and construction method of existing railway are worn under Large span tunnel Download PDFInfo
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- CN109989767A CN109989767A CN201910046074.1A CN201910046074A CN109989767A CN 109989767 A CN109989767 A CN 109989767A CN 201910046074 A CN201910046074 A CN 201910046074A CN 109989767 A CN109989767 A CN 109989767A
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- 238000010276 construction Methods 0.000 title claims abstract description 68
- 230000003447 ipsilateral effect Effects 0.000 claims abstract description 4
- 238000009412 basement excavation Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000011435 rock Substances 0.000 claims description 9
- 239000003245 coal Substances 0.000 claims description 6
- 239000012634 fragment Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 241001669679 Eleotris Species 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The ruggedized construction and construction method of existing railway are worn under a kind of Large span tunnel, effectively to control railway sedimentation, it is ensured that existing railway operation and newly built tunnels construction safety.Ruggedized construction includes that a section ruggedized construction is worn under existing railway ruggedized construction, newly built tunnels.Existing railway ruggedized construction includes Left-side support stake, barrel support stake and the Right side support stake set in a row in existing railway two sides, wherein Left-side support stake, Right side support stake, which are located under newly built tunnels, wears other than the excavating sideline of section, barrel support stake, which vertically passes through, wears section under newly built tunnels, support stake borehole safeguard structure is arranged outside Left-side support stake, barrel support stake and Right side support stake.Left side D type just beam, right side D type just beam is respectively set in the stake top of ipsilateral Left-side support stake and barrel support stake, barrel support stake and Right side support stake, with two across across wearing section under newly built tunnels.Just just between beam along the crossbeam of existing railway extending direction interval setting both ends connection fixed thereto, the track of existing railway is fixed on each crossbeam D type for beam, right side D type on the left of two sides.
Description
Technical field
The present invention relates to railway engineering, in particular to the ruggedized construction of existing railway, Yi Ji great are worn under a kind of Large span tunnel
Across the construction method for wearing existing railway under tunnel, it is particularly suitable for wearing the constructing tunnel of existing railway under big cross section, shallow tunnel.
Background technique
Nowadays domestic railway traffic is in development construction period, necessarily will appear crossing elimination problem.Under newly built tunnels
If it is improper to wear existent railway implementation method, will lead to both wired sedimentations it is excessive or collapse, influence the normal operation of route, very
To seriously threatening the security of the lives and property.It when tunnel excavation method is constructed, should ensure construction safety, ensure existing railway again
Normal operation.
Existing trajectory is worn under at present to reinforce there are three types of common methods, i.e., button rail adds beam Scheme of Strengthening, D just beam in length and breadth
With work just beam Scheme of Strengthening.But there are many drawbacks for the simple reinforcing mode using these types to route, such as when span is larger
Just beam largest span is 24m to common standard D, and route can not cross over both wired, need once across D beam with when both wired angle of cut is smaller
Support stake is added within the scope of tunnel trunk, since within the scope of support stake intrusion tunnel trunk, tunnel lining trolley can not pacify
Dress is in place, even if pouring two linings using simple small template, splash guard also can not Man Pu, two lined steel muscle there is broken end at pile foundation,
Operation security and waterproof quality to the tunnel later period generate adverse effect.
Summary of the invention
Technical problem to be solved by the invention is to provide the ruggedized constructions that existing railway is worn under a kind of Large span tunnel, to have
Effect control railway sedimentation, it is ensured that existing railway operation and newly built tunnels construction safety improve construction efficiency, be greatly lowered and apply
Work cost.
