CN105240028A - Design method of subway station by adopting undercutting method in soft soil area - Google Patents
Design method of subway station by adopting undercutting method in soft soil area Download PDFInfo
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- CN105240028A CN105240028A CN201510797092.5A CN201510797092A CN105240028A CN 105240028 A CN105240028 A CN 105240028A CN 201510797092 A CN201510797092 A CN 201510797092A CN 105240028 A CN105240028 A CN 105240028A
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Abstract
The invention discloses a design method of a subway station by adopting an undercutting method in a soft soil area. The main technical measure comprises the following aspects: (1) a general arrangement scheme, namely, designing a middle fracture surface form of a middle adjustment station aiming at an underground three-layer station including a station hall layer 1, an equipment layer 2 and a platform layer 3, and passing through by adopting middle cross-road section underground excavation; (2) determination of length of an underground excavation segment; (3) arrangement of cross section of the underground excavation segment; (4) communication of platforms on the left and right lines; and (5) an implementation method of the underground excavation segment. The design method achieves construction of an underground station by adopting an undercutting method in a soft soil area layer, can achieve smooth joint of platforms of an open excavation segment and the underground excavation segment, can meet the station use functions, is convenient for passengers to select travelling directions, is convenient in construction, does not need change of municipal pipelines and can meet the requirements of traffic.
Description
Technical field
The present invention relates to underground structure technical field, be specifically related to a kind of soft clay area hidden construction process metno station design method.
Background technology
Along with urban track traffic is in each metropolitan fast development, has the intensive construction in increasing subway station in inner city, and be often arranged at below the turnpike road of city.Metro station construction ubiquity construction plant, inner city is limited, periphery building are intensive, the site features such as the magnitude of traffic flow is large on the ground, underground utilities gather.Therefore in inner city, adopt traditional cut and cover tunneling, a large amount of dynamic removal engineerings can be brought, a large amount of municipal pipelines repeatedly moves and a large amount of traffic is led to change and even broken off a friendship.These difficulties bring inconvenience to resident living, and considerably increase engineering construction input, also bring obstruction to the propelling that engineering construction is implemented.
At lithostratigraphy or sand-pebble layer, subway practitioner, according to formation characteristics, is combined in the construction that shallow burial hidden digging that this stratum generally adopts carries out underground station, achieves larger benefit.Soft clay area is due to its special formation characteristics, build underground station to hidden construction process in soft soil layer and bring many difficulties: one is that need to meet the tunneling section of station using function large, in soft soil layer, hidden construction process is built so large section and be there is no successfully precedent, can use for reference from the equal rawness such as equipment, construction method; Two is traditional Dryopteris sublaetaChing et Hsu engineering methods, such as pipe shed method etc., although technical maturity, in the inner city construction that building are intensive, Deformation control ability is poor, cannot meet the environmental Kuznets Curves requirement day by day improved.
Therefore, those skilled in the art is devoted to develop a kind of soft clay area hidden construction process metno station design method, overcomes above difficulty.
Summary of the invention
Because the above-mentioned defect of prior art, the invention provides a kind of soft clay area hidden construction process metno station design method.
For achieving the above object, the present invention takes following technical scheme to realize:
A kind of soft clay area hidden construction process metno station design method, described metno station design method is applied in the F3/B3 station comprising station hall layer, mechanical floor, station layer, sectional form in the middle part of adjustment station, is adopted middle part to pass through across section tunneling, is communicated with by tunneling section.
Further, described station layer adopts divisional island type platform, and described station hall layer is communicated with by tunneling section.
Further, the determination of described tunneling segment length is according in applicable fire specification, and public area platform must ensure that in 50m, personnel arrive the requirement of evacuating building staircase.
Further, the determination of described tunneling segment length, between Shi Yiliang building staircase, the spacing 100m limit is as design considerations, the required distance of 8m clear in deduction staircase operating point, and shield structure well side wall thicknesses and outsourcing well weld width carry out choosing.
Further, described tunneling section is divided into left and right two tunneling sections.
Further, the section of described tunneling section adopts class rectangular cross section.
Further, the section width of described tunneling section meets the requirement of vehicle arrangement gauge, side platform width and pipelining width, and considers certain construction error, determines section width with this.
Further, the profile height of described tunneling section, mainly from structure stress angle, adopts the sectional form of top, bottom arch camber, determines optimal section, and determine profile height in conjunction with top airduct arrangement space by the optimization of rise ratio, the ratio of width to height.
Further, along Station longitudinally to arrange the mode of service channel, play the effect that left and right line platform is linked up.
Further, described soft clay area hidden construction process main structure of subway station is divided into open excavation section and tunneling section, the enforcement order at whole station is: two ends open excavation section of first constructing, after structure built by opencut method completes, implement station layer, station hall layer tunneling section respectively, implement the joint of station hall layer tunneling section and open excavation section again, finally complete that secondary structure in station is built, equipment is installed, Decorating Project.
