CN107604823A - It is a kind of that the construction method for shipping beam is crossed by railway - Google Patents
It is a kind of that the construction method for shipping beam is crossed by railway Download PDFInfo
- Publication number
- CN107604823A CN107604823A CN201710975791.3A CN201710975791A CN107604823A CN 107604823 A CN107604823 A CN 107604823A CN 201710975791 A CN201710975791 A CN 201710975791A CN 107604823 A CN107604823 A CN 107604823A
- Authority
- CN
- China
- Prior art keywords
- steel
- platform
- railway
- pier
- lumps
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
It is a kind of that the construction method for shipping beam is crossed by railway.It is prefabricated that it includes steel platform;Laying protection steel plate;The interim pier of casting concrete;Transport beam road in drop-over both sides;Lay lumps of wood boarding;Steel platform traction is in place;Place the support of inclined-plane steel in lay railway sleepers pier and both ends of platform space;Beam-transporting Vehicle passes through steel platform;Remove steel platform;Remove sleeper and the support of inclined-plane steel;Remove lumps of wood plank;The interim pier of dismantling concrete;Remove protection steel plate;Recover the steps such as circuit.It is provided by the invention to cross how Beam-transporting Vehicle when the construction method for shipping beam solves Urban Bridge construction safely and fast by existing railway and reduces the problem to existing railway Influence to operation by railway.The present invention takes a series of technical measures, it is ensured that the safety of construction overall process existing railway track and related facility, ensure that the transportation safety of Beam-transporting Vehicle, reduces construction risk, saved cost of investment, improved fortune beam efficiency.
Description
Technical field
The invention belongs to Municipal Engineering Construction technical field, the construction party of beam is shipped more particularly to a kind of crossed by railway
Method.
Background technology
With the continuous progress of Urbanization Progress, the existing highway communication in city can not meet present situation transport need, therefore
Need a large amount of reconstructions, enlarging, newly-built municipal highway traffic, but because existing railway circuit plans mostly, it is more early to build, railway is all
Side infrastructure construction is substantially perfect, and this has resulted in the shape that new (changing) builds municipal highway circuit and existing railway crisscross traffic
Condition rolls up.Past highway and railway intersection generally use level crossing, when train is by above-mentioned level crossing, highway
Temporarily break off a friendship.But with the quickening of the railroad train speed of service and the increasing of freight volume, this level crossing is existing to pacify
Full property difference and day by day show the drawbacks of influence highway normal traffic, therefore be gradually changed to intersection, on point across and undercrossing tunnel
Two ways, highway and railway is separated operation, substantially increase security.In upper across mode work progress, new highway
Bridge is faced with that railway both sides town and country existing building is more, influences the current situation of Beam-transporting Vehicle, and due to Beam-transporting Vehicle category
In overlength, transfinite, overweight vehicle, therefore existing urban and suburban roads is difficult to meet its current condition.If the newly-built Yun Liang roads detoured,
Removal need to be reorganized, cost is too high, and the duration can not ensure;According to newly-built temporary road degree of lip-rounding formula, then it is unfavorable for traffic safety,
And construction cost is high, long construction period, can not ensure the duration.
The content of the invention
In order to solve the above problems, it is an object of the invention to provide a kind of crossed by railway to ship the construction method of beam.
