CN108914966A - A kind of open-cut station main structure and its construction method - Google Patents
A kind of open-cut station main structure and its construction method Download PDFInfo
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- CN108914966A CN108914966A CN201810931409.3A CN201810931409A CN108914966A CN 108914966 A CN108914966 A CN 108914966A CN 201810931409 A CN201810931409 A CN 201810931409A CN 108914966 A CN108914966 A CN 108914966A
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- station
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- station main
- open
- main structure
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
Abstract
The invention discloses a kind of open-cut station main structure and its construction method, the station main body is two layers of twin columns three across box structure, and construction method is：Smooth location sets dewatering well and carries out precipitation, applies drainage of foundation pit measure, apply cast-in-situ bored pile；0.7m depth under excavation of foundation pit is supported to first applies stake top crown beam, and sets up first of bracing members；Continuation is excavated to foundation pit bottom downwards, successively sets up second, the support of third road, places waist rail in time；Underplate concrete structure is poured, side wall waterproof layer is applied, pours part side wall；It applies and supports, remove third road bracing members, pour hardened structure in the remaining sidewall structure in two layers of underground and basement one；Second bracing members are removed, basement one side wall and top board structure is poured, applies waterproof roofing layer and backfill in time, it is backfilled at first of bracing members position, first of bracing members is removed after soil layer compacting and falls to support, and is being backfilled to ground, is being applied platform slab structure and other internal components.
Description
Technical field
The present invention relates to subway engineering technical field of structures, more specifically, it relates to a kind of open-cut station main structure
And its construction method.
Background technique
As domestic main cities subway construction is fast-developing, subway trip has become the most important daily traffic in city
One of selection mode, and with the continuous development of domestic economy, at present in many cities, the construction of Underground Rail Transit is also just
In progress like a raging fire, subway is laid with city integrated piping lane each along city main roads；Subway construction also needs
Various geological conditions are adapted to, meanwhile, complicated underground environment proposes acid test to structure of the subway durability.
The shield construction that open-cut station uses at present makes shield machine poor in construction period flexibility, dismounting repeatedly
Group unloads the dilatory service life of shield machine missed the stop etc. and substantially reduced.Meanwhile launching shaft, received well, the well that turns around are applied
The disintegration of work and shield machine is hung out, additional operating expenses caused by transition etc., makes the engineering cost in shield construction
The every km of valence is increased up to nearly 10% or so compared with the expense that shield machine normally promotes；And miss the stop for the dilatory of shield machine, it is related to
Widen extra charge brought by station, every km increases about 6%~8%.As it can be seen that needing a kind of novel open-cut station master
Body structure and its construction method improve defect present in the non-propulsion job execution in existing shield construction, improve station
The efficiency of construction reduces construction cost, improves the safety of construction.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of open-cut station main structure and its apply
Work method, to solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides the following technical solutions：
A kind of open-cut station main structure, station main body are two layers of twin columns three across box structure, and 3 discrepancy are arranged in station altogether
Mouth, 1 safety exit and 2 groups of wind pavilions.3 entrances are arranged in station southern side；No. 1 wind pavilion is located at the ejection of station one end, No. 2 wind
The side of the other end AT STATION is arranged in pavilion, is hung on station main body outside；No. 1 safety exit is located at station side.
Station structure construction procedure：Station main body is two layers of twin columns three across box structure, using upward by substrate along the practice
Structure construction is carried out, when construction follows the construction principle of " vertical layered, longitudinal divisions, from bottom to up ", and laterally every layer of entirety is applied
Make, is vertically applied from bottom to top since bottom plate.According to site condition and excavation situation, first work car station owner body
Structure, secondly accessory structure, wherein station main structure is first constructed an end well, secondly another end well, and finally construction is intermediate
Standard paragraphs.Wherein station main structure construction is constructed by the attractive joint piecemeal of design drawing.The sequence of construction of every construction section：Pad
Layer construction → bottom plate, floor beams construction → station layer column construction → station layer side wall, middle plate, middle plate-beam construction → station hall layer are vertical
Column construction → station hall layer side wall, top plate, top plate-beam construction → sundry item construction.
