CN105781570A - Metro internal-bracing-free track panel shaft and construction method thereof - Google Patents
Metro internal-bracing-free track panel shaft and construction method thereof Download PDFInfo
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- CN105781570A CN105781570A CN201610235000.9A CN201610235000A CN105781570A CN 105781570 A CN105781570 A CN 105781570A CN 201610235000 A CN201610235000 A CN 201610235000A CN 105781570 A CN105781570 A CN 105781570A
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- 238000010276 construction Methods 0.000 title claims abstract description 96
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 7
- 230000008602 contraction Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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- 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
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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- 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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
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- 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining 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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
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- 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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- 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
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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)
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- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
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Abstract
The invention provides a construction method of a metro internal-bracing-free track panel shaft. The construction method includes following steps: (1), constructing a diaphragm wall; (2), constructing a foundation pit, and sequentially constructing a top beam and an internal bracing along with excavating; (3), constructing a baseplate, and demounting the internal bracing positioned downmost the foundation pit after strength of the baseplate reaches a certain degree; (4), constructing a side wall of a negative first floor, synchronously constructing a vertical coupled shear wall, a waist beam and a side wall within a range of a negative second floor; (5), constructing a middle plate, reserving a hole for the track panel shaft on the middle plate, and synchronously constructing a vertical coupled shear wall, a waist beam and a side wall within a range of the negative first floor; (7), constructing a top plate, reserving a hole for the track panel shaft on the top plate, and after strength of the top plate reaches a certain degree, demounting the internal bracing uppermost the foundation pit. The construction method has good water stopping effect, so that water leakage is avoided and big influence on surrounding environment during construction is avoided.
Description
Technical field
The present invention relates to a kind of subway without inner support section of track well and construction method thereof, belong to Railway Transit Construction technical field.
Background technology
Quickening along with urbanization paces, urban population, territory planning and urban ecological environment all suffer from huge pressure, developing urban underground space and become the focus of numerous care, people also recognize that developing with underground railway for key mass rapid transit system is solve the important channel of urban congestion gradually.Facts have proved: subway is quick with it, cleaning, efficient feature, plays irreplaceable effect in the world, such as Tokyo, Moscow, London etc. in the metropolitan traffic system in most of developed areas.In recent years, the subway construction of China have also been obtained swift and violent development.Ending for the end of the year 2015, China has 36 cities and gets permission to build city rail traffic route, and wherein 85 circuits in 19 cities have opened operation, and total kilometrage reaches 2509.52 kilometers.There is rail line in 36 granted cities in anxiety construction, 36,22 cities new line wherein will be had to go into operation, major part region, the radiation whole nation, total kilometrage reaches 927 kilometers, gross investment reaches 502,200,000,000 yuan, it may be said that China have been enter into Urban Rail Transit Project golden age.
In Construction of Urban Rail Traffic process, for meeting the needs laid a railway track, generally will the hole of reserved track lifting well on structural slab AT STATION, this is commonly referred to section of track well for hole of section of track construction.The function of section of track well is to be hung to track-laying vehicle by assembling district by section of track finished product, and transport to work surface of laying a railway track, its position and size should meet the requirement of the safe efficient lifting of the section of track.Unit of laying a railway track requires that section of track well is opened in directly over subway line.The length that rail often saves is generally 25m, and single dimension of opening is about 27m, and width is about 4.5m, hole number according to row rail it needs to be determined that.The section of track well size that punches is generally large, owing to the section of track needs, it will usually being respectively provided with section of track well above left and right line circuit AT STATION, the rigidity of structure is seriously impaired.The structure stress of research construction stage section of track Jing Chu, it is ensured that the station structure safety in the construction stage is just particularly important with stable.