In order to achieve the above object, provided by the invention crossed by railway ships beam construction method and includes in order carrying out
The following steps:
1) polylith tabular steel platform is made, a towing pad is reserved respectively at the corner of steel platform surface and setting one rises
Drop formula universal wheel;
2) one layer of aggregate chips is first laid on the ground of two existing railway both sides in construction area, then on aggregate chips layer upper berth
If one layer of protection steel plate, to be protected to existing cable;
3) supporting module on the ground on protection steel plate and between two existing railways, and coagulation is poured in template
Soil and two interim side piers and a Temporary central pier are made, wherein side pier top surface is in high outside and low outside faulting of slab ends shape, interior
Side top surface at the top of rail with flushing;The top surface of Temporary central pier at the top of rail with flushing;
4) fill two-ash broken stones slope on the outside ground of side pier, and be compacted with small rammer, with Yun Liang roads
Road drop-over;
5) one layer of lumps of wood, lumps of wood both ends difference are laid along perpendicular to rail direction on two one steel rails of every existing railway
Be placed on the inner side top surface of interim side pier and the top surface outside left of Temporary central pier, then on the lumps of wood along parallel to
Lay one layer of plank and form lumps of wood boarding in rail direction;
6) steel platform is supported using jack, adjusts lift universal wheel and roller thereon is stretched out under steel platform
End, then the steel wire rope on loading machine is fastened on towing pad and steel platform is drawn in lumps of wood boarding, then with very heavy
Topmast props up steel platform, adjusts lift universal wheel and makes inside roller retraction steel platform thereon, and unloading jack puts down steel
Platform falls to be consolidated in lumps of wood boarding surface, pad, draws polylith steel platform and continuous laying successively in every existing railway
In lumps of wood boarding;The gap between steel platform on two existing railways is filled using sleeper pier afterwards;
7) a row inclined-plane steel support is laid in the outer top surface of each interim side pier, and by pre- on interim side pier
Bury bolt the support of inclined-plane steel and interim side pier are fixed together;The outside inclined downward in surface of inclined-plane steel support, now inclined-plane steel
The inside top of support flushes with steel platform surface;
8) after the completion of above-mentioned construction, Beam-transporting Vehicle is from existing railway side by the way that two-ash broken stones slope, inclined-plane steel are supportted, steel is put down
Platform is moved to opposite side;
9) after often completing a collection of fortune beam task, unscrew pre-embedded bolt first, remove the support of inclined-plane steel, withdraw from sleeper pier;Afterwards
Steel platform is supported using jack, lift universal wheel is adjusted and makes the lower end of roller stretching steel platform thereon, utilize dress
Carrier aircraft is drawn polylith steel platform and removed successively;Last manual demolition lumps of wood boarding, recovers existing railway operation;
10) when needing to transport beam again, repeat step 5)-step 9), treat that all beams all after the completion of transport, are removed interim
Side pier and Temporary central pier, protection steel plate is withdrawn from, recover existing railway original state.
In step 1), described steel platform is made up of steel plate panel, plurality of steel plates bottom plate and Duo Gen I-steel;Wherein steel
Plate face plate is rectangle structure, is horizontally disposed with;More I-steel spacing distances are arranged side by side, and upper end wing plate is welded on steel plate panel
Bottom surface on;Steel plate bottom plate is string configuration, and plurality of steel plates bottom plate spacing distance is arranged side by side, with the side vertical with I-steel
Formula is welded on the lower end wing plate of I-steel.
In step 1), the size of described steel platform upper steel plate panel is 4m × 2.4m × 20mm, the chi of steel plate bottom plate
Very little is 2.4m × 0.5m × 20mm;I-steel uses I18 I-steel.
In step 1), described lift universal wheel be arranged in the steel plate bottom plate interspaces at steel platform both ends with most
The crossover location of outside I-steel, it is made up of hoistable platform, roller and regulation screw mandrel, wherein hoistable platform is welded on I-steel
On, regulation screw mandrel is located at upper end, and roller is located at lower end.
In step 2), the thickness of described aggregate chips layer is 5cm;The size for protecting steel plate is 6m × 1.5m × 20mm;
In step 3), the width of inner side top surface is 0.3m, inner side top surface and outer top surface on described interim side pier
Between difference in height be 0.15m.
In step 5), the size of the described lumps of wood is 400cm × 10cm × 10cm;The size of plank be 250cm ×
25cm×5cm。
Provided by the invention crossed by railway is shipped the construction method of beam and had the advantages that:Solves Urban Bridge
How Beam-transporting Vehicle safely and fast by existing railway and is reduced to the problem of existing railway Influence to operation during construction.This hair
It is bright to take a series of technical measures, it is ensured that the safety of construction overall process existing railway track and related facility, to ensure that fortune
The transportation safety of beam vehicle, construction risk is reduced, cost of investment has been saved, has improved fortune beam efficiency.
Brief description of the drawings
The structural representation that Fig. 1 is built when crossing the construction method for shipping beam by railway for use is provided by the invention.