The construction technology process of open-cut station main structure is：Preparation of construction → clear bottom, grounded screen, bed course, inverted filter →
Slab Waterproof Construction → base plate steel bar binding → bottom slab concreting concrete curing → bottom plate side wall waterproof construction → bottom column, wall, middle plate
Reinforcing bar → bottom column, wall, middle plate formwork erection → bottom column, wall, middle plate pour concrete → upper layer side wall waterproof construction → upper strata post, wall, top
Slab muscle → upper strata post, wall, top plate formwork erection → upper strata post, wall, top plate pour concrete → waterproof roofing → foundation pit backfill.
As a further solution of the present invention, the grounded screen is made of horizontal grounding objects, Grounding Grids and through connecing
Ground lead-out wire is drawn.The depth of burying under bottom cushion is 0.6m to grounded screen AT STATION, and the entire grounded screen in station is arranged 70 and hangs down
Directly body.
As a further solution of the present invention, the bed course uses C15 concrete, and gutter, sump are excavated in hole,
Drain substrate ponding；When it is larger to cheat bottom infiltration, and having certain artesian water, then back cover coagulation is poured after taking the measure of drainage pressure-reducing
Soil.Blinding concrete, which has been constructed, must assure that its surface is smooth, clean, dry.
As a further solution of the present invention, the bottom plate uses C40 water-tight concrete, and base plate of foundation pit length is longer, is
The generation of the shrinkage joint of concrete is reduced, each pouring length is not more than 24m, and the match ratio of concrete is adjusted by science,
Multifunctional expanded type waterproofing agent is added to reach to concrete because the thermogenetic temperature difference contraction of aquation compensates, effectively with flyash
The heat of hydration of concrete is reduced, while being aided with effective casting and maintenance process, so that the temperature difference for reaching control concrete is shunk
The effect in crack.
As a further solution of the present invention, the column uses C50, C30 concrete, and column is the template of frame column using thick
18mm wood glue plate, support is using " well " cabinet frame and positioning diagonal brace；When column is constructed, at the out-of-flatness of suspension column side, using manually cutting
Concrete is loosened, when column mould is fixed, following control line should be directed at, upper guy carries out horizontal vertical correction；To same organ timbering template
The correction of both ends column template should first be filled to fix, draw elongated line, the intermediate each column template of correction.
As a further solution of the present invention, the side wall uses C40 water-tight concrete, since station main structure is tight
Paste building enclosure, can not using to drawing support system, side wall template using it is self-contained it is whole tear construction method open, side wall template is steel framework bamboo
Plywood form, three diagonal brace support systems.
As a further solution of the present invention, wall, plate chamfering formwork and bottom, top beam template are all made of channel steel frame and add bamboo
Plywood panel is made into typified form, can shorten the formwork time in this way, improves template utilization rate.Since chamfer height is little, utilize
The pull rod fixed form being welded in the assembling reinforcement of wall, plate；Bottom, top beam penetrate stringer, fixed form using Screw arbor with nut at both-ends.
A kind of construction method of open-cut station main structure, specifically includes following steps：
Step 1: smooth location, sets dewatering well and carries out precipitation, apply drainage of foundation pit measure, apply cast-in-situ bored pile；
Step 2: excavation of foundation pit applies stake top crown beam, and set up first of steel branch to the lower 0.7m depth of first of support
Support；
Step 3: continuing to be excavated to foundation pit bottom downwards, second, the support of third road are successively set up, waist rail is placed in time, tests
Hole foot mat, laying floor waterproof layer and waterproof protective layer are applied after slot in time；
Step 4: pouring underplate concrete structure, side wall waterproof layer is applied, pours part side wall；
It is supportted Step 5: applying, removes third road bracing members, poured in the remaining sidewall structure in two layers of underground and basement one
Hardened structure；
Step 6: remove second bracing members, pour basement one side wall and top board structure, apply waterproof roofing layer and and
When backfill, be backfilled at first of bracing members position, soil layer compacting after remove first of bracing members and fall support, be backfilled to ground
Face applies platform slab structure and other internal components.