Beneficial effect of the present invention: hidden construction process of the present invention builds subway station, achieve hidden construction process in soft soil layer and build underground station, open excavation section, the smooth and easy linking of tunneling section platform can be made, meet station using function, passenger is facilitated to select line direction, and easy construction, do not change and move municipal pipeline and turn over the requirement of handing over traffic, avoid the important town road of impact and pipeline.
Be described further below with reference to the technique effect of accompanying drawing to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is station rough package drawing.
Fig. 2 is station tunneling segment length generalized section.
Fig. 3 is station tunneling segment length floor map.
Fig. 4 is tunneling section schematic cross-sectional view.
Fig. 5 is that schematic diagram linked up by tunneling section left and right line platform.
Fig. 6 is that Station implements reserved schematic diagram on structure built by opencut method.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Soft clay area of the present invention hidden construction process metno station design method technical measures comprises following aspect:
(1) General Arrangement Scheme
As depicted in figs. 1 and 2, for the F3/B3 station comprising station hall layer 1, mechanical floor 2, station layer 3, in design, adjust sectional form in the middle part of station, adopt middle part to pass through across section tunneling.
Station platform layer 3 adopts divisional island type platform 4, and station hall layer 1 is communicated with by tunneling section 5.This arrangement can make open excavation section 6, the smooth and easy linking of tunneling section 5 platform, facilitates passenger to select line direction.Tunneling section 5 can the passenger flow of effective communication two open excavation section 6, and uses according to non-payment district passage, plays the effect of social underpass.
(2) tunneling segment length is determined
As shown in Figure 2, tunneling section 5 length is taken as about 80m.The determination of tunneling segment length is according to applicable fire specification, and public area platform must ensure that in 50m, personnel arrive the requirement of evacuating building staircase.Between Gu Yiliang building staircase, the spacing 100m limit is as design considerations, the required distance of 8m clear in deduction staircase operating point, and shield structure well side wall thicknesses and outsourcing well weld width (being estimated as 2m), draw the tunneling segment length of 100-(8+2) × 2=80m.
As shown in Figure 3, according to the tunneling segment length of 80m, usually can under the condition meeting conventional municipal boundary lines of roads 7 width, do not change and move the requirement that friendship is turned in municipal pipeline 8 and traffic, and the enforcement distance that the end soil body of one fixed width is reinforced can be ensured.
(3) tunneling section optimal crosssection
Tunneling segment structure, as a part for station, station body, need meet station using function, and mates with two ends open excavation section platform, distance between centers of tracks etc.Consider the feasibility that hidden construction process is implemented, tunneling section adopts the platform style of separate type, and structure is divided into left and right two tunneling sections.
As shown in Figure 4, according to the feature of Station, tunneling section adopts class rectangular cross section, and tunneling section width need meet the requirement of vehicle arrangement gauge 9, side platform width and pipelining width 10, and considers certain construction error, determines section width with this.Tunneling profile height, mainly from structure stress angle, adopts the sectional form of top, bottom arch camber, determines optimal section, and determine profile height in conjunction with top airduct arrangement space by the optimization of rise ratio, the ratio of width to height.
(4) left and right line platform is linked up
As shown in Figure 5, along Station longitudinally to arrange the mode of service channel 11, play the effect that left and right line platform is linked up.The effect that platform is linked up, one is facilitate passenger in tunneling section passage, select different direction by bus, improves service level, and two is passenger flows of the position that solution part may be blocked up, can rapid evacuation in another passage.Because tunneling section end is provided with building staircase, press the experience of passenger flow analysing in the past, passenger flow may be there is and concentrate in end, and consider that tunneling segment length is about 80m, therefore service channel is everywhere set in tunneling section, a service channel is respectively set respectively at tunneling section tip position, and middle part arranges a pair service channel.
(5) Station implementation method
Station agent structure is divided into open excavation section 12 and tunneling section 13, the enforcement order at whole station is: two ends open excavation section 12 of first constructing, after structure built by opencut method completes, implement station layer 3, station hall layer tunneling section 5 respectively, implement station hall layer tunneling section 5 and the joint of open excavation section 12 again, finally complete the engineerings such as secondary structure in station is built, equipment installation, decorations.
When tunneling section is implemented, place can utilize the construction plant of two ends open excavation section, as places such as material stockyard, constructing operation, to alleviate inner city site condition difficulty.As shown in Figure 6, when tunneling section 13 is implemented, hole for hoist, unearthed hole 14 are set in open excavation section 12 tip position, to meet the transport of equipment when tunneling section is constructed, material.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technician in the art, all should by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (10)
1. a soft clay area hidden construction process metno station design method, it is characterized in that: described metno station design method is applied in the F3/B3 station comprising station hall layer, mechanical floor, station layer, in described metno station design method, sectional form in the middle part of adjustment station, adopt middle part to pass through across section tunneling, be namely communicated with by tunneling section.