The structure transverse face signal that Fig. 2 is built when crossing the construction method for shipping beam by railway for use is provided by the invention
Figure.
Fig. 3 is steel platform stereogram.
Fig. 4 is steel platform schematic cross-sectional view.
Fig. 5 is steel platform schematic longitudinal section.
Embodiment
Provided by the invention crossed by railway is shipped by the construction method of beam carried out with specific embodiment below in conjunction with the accompanying drawings
Describe in detail.
Certain city road planning is city thoroughfare, and near suburban railway station, construction area is served as theme overpass
Structure, on across existing electrified railway, needed railway to set up 84 48mT beams, monolithic T beams weight 188t, scene and peripheral path altogether
Do not possessed the execution conditions of railway fortune beam.The engineering uses construction method provided by the invention.
As Figure 1-Figure 5, what the present embodiment provided crossed by railway, which ships beam construction method, includes in order carrying out
The following steps:
1) polylith tabular steel platform 5 is made, reserves a towing pad 12 and setting one respectively at the surface corner of steel platform 5
Individual lift universal wheel 13;Described steel platform 5 is made up of steel plate panel 9, plurality of steel plates bottom plate 10 and Duo Gen I-steel 11;Its
Light plate panel 9 is rectangle structure, is horizontally disposed with;The more spacing distances of I-steel 11 are arranged side by side, and upper end wing plate is welded on
On the bottom surface of steel plate panel 9;Steel plate bottom plate 10 is string configuration, and the spacing distance of plurality of steel plates bottom plate 10 is arranged side by side, with
The vertical mode of I-steel 11 is welded on the lower end wing plate of I-steel 11.Every piece of upper steel plate panel 9 of steel platform 5 in the present embodiment
Size be 4m × 2.4m × 20mm, the size of steel plate bottom plate 10 is 2.4m × 0.5m × 20mm, altogether using 5 pieces;I-steel 11
Using I18 I-steel, altogether using 8.Lift universal wheel 13 is arranged in 10 spaces of steel plate bottom plate at the both ends of steel platform 5
With the crossover location of outermost I-steel 11, it is made up of hoistable platform, roller and regulation screw mandrel, wherein hoistable platform is welded on work
On word steel 11, regulation screw mandrel is located at upper end, and roller is located at lower end.
2) one layer of aggregate chips is first laid on the ground of two existing railway both sides in construction area, then on aggregate chips layer upper berth
If one layer of protection steel plate 1, to be protected to existing cable;In the present embodiment, the thickness of aggregate chips layer is 5cm;Protect steel plate 1
Size is 6m × 1.5m × 20mm;
3) supporting module on the ground on protection steel plate 1 and between two existing railways, and pour in template mixed
Coagulate soil and two interim side piers 2 and a Temporary central pier 14 is made, wherein the top surface of side pier 2 is in high outside and low outside faulting of slab ends
Shape, inner side top surface flush with the top of rail 15;The top surface of Temporary central pier 14 flushes with the top of rail 15;The present embodiment
In, the width of inner side top surface is 0.3m on interim side pier 2, and the difference in height between inner side top surface and outer top surface is 0.15m.