According to section of track well construction lifting requirements, need during section of track well construction the reserved large scale hole of agent structure top board and middle plate.Owing to section of track well bore size is relatively big, on structural slab after reserved section of track well, the rigidity of plate is seriously impaired, and the effect of contraction of side wall is weakened by section of track well segment structure plate.The structure side wall of underground station to bear bigger lateral Water And Earth Pressures and the bigger mobile load caused of constructing, and the rigidity of side wall and effective span are bigger to its stress and deformation effect.Not during reserved section of track well, the rigidity of structure roof and middle plate is very big, and side wall is played good bearing effect by structural slab, and side wall force modes is typical one-way slabs stress, and moment of flexure and deformation are evenly distributed and numerical value is less.On structural slab after reserved section of track well, the effect of contraction of side wall is weakened by structure roof and middle plate, and the vertical effective span of side wall increases, and presents the feature of similar cantilever slab stress, the vertical Bending moment distribution of side wall is uneven, very big in the plate vertical moment of flexure of open area inside wall.Side wall top board has bigger transversely deforming.Therefore, when needs arrange section of track well, reducing perforated area and quantity, minimizing side wall bearing load, the rigidity improving side wall and enhancing support restraint needs emphasis to consider to reduce when the effective span of side wall is the design of section of track well construction.
In prior art, the structural shape of section of track well is usually independent section of track well, and building enclosure adopts cast-in-situ bored pile to add three axes agitating pile water-stop curtain, and reinforces with anchor cable, and agent structure adopts cantilever design scheme.But during anchor cable construction, punch three axes agitating pile water-stop curtain, stagnant water effect is produced very big impact.Anchor cable scheme applicable elements is restricted, for weak soil or poor stratum, because being limited by anchor force, anchorage length is bigger just can meet design requirement, construction risk is relatively big, after completing, the impact of the environment of periphery is relatively big, and some city domestic even forbids using cable bolting in urban area.
Summary of the invention
Based on above deficiency, one aspect of the present invention to solve the technical problem that the construction method being to provide a kind of subway without inner support section of track well, its stagnant water effect is good, avoid the later stage that percolating water phenomenon occurs, construction quality is easily controlled, it is suitable for stratum extensive, it is to avoid produce risk during construction and to surrounding enviroment large effect, avoid the later stage impact on the construction of other constructions of structures simultaneously.
In order to solve above technical problem, present invention employs techniques below scheme:
A kind of subway, without the construction method of inner support section of track well, comprises the following steps:
(1) construction ground-connecting-wall；
(2) within the scope of ground-connecting-wall, below substrate bed course from top to bottom it is excavated to successively, substrate bed course of constructing, complete foundation ditch and close, and along with excavation successively construction Guan Liang and inner support；
(3) construction base plate, reaches after intensity until base plate, removes the inner support being positioned at foundation ditch bottom；
(4) side wall of negative one layer of construction, and the vertical limb wall of synchronous construction, the waist rail bearing two layers of scope and side wall；
(5) plate in construction, and on middle plate, reserve the hole of section of track well, after middle plate reaches intensity, remove the inner support being positioned in the middle part of foundation ditch；
(6) side wall of negative one layer of construction the negative vertical limb wall of one layer of scope of synchronous construction, waist rail and side wall are continued；
(7) construction top board, and on top board, reserve the hole of section of track well, reach after intensity until top board, remove the inner support being positioned at foundation ditch the top.
The step of construction steel architecture neutral post and bearing pile was also had before described step (2).
In described step (3), the construction method of base plate is specifically, longitudinally built concrete to opposite side by foundation ditch side, is laterally built by two lateral middle parts.
In described step (7), while construction top board, carry out the construction of section of track well retaining wall.
In described step (7), before the support removing described the top, also carry out the construction of waterproof roofing layer.
Adopting above technical scheme, the present invention achieves techniques below effect:
Subway provided by the invention is without the construction method of inner support section of track well, its stagnant water effect is good, avoid the later stage that percolating water phenomenon occurs, construction quality is easily controlled, it is suitable for stratum extensive, produce risk when avoiding constructing and to surrounding enviroment large effect, avoid the later stage impact on the construction of other constructions of structures simultaneously.
