CN107218046A - Mechanical assistance sealing Station structure and construction method in a kind of pilot tunnel - Google Patents
Mechanical assistance sealing Station structure and construction method in a kind of pilot tunnel Download PDFInfo
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- CN107218046A CN107218046A CN201710638324.1A CN201710638324A CN107218046A CN 107218046 A CN107218046 A CN 107218046A CN 201710638324 A CN201710638324 A CN 201710638324A CN 107218046 A CN107218046 A CN 107218046A
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- 238000010276 construction Methods 0.000 title claims abstract description 66
- 238000007789 sealing Methods 0.000 title claims abstract description 21
- 238000009412 basement excavation Methods 0.000 claims abstract description 15
- 238000005266 casting Methods 0.000 claims abstract description 9
- 238000007363 ring formation reaction Methods 0.000 claims abstract description 3
- 239000002131 composite material Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 25
- 239000003673 groundwater Substances 0.000 description 8
- 238000001556 precipitation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005641 tunneling Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses mechanical assistance sealing Station structure and construction method in a kind of pilot tunnel, it uses following steps：1) vertical shaft, transverse passage-way and pilot tunnel, are applied；2), mechanical execution skirt piles, waterproof between piles curtain and center pillar pile foundation, mechanical assistance formed by integrally casting concrete and center pillar are installed, and pour stake top Guan Liang, top longeron and the lining structure of hogging two；3), apply just branch button arch and complete to backfill in pilot tunnel；4), apply side and encircle two lining structures, complete two lining button arches；5), downward earth excavation pours middle plate and the lining structure of the above two to middle plate；6), continue downward earth excavation to bottom plate, pour bottom plate and the lining structure of the above two, two lining structures closing cyclization.The present invention can solve the problems, such as Station sealing construction, cancel the lower pilot drive in traditional cavern-pile method, it is to avoid requirement of the lower pilot drive to dewatering construction, and center pillar using pile foundation, as construction and permanent structure stress basis, eliminates bottom girder under post.
Description
Technical field
The present invention relates to Station structural shape and construction method in city track traffic engineering.
Background technology
Mainly there be the construction method of Station in current city track traffic engineering：Middle hole method, side hole method, post hole method,
Cavern-pile method, once button arch method.Wherein middle hole method, side hole method, post hole method use partial excavation, perform just branch structure, open in the ban
Dig after the advanced certain distance in part, then carry out the excavation at next position, two lining structures need to equally take segmentation, branch's piecemeal to apply
Work；Cavern-pile method and once button arch method are to utilize " pilot tunnel " as after construction working face formation structure vertical applied force system, then are entered
Just branch button encircles row, then from top to bottom inverse to build construction agent structure.
Cavern-pile method：Stress system at initial stage is collectively formed by skirt piles, center pillar, top longeron, bottom girder, crown, bears to construct
The load of journey；Its main thought is that lid digging and substep subsurface excavation method combine, and respective advantage is played, in the guarantor of top cover
Shield is lower can successively to excavate the soil body downwards, apply secondary lining, can use along making and against two methods construction is made, ultimately form by
The permanent carrying system that preliminary bracing+secondary lining is combined.
Once button arch law technology core is：The end bay crown and base arrangement of three arcading frameworks are chosen, is fitted respectively simultaneously
Form upper and lower pilot tunnel；Bottom plate and bottom girder directly, are disposably formed prior to other components in lower pilot tunnel；In upper and lower pilot tunnel
Between formed vertical supporting component；Branch is propped up at the beginning of being crown at the beginning of upper pilot tunnel, and crown and top longeron secondary lining can be straight in upper pilot tunnel
Connect, disposably complete.