2. soft clay area according to claim 1 hidden construction process metno station design method, is characterized in that: described station layer adopts divisional island type platform, and described station hall layer is communicated with by tunneling section.
3. soft clay area according to claim 2 hidden construction process metno station design method, it is characterized in that: the determination of described tunneling segment length is according in applicable fire specification, public area platform must ensure that personnel in 50m arrive that the requirement of evacuating building staircase carries out determining.
4. soft clay area according to claim 3 hidden construction process metno station design method, it is characterized in that: the determination of described tunneling segment length, between Shi Yiliang building staircase, the spacing 100m limit is as design considerations, the required distance of 8m clear in deduction staircase operating point, and shield structure well side wall thicknesses and outsourcing well weld width carry out choosing.
5. the soft clay area hidden construction process metno station design method according to any one of Claims 1-4, is characterized in that: described tunneling section is divided into left and right two tunneling sections.
6. soft clay area according to claim 5 hidden construction process metno station design method, is characterized in that: the section of described tunneling section adopts class rectangular cross section.
7. soft clay area according to claim 6 hidden construction process metno station design method, it is characterized in that: the section width of described tunneling section meets the requirement of vehicle arrangement gauge, side platform width and pipelining width, and consider certain construction error, determine section width with this.
8. soft clay area according to claim 7 hidden construction process metno station design method, it is characterized in that: the profile height of described tunneling section is mainly from structure stress angle, adopt the sectional form of top, bottom arch camber, determine optimal section by the optimization of rise ratio, the ratio of width to height, and determine profile height in conjunction with top airduct arrangement space.
9. soft clay area according to claim 8 hidden construction process metno station design method, is characterized in that: along Station longitudinally to arrange the mode of service channel, plays the effect that left and right line platform is linked up.
10. soft clay area according to claim 9 hidden construction process metno station design method, it is characterized in that: described soft clay area hidden construction process main structure of subway station is divided into open excavation section and tunneling section, the enforcement order at whole station is: two ends open excavation section of first constructing, after open excavation section completes, implement station layer, station hall layer tunneling section respectively, implement the joint of station hall layer tunneling section and open excavation section again, finally complete that secondary structure in station is built, equipment is installed, Decorating Project.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106930318A (en) * | 2017-03-27 | 2017-07-07 | 中铁隧道勘测设计院有限公司 | A kind of buried Room platform channel design in interface water condition subway station and its construction method |
| CN107178370A (en) * | 2017-07-11 | 2017-09-19 | 上海市城市建设设计研究总院（集团）有限公司 | It is not take up the method for construction of constructing road subway station weak soil |
| CN107559020A (en) * | 2017-08-18 | 2018-01-09 | 中铁隧道勘测设计院有限公司 | A kind of separate type tunneling bilayer subway station |
| CN107630707A (en) * | 2017-10-26 | 2018-01-26 | 上海市隧道工程轨道交通设计研究院 | A kind of single arch Station section arrangement and its application process |
| CN107989621A (en) * | 2018-01-09 | 2018-05-04 | 上海隧道工程有限公司 | The construction method of subway station is constructed in rock tunnel(ling) machine tunneling |
| CN108454634A (en) * | 2018-04-12 | 2018-08-28 | 佛山轨道交通设计研究院有限公司 | A kind of superimposing thread subway station |
| CN112302680A (en) * | 2020-10-30 | 2021-02-02 | 中铁第六勘察设计院集团有限公司 | Comprehensive construction method for reverse excavation and support for safe and rapid construction of channel structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930318A (en) * | 2017-03-27 | 2017-07-07 | 中铁隧道勘测设计院有限公司 | A kind of buried Room platform channel design in interface water condition subway station and its construction method |
| CN107178370A (en) * | 2017-07-11 | 2017-09-19 | 上海市城市建设设计研究总院（集团）有限公司 | It is not take up the method for construction of constructing road subway station weak soil |
| CN107559020A (en) * | 2017-08-18 | 2018-01-09 | 中铁隧道勘测设计院有限公司 | A kind of separate type tunneling bilayer subway station |
| CN107630707A (en) * | 2017-10-26 | 2018-01-26 | 上海市隧道工程轨道交通设计研究院 | A kind of single arch Station section arrangement and its application process |
| CN107989621A (en) * | 2018-01-09 | 2018-05-04 | 上海隧道工程有限公司 | The construction method of subway station is constructed in rock tunnel(ling) machine tunneling |
| CN108454634A (en) * | 2018-04-12 | 2018-08-28 | 佛山轨道交通设计研究院有限公司 | A kind of superimposing thread subway station |
| CN112302680A (en) * | 2020-10-30 | 2021-02-02 | 中铁第六勘察设计院集团有限公司 | Comprehensive construction method for reverse excavation and support for safe and rapid construction of channel structure |
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