Another aspect of the present invention to solve the technical problem that and to be to provide a kind of subway without inner support section of track well, and its stagnant water effect is good, adapts to stratum extensive, and construction quality is easily controlled and risk is less, and surrounding enviroment impact is little.
In order to solve above technical problem, present invention employs techniques below scheme:
A kind of subway is without inner support section of track well, including building enclosure and agent structure, described building enclosure includes the ground-connecting-wall being oppositely arranged, described agent structure is arranged in described building enclosure, including being close to the side wall of described ground-connecting-wall setting and being arranged on the vertically limb wall waist rail together with at least of at least one on described side wall.
Described vertical limb wall is set to 4 roads, and is arranged between two on relative side wall.
Described ground-connecting-wall top is provided with Guan Liang, and the two ends of described Guan Liang are connected with described ground-connecting-wall respectively.
It is additionally provided with top board, middle plate and base plate between described side wall, top board, middle plate and base plate are provided with section of track wellhole hole.
Described waist rail is arranged near described middle plate and top board.
Adopting above technical scheme, the present invention achieves techniques below effect:
(1) subway provided by the invention is without inner support section of track well, and its stagnant water effect is good, adapts to stratum extensive, and construction quality is easily controlled and risk is less, and surrounding enviroment impact is little.
(2) section of track well provided by the invention is also used as shield well, reduces construction site and construction investment, reduces top board and middle plate punches area, realize section of track well standardization, construction of conveniently laying a railway track simultaneously.
(3) by arranging limb wall and waist rail shared lateral load at side wall, making full use of the drag of structure own, it is not necessary to other temporary support measures, improve efficiency of construction and quality, the scope of application is more extensive.
Accompanying drawing explanation
Fig. 1 is the subway of the present invention cross-sectional structure chart without inner support section of track well；
Fig. 2 is that subway of the present invention is without the top view after the building enclosure construction of inner support section of track well；
Fig. 3 is A-A sectional view shown in Fig. 2；
Fig. 4 is B-B sectional view shown in Fig. 2.
Detailed description of the invention
As Figure 1-Figure 4, the invention provides a kind of subway without inner support section of track well, including building enclosure and agent structure, described building enclosure includes the ground-connecting-wall 1 being oppositely arranged, described agent structure is arranged in described building enclosure, including side wall 2, at least one vertical limb wall 3 waist rail 4 together with at least of being arranged on side wall 2, described side wall 2 is close to ground-connecting-wall 1 and is arranged.
Ground-connecting-wall 1 is reinforced concrete structure, and described ground-connecting-wall top is provided with hat beam 5, and relative ground-connecting-wall 1 is coupled together by hat beam 5.Building enclosure also includes being arranged on the central post 6 between relative side wall 2 and inner support 12, and central post 6 is connected by coupling beam, and central post top is connected with inner support, inner support 12 is supported；Inner support at least 3 road, lays respectively at the top of ground-connecting-wall, middle part and bottom.When inner support 12 and central post 6 are for section of track well main structure construction, ground-connecting-wall being supported, in main structure construction process, inner support 12 and central post 6 are removed successively.Being additionally provided with top board 7 and base plate 8 between relative side wall 2, top board 7 and be provided with section of track wellhole hole 9 on base plate 8, section of track wellhole hole 9 can also serve as shield machine working shaft hole.Being also respectively provided with vertical limb wall 3 on side wall 2, vertical limb wall 3 is set to 4 roads, and is arranged between two on relative side wall 2.Waist rail 4 is arranged near middle plate 10 and top board 11, vertically suitably has additional waist rail, makes limb wall and waist rail shared lateral load.
The building enclosure of section of track well of the present invention adopts the form of ground-connecting-wall, and stagnant water effect is good, adapts to stratum extensive, and construction quality is easily controlled and risk is less, and surrounding enviroment impact is little；Section of track well can serve as shield well, reduces construction site and construction investment, reduces top board and middle plate punches area, realize section of track well standardization, construction of conveniently laying a railway track simultaneously；Arranging limb wall and waist rail shared lateral load at side wall, make full use of the drag of structure own, it is not necessary to other temporary support measures, improve efficiency of construction and quality, the scope of application is more extensive.