The technical solution adopted by the present invention to solve the technical problems is as follows:
The ruggedized construction of existing railway is worn under Large span tunnel of the invention, existing railway is crossed under newly built tunnels below
Section is worn, ruggedized construction includes that a section ruggedized construction is worn under existing railway ruggedized construction, newly built tunnels, it is characterized in that: the existing iron
Road ruggedized construction includes Left-side support stake, barrel support stake and the Right side support stake set in a row in existing railway two sides, wherein
Left-side support stake, Right side support stake, which are located under newly built tunnels, wears other than the excavating sideline of section, and barrel support stake vertically passes through newly-built
Section is worn under tunnel, and support stake borehole safeguard structure is set outside Left-side support stake, barrel support stake and Right side support stake；On an ipsilateral left side
Left side D type just beam, right side D type is respectively set in the stake top of collateral support stake and barrel support stake, barrel support stake and Right side support stake
Just beam, with two across across wearing section under newly built tunnels；D type just beam, right side D type just between beam along existing railway extension side on the left of two sides
To the crossbeam of interval setting both ends connection fixed thereto, the track of existing railway is fixed on each crossbeam.
The Left-side support stake, barrel support stake and Right side support stake are reinforced concrete structure, and support stake borehole is anti-
Protection structure includes the retaining wall for surrounding pile body, and is being arranged at intervals at retaining wall outer steel pipe stake close to existing railway side, and in pile body
Top is set to the gear tiny fragments of stone, coal, etc. steel plate outside steel-pipe pile.
It includes advance support, preliminary bracing and liner structure that section ruggedized construction is worn under the newly built tunnels；Preliminary bracing by
System anchor bolt, preliminary bracing structure are constituted, and wear a section country rock under preliminary bracing structure covering newly built tunnels, system anchor bolt is circumferentially spaced-apart
It is set in the country rock in arch, abutment wall portion；The circumferentially spaced-apart super-front large pipe shed squeezed into the country rock of arch of the advance support；It is described
Liner structure is constituted by secondary liner structure and three times liner structure are compound, and waterproof layer is set to secondary liner structure, serves as a contrast three times
It builds between structure.
Another technical problem to be solved by this invention is to provide the ruggedized construction that existing railway is worn under above-mentioned Large span tunnel
Construction method.This method comprises the following steps:
1. surveying and locating determines Left-side support stake, barrel support stake and Right side support stake position in existing railway two sides；
2. performing two sides Left-side support stake, barrel support stake and Right side support stake；
3. installing two left side D types just beam, right side D type just beam, is worn under the track of existing railway and put crossbeam, the both ends of crossbeam
Just just beam is connected as one for beam, right side D type with D type on the left of two sides；
4. applying super-front large pipe shed before excavation using section is worn under mechanical excavation newly built tunnels, performing system in time after excavation
Anchor pole, preliminary bracing structure and secondary liner structure；
After 5. the secondary liner structure after be worn in section under newly built tunnels reaches design strength, truncation removes barrel and supports stake,
Perform guarded drainage facility and liner structure three times in barrel support stake coverage.
The invention has the advantages that using D type, just beam reinforces the track of existing railway, constructs to both wired fortune
Battalion's influence is small, and span can be adjusted flexibly, applied widely, and can be recycled and repeat D type just Liang Liyong；It is applied using two side-wall pilot tunnel
Work newly built tunnels, to section is worn under newly built tunnels using steel tube shed advance support, the support system of three layers of composite lining can be solved effectively
Certainly existing railway subgrade settlement problem provides safely effective guarantee for railway operation, it is ensured that construction safety shortens work
Phase reduces construction cost.
Detailed description of the invention
This specification includes following five width attached drawing:
Fig. 1 is the plan view that the ruggedized construction of existing railway is worn under Large span tunnel of the present invention；
Fig. 2 is the elevation that the ruggedized construction of existing railway is worn under Large span tunnel of the present invention；
Fig. 3 is the section that stake borehole safeguard structure is supported in the ruggedized construction for wear under Large span tunnel of the present invention existing railway
Figure；
Fig. 4 is the cross-section diagram that the ruggedized construction of existing railway is worn under Large span tunnel of the present invention；
Fig. 5 is the cross-section diagram for wearing section in the ruggedized construction for wear under Large span tunnel of the present invention existing railway under newly built tunnels.