In summary, cavern-pile method and once button arch method be primarily present upper and lower two layers of pilot tunnel, multiple electrodes are relatively obvious, apply
Man-hour influences larger to surrounding enviroment.It is built and building similar Station Project with reference to Beijing area, because station structure section is big, be
Engineering risk is avoided, station construction is using dewatering construction as premise, i.e., before station structure is excavated, periphery need to be excavated along station pre-
Dewatering well is first set, first level of ground water is down to below structural excavation bottom surface after 1m, and carries out continuing precipitation work in work progress
Industry, then excavate station structure.Therefore, not by influence on groundwater when skirt piles and center pillar are constructed, mainly it is able to by manually digging hole
Realize.
At present, it is built and building Station use dewatering construction, dewatering construction mode be broadly divided into surface precipitation and
Precipitation in hole, specifically refers to Fig. 9, Figure 10.Dewatering construction, is unfavorable for the protection of China's groundwater resources, and is easily caused underground water
The pollution and waste of resource, non-permanent plan.As Mined is accumulated with developing, structural shape and construction party of the present invention
Method can realize Station sealing construction, be conducive to the protection of groundwater resources.
According to the related Station sealing patent retrieved：A kind of cavern-pile method bored tunnel water-stop curtain and its construction
Method (CN201610035449.0), its structural shape is made up of upper and lower 2 pilot tunnels, and pilot tunnel construction is by tunneling boring or week
Wall ejection for water plugging is obtained in realization, then level and vertical levels slip casting/rotary-spraying construction is carried out by upper and lower pilot tunnel, so as to realize
Station tunneling boring sealing, specifically refers to Figure 11.Influenceed by lower floor's pilot tunnel, this patent engineering sealing cost is big.
The content of the invention
It is an object of the invention to provide mechanical assistance sealing Station structure and construction method in a kind of pilot tunnel, to solve
The technical problem of Station not dewatering construction.
In order to realize foregoing invention purpose, the technical solution adopted in the present invention is as follows：
Mechanical assistance sealing Station construction method in a kind of pilot tunnel, it uses following steps,
1st, vertical shaft, transverse passage-way and pilot tunnel are applied；
Upside-down well wall approach construction shaft is used by ground, is excavated to behind transverse passage-way bottom, back cover is carried out to construction shaft；Then
Shaft wall, excavation construction transverse passage-way are abolished, after after transverse passage-way end-blocking, recycles construction transverse passage-way to excavate station main hole
(pilot tunnel containing side and middle drift).
2nd, mechanical execution skirt piles, waterproof between piles curtain and center pillar pile foundation, mechanical assistance formed by integrally casting concrete and center pillar peace
Dress, pours stake top Guan Liang, top longeron and the lining structure of hogging two (waterproof layer containing vault)；
By the use of side pilot tunnel as operation side, waterproof between piles curtain is applied using drilling machine construction skirt piles, plant equipment, poured
Stake top Guan Liang is built, station building enclosure is formed and end bay vertically carries system；
By the use of middle drift as operation side, using drilling machine construction center pillar pile foundation, mechanical assistance formed by integrally casting concrete
And center pillar is installed, hogging vault waterproof layer is laid, capital top longeron and the lining structure of hogging two is poured, is formed and held in station across vertically
Carrier system；
3rd, apply just branch button arch and complete to backfill in pilot tunnel；
Construction transverse passage-way is recycled to apply station just branch button arch, so as to form working space approximately close, independent；Should
Working space bottom is influenced each other by strengthening the isolation of skirt piles building-in depths with surrounding enviroment.
4th, apply side and encircle two lining structures (containing vault and side wall waterproof layer), complete two lining button arches；
5th, encircle after side after two lining structures reach design strength, downward earth excavation to middle plate, clay model pour middle plate and more than
Two lining structures (waterproof layer containing side wall)；
6th, after middle plate and above structure reach design strength, continue downward earth excavation to bottom plate, apply bottom cushion
And waterproof layer, pour bottom plate and the lining structure of the above two, two lining structures closing cyclization.