4) fill two-ash broken stones slope on the outside ground of side pier 2, and be compacted with small rammer, with Yun Liang roads
Road drop-over;
5) one layer of lumps of wood, lumps of wood both ends are laid along perpendicular to the direction of rail 15 on two one steel rails 15 of every existing railway
The inner side top surface of interim side pier 2 and the top surface outside left of Temporary central pier 14 are individually positioned in, then on the lumps of wood
Lumps of wood boarding 4 is formed along parallel to the direction of rail 15 one layer of plank of laying;In the present embodiment, the size of the lumps of wood is
400cm×10cm×10cm;The size of plank is 250cm × 25cm × 5cm;
6) steel platform 5 is supported using jack, adjusts lift universal wheel 13 and roller thereon is stretched out steel platform 5
Lower end, then the steel wire rope on loading machine is fastened on towing pad 12 and steel platform 5 is drawn in lumps of wood boarding 4,
Steel platform 5 is supported with jack again, lift universal wheel 13 is adjusted and makes inside roller retraction steel platform 5 thereon, is unloaded
Jack falls steel platform 5 to consolidate in the surface of lumps of wood boarding 4, pad, draws polylith steel platform 5 successively and continuous laying exists
In the lumps of wood boarding 4 of every existing railway;The gap between steel platform 5 on two existing railways is used into sleeper pier afterwards
6 fillings;
7) a row inclined-plane steel support 7 is laid in the outer top surface of each interim side pier 2, and by interim side pier 2
Pre-embedded bolt 8 by inclined-plane steel support 7 and interim side pier 2 be fixed together;The outside inclined downward in surface of inclined-plane steel support 7, this
When inclined-plane steel support 7 inside top flushed with the surface of steel platform 5;
8) after the completion of above-mentioned construction, Beam-transporting Vehicle passes through two-ash broken stones slope, inclined-plane steel support 7, steel from existing railway side
Platform 5 is moved to opposite side;
9) after often completing a collection of fortune beam task, unscrew pre-embedded bolt 8 first, remove inclined-plane steel support 7, withdraw from sleeper pier 6;It
Steel platform 5 is supported using jack afterwards, lift universal wheel 13 is adjusted and makes the lower end of roller stretching steel platform 5 thereon,
Polylith steel platform 5 is drawn successively using loading machine and is removed;Last manual demolition lumps of wood boarding 4, recovers existing iron
Run on road;
10) when needing to transport beam again, repeat step 5)-step 9), treat that all beams all after the completion of transport, are removed interim
Side pier 2 and Temporary central pier 14, protection steel plate 1 is withdrawn from, recovers existing railway original state.
Claims (7)
1. one kind is crossed by railway ships beam construction method, it is characterised in that:Beam construction method is shipped in described being crossed by railway
Including the following steps carried out in order:
1) polylith tabular steel platform (5) is made, a towing pad (12) is reserved respectively at steel platform (5) surface corner and sets
One lift universal wheel (13);
2) one layer of aggregate chips is first laid on the ground of two existing railway both sides in construction area, then lays one on aggregate chips layer
Layer protection steel plate (1), to be protected to existing cable;
3) supporting module on the ground on protection steel plate (1) and between two existing railways, and coagulation is poured in template
Soil and two interim side piers (2) and a Temporary central pier (14) is made, wherein side pier (2) top surface be in it is high outside and low outside
Faulting of slab ends shape, inner side top surface at the top of rail (15) with flushing;The top of the top surface of Temporary central pier (14) and rail (15) is neat
It is flat;
4) two-ash broken stones slope is filled on the outside ground of side pier (2), and is compacted with small rammer, with transporting beam road
Drop-over;
5) one layer of lumps of wood, lumps of wood both ends are laid along perpendicular to rail (15) direction on two one steel rails (15) of every existing railway
The inner side top surface of interim side pier (2) and the top surface outside left of Temporary central pier (14) are individually positioned in, then in side
On wood lumps of wood boarding (4) is formed along parallel to rail (15) direction one layer of plank of laying;
6) steel platform (5) is supported using jack, adjusts lift universal wheel (13) and roller thereon is stretched out steel platform
(5) lower end, then the steel wire rope on loading machine is fastened on towing pad (12) and steel platform (5) is drawn to lumps of wood plank knot
On structure (4), then with jack support steel platform (5), regulation lift universal wheel (13) and put down roller retraction steel thereon
Platform (5) is internal, and unloading jack falls steel platform (5) to consolidate in lumps of wood boarding (4) surface, pad, draw polylith successively
Steel platform (5) and continuous laying is in the lumps of wood boarding (4) of every existing railway;Steel on two existing railways is put down afterwards
Filled using sleeper pier (6) in gap between platform (5);
7) a row inclined-plane steel support (7) is laid in the outer top surface of each interim side pier (2), and passes through interim side pier (2)
On pre-embedded bolt (8) by inclined-plane steel support (7) and interim side pier (2) be fixed together;Under the surface of inclined-plane steel support (7) is outside
Side tilts, and now the inside top of inclined-plane steel support (7) flushes with steel platform (5) surface;
8) after the completion of above-mentioned construction, Beam-transporting Vehicle is put down from existing railway side by two-ash broken stones slope, inclined-plane steel support (7), steel
Platform (5) is moved to opposite side;
9) after often completing a collection of fortune beam task, unscrew pre-embedded bolt (8) first, remove inclined-plane steel support (7), withdraw from sleeper pier (6);
Steel platform (5) is supported using jack afterwards, lift universal wheel (13) is adjusted and roller thereon is stretched out steel platform (5)
Lower end, draw polylith steel platform (5) successively using loading machine and removed;Last manual demolition lumps of wood boarding (4),
Recover existing railway operation;
10) when needing to transport beam again, repeat step 5)-step 9), treat that all beams all after the completion of transport, remove interim side pier
Platform (2) and Temporary central pier (14), protection steel plate (1) is withdrawn from, recover existing railway original state.
