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 PDF

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Publication number
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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CN
China
Prior art keywords
lining
top
construction
pilot tunnel
center pillar
Prior art date
Application number
CN201710638324.1A
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Chinese (zh)
Inventor
高辛财
吕亮
惠丽萍
易建伟
鲍凯
乔峰
邱婧
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北京市市政工程设计研究总院有限公司
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Priority to CN201710638324.1A priority Critical patent/CN107218046A/en
Publication of CN107218046A publication Critical patent/CN107218046A/en

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    • 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
    • E21D11/38Waterproofing; Heat insulating; Soundproofing; Electric insulating
    • 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

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

Mechanical assistance sealing Station structure and construction method in a kind of pilot tunnel

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.
CN201710638324.1A 2017-07-31 2017-07-31 Mechanical assistance sealing Station structure and construction method in a kind of pilot tunnel CN107218046A (en)

Priority Applications (1)

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CN201710638324.1A CN107218046A (en) 2017-07-31 2017-07-31 Mechanical assistance sealing Station structure and construction method in a kind of pilot tunnel

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Application Number Priority Date Filing Date Title
CN201710638324.1A CN107218046A (en) 2017-07-31 2017-07-31 Mechanical assistance sealing Station structure and construction method in a kind of pilot tunnel

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
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

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