Mechanical assistance sealing Station structure in a kind of pilot tunnel, two side pilot tunnels of top cavern and the top of middle drift
For first branch button arch and side arch, the lining structure composite bed of hogging two, the bottom of top cavern is middle plate, and bottom cavern is located at middle plate and bottom
Between plate, bottom plate, side wall, side arch and hogging are externally provided with waterproof layer.It is skirt piles, stake top hat outside top, the both walls of bottom cavern
Beam and waterproof between piles curtain, top, the centre of bottom cavern are center pillar pile foundation, center pillar and top longeron, first branch button arch and side arch two
Lining structure composite bed one end is supported at the top of the skirt piles of both sides in Guan Liang, the other end is supported on the longeron of top, between both sides skirt piles, stake
Water-stop curtain, stake top Guan Liang and the lining of side arch two form station building enclosure and end bay vertical supporting system；First branch button arch and hogging
Two lining structure composite bed two ends be supported on top longeron on, by as the center pillar pile foundation of permanent primary structure member, center pillar, top longeron and in
Encircle across vertical supporting system in two lining structures formation station；The both sides skirt piles, center pillar pile foundation are extended to below bottom plate.
Advantages of the present invention and good effect are as follows：
1st, the lower pilot drive in traditional cavern-pile method, once button arch method can be cancelled, individual layer pilot tunnel is only applied, terminated tunneling
The risk of manually digging hole pile and manually installed steel pipe column in the pilot tunnel of station, it is to avoid lower pilot drive is wanted to dewatering construction
Ask, weaken multiple electrodes, reduction construction risk and the influence to surrounding enviroment, applied while substantially increasing Station mechanization
Engineering degree and operating efficiency；
2nd, mechanization applies skirt piles, waterproof between piles curtain, center pillar pile foundation, improves mechanized construction level, reduction tunneling
Labor operation intensity and engineering risk；
3rd, mechanical assistance integrated construction center pillar and pile foundation, it is to avoid be positioned manually, install center pillar and cut pile crown, are improved
Efficiency of construction and improve construction operation environment；
4th, when level of ground water is located at below pilot tunnel, vertical water-stop curtain is applied downwards using pilot tunnel：Between cast-in-situ bored pile+stake
Churning, casing bitten pile etc., can avoid dewatering construction, save groundwater resources, reduce adverse effect of the precipitation to surrounding enviroment,
Reduce the risk in Station work progress caused by underground water seepage；
5th, center pillar pile foundation is constructed and permanent holding force basis as center pillar, and the post bottom eliminated in traditional structure pattern is vertical
Beam, reduces construction costs.
The construction tunneling underground station under same environmental conditions can expire the present invention with " cavern-pile method " and " once detaining arch method "
Sufficient station architecture functional requirement, its economic technology Comprehensive Comparison situation is as shown in table 1.
Brief description of the drawings
Fig. 1 be the present invention apply vertical shaft, transverse passage-way and upper strata pilot tunnel structural representation.
Fig. 2 is that the present invention applies skirt piles, waterproof between piles curtain, center pillar pile foundation, and formed by integrally casting concrete and center pillar install,
Pour stake top Guan Liang, top longeron and the lining structure schematic diagram of hogging two.
The just branch button that applies that Fig. 3 is the present invention encircles and completed backfill structural representation in pilot tunnel.
Fig. 4 is that two lining structures (containing vault and side wall waterproof layer) are encircleed on side and the lining of completion two is detained arch structures and shown for of the invention applying
It is intended to.
Fig. 5 be the present invention downward earth excavation to middle plate, pour middle plate and the lining structure schematic diagram of the above two.
Fig. 6 is that the downward of the present invention is excavated to bottom plate, applies bottom cushion and waterproof layer, pours bottom plate and the lining knot of the above two
Structure schematic diagram.
Fig. 7 is mechanical assistance sealing Station supporting construction sectional drawing in the pilot tunnel of the present invention.
Fig. 8 is mechanical assistance sealing Station Main Structural Section figure in the pilot tunnel of the present invention.
Fig. 9 is prior art Station surface precipitation structure section figure.
Figure 10 is Precipitation Structure sectional drawing in prior art Station pilot tunnel.
Figure 11 is the cavern-pile method bored tunnel water-stop curtain and its construction method structure section figure of existing sealing patented technology.
Figure 12 is the section structure schematic diagram of existing cavern-pile method construction.
Figure 13 is the section structure schematic diagram of existing once button arch method construction.
Numbered in figure：1st, ground, 2, construction shaft, 3, construction transverse passage-way, 4, one of side pilot tunnel, 5, middle drift, 6, side leads
The two of hole, 7, level of ground water, 8, top longeron and hogging two are served as a contrast, and 9, one of waterproof between piles curtain, 10, center pillar, 11, waterproof between piles curtain
The two of curtain, 12, water barrier (natural/artificial), 13, one of side column, 14, center pillar pile foundation, 15, the two of skirt piles, 16, stake top Guan Liang,
17th, pilot tunnel backfill, 18, first branch button arch, 19, side encircle two lining structures, 20, middle plate and the lining structure of the above two, 21, bottom plate and the above two
Lining structure, 22, bottom cushion and waterproof layer.
Embodiment
Mechanical assistance sealing Station structure in a kind of pilot tunnel, two side pilot tunnels of top cavern and the top of middle drift
For first branch button arch and side arch, the lining structure composite bed of hogging two, the bottom of top cavern is middle plate, and bottom cavern is located at middle plate and bottom
Between plate, bottom plate, side wall, side arch and hogging are externally provided with waterproof layer.It is skirt piles, stake top hat outside top, the both walls of bottom cavern
Beam and waterproof between piles curtain, top, the centre of bottom cavern are center pillar pile foundation, center pillar and top longeron, first branch button arch and side arch two
Lining structure composite bed one end is supported at the top of the skirt piles of both sides in Guan Liang, the other end is supported on the longeron of top, between both sides skirt piles, stake
Water-stop curtain, stake top Guan Liang and the lining of side arch two form station building enclosure and end bay vertical supporting system；First branch button arch and hogging
Two lining structure composite bed two ends be supported on top longeron on, by as the center pillar pile foundation of permanent primary structure member, center pillar, top longeron and in
Encircle across vertical supporting system in two lining structures formation station；The both sides skirt piles, center pillar pile foundation are extended to below bottom plate.
Mechanical assistance sealing Station construction method in the pilot tunnel of the present invention：Construction shaft is excavated to behind transverse passage-way bottom,
Back cover is carried out to construction shaft, then excavation construction transverse passage-way, transverse passage-way excavates station main hole (pilot tunnel containing side using constructing
And middle drift).Operation side mechanical execution skirt piles, waterproof between piles curtain are used as by side pilot tunnel, stake top Guan Liang is poured, is formed
Station building enclosure and end bay vertically carry system；Operation side mechanical execution center pillar pile foundation, one are used as by middle drift
Casting concrete and center pillar are installed, and pour capital top longeron and the lining structure of hogging two, are formed in station across vertically carrying system.Again
At the beginning of applying station using transverse passage-way of constructing branch button encircle so that formed approximately close (bottom by strengthen skirt piles building-in depth every
Influenced each other with surrounding enviroment absolutely), independent working space, it is from top to bottom inverse to build station two lining structure, complete station main body
Structure construction.The structural representation of the present invention is referring to Fig. 7.
Specific steps：
1st, vertical shaft, transverse passage-way and pilot tunnel (pilot tunnel containing side and middle drift) are applied, it is shown in Figure 1.
Upside-down well wall approach construction shaft is used by ground, is excavated to behind transverse passage-way bottom, back cover is carried out to construction shaft；Then
Shaft wall, excavation construction transverse passage-way are abolished, after after transverse passage-way end-blocking, recycles construction transverse passage-way to excavate station main hole
(pilot tunnel containing side and middle drift).