2. according to claim 1 crossed by railway ships beam construction method, it is characterised in that:It is described in step 1)
Steel platform (5) be made up of steel plate panel (9), plurality of steel plates bottom plate (10) and more I-steel (11);Wherein steel plate panel (9)
For rectangle structure, it is horizontally disposed with;More I-steel (11) spacing distances are arranged side by side, and upper end wing plate is welded on steel plate panel
(9) on bottom surface;Steel plate bottom plate (10) is string configuration, and plurality of steel plates bottom plate (10) spacing distance is arranged side by side, with work
The vertical mode of word steel (11) is welded on the lower end wing plate of I-steel (11).
3. according to claim 1 crossed by railway ships beam construction method, it is characterised in that:It is described in step 1)
The size of steel platform (5) upper steel plate panel (9) be 4m × 2.4m × 20mm, the size of steel plate bottom plate (10) is 2.4m × 0.5m
×20mm;I-steel (11) uses I18 I-steel.
4. according to claim 1 crossed by railway ships beam construction method, it is characterised in that:It is described in step 1)
Lift universal wheel (13) be arranged in space and outermost I-steel between the steel plate bottom plate (10) at steel platform (5) both ends
(11) crossover location, it is made up of hoistable platform, roller and regulation screw mandrel, wherein hoistable platform is welded on I-steel (11),
Regulation screw mandrel is located at upper end, and roller is located at lower end.
5. according to claim 1 crossed by railway ships beam construction method, it is characterised in that:It is described in step 2)
The thickness of aggregate chips layer be 5cm;The size for protecting steel plate (1) is 6m × 1.5m × 20mm.
6. according to claim 1 crossed by railway ships beam construction method, it is characterised in that:It is described in step 3)
Interim side pier (2) on inner side top surface width be 0.3m, the difference in height between inner side top surface and outer top surface is 0.15m.
7. according to claim 1 crossed by railway ships beam construction method, it is characterised in that:It is described in step 5)
The size of the lumps of wood be 400cm × 10cm × 10cm;The size of plank is 250cm × 25cm × 5cm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710975791.3A CN107604823B (en) | 2017-10-19 | 2017-10-19 | It is a kind of to cross the construction method for shipping beam by railway |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710975791.3A CN107604823B (en) | 2017-10-19 | 2017-10-19 | It is a kind of to cross the construction method for shipping beam by railway |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107604823A true CN107604823A (en) | 2018-01-19 |
CN107604823B CN107604823B (en) | 2018-12-11 |
Family
ID=61077504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710975791.3A Active CN107604823B (en) | 2017-10-19 | 2017-10-19 | It is a kind of to cross the construction method for shipping beam by railway |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107604823B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110373969A (en) * | 2019-07-19 | 2019-10-25 | 郭斯羽 | A kind of anti-jump vehicle transition plates for road rail intersection region |
CN112252155A (en) * | 2020-11-30 | 2021-01-22 | 中交城乡建设规划设计研究院有限公司 | Small-span double-arch bridge structure capable of reducing overall height |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN200988741Y (en) * | 2006-07-07 | 2007-12-12 | 中铁建工集团有限公司 | Over railway line transport mounting positioning trolley |
JP2007321389A (en) * | 2006-05-31 | 2007-12-13 | Nippon Sharyo Seizo Kaisha Ltd | Bridge construction method |
CN201598546U (en) * | 2009-12-08 | 2010-10-06 | 济南金力液压机械有限公司 | Quick telescopic railway span bridge |
CN104652299A (en) * | 2015-02-05 | 2015-05-27 | 中铁六局集团有限公司 | Electrified railway existing bridge and culvert whole-hole moving-out construction method |
CN104787568A (en) * | 2015-03-27 | 2015-07-22 | 华电重工股份有限公司 | Over-line stack pile conveying method and system |