Present invention also offers a kind of subway construction method without inner support section of track well, comprise the following steps:
(1) construction of ground-connecting-wall 1 is carried out；
(2) first construction steel architecture neutral post 6 and bearing pile, be then from top to bottom excavated to below substrate bed course successively in ground-connecting-wall 1 scope, substrate bed course of constructing, and completes foundation ditch and closes, and along with excavation successively construction Guan Liang and inner support 12；
(3) construction base plate 8, after base plate 8 reaches intensity, removes the inner support 12 being positioned at foundation ditch bottom；The construction method of base plate, specifically, longitudinally built to opposite side by foundation ditch side by concrete, is laterally built by two lateral middle parts；
(4) side wall of negative one layer of construction, and be synchronously performed vertical limb wall 3, bear the waist rail of two layers of scope and the construction of side wall 2；
(5) plate 10 in construction, and on middle plate 10, reserve section of track wellhole hole 9, after middle plate 10 reaches intensity, remove the inner support being positioned in the middle part of foundation ditch；
(6) side wall of negative one layer of construction the negative vertical limb wall 3 of one layer of scope of synchronous construction, waist rail 4 and side wall 2 are continued；
(7) construction top board 7, and on top board 7, reserve section of track wellhole hole 9, after top board 7 reaches intensity, carry out the construction of top board 7 waterproof layer, then remove the inner support being positioned at foundation ditch the top；The construction of section of track well retaining wall is carried out while construction top board.
Subway of the present invention adds the support system of inner support without the ground-connecting-wall that the construction method employing stagnant water effect of inner support section of track well is good, work progress is progressively removed inner support, ground-connecting-wall stagnant water effect is good, avoid the later stage that percolating water phenomenon occurs, inner support construction quality is easily controlled, and is suitable for stratum wide, it is to avoid produce risk during construction and to surrounding enviroment large effect, avoid the later stage impact on the construction of other buildings simultaneously, make full use of the underground space；And agent structure adopts shield machine working shaft to also serve as section of track well, reduce plate and punch area and quantity, and at side wall limb wall is set and waist rail increases structure reactance shared lateral load, it is not necessary to other temporary support measures, improve efficiency of construction and quality.
Last it is noted that these are only the preferred embodiments of the present invention; it is not limited to the present invention; although the present invention being described in detail with reference to embodiment; for a person skilled in the art; technical scheme described in foregoing embodiments still can be modified by it; or wherein portion of techniques feature is carried out equivalent replacement; but all within the spirit and principles in the present invention; any amendment of being made, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. a subway is without the construction method of inner support section of track well, it is characterised in that comprise the following steps:
(1) construction ground-connecting-wall；
(2) within the scope of ground-connecting-wall, below substrate bed course from top to bottom it is excavated to successively, substrate bed course of constructing, complete foundation ditch and close, and along with excavation successively construction Guan Liang and inner support；
(3) construction base plate, reaches after intensity until base plate, removes the inner support being positioned at foundation ditch bottom；
(4) side wall of negative one layer of construction, and the vertical limb wall of synchronous construction, the waist rail bearing two layers of scope and side wall；
(5) plate in construction, and on middle plate, reserve the hole of section of track well, after middle plate reaches intensity, remove the inner support being positioned in the middle part of foundation ditch；
(6) side wall of negative one layer of construction the negative vertical limb wall of one layer of scope of synchronous construction, waist rail and side wall are continued；
(7) construction top board, and on top board, reserve the hole of section of track well, reach after intensity until top board, remove the inner support being positioned at foundation ditch the top.
2. subway according to claim 1 is without the construction method of inner support section of track well, it is characterised in that: before described step (2), also have the step of construction steel architecture neutral post and bearing pile.
3. subway according to claim 1 is without the construction method of inner support section of track well, it is characterized in that: in described step (3), the construction method of base plate is specially, concrete is longitudinally built to opposite side by foundation ditch side, is laterally built by two lateral middle parts.
