CN107816354A - Subway station gateway backward is instead dug and chooses high construction method with multi-step - Google Patents

Subway station gateway backward is instead dug and chooses high construction method with multi-step Download PDF

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Publication number
CN107816354A
CN107816354A CN201710849880.3A CN201710849880A CN107816354A CN 107816354 A CN107816354 A CN 107816354A CN 201710849880 A CN201710849880 A CN 201710849880A CN 107816354 A CN107816354 A CN 107816354A
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CN
China
Prior art keywords
construction
backward
chooses
cavern
dug
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Granted
Application number
CN201710849880.3A
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Chinese (zh)
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CN107816354B (en
Inventor
刘尧庆
张文军
张广涛
甘玉林
史洪涛
秦俭
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CHINA REILWAY CONSTRUCTION BRIDGE ENGINEERING BUREAU GROUP NO.6 ENGINEERING CO., LTD.
Original Assignee
First Engineering Co Ltd of China Railway Construction Bridge Engineering Bureau Group Co Ltd
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Application filed by First Engineering Co Ltd of China Railway Construction Bridge Engineering Bureau Group Co Ltd filed Critical First Engineering Co Ltd of China Railway Construction Bridge Engineering Bureau Group Co Ltd
Priority to CN201710849880.3A priority Critical patent/CN107816354B/en
Publication of CN107816354A publication Critical patent/CN107816354A/en
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Publication of CN107816354B publication Critical patent/CN107816354B/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/10Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/10Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
    • E21D11/107Reinforcing elements therefor; Holders for the reinforcing elements
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14Lining predominantly with metal
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/14Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings

Abstract

The present invention discloses a kind of subway station gateway backward, and anti-digging chooses high construction method with multi-step, this method is creative to change into traditional mode constructed by ground to ground end by the mode of ground end to ground, it is after the accumulation of long-term construction experience, the scheme obtained after testing and optimizing repeatedly, it can thoroughly solve the defects of conventional construction method, by actively creating execution conditions, high construction will be chosen since the inside of station with multi-step to the anti-digging of earth's surface backward to be combined, the construction method can reduce ground demolition work amount, ensure surface buildingses not by construction infection to greatest extent, solve construction to disturb residents, ensure that engineering and design idea can smoothly be implemented.