-
2017
- 2017-10-19 CN CN201710975791.3A patent/CN107604823B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007321389A (en) * | 2006-05-31 | 2007-12-13 | Nippon Sharyo Seizo Kaisha Ltd | Bridge construction method |
CN200988741Y (en) * | 2006-07-07 | 2007-12-12 | 中铁建工集团有限公司 | Over railway line transport mounting positioning trolley |
CN201598546U (en) * | 2009-12-08 | 2010-10-06 | 济南金力液压机械有限公司 | Quick telescopic railway span bridge |
CN104652299A (en) * | 2015-02-05 | 2015-05-27 | 中铁六局集团有限公司 | Electrified railway existing bridge and culvert whole-hole moving-out construction method |
CN104787568A (en) * | 2015-03-27 | 2015-07-22 | 华电重工股份有限公司 | Over-line stack pile conveying method and system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110373969A (en) * | 2019-07-19 | 2019-10-25 | 郭斯羽 | A kind of anti-jump vehicle transition plates for road rail intersection region |
CN112252155A (en) * | 2020-11-30 | 2021-01-22 | 中交城乡建设规划设计研究院有限公司 | Small-span double-arch bridge structure capable of reducing overall height |
Also Published As
Publication number | Publication date |
---|---|
CN107604823B (en) | 2018-12-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102926299B (en) | Railway elevating and fixing device and railway bridge and culvert construction method adopting railway elevating and fixing device | |
CN100441779C (en) | Bridge construction method for air prefabrication and translation in place | |
CN103485288B (en) | A kind ofly pass through both wired double-deck jacking culvert construction technology | |
CN106149576B (en) | On removed and construction method of installation across both wired bridge whole groups | |
CN106192620B (en) | A kind of railway ballastless track supporting layer and substructure change method | |
CN110230261B (en) | Mounting construction method for upper frame beam of double-layer synchronous beam | |
CN104499433A (en) | Method for intersection angle high-speed railway underpassing low-clearance girder erection | |
KR101234090B1 (en) | Method for changing girder of railway plate girder bridge | |
CN113957793A (en) | Construction method for prefabricating box girder support in complex urban environment | |
CN105544409B (en) | Double guide beam bridge erecting machine sets up combination beam and now spells a section girder steel construction technology | |
CN107604823B (en) | It is a kind of to cross the construction method for shipping beam by railway | |
CN108708290B (en) | Box bridge frame hollow structure of small-radius railway curve unit and cast-in-place construction method | |
CN106592449A (en) | D-shaped beam reinforced existing double-railway line structure and construction method thereof | |
CN112983493A (en) | Reinforcing structure for shield to closely penetrate large-section bridge and culvert downwards and construction method | |
CN109440653B (en) | Suitable for beam erection construction methods and auxiliary beam moving equipment in special spaces | |
CN111705682A (en) | A construction method and equipment for demolition and reconstruction of superstructure of widened bridge across electrified railway | |
CN208995842U (en) | Level crossing mouth railway roadbed | |
CN202865708U (en) | Railway aerial fixing device | |
CN106274556A (en) | A kind of contact net bar changes shifting method | |
CN217324965U (en) | Face track laying base bridge that combines forever | |
CN212714587U (en) | Equipment for removing and rebuilding superstructure of widened bridge across electrified railway | |
CN105926381A (en) | Method for changing ballast track bed of tunnel to ballastless track under condition of uninterrupted train working | |
CN109797609A (en) | Sharp radius curve railway entirety broken line overhead device and method | |
CN107988854A (en) | A kind of later stage of subway upper cover vehicle base stopping train checkup shed reserves structure | |
CN104234734A (en) | Novel air crossing construction method of deep mine and highland pressure impact coal seam |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |