CN102277839A - Open hole construction additionally arranged on existing electrified railway and rapid construction method thereof - Google Patents
Open hole construction additionally arranged on existing electrified railway and rapid construction method thereof Download PDFInfo
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- CN102277839A CN102277839A CN 201110110035 CN201110110035A CN102277839A CN 102277839 A CN102277839 A CN 102277839A CN 201110110035 CN201110110035 CN 201110110035 CN 201110110035 A CN201110110035 A CN 201110110035A CN 102277839 A CN102277839 A CN 102277839A
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Abstract
The invention discloses an open hole construction additionally arranged on an existing electrified railway, which has the characteristics of convenience for construction and good safety and can effectively avoid interference on railway operation in a construction process. The open hole construction comprises an inner side wall (10), an outer side wall (20) and an arch ring (30) which adopt a reinforced concrete structure. The open hole construction is characterized in that the lower end of the arch ring (30) is connected with the top surfaces of the inner side wall (10) and the outer side wall (20) into a whole and forms slab staggering structures (11, 21) together with inner side walls of the inner side wall (10) and the outer side wall (20). A rapid construction method of the open hole construction comprises the following steps of: 1, constructing the inner side wall (10) and the outer side wall (20) by sections; 2, after concrete of the inner side wall (10) and the outer side wall (20) reaches a design strength, arranging fixed rails (50) on the top surfaces of the slab staggering structures (11, 21); 3, hoisting an arch trolley (40) onto the rails (50) by sections, installing erection frameworks of an inner template (42) and an outer template (43); and 4, pouring concrete of the arch ring (30).
Description
Technical field
The present invention relates to electrified railway, particularly a kind of existing electrified railway increases builds the open cut tunnel structure, and this increases the rapid constructing method of building the open cut tunnel structure.
Background technology
In existing railway line, because the restriction of advance works input, duration and circuit route selection, a lot of roadbed gradient slopes have appearred, the part side slope deforms under factor effects such as natural weathering Erosion, earthquake, heavy showers, cracking, supporting intensity descend, even landslide, situations such as disrupted circuit operation, operation has caused great operation security hidden danger and economic loss to railway line.Therefore when roadbed side slope is handled, in the shortest time, recover normally to be open to traffic, farthest reduce the influence of engineering construction, and guarantee construction safety railway transportation.Slope Treatment means in routine can not be eliminated operation security hidden danger fully, or its engineering input is huge, when not having economic rationality, can increase on existing roadbed basis and build the open cut tunnel engineering, to realize the permanent protection to regional circuit.
On existing line, increase the difficulty of building the open cut tunnel engineering and be, need under the situation that contact net does not cut off the power supply, construct; Must guarantee to drive a vehicle and constructor's safety; Consider the influence of electrification railway contact net to the construction operation personnel.
At present, common existing electrified railway increases the job practices of building open cut tunnel following two kinds:
One, utilizes " skylight " time of catenary maintenance, increase and build open cut tunnel
" skylight " is exactly to vacate a period of time not drive a vehicle in route map of train, leaves catenary maintenance for and uses.And " comprehensive skylight " is exactly to allow units such as the worker is engaged in, electricity affair all participate in into, at one time, same section keeps in repair together and construct." skylight " time was generally 2 hours, how at night.Still there are many problems in the aspects such as skylight point comprehensive utilization and large-scale technical operation skylight tissue of cashing, construct at the skylight point, mainly show:
(1) the skylight point is cashed and be can not get abundant assurance.The busy trunk lines ability is very nervous, and passenger and freight train mix to run, and surge in traffic is bigger, causes to exist unbalancedly on stage, seasonality, the flow direction, and " having some " or comprehensive skylight points such as " no points " are cashed not enough phenomenon and happened occasionally; In critical periods such as Spring Festival holidays, summer holidays, flood controls, owing to increase temporary passenger train in a large number or be subjected to the water damage influence, bigger to the normal transport interference, cause the decline of skylight encashment ratio.
(2) comprehensive utilization of construction skylight point is insufficient.Part unit's constructure scheme, construction organization, safety measure are not implemented; Equipment management unit is not tight to check on to construction safety agreement, safety supervision, construction quality, and causing in the comprehensive skylight point does not have construction operation main body unit in multiplex's kind, the large formation warfare; Each unit in charge of construction, operating personnel, work tool lack to be made overall plans and coordinate; Little work is done by part unit in charge of construction, a little bigger, and workload is not full in the point, and the pin point is untimely, and wasting of resources phenomenon in skylight is comparatively general.
(3) large-scale technical operation skylight organizes difficulty big.Because figure does not decide the skylight point, large-scale in addition technical operation train reception and departure quantity is big, direction is many, and shunting service is frequent, and standing, a track switch is many, interlock connection is complicated, organizes difficulty big; The part passenger vehicle by parking change by, change that the acclerating road switch task is heavy, interlock connection changes greatly, influence basin is wide.
Tunnel reconstruction carried out in " skylight " time, and the construction period is long, and efficient is low, and the organism of production difficulty is big, and difficult coordination easily produces driving accident, and influences transport capacity.As 1991 to 1998, system-wide caused the driving major accident up to more than 40 because of the construction on the existing line.
Adopt this construction scheme, as finish the construction of the long tunnel long joining section of 30m, estimate that the engineering time is 120 days.The key step of construction is as follows:
1. under speed limit 25km/h condition, apply the abutment wall lining cutting earlier;
2. set up the steel form of arch inner edge, steel form is 6～9m along the tunnel longitudinal length, and the steel form below must be provided with all-insulated plate, to guarantee insulation;
3. lining cutting reinforcing bar in colligation arch founds side template and exterior sheathing, and pumping of concrete is built;
4. concrete curing
Repeat operation 2. to 4., finish newly-built open cut tunnel lining cutting up to applying.
5. apply the arch waterproofing course, the stone that bankets, lift height a 0.3～0.5m are rammed in symmetrical layering.Because the engineering time all carries out in " skylight " time, staff and facility are in place and withdraw, and just need for 1/3～1/4 time, so this scheme exists the construction period long, and the construction organization difficulty, construction is to runing very big, the ineffective shortcoming of interference.In addition, because the engineering time is long, security incident takes place easily.
Two, set up anti-radio station car, increase and build open cut tunnel
Anti-radio station car also claims multifunctional frame type prevent electric working vehicle, and length is generally 6～9m, and it is that truss with both sides is connected and fixed top frame girder, is provided with all-insulated plate below the frame girder of top, for the ease of preventing the mobile of radio station car, is fixed with road wheel in the truss lower end.Also have fixing protective screening on the frame girder of top, can install steel form.
Adopt this construction scheme, as finish the construction of the long tunnel long joining section of 30m, estimate that the engineering time is 70 days.The key step of construction is as follows:
1. under speed limit 25km/h condition, detain rail earlier, set up the walking rail of anti-radio station car then;
2. set up anti-radio station car (containing the arch steel form) in " skylight " time, chassis length is 6m, and the steel form below must be provided with all-insulated plate, to guarantee insulation;
3. under the protection of anti-radio station car, apply the abutment wall lining cutting;
4. lifting arch steel form is in place, colligation arch lining cutting reinforcing bar, and upright side template and exterior sheathing, pumping of concrete is built;
5. concrete curing;
6. reduce steel form (demoulding), anti-radio station garage goes to next position;
Repeat operation 3.～6., finish newly-built open cut tunnel lining cutting up to applying;
7. apply the arch waterproofing course, the stone that bankets, lift height a 0.3～0.5m are rammed in symmetrical layering.
This scheme is in place and remove anti-radio station car, as finishes long 30 meters newly-built open cut tunnel and need use 15 " skylight " times, and all the other construction periods, current train needed speed limit 25km/h.
Because the engineering time need take part " skylight " time, and current train needs speed limit 25km/h, so this scheme exists the construction period still longer, and the construction organization difficulty, construction is to the great shortcoming of operation interference.
In the Eleventh Five-Year Plan of railway construction in China, a large amount of newly-built two wires railway engineerings is arranged, be subjected to the influence of geology, landform, existing building, need inevitably to increase and build the open cut tunnel transformation, therefore, a kind of safety, efficient and can avoid the existing electrified railway that railway operation disturbs increased and build open cut tunnel structure and job practices thereof is provided, will saves a large amount of reconstruction investments and help giving full play to the transport benefits of existing railway.
Summary of the invention
Technical problem to be solved by this invention provides a kind of existing electrified railway and increases and build open cut tunnel structure, have the good characteristics of easy construction and safety, and work progress can be avoided the interference to railway operation effectively.
The present invention solves this technical problem the technical scheme that is adopted: the existing electrified railway of the present invention increases builds the open cut tunnel structure, comprise the interior abutment wall that adopts reinforced concrete structure, outer abutment wall and arch ring, it is characterized in that: the end face of the lower end of described arch ring and interior abutment wall, outer abutment wall is connected to form one, and forms the faulting of slab ends structure with the inside wall of interior abutment wall, outer abutment wall.