Component and corresponding label: existing railway 10, track 11, Left-side support stake 12a, barrel support stake are shown in figure
12b, Right side support stake 12c, left side D type just beam 13a, right side D type just beam 13b, crossbeam 14, steel-pipe pile 15, gear tiny fragments of stone, coal, etc. steel plate 16, shield
Section 21, system anchor bolt 22, super-front large pipe shed 23, preliminary bracing structure are worn under wall 17, railway roadbed 18, excavating sideline 20, newly built tunnels
24, secondary liner structure 25, three times liner structure 26, waterproof layer 27.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Referring to Figures 1 and 2, the ruggedized construction of existing railway is worn under Large span tunnel of the invention, existing railway 10 crosses over it
Section 21 is worn under the newly built tunnels of lower section, ruggedized construction includes that a section ruggedized construction is worn under existing railway ruggedized construction, newly built tunnels.Institute
State existing railway ruggedized construction include the Left-side support stake 12a set in a row in 10 two sides of existing railway, barrel support stake 12b and
Right side support stake 12c, wherein Left-side support stake 12a, Right side support stake 12c are located at the excavating sideline 20 that section 21 is worn under newly built tunnels
In addition, barrel support stake 12b, which is vertically passed through, wears section 21 under newly built tunnels, Left-side support stake 12a, barrel support stake 12b and right side
It supports and support stake borehole safeguard structure is set outside stake 12c.It is supported in ipsilateral Left-side support stake 12a and barrel support stake 12b, barrel
Left side D type just beam 13a, right side D type just beam 13b is respectively set in the stake top of stake 12b and Right side support stake 12c, with two across across new
Section 21 is worn under built tunnel.Referring to Fig. 4, just beam 13a, right side D type just extend between beam 13b D type along existing railway 10 on the left of two sides
Direction interval be arranged both ends connection fixed thereto crossbeam 14, the track 11 of existing railway 10 be fixed at each crossbeam 14 it
On.
Referring to Fig. 3, the Left-side support stake 12a, barrel support stake 12b and Right side support stake 12c are armored concrete knot
Structure, using excavation pile construction, supporting stake borehole safeguard structure includes the retaining wall 17 for surrounding pile body, and close to existing railway 10
Side is arranged at intervals at 17 outer steel pipe stake 15 of retaining wall, and is set to the gear tiny fragments of stone, coal, etc. steel plate 16 outside steel-pipe pile 15 on pile body top.
Referring to Fig. 5, wearing section ruggedized construction under the newly built tunnels includes advance support, preliminary bracing and liner structure；Just
Phase supporting is made of system anchor bolt 22, preliminary bracing structure 24, and preliminary bracing structure 24 covers and wears 21 country rock of section under newly built tunnels,
In the circumferentially spaced-apart country rock for being set to arch, abutment wall portion of system anchor bolt 22.The advance support is circumferentially spaced-apart to squeeze into arch country rock
Interior super-front large pipe shed 23.By secondary liner structure 25 and three times, liner structure 26 is compound constitutes for the liner structure, waterproof layer
27 are set between secondary liner structure 25, three times liner structure 26.The secondary liner structure 25, liner structure 26 is three times
Reinforced concrete structure.
Referring to figs. 1 to Fig. 5, the construction method of the ruggedized construction of existing railway is worn under Large span tunnel of the present invention, including as follows
Step:
1. determining Left-side support stake 12a, barrel support stake 12b and Right side support in 10 two sides surveying and locating of existing railway
The position stake 12c；
2. performing two sides Left-side support stake 12a, barrel support stake 12b and Right side support stake 12c；
3. installing two left side D types just beam 13a, right side D type just beam 13b, is worn under the track 11 of existing railway 10 and put crossbeam
14, just just beam 13b is connected as one for beam 13a, right side D type with D type on the left of two sides at the both ends of crossbeam 14；
4. applying super-front large pipe shed 23 before excavation using section 21 is worn under mechanical excavation newly built tunnels, being performed in time after excavation
System anchor bolt 22, preliminary bracing structure 24 and secondary liner structure 25；
5. after the secondary liner structure 25 after be worn in section 21 under newly built tunnels reaches design strength, barrel support is removed in truncation
Stake 12b performs guarded drainage facility and liner structure 26 three times in barrel support stake 12b coverage.
Referring to Fig. 3, the step 2. in, Left-side support stake 12a, barrel support stake 12b and Right side support stake 12c are borehole
, prior to construction gear tiny fragments of stone, coal, etc. steel plate 16, steel-pipe pile 15 and retaining wall 17 outside its position before borehole.
Referring to Fig. 4,3. the step carries out in the following order, first supports stake in side Left-side support stake 12a and barrel
Stake top setting left side D type just beam 13a, right side D the type just beam 13b of 12b, barrel support stake 12b and Right side support stake 12c；Abstraction
Sleeper under the track 11 of existing railway 10, wears and puts crossbeam 14；In the other side, Left-side support stake 12a and barrel support stake 12b, hole
Left side D type just beam 13a, right side D type just beam 13b is respectively set in the stake top of body support stake 12b and Right side support stake 12c；Crossbeam 14
By D type on the left of bolt and two sides, just just beam 13b is connected as one for beam 13a, right side D type at both ends.
Referring to Figures 1 and 2, using D type, just beam reinforces the track 11 of existing railway 10 to the present invention, constructs to existing
Line Influence to operation is small, and span can be adjusted flexibly, applied widely, and can be recycled and repeat D type just Liang Liyong.Using double -side approach
Method construction newly built tunnels, to section is worn under newly built tunnels using steel tube shed advance support, the support system of three layers of composite lining can have
Effect solves the problems, such as existing railway subgrade settlement, provides effective guarantee safely for railway operation, it is ensured that construction safety shortens
Duration reduces construction cost.
Embodiment:
The applicant successfully will wear the ruggedized construction of existing railway under Large span tunnel of the invention and construction method is answered
In design and construction for wearing existing Kaiyang branch line under your line fan slope tunnel that changes.
Tunnel entrance mileage DK277+973 exports mileage DK278+773, overall length 800m.It is walked at northeast to southwest in tunnel
To, wear existing Kaiyang branch railway line under DK278+050~+110 sections of barrel, intersection point mileage DK278+083,37 ° of the plane angle of cut
05′.Both wired is single-track railway, and newly built railway is double track railway, designs speed per hour 200km/h, both wired to wear under bored tunnel,
Tunnel Internal periphery clear span is greater than 12m, and excavation width is greater than 14m.Both wired super 30m of direction tunnel excavation width, the two rail level are high
Difference about 14m, tunnel vault are super shallow-buried tunnel away from rail level height difference about 5m.It is effectively guaranteed construction quality, existing railway just
The safety often runed and constructed.
The above is that the ruggedized construction and construction of existing railway are worn under explaining through diagrams a kind of Large span tunnel of the present invention
Some principles of method are not intended to for the present invention being confined in shown and described specific structure and the scope of application, therefore all
All corresponding modifications that may be utilized and equivalent, belong to the applied the scope of the patents of the present invention.
Claims (7)
1. wearing the ruggedized construction of existing railway under Large span tunnel, existing railway (10) is crossed under newly built tunnels below and wears section
(21), ruggedized construction includes that a section ruggedized construction is worn under existing railway ruggedized construction, newly built tunnels, it is characterized in that: the existing iron
Road ruggedized construction is included in Left-side support stake (12a), barrel support stake (12b) and the right side that existing railway (10) two sides are set in a row
Collateral support stake (12c), wherein Left-side support stake (12a), Right side support stake (12c) are located at the excavation that section (21) are worn under newly built tunnels
Other than sideline (20), barrel support stake (12b) is vertically passed through and is worn section (21) under newly built tunnels, Left-side support stake (12a), barrel branch
Support stake borehole safeguard structure is arranged in support stake (12b) and Right side support stake (12c) outside；In ipsilateral Left-side support stake (12a) and hole
Body support stake (12b), barrel support stake (12b) and Right side support stake (12c) stake top be respectively set left side D type just beam (13a),
Right side D type just beam (13b), with two across across wearing section (21) under newly built tunnels；Just beam (13a), right side D type be just for D type on the left of two sides
Along the crossbeam (14) of existing railway (10) extending direction interval setting both ends connection fixed thereto, existing railway between beam (13b)
(10) track (11) is fixed on each crossbeam (14).
2. the ruggedized construction of existing railway is worn under Large span tunnel as described in claim 1, it is characterized in that: the Left-side support stake
(12a), barrel support stake (12b) and Right side support stake (12c) is reinforced concrete structure, support stake borehole safeguard structure packet
The retaining wall (17) around pile body is included, and is being arranged at intervals at retaining wall (17) outer steel pipe stake (15) close to existing railway (10) side,
And the gear tiny fragments of stone, coal, etc. steel plate (16) of steel-pipe pile (15) outside is set on pile body top.
3. the ruggedized construction of existing railway is worn under Large span tunnel as described in claim 1, it is characterized in that: under the newly built tunnels
Wearing section ruggedized construction includes advance support, preliminary bracing and liner structure；Preliminary bracing is by system anchor bolt (22), preliminary bracing knot
Structure (24) is constituted, and wears section (21) country rock under preliminary bracing structure (24) covering newly built tunnels, system anchor bolt (22) is circumferentially spaced-apart to be set
It is placed in the country rock in arch, abutment wall portion；The circumferentially spaced-apart super-front large pipe shed (23) squeezed into the country rock of arch of the advance support；Institute
It states liner structure liner structure (26) is compound by secondary liner structure (25) and three times and constitute, waterproof layer (27) is set to secondary lining
It builds between structure (25), three times liner structure (26).
4. the ruggedized construction of existing railway is worn under Large span tunnel as described in claim 1, it is characterized in that: the secondary lining knot
Structure (25), three times liner structure (26) are reinforced concrete structure.
5. the construction method of the ruggedized construction of existing railway is worn under the Large span tunnel as described in Claims 1-4 any one, including
Following steps:
1. surveying and locating determines Left-side support stake (12a), barrel support stake (12b) and Right side support in existing railway (10) two sides
Stake position (12c)；
2. performing two sides Left-side support stake (12a), barrel support stake (12b) and Right side support stake (12c)；
3. installing two left side D types just beam (13a), right side D type just beam (13b), wears and put under the track (11) of existing railway (10)
Crossbeam (14), just just beam (13b) is connected as one for beam (13a), right side D type with D type on the left of two sides at the both ends of crossbeam (14)；
4. applying before excavation super-front large pipe shed (23), being performed in time after excavation using being worn section (21) under mechanical excavation newly built tunnels
System anchor bolt (22), preliminary bracing structure (24) and secondary liner structure (25)；
5. after the secondary liner structure (25) after be worn in section (21) under newly built tunnels reaches design strength, barrel support is removed in truncation
Stake (12b) performs guarded drainage facility and liner structure (26) three times in barrel support stake (12b) coverage.
6. the construction method of the ruggedized construction of existing railway is worn under Large span tunnel as claimed in claim 5, it is characterized in that: the step
Suddenly 2. in, Left-side support stake (12a), barrel support stake (12b) and Right side support stake (12c) is caissons, prior to it before borehole
Construction gear tiny fragments of stone, coal, etc. steel plate (16), steel-pipe pile (15) and retaining wall (17) outside position.
7. the construction method of the ruggedized construction of existing railway is worn under Large span tunnel as claimed in claim 5, it is characterized in that: the step
Suddenly 3. carry out in the following order, first side Left-side support stake (12a) and barrel support stake (12b), barrel support stake (12b) with
The stake top setting left side D type of Right side support stake (12c) just beam (13a), right side D type just beam (13b)；Extract existing railway (10)
Sleeper under track (11) is worn and puts crossbeam (14)；Stake (12b), barrel branch are supported in other side Left-side support stake (12a) and barrel
Left side D type just beam (13a), right side D type just beam (13b) is respectively set in the stake top of support stake (12b) and Right side support stake (12c)；It is horizontal
By bolt, just just beam (13b) is connected as one for beam (13a), right side D type with D type on the left of two sides at the both ends of beam (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910046074.1A CN109989767A (en) | 2019-01-17 | 2019-01-17 | The ruggedized construction and construction method of existing railway are worn under Large span tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910046074.1A CN109989767A (en) | 2019-01-17 | 2019-01-17 | The ruggedized construction and construction method of existing railway are worn under Large span tunnel |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344833A (en) * | 2019-08-16 | 2019-10-18 | 招商局重庆交通科研设计院有限公司 | Tunnel excavation support structure and method for tunnel construction |
| CN110529120A (en) * | 2019-08-14 | 2019-12-03 | 中铁六局集团太原铁路建设有限公司 | VI grade of country rock shallow buried covered excavation loess tunnel, which is cut, invades limit structures construction method |
| CN111236949A (en) * | 2020-01-17 | 2020-06-05 | 中铁二院工程集团有限责任公司 | Small-angle cross tunnel construction method |
| CN111350106A (en) * | 2020-03-26 | 2020-06-30 | 西安建筑科技大学 | Railway track temporary supporting structure and construction method thereof |
| CN111485903A (en) * | 2020-04-22 | 2020-08-04 | 陕西铭捷交通工程有限公司 | Jacking frame interchange construction method based on self-anchored prestressed overhead system |
| CN113605902A (en) * | 2021-08-26 | 2021-11-05 | 山东省交通规划设计院集团有限公司 | Construction method of underpass railway roadbed tunnel |
| CN114033389A (en) * | 2021-10-28 | 2022-02-11 | 中国建筑土木建设有限公司 | Construction method of mountain city tunnel crossing existing railway |
| CN114182583A (en) * | 2021-11-30 | 2022-03-15 | 上海同济工程咨询有限公司 | Supporting structure of temporary beam |
| CN114703895A (en) * | 2022-03-04 | 2022-07-05 | 中铁第五勘察设计院集团有限公司 | Reinforced structure and construction method for small-included-angle downward-penetrating construction of open-cut tunnel |
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| CN113605902A (en) * | 2021-08-26 | 2021-11-05 | 山东省交通规划设计院集团有限公司 | Construction method of underpass railway roadbed tunnel |
| CN113605902B (en) * | 2021-08-26 | 2024-03-29 | 山东省交通规划设计院集团有限公司 | Construction method of underpass railway bed tunnel |
| CN114033389A (en) * | 2021-10-28 | 2022-02-11 | 中国建筑土木建设有限公司 | Construction method of mountain city tunnel crossing existing railway |
| CN114182583A (en) * | 2021-11-30 | 2022-03-15 | 上海同济工程咨询有限公司 | Supporting structure of temporary beam |
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| CN114703895A (en) * | 2022-03-04 | 2022-07-05 | 中铁第五勘察设计院集团有限公司 | Reinforced structure and construction method for small-included-angle downward-penetrating construction of open-cut tunnel |
| CN114703895B (en) * | 2022-03-04 | 2023-11-17 | 中铁第五勘察设计院集团有限公司 | Reinforcing structure for downward penetrating construction of open cut tunnel with small included angle and construction method |
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