Description

Subway station gateway backward is instead dug and chooses high construction method with multi-step
Technical field
The present invention relates to urban track traffic construction field, particularly a kind of subway station gateway backward is instead dug and more Rank chooses high construction method.
Background technology
With the fast development of urban track traffic and the increasingly restriction of the surface transportation system of congestion, in complicated city It is widely used by domestic and international city that subway is built in city's environment.But taken over the land for use or perplexed the problems such as moving, many subway stations Gateway can not be carried out, therefore can only construct as used traditional open cutting construction method according to preliminary project Continuous change entrance in journey, construct in design, or the reserved later stage selects a good opportunity construction, or even clear-cut cancels partly discrepancy Mouthful, to construction safety, the duration ensures, later stage operation and resident trip bring great inconvenience.Therefore need one kind can now Solution to the problems described above.
The content of the invention
The present invention is to solve the above-mentioned deficiency present in prior art, proposes that one kind can reduce ground demolition work Amount, ensure that surface buildingses by construction infection, do not solve construction and disturbed residents to greatest extent, ensure the subway station that engineering is smoothly implemented Gateway backward is instead dug and chooses high construction method with multi-step.
The present invention technical solution be:A kind of subway station gateway backward is instead dug and chooses high construction party with multi-step Method, it is characterised in that:Described method follows the steps below:
Plate Second Lining Construction finishes and after concrete strength reaches design requirement in main body AT STATION, pre- by station hall layer gateway Hole of boxing out enters tunneling section, carries out tunneling section construction, the tunneling section construction is divided into preformed hole construction, right angle turn construction With backward it is counter dig climbing section construct three sections.
Described right angle turn work progress is as follows:Right angle turn top bar is after up to turning is chosen before turning into hole The outer 300mm of the first branch size of cavern's design section, excavate the wide interim pilot tunnels of 3m and enter cavern after turning, sprayed using I-steel linked network Concrete construction, cavern's preliminary bracing after being turned by design section size is excavated to after design width, preliminary bracing reaches After design strength, the wide interim pilot tunnel side wall I-steel of 3m and gunite concrete structure, cavern after being turned by original design are removed Excavate.
Described cavern's preliminary bracing is using top bar vault side wall preliminary bracing in the range of 3m.
Described backward is counter, and to dig climbing section work progress as follows:30 ° of elevation angle construction from bottom to top, construct the high 7.2m of section, Using multi-step excavation method, point 4 steps are constructed, No. 1 step high 1.5-2m, No. 2, No. 3, No. 4 shoulder heights be In the range of 2m-2.5m, each length of bench is 2m, forms 4 bench excavations step sequence, often circulates first No. 1 step of construction, then successively Construction No. 2, No. 3, No. 4 steps, ensure that 4 steps are integral excavation supporting construction forward, the total excavation length control of 4 steps is in 5- In 6m.
The present invention compared with the existing technology, has the following advantages that:
The construction method of subway station gateway disclosed in this invention, it is creative to be constructed traditional by ground to ground end Mode is changed into by the mode of ground end to ground, and it is after the accumulation of long-term construction experience, is obtained after testing and optimizing repeatedly Scheme, it can thoroughly solve the defects of conventional construction method, by actively creating execution conditions, will be opened inside station Begin instead to dig to earth's surface backward and choose high construction with multi-step and be combined, the construction method can reduce ground demolition work amount, maximum Limit ensures that surface buildingses by construction infection, do not solve construction and disturbed residents, and ensures that engineering and design idea can smoothly be implemented.
Brief description of the drawings
Fig. 1 is the anti-step sequence figure for digging climbing section construction procedure of heretofore described backward.Wherein A be advanced tubule or Anchor pole, B are preliminary bracing, and C is to for cavern excavation direction.
Embodiment
Below in conjunction with embodiment of the invention is illustrated, as shown in Figure 1:A kind of subway station gateway is inverse Sequence is instead dug and chooses high construction method with multi-step, is followed the steps below:
Plate Second Lining Construction finishes and after concrete strength reaches design requirement in main body AT STATION, pre- by station hall layer gateway Hole of boxing out enters tunneling section, carries out tunneling section construction, the tunneling section construction is divided into preformed hole construction, right angle turn construction With backward it is counter dig climbing section construct three sections.
Wherein preformed hole construction can be directed to specific geological conditions, using traditional boring construction such as bench excavation, CRD Technology, therefore repeat no more;
Wherein right angle turn work progress is as follows:Right angle turn top bar is set cavern after up to turning is chosen before turning into hole The section outer 300mm of first branch size is counted, the wide interim pilot tunnels of 3m is excavated and enters cavern after turning, using I-steel m esh-hanging sprayed concrete Construction, be excavated to design width after turned by design section size after cavern's preliminary bracing(Top bar vault in the range of 3m Side wall preliminary bracing is constructed), after preliminary bracing reaches design strength, remove the wide interim pilot tunnel side wall I-steel of 3m and injection coagulation Soil structure, cavern excavation after being turned by original design.
Wherein backward it is counter dig climbing section work progress it is as follows:30 ° of elevation angle construction from bottom to top, construct the high 7.2m of section, adopts With multi-step excavation method, point 4 steps are constructed, No. 1 step high 1.5-2m, No. 2, No. 3, No. 4 shoulder heights be 2m- In the range of 2.5m, each length of bench is 2m, forms 4 bench excavations step sequence, often circulates first No. 1 step of construction, then apply successively Work 2, No. 3, No. 4 steps, ensure that 4 steps are integral excavation supporting construction forward, the total excavation length control of 4 steps is in 5-6m It is interior.
In construction method disclosed in this invention, strengthen geological prospecting, carry out advance support, preliminary bracing, it is ensured that Construction safety etc. is all most important, while the deslagging measure for controlling face is also particularly critical.
The parameter request of the ductule used in work progress is as follows:From the@300mm of φ 42 ductule, L=3m, extrapolation 10~15 ° of angle, two Pin grids set a ring.
The points for attention of ductule are:Because climbing section advance support construction space is limited, the elevation angle is big, such as 1 when setting Number step space section is unsatisfactory for setting space, using first being set with changing long drill pipe after short drill pipe pore-forming, it is ensured that sets depth Degree and hole position deviation are in design and specification allowed band.
Parameter request during grouting with small pipe is as follows:Dilation angle is 0.25m, and grouting serous fluid is high strength and no shrinting cement mortar Liquid, 0.5 ~ 1.0MPa of grouting pressure.
Grid, the parameter request of bar-mat reinforcement used is as follows:The 6@150X150 of cage bar grid@500mm, bar-mat reinforcement Φ of Ф 25, Lap of splice 150mm.Grid is divided into 6 sections, strengthens connecting plate installation quality.
From strength grade C25 jetting cement, construction of shotcrete strengthens quality control, surface smooth-going, and no projection subtracts Few stress concentration.
In first branch back-grouting, laid from cement mortar as backfill slip casting, injected hole along arch and abutment wall, between ring Away from 2m, abutment wall 3m, longitudinal pitch 3m, quincuncial arrangement, slip casting depth is first branch behind 0.5m, grouting pressure:0.3~ 0.5MPa。
It should be noted that cavern need to bury two layers of Grouting Pipe after flat segments right-angled bend, respectively at the beginning of outer layer I-steel Branch is just propped up with design section grillage, ensures that just branch structure and country rock are closely connected.
What face was slagged tap slags tap order on earth, to be slagged tap successively by top bar downward step, it is noted that No. 1 by height Step uses artificial deslagging because sectional space is narrow and small and position is higher, does dregs slide carriage with 4mm steel sheet and plates, makes No. 1 step Dregs can slip to No. 3 steps and carry out mechanical deslagging.Slide carriage ensures 40 ° of inclination angles, enables dregs natural downslide.Because of artificial progress of slagging tap Slowly to create favorable conditions as early as possible with mechanical tap to improve slag discharge efficiency.Mechanical work controls ramp angle on slope, works as slope angle Operation of slagging tap is carried out again after needing first construction operation platform during more than 30 °;No. 1 step drilling depth is 2m, unsuitable long, will between 4 steps Promote comprehensively.