2nd, machinery applies skirt piles, waterproof between piles curtain and center pillar pile foundation, mechanical assistance formed by integrally casting concrete and center pillar peace
Dress, pours stake top Guan Liang, top longeron and the lining structure of hogging two (waterproof layer containing vault), shown in Figure 2.
By the use of side pilot tunnel as operation side mechanical execution skirt piles, waterproof between piles curtain, stake top Guan Liang is poured, car is formed
Building enclosure of standing and end bay vertically carry system；
Operation side mechanical execution center pillar pile foundation, mechanical assistance formed by integrally casting concrete and center pillar are used as by the use of middle drift
Install, lay hogging vault waterproof layer, pour capital top longeron and the lining structure of hogging two, formed in station across vertical supporting body
System.
3rd, apply just branch button arch and complete to backfill in pilot tunnel, it is shown in Figure 3.
Construction transverse passage-way is recycled to apply station just branch button arch, so as to form working space approximately close, independent；Should
Working space bottom is influenced each other by strengthening the isolation of skirt piles building-in depths with surrounding enviroment.
4th, apply side and encircle two lining structures (containing vault and side wall waterproof layer), complete two lining button arches, it is shown in Figure 4.
5th, downward earth excavation pours middle plate and the lining structure of the above two (waterproof layer containing side wall), referring to Fig. 5 institutes to middle plate
Show.
6th, bottom plate is excavated to downwards, bottom cushion and waterproof layer is applied, and bottom plate and the lining structure of the above two is poured, referring to Fig. 6
It is shown.
Mechanical assistance sealing Station supporting construction sectional drawing is shown in Figure 7 in pilot tunnel of the present invention after construction, leads
Mechanical assistance sealing Station Main Structural Section is shown in Figure 8 in hole.
Mechanical assistance sealing Station construction method construction speed is mainly controlled by mechanical piling level in hole in pilot tunnel,
By constantly updating pile-forming equipment, efficiency of construction can be effectively improved；When level of ground water is below the pilot tunnel of upper strata, it can evade completely
The problem of dewatering construction.
Table 1：
Claims (2)
1. mechanical assistance sealing Station construction method in a kind of pilot tunnel, it uses following steps：
1) vertical shaft, transverse passage-way and pilot tunnel, are applied；
Upside-down well wall approach construction shaft is used by ground, is excavated to behind transverse passage-way bottom, back cover is carried out to construction shaft, then excavated
Construction transverse passage-way, utilizes transverse passage-way of constructing to excavate station main hole, the main hole pilot tunnel containing side and middle drift；
2), mechanical execution skirt piles, waterproof between piles curtain and center pillar pile foundation, mechanical assistance formed by integrally casting concrete and center pillar are installed,
Pour stake top Guan Liang, top longeron and the lining structure of hogging two, waterproof layer containing vault；
By the use of side pilot tunnel as operation side, waterproof between piles curtain is applied using drilling machine construction skirt piles, plant equipment, stake is poured
Apical cap beam, forms station building enclosure and end bay vertically carries system；
By the use of middle drift as operation side, using drilling machine construction center pillar pile foundation, mechanical assistance formed by integrally casting concrete and in
Post is installed, and lays hogging vault waterproof layer, is poured capital top longeron and the lining structure of hogging two, is formed in station across vertical supporting body
System；
3), apply just branch button arch and complete to backfill in pilot tunnel；
Construction transverse passage-way is recycled to apply station just branch button arch, so as to form working space approximately close, independent；The operation
Space bottom is influenced each other by strengthening the isolation of skirt piles building-in depths with surrounding enviroment.