4. subway according to claim 1 is without the construction method of inner support section of track well, it is characterised in that: in described step (7), while construction top board, carry out the construction of section of track well retaining wall.
5. subway according to claim 1 is without the construction method of inner support section of track well, it is characterised in that: in described step (7), before the support removing described the top, also carry out the construction of waterproof roofing layer.
6. a subway is without inner support section of track well, including building enclosure and agent structure, it is characterized in that: described building enclosure includes the ground-connecting-wall being oppositely arranged, described agent structure is arranged in described building enclosure, including being close to the side wall of described ground-connecting-wall setting and being arranged on the vertically limb wall waist rail together with at least of at least one on described side wall.
7. subway according to claim 6 is without inner support section of track well, it is characterised in that: described vertical limb wall is set to 4 roads, and is arranged between two on relative side wall.
8. subway according to claim 6 is without inner support section of track well, it is characterised in that: described ground-connecting-wall top is provided with Guan Liang, and the two ends of described Guan Liang are connected with described ground-connecting-wall respectively.
9. subway according to claim 6 is without inner support section of track well, it is characterised in that: it is additionally provided with top board, middle plate and base plate between described side wall, top board, middle plate and base plate are provided with section of track wellhole hole.
10. subway according to claim 9 is without inner support section of track well, it is characterised in that: described waist rail is arranged near described middle plate and top board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235000.9A CN105781570B (en) | 2016-04-14 | 2016-04-14 | A kind of construction method of subway without inner support section of track well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610235000.9A CN105781570B (en) | 2016-04-14 | 2016-04-14 | A kind of construction method of subway without inner support section of track well |
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| CN105781570A true CN105781570A (en) | 2016-07-20 |
| CN105781570B CN105781570B (en) | 2018-06-26 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869172A (en) * | 2017-04-01 | 2017-06-20 | 中交第二航务工程局有限公司 | In-situ deposited prefabricated split-mounting type subway underground station construction method |
| CN108487252A (en) * | 2018-03-13 | 2018-09-04 | 中铁第四勘察设计院集团有限公司 | A kind of deep foundation pit open cutting is suitable to make construction method |
| CN110258633A (en) * | 2019-06-27 | 2019-09-20 | 中铁第四勘察设计院集团有限公司 | A kind of Underground Station section of track well with prestressed concrete beam |
| CN113186761A (en) * | 2021-04-02 | 2021-07-30 | 北京城建设计发展集团股份有限公司 | Single-hole double-path intensive track laying system for subway open-cut station |
| CN113529792A (en) * | 2021-08-09 | 2021-10-22 | 中铁工程装备集团有限公司 | Subway station construction method, foundation pit excavation method and foundation pit |
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| JP2007332724A (en) * | 2006-06-19 | 2007-12-27 | East Japan Railway Co | Method of constructing impervious wall, and method of preventing liquefaction |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869172A (en) * | 2017-04-01 | 2017-06-20 | 中交第二航务工程局有限公司 | In-situ deposited prefabricated split-mounting type subway underground station construction method |
| CN106869172B (en) * | 2017-04-01 | 2019-01-04 | 中交第二航务工程局有限公司 | In-situ deposited prefabricated split-mounting type subway underground station construction method |
| CN108487252A (en) * | 2018-03-13 | 2018-09-04 | 中铁第四勘察设计院集团有限公司 | A kind of deep foundation pit open cutting is suitable to make construction method |
| CN110258633A (en) * | 2019-06-27 | 2019-09-20 | 中铁第四勘察设计院集团有限公司 | A kind of Underground Station section of track well with prestressed concrete beam |
| CN113186761A (en) * | 2021-04-02 | 2021-07-30 | 北京城建设计发展集团股份有限公司 | Single-hole double-path intensive track laying system for subway open-cut station |
| CN113529792A (en) * | 2021-08-09 | 2021-10-22 | 中铁工程装备集团有限公司 | Subway station construction method, foundation pit excavation method and foundation