Claims (4)

1. a kind of subway station gateway backward is instead dug and chooses high construction method with multi-step, it is characterised in that:Described method is pressed Carried out according to following steps:
Plate Second Lining Construction finishes and after concrete strength reaches design requirement in main body AT STATION, pre- by station hall layer gateway Hole of boxing out enters tunneling section, carries out tunneling section construction, the tunneling section construction is divided into preformed hole construction, right angle turn construction With backward it is counter dig climbing section construct three sections.
2. subway station gateway according to claim 1 backward is instead dug and chooses high construction method with multi-step, its feature exists In:Described right angle turn work progress is as follows:Right angle turn top bar cavern after up to turning is chosen before turning into hole The outer 300mm of the first branch size of design section, excavate the wide interim pilot tunnels of 3m and enter cavern after turning, coagulation is sprayed using I-steel linked network Soil application work, cavern's preliminary bracing after being turned by design section size is excavated to after design width, preliminary bracing reaches design After intensity, the wide interim pilot tunnel side wall I-steel of 3m and gunite concrete structure, cavern excavation after being turned by original design are removed.
3. subway station gateway according to claim 2 backward is instead dug and chooses high construction method with multi-step, its feature exists In:Described cavern's preliminary bracing is using top bar vault side wall preliminary bracing in the range of 3m.
4. subway station gateway according to claim 1 backward is instead dug and chooses high construction method with multi-step, its feature exists In:Described backward is counter, and to dig climbing section work progress as follows:30 ° of elevation angle construction from bottom to top, construct the high 7.2m of section, using more Bench excavation method, point 4 steps are constructed, No. 1 step high 1.5-2m, No. 2, No. 3, No. 4 shoulder heights be 2m-2.5m In the range of, each length of bench is 2m, forms 4 bench excavations step sequence, often circulates first No. 1 step of construction, then construct 2 successively Number, No. 3, No. 4 steps, ensure that 4 steps are integral excavation supporting construction forward, the control of 4 steps total excavation length is in 5-6m.
CN201710849880.3A 2017-09-20 2017-09-20 Subway station entrance backward, which is instead dug, chooses high construction method with multi-step Active CN107816354B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109372518A (en) * 2018-09-28 2019-02-22 北京交通大学 A kind of tunnel mutation anti-excavation construction technology of section

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101148987A (en) * 2007-11-01 2008-03-26 中铁隧道勘测设计院有限公司 Method for employing whole dark digging method to construct underground station transferring point
CN105003272A (en) * 2015-07-26 2015-10-28 北京工业大学 Reversed construction method for expanding and excavating stations on sectional shield tunnel foundations of subways
CN204941545U (en) * 2015-09-19 2016-01-06 中铁二十二局集团第一工程有限公司 Station boring construction system
CN205100989U (en) * 2015-10-10 2016-03-23 中铁隧道勘测设计院有限公司 Utilize oblique access structure of subway access & exit double as construction
CN106150506A (en) * 2016-07-08 2016-11-23 中铁十六局集团地铁工程有限公司 A kind of gateway open excavation section inverted side-wall construction method
CN106567717A (en) * 2015-10-10 2017-04-19 中铁隧道勘测设计院有限公司 Construction oblique channel structure utilizing subway exit and entrance and construction method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101148987A (en) * 2007-11-01 2008-03-26 中铁隧道勘测设计院有限公司 Method for employing whole dark digging method to construct underground station transferring point
CN105003272A (en) * 2015-07-26 2015-10-28 北京工业大学 Reversed construction method for expanding and excavating stations on sectional shield tunnel foundations of subways
CN204941545U (en) * 2015-09-19 2016-01-06 中铁二十二局集团第一工程有限公司 Station boring construction system
CN205100989U (en) * 2015-10-10 2016-03-23 中铁隧道勘测设计院有限公司 Utilize oblique access structure of subway access & exit double as construction
CN106567717A (en) * 2015-10-10 2017-04-19 中铁隧道勘测设计院有限公司 Construction oblique channel structure utilizing subway exit and entrance and construction method
CN106150506A (en) * 2016-07-08 2016-11-23 中铁十六局集团地铁工程有限公司 A kind of gateway open excavation section inverted side-wall construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109372518A (en) * 2018-09-28 2019-02-22 北京交通大学 A kind of tunnel mutation anti-excavation construction technology of section

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Effective date of registration: 20191226

Address after: 130031 No. 2138 East Ling Road, two district, Jilin, Changchun

Patentee after: CHINA REILWAY CONSTRUCTION BRIDGE ENGINEERING BUREAU GROUP NO.6 ENGINEERING CO., LTD.

Address before: 116033 No. 9 Sha Yue Street, Shahekou District, Liaoning, Dalian

Patentee before: CHINA RAILWAY CONSTRUCTION BRIDGE ENGINEERING BUREAU GROUP 1ST ENGINEERING CO., LTD.

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