Another technical problem to be solved by this invention provides a kind of job practices of extending electrified railroad tunnel, and this job practices has the characteristics of safety, high efficiency, and can avoid the interference to railway operation effectively.
The technical solution adopted for the present invention to solve the technical problems is: the existing electrified railway of the present invention increases the rapid constructing method of building the open cut tunnel structure, comprises the steps: 1. segmented interior abutment wall, the outer abutment wall constructed; 2. after treating that interior abutment wall, outer abutment wall concrete reach design strength, on its faulting of slab ends structure end face, lay trapped orbit; 3. segmented the arch chassis is lifted on the track, inner formword, exterior sheathing formwork erection are installed; 4. construct arch ring.
The invention has the beneficial effects as follows that safety is good, short construction period because of not needing to take " skylight " time, so can avoid the interference to railway operation effectively, helps giving full play to the transport benefits of existing railway.
Description of drawings
This manual comprises following five width of cloth accompanying drawings:
Fig. 1 is that the existing electrified railway of the present invention increases the section structure schematic diagram of building the open cut tunnel structure;
Fig. 2 be the existing electrified railway of the present invention increase build in the open cut tunnel structure in the syndeton schematic diagram of abutment wall and arch ring;
Fig. 3 is that the existing electrified railway of the present invention increases the syndeton schematic diagram of building open cut tunnel structure China and foreign countries' abutment wall and arch ring;
Fig. 4 is that the existing electrified railway of the present invention increases and builds the structural representation that the open cut tunnel rapid constructing method uses the arch chassis;
Fig. 5 is that the existing electrified railway of the present invention increases the schematic diagram of building the open cut tunnel rapid constructing method;
Member shown in the figure, position and pairing mark: interior abutment wall 10, faulting of slab ends structure 11, outer abutment wall 20, faulting of slab ends structure 21, arch ring 30, arch chassis 40, insulating slab 41, inner formword 42, exterior sheathing 43, track 50.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
With reference to Fig. 1, existing electrified railway of the present invention increases builds the open cut tunnel structure, comprise the interior abutment wall 10, outer abutment wall 20 and the arch ring 30 that adopt reinforced concrete structure, the end face of the lower end of described arch ring 30 and interior abutment wall 10, outer abutment wall 20 is connected to form one, and forms faulting of slab ends structure 11,21 with the inside wall of interior abutment wall 10, outer abutment wall 20.Bright increasing built the straight flange wall open cut tunnel form of structure that the structure employing of open cut tunnel hole is increased, widened, and reserves arch chassis 40 formwork erections and walking space at interior abutment wall 10, outer abutment wall 20 tops.For guaranteeing the structural stability of open cut tunnel engineering, interior abutment wall 10, outer abutment wall 20 and arch ring 30 adopt reinforced concrete structure.With reference to Fig. 2 and Fig. 3, abutment wall 10, outer abutment wall 20 are provided with at the connecting portion with arch ring 30 and strengthen arrangement of reinforcement and longitudinal reinforcement in described, to strengthen the strength and stiffness of arch wall connecting portion, arch ring 30 arrangements of reinforcement are fixedlyed connected with longitudinal reinforcement with this reinforcement arrangement of reinforcement, to guarantee vertical globality of open cut tunnel lining cutting.
With reference to Fig. 4 and Fig. 5, existing electrified railway of the present invention increases the rapid constructing method of building the open cut tunnel structure, comprises the steps:
1. abutment wall 10, outer abutment wall 20 in segmented the constructing.Main working procedure is, communication, signal power cable move change and transition → open cut tunnel boundary of works area button rail → excavation in abutment wall 10, outer abutment wall 20 bases → construction cross-tie and abutment wall basis → perform shop fixtures → merogenesis to pour into bright interior abutment wall 10, outer abutment wall 20 concretes.
2. after abutment wall 10, outer abutment wall 20 concretes reach design strength in treating, on its faulting of slab ends structure 11,21 end faces, lay trapped orbit 50.
3. segmented arch chassis 40 is lifted on the track 50, and inner formword 42, exterior sheathing 43 are installed.Arch chassis 40 is made of arc bow member, basic longeron, running gear and form removal control valve, and it is purpose that its design lifts, conveniently installs, makes things convenient for form removal with convenient construction, convenience.
4. pour into arch ring 30 concretes.
For further improving work efficiency, can be before 3. described step lift arch chassis 40, detachable fitting insulating panels 41 on the intrados of arch chassis 40.
Compare with existing job practices, the present invention has that safety is good, the characteristics of short construction period, because of not needing to take " skylight " time, so can avoid the interference to railway operation effectively, helps giving full play to the transport benefits of existing railway.
The above existing electrified railway of the present invention that just explains through diagrams increases builds some principles that open cut tunnel is constructed, existing electrified railway increases the rapid constructing method of building open cut tunnel, be not be the present invention to be confined to shown in and in described concrete structure and the scope of application, so every the corresponding modify and equivalent that might be utilized, the claim that all belongs to the present invention and applied for.
Claims (4)
1. existing electrified railway increases builds the open cut tunnel structure, comprise the interior abutment wall (10) that adopts reinforced concrete structure, outer abutment wall (20) and arch ring (30), it is characterized in that: the end face of the lower end of described arch ring (30) and interior abutment wall (10), outer abutment wall (20) is connected to form one, and forms faulting of slab ends structure (11,21) with the inside wall of interior abutment wall (10), outer abutment wall (20).
2. existing electrified railway as claimed in claim 1 increases builds the open cut tunnel structure, it is characterized in that: abutment wall (10), outer abutment wall (20) are provided with at the connecting portion with arch ring (30) and strengthen arrangement of reinforcement and longitudinal reinforcement in described, and arch ring (30) arrangement of reinforcement is fixedlyed connected with longitudinal reinforcement with this reinforcement arrangement of reinforcement.
3. existing as claimed in claim 1 or 2 electrified railway increases the rapid constructing method of building the open cut tunnel structure, comprises the steps:
1. segmented interior abutment wall (10), the outer abutment wall (20) constructed;
2. after treating that interior abutment wall (10), outer abutment wall (20) concrete reach design strength, on its faulting of slab ends structure (11,21) end face, lay trapped orbit (50);
3. segmented arch chassis (40) is lifted on the track (50), inner formword (42), exterior sheathing (43) formwork erection are installed;
4. pour into arch ring 30 concretes.
4. increase the rapid constructing method of building the open cut tunnel structure as existing electrified railway as described in the claim 3, it is characterized in that: it is preceding that 3. described step lifts arch chassis (40), detachable fitting insulating panels (41) on the intrados of arch chassis (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110110035 CN102277839A (en) | 2011-04-29 | 2011-04-29 | Open hole construction additionally arranged on existing electrified railway and rapid construction method thereof |
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| CN 201110110035 CN102277839A (en) | 2011-04-29 | 2011-04-29 | Open hole construction additionally arranged on existing electrified railway and rapid construction method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444089A (en) * | 2012-01-05 | 2012-05-09 | 中铁第一勘察设计院集团有限公司 | Prefabricated part assembled windproof open cut tunnel in gale region and joint assembling and connecting method thereof |
| CN102691242A (en) * | 2012-06-15 | 2012-09-26 | 中铁第四勘察设计院集团有限公司 | Method for changing existing roadbed to tunnel without interrupting operation of railway |
| CN103244183A (en) * | 2013-05-28 | 2013-08-14 | 中铁上海设计院集团有限公司 | Construction method for additionally constructing shed tunnel contact network in water disaster area |
| CN106050273A (en) * | 2016-07-20 | 2016-10-26 | 中铁二院工程集团有限责任公司 | Straight-wall-plate-girder semi-assembling type open-cut tunnel structure and construction method thereof |
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| CN102146798A (en) * | 2011-03-02 | 2011-08-10 | 中国土木工程集团有限公司 | Arch ring lining trolley for additionally building open cut tunnel on electrified railway business line and construction method of arch ring lining trolley |
| CN202073047U (en) * | 2011-04-29 | 2011-12-14 | 中铁二院工程集团有限责任公司 | Increased open cut tunnel structure for existing electrified railway |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444089A (en) * | 2012-01-05 | 2012-05-09 | 中铁第一勘察设计院集团有限公司 | Prefabricated part assembled windproof open cut tunnel in gale region and joint assembling and connecting method thereof |
| CN102691242A (en) * | 2012-06-15 | 2012-09-26 | 中铁第四勘察设计院集团有限公司 | Method for changing existing roadbed to tunnel without interrupting operation of railway |
| CN103244183A (en) * | 2013-05-28 | 2013-08-14 | 中铁上海设计院集团有限公司 | Construction method for additionally constructing shed tunnel contact network in water disaster area |
| CN103244183B (en) * | 2013-05-28 | 2015-09-16 | 中铁上海设计院集团有限公司 | A kind of water damage location increases builds hangar tunnel contact network construction method |
| CN106050273A (en) * | 2016-07-20 | 2016-10-26 | 中铁二院工程集团有限责任公司 | Straight-wall-plate-girder semi-assembling type open-cut tunnel structure and construction method thereof |
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Application publication date: 20111214 |