In conclusion the present invention has the advantages that compared with prior art：
Proposed by the invention a kind of open-cut station main structure and its construction method, working procedure match subway open cut vehicle
Routine of standing engineering method, the easy flexible, strong operability of working procedure, shortens the construction period.Meanwhile more conventional subway open cut vehicle
Stand, comprehensive protection system mainly add waterproof layer, apply cast-in-situ bored pile, the first, second and third bracing members, bottom plate, side wall and
Support improves the structural strength of its construction, both ensure that the overall stability of main structure body, and it is hidden to have also been removed institute in work progress
The security risk of hiding, water-proofing treatment is simpler easy, and the construction of bottom plate strengthens the stability of wall column.Station main body is using bright
Digging method construction, construction is simple, quick, economic, safety, has added bracing members between wall, can more preferably guarantee that wall column structure and stratum are horizontal
To stability, construction application will bring huge economic benefit, social benefit and environmental benefit.
In order to explain the structural features and functions of the invention more clearly, come with reference to the accompanying drawing with specific embodiment to this hair
It is bright to be described in detail.
Detailed description of the invention
Fig. 1 is station main structure schematic cross section of the invention.
Fig. 2 is the construction schematic diagram of cast-in-situ bored pile in the present invention.
Fig. 3 is the erection schematic diagram of first of bracing members in the present invention.
Fig. 4 is the erection schematic diagram of second and third road bracing members in the present invention.
Fig. 5 is the construction schematic diagram that underplate concrete structure is poured in the present invention.
Fig. 6 is to perform the structural schematic diagram supportted in the present invention.
Fig. 7 is the construction schematic diagram that ground is backfilled in the present invention.
Fig. 8 is station structure construction flow chart in the present invention.
Specific embodiment
The following further describes the technical solution of the present invention in the following with reference to the drawings and specific embodiments.
Referring to Fig. 1, a kind of open-cut station main structure, station main body is two layers of twin columns three across box structure, and station is set altogether
Set 3 entrances, 1 safety exit and 2 groups of wind pavilions.3 entrances are arranged in station southern side；No. 1 wind pavilion is located at station one end
Ejection, No. 2 wind pavilions are arranged the side of the other end AT STATION, are hung on station main body outside；No. 1 safety exit is located at station side.
With station overall length 285.75m, effective platform center right BK5+453.000 of mileage, rail at the effective platform center in station
For the elevation 27.970m of face：Station is the double-deck three standdle carrier stations of open cut, and effective wide 12m of platform, the wide 21.1m of construction standard section are high
15.08m, top plate earth-covering 4.0m at the effective platform center mileage in station.Station both ends are shield method section, and station both ends are equal
Shield launching condition is provided.
Station structure construction procedure：Station main body is two layers of twin columns three across box structure, using upward by substrate along the practice
Structure construction is carried out, when construction follows the construction principle of " vertical layered, longitudinal divisions, from bottom to up ", and laterally every layer of entirety is applied
Make, is vertically applied from bottom to top since bottom plate.According to site condition and excavation situation, first work car station owner body
Structure, secondly accessory structure, wherein station main structure is first constructed an end well, secondly another end well, and finally construction is intermediate
Standard paragraphs.Wherein station main structure construction is constructed by the attractive joint piecemeal of design drawing.The sequence of construction of every construction section：Pad
Layer construction → bottom plate, floor beams construction → station layer column construction → station layer side wall, middle plate, middle plate-beam construction → station hall layer are vertical
Column construction → station hall layer side wall, top plate, top plate-beam construction → sundry item construction.
Shown in Figure 8, the construction technology process of open-cut station main structure is：Preparation of construction → clear bottom, grounded screen, pad
Layer, inverted filter → Slab Waterproof Construction → base plate steel bar binding → bottom slab concreting concrete curing → bottom plate side wall waterproof construction → bottom
Column, wall, middle slab muscle → bottom column, wall, middle plate formwork erection → bottom column, wall, middle plate pour concrete → upper layer side wall waterproof construction → on
Layer column, wall, roof steel bar → upper strata post, wall, top plate formwork erection → upper strata post, wall, top plate pour concrete → waterproof roofing → foundation pit backfill.
In the present embodiment, the grounded screen is made of horizontal grounding objects, Grounding Grids and grounded lead-out wire draws
Out.The depth of burying under bottom cushion is 0.6m to grounded screen AT STATION, and 70 Grounding Grids are arranged in the entire grounded screen in station.
In the present embodiment, the bed course uses C15 concrete, and gutter, sump are excavated in hole, drains substrate product
Water；When it is larger to cheat bottom infiltration, and having certain artesian water, then bottom concrete is poured after taking the measure of drainage pressure-reducing.Bed course is mixed
Solidifying soil, which has been constructed, must assure that its surface is smooth, clean, dry.
Example in this embodiment, shown bottom plate use C40 water-tight concrete, and base plate of foundation pit length is longer, to reduce concrete
Shrinkage joint generation, each pouring length be not more than 24m, and by science adjust concrete match ratio, add it is multi-functional
Expansive waterproof agent reaches to concrete with flyash because the thermogenetic temperature difference contraction of aquation compensates, and concrete is effectively reduced
The heat of hydration, while being aided with effective casting and maintenance process, to achieve the effect that the shrinkage crack by difference in temperature for controlling concrete.
In the present embodiment, the column uses C50, C30 concrete, and column is that the template of frame column uses thickness 18mm wood glue
Plate, support is using " well " cabinet frame and positioning diagonal brace；When column is constructed, at the out-of-flatness of suspension column side, loosening coagulation is cut using artificial
Soil when column mould is fixed, should be directed at following control line, and upper guy carries out horizontal vertical correction；Two should first be filled to same organ timbering template
The correction of newel post's template is fixed, and elongated line, the intermediate each column template of correction are drawn.
In the present embodiment, the side wall uses C40 water-tight concrete, since station main structure is to be close to go along with sb. to guard him knot
Structure, can not using to drawing support system, side wall template using it is self-contained it is whole tear construction method open, side wall template is steel framework bamboo plywood mould
Plate, three diagonal brace support systems.
In the present embodiment, wall, plate chamfering formwork and bottom, top beam template are all made of channel steel frame bamboo composite plate panel are added to do
At typified form, the formwork time can be shortened in this way, improve template utilization rate.Since chamfer height is little, using being welded on wall, plate
Pull rod fixed form in assembling reinforcement；Bottom, top beam penetrate stringer, fixed form using Screw arbor with nut at both-ends.
Referring to fig. 2 shown in -7, a kind of construction method of open-cut station main structure specifically includes following steps：
Step 1: smooth location, sets dewatering well and carries out precipitation, apply drainage of foundation pit measure, apply cast-in-situ bored pile；
Step 2: excavation of foundation pit applies stake top crown beam, and set up first of steel branch to the lower 0.7m depth of first of support
Support；
Step 3: continuing to be excavated to foundation pit bottom downwards, second, the support of third road are successively set up, waist rail is placed in time, tests
Hole foot mat, laying floor waterproof layer and waterproof protective layer are applied after slot in time；
Step 4: pouring underplate concrete structure, side wall waterproof layer is applied, pours part side wall；
It is supportted Step 5: applying, removes third road bracing members, poured in the remaining sidewall structure in two layers of underground and basement one
Hardened structure；
Step 6: remove second bracing members, pour basement one side wall and top board structure, apply waterproof roofing layer and and
When backfill, be backfilled at first of bracing members position, soil layer compacting after remove first of bracing members and fall support, be backfilled to ground
Face applies platform slab structure and other internal components.
The technical principle of the invention is described above in combination with a specific embodiment, is only the preferred embodiment of the present invention.This
The protection scope of invention is not limited merely to above-described embodiment, and all technical solutions belonged under thinking of the present invention belong to the present invention
Protection scope.Those skilled in the art, which does not need to pay for creative labor, can associate other specific realities of the invention
Mode is applied, these modes will fall within the scope of protection of the present invention.
Claims (8)
1. a kind of open-cut station main structure, which is characterized in that the station main body is two layers of twin columns three across box structure, vehicle
Station owner's body is used carries out structure construction by substrate along the practice upwards, and when construction follows " vertical layered, longitudinal divisions, from bottom to up "
Construction principle, laterally every layer of entirety apply, vertically applied from bottom to top since bottom plate.
2. a kind of open-cut station main structure according to claim 1, which is characterized in that 3 are arranged altogether and goes out for the station
Entrance, 1 safety exit and 2 groups of wind pavilions；3 entrances are arranged in station southern side；No. 1 wind pavilion is located at station one end and ejects, and No. 2
The side of the other end AT STATION is arranged in wind pavilion, is hung on station main body outside；No. 1 safety exit is located at station side.
3. a kind of open-cut station main structure according to claim 1 or 2, which is characterized in that the open-cut station main body
The construction technology process of structure is：Preparation of construction；Clear bottom, grounded screen, bed course, inverted filter；Slab Waterproof Construction；Baseplate reinforcing bar is tied up
It pricks；Bottom slab concreting concrete curing；Bottom plate side wall waterproof construction；Bottom column, wall, middle slab muscle；Bottom column, wall, middle plate formwork erection；Bottom
Column, wall, middle plate pour concrete；Upper layer side wall waterproof construction；Upper strata post, wall, roof steel bar；Upper strata post, wall, top plate formwork erection；Upper strata post,
Wall, top plate pour concrete；Waterproof roofing；Foundation pit backfill.
4. a kind of open-cut station main structure according to claim 3, which is characterized in that the grounded screen is connect by level
Ground body, Grounding Grids are constituted and grounded lead-out wire is drawn, and the depth of burying under bottom cushion is 0.6m to grounded screen AT STATION,
70 Grounding Grids are arranged in the entire grounded screen in station.
5. a kind of open-cut station main structure according to claim 3, which is characterized in that the bed course is C15 concrete,
Gutter, sump are excavated in hole, drain substrate ponding.
6. a kind of open-cut station main structure according to claim 3, which is characterized in that the bottom plate is impervious using C40
Concrete, each pouring length are not more than 24m.
7. a kind of open-cut station main structure according to claim 3, which is characterized in that the column is mixed using C50, C30
Solidifying soil, column are that the template of frame column uses thickness 18mm wood glue plate, and support is using " well " cabinet frame and positioning diagonal brace；To same organ timbering template
First the correction of dress both ends column template is fixed, and draws elongated line, the intermediate each column template of correction.
8. a kind of open-cut station main structure according to claim 3, which is characterized in that the side wall is impervious using C40
Concrete, since station main structure is to be close to building enclosure, side wall template is steel framework bamboo plywood form, the support of three diagonal braces
System.
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| CN201810931409.3A CN108914966A (en) | 2018-08-15 | 2018-08-15 | A kind of open-cut station main structure and its construction method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403981A (en) * | 2018-12-07 | 2019-03-01 | 石家庄铁源工程咨询有限公司 | The construction technology of subway shield shaft main structure |
| CN109594564A (en) * | 2019-01-22 | 2019-04-09 | 中铁建大桥工程局集团第五工程有限公司 | A kind of anti-collapse construction method of Metro Deep Excavation open cut |
| CN109736354A (en) * | 2018-12-30 | 2019-05-10 | 中铁十四局集团有限公司 | Tunnel open excavation section main structure construction method |
| CN110306593A (en) * | 2019-07-03 | 2019-10-08 | 中铁二十五局集团第五工程有限公司 | A kind of station construction method |
| CN110397079A (en) * | 2019-07-06 | 2019-11-01 | 中铁二十五局集团第五工程有限公司 | Marine facies rich water karst strata open-cut station construction technology |
| CN110820756A (en) * | 2019-11-05 | 2020-02-21 | 中铁二十二局集团轨道工程有限公司 | Shield well and vertical shaft deep foundation pit excavation safety construction method |
| CN111074941A (en) * | 2019-12-31 | 2020-04-28 | 中车建设工程有限公司 | Large-span composite structural underground station and construction method thereof |
| CN112982438A (en) * | 2021-03-12 | 2021-06-18 | 中铁九局集团第六工程有限公司 | Construction method of anti-floating system |
| CN113136893A (en) * | 2021-04-24 | 2021-07-20 | 浙江兴业市政工程有限公司 | Unitized construction method of underground connecting channel |
| CN113668602A (en) * | 2021-07-31 | 2021-11-19 | 上海二十冶建设有限公司 | Pipe gallery construction method for overpassing subway channel |
| CN114457846A (en) * | 2021-11-17 | 2022-05-10 | 中国水利水电第六工程局有限公司 | Road station main body structure construction method |
| CN114482127A (en) * | 2022-02-28 | 2022-05-13 | 中铁十一局集团有限公司 | Integrated construction method for main structure board, wall and column of subway open cut station |
| CN114541409A (en) * | 2022-01-22 | 2022-05-27 | 北京市政路桥股份有限公司 | Support replacing method for integrated support structure of pipe gallery and tunnel foundation pit |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403981A (en) * | 2018-12-07 | 2019-03-01 | 石家庄铁源工程咨询有限公司 | The construction technology of subway shield shaft main structure |
| CN109736354A (en) * | 2018-12-30 | 2019-05-10 | 中铁十四局集团有限公司 | Tunnel open excavation section main structure construction method |
| CN109594564A (en) * | 2019-01-22 | 2019-04-09 | 中铁建大桥工程局集团第五工程有限公司 | A kind of anti-collapse construction method of Metro Deep Excavation open cut |
| CN110306593A (en) * | 2019-07-03 | 2019-10-08 | 中铁二十五局集团第五工程有限公司 | A kind of station construction method |
| CN110397079B (en) * | 2019-07-06 | 2021-12-17 | 中铁二十五局集团第五工程有限公司 | Construction process for open cut station of marine facies water-rich karst stratum |
| CN110397079A (en) * | 2019-07-06 | 2019-11-01 | 中铁二十五局集团第五工程有限公司 | Marine facies rich water karst strata open-cut station construction technology |
| CN110820756A (en) * | 2019-11-05 | 2020-02-21 | 中铁二十二局集团轨道工程有限公司 | Shield well and vertical shaft deep foundation pit excavation safety construction method |
| CN111074941A (en) * | 2019-12-31 | 2020-04-28 | 中车建设工程有限公司 | Large-span composite structural underground station and construction method thereof |
| CN112982438A (en) * | 2021-03-12 | 2021-06-18 | 中铁九局集团第六工程有限公司 | Construction method of anti-floating system |
| CN113136893A (en) * | 2021-04-24 | 2021-07-20 | 浙江兴业市政工程有限公司 | Unitized construction method of underground connecting channel |
| CN113136893B (en) * | 2021-04-24 | 2022-06-17 | 浙江兴业市政工程有限公司 | Unitized construction method of underground connecting channel |
| CN113668602A (en) * | 2021-07-31 | 2021-11-19 | 上海二十冶建设有限公司 | Pipe gallery construction method for overpassing subway channel |
| CN114457846A (en) * | 2021-11-17 | 2022-05-10 | 中国水利水电第六工程局有限公司 | Road station main body structure construction method |
| CN114541409A (en) * | 2022-01-22 | 2022-05-27 | 北京市政路桥股份有限公司 | Support replacing method for integrated support structure of pipe gallery and tunnel foundation pit |
| CN114482127A (en) * | 2022-02-28 | 2022-05-13 | 中铁十一局集团有限公司 | Integrated construction method for main structure board, wall and column of subway open cut station |
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