4), apply side and encircle two lining structures, containing vault and side wall waterproof layer, complete two lining button arches；
5), after side two lining structures of arch reach design strength, downward earth excavation is to middle plate, and clay model pours middle plate and the lining of the above two
Structure, waterproof layer containing side wall；
6), after middle plate and above structure reach design strength, continue downward earth excavation to bottom plate, apply bottom cushion and anti-
Water layer, pours bottom plate and the lining structure of the above two, two lining structures closing cyclization.
2. mechanical assistance sealing Station structure in a kind of pilot tunnel, it is characterised in that two side pilot tunnels of top cavern are with
The top of pilot tunnel is first branch button arch and side arch, the lining structure composite bed of hogging two, and the bottom of top cavern is middle plate, bottom cavern position
Between middle plate and bottom plate, bottom plate, side wall, side arch and hogging are externally provided with waterproof layer；It is side outside top, the both walls of bottom cavern
Stake, stake top Guan Liang and waterproof between piles curtain, top, the centre of bottom cavern are center pillar pile foundation, center pillar and top longeron, first branch button arch
It is supported on side two lining structure composite bed one end of arch at the top of the skirt piles of both sides in Guan Liang, the other end is supported on the longeron of top, by both sides
Skirt piles, waterproof between piles curtain, stake top Guan Liang and the lining of side arch two form station building enclosure and end bay vertical supporting system；First branch button
Arch and the lining structure composite bed two ends of hogging two are supported on the longeron of top, by being used as the center pillar pile foundation of permanent primary structure member, center pillar, top
Across vertical supporting system in longeron and the lining structure of hogging two formation station；The both sides skirt piles, center pillar pile foundation extend to bottom plate with
Under.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108019211A (en) * | 2018-01-23 | 2018-05-11 | 中国铁路设计集团有限公司 | Waterproof of man and its construction method in a kind of pilot tunnel of rich water sand-pebble layer |
| CN108590700A (en) * | 2018-02-14 | 2018-09-28 | 北京城建道桥建设集团有限公司 | One kind secretly checking room equipment opening/manhole and its construction method |
| CN108797641A (en) * | 2018-07-20 | 2018-11-13 | 中铁十八局集团有限公司 | A kind of structure and its construction method of Underground Subway Station construction period full station sealing |
| CN108797620A (en) * | 2018-05-25 | 2018-11-13 | 北京地矿工程建设有限责任公司 | A kind of OPT construction method of interlocking pile |
| CN109026080A (en) * | 2018-08-03 | 2018-12-18 | 中铁隆工程集团有限公司 | A kind of Underground Subway Station water sealing structure and its construction method |
| CN109578014A (en) * | 2019-01-28 | 2019-04-05 | 中铁第六勘察设计院集团有限公司 | Anti- dash forward of one kind gushes back cover structure and construction method |
| CN109610524A (en) * | 2018-11-29 | 2019-04-12 | 北京地矿工程建设有限责任公司 | The detection of OPT interlocking pile and course control method for use |
| CN109899087A (en) * | 2019-01-21 | 2019-06-18 | 成都市建筑设计研究院 | A kind of hole column tunneling is inverse to build underground structure and construction method |
| CN110159298A (en) * | 2019-06-06 | 2019-08-23 | 中铁一局集团第二工程有限公司 | A kind of first branch button arch construction method of Underground Subway Station |
| CN110486034A (en) * | 2019-09-19 | 2019-11-22 | 北京市政建设集团有限责任公司 | Subway station and construction method based on pile foundation in four pilot tunnel of single layer and middle drift |
| CN110985074A (en) * | 2019-12-20 | 2020-04-10 | 中铁第一勘察设计院集团有限公司 | Underground excavation station structure for increasing foundation bearing capacity and PBA construction method thereof |
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| CN113738379A (en) * | 2021-09-23 | 2021-12-03 | 北京市政建设集团有限责任公司 | Construction method of underground excavation subway station with double-line shield tunnel passing station in advance |
| CN114033390A (en) * | 2021-11-12 | 2022-02-11 | 中铁北京工程局集团(天津)工程有限公司 | PBA construction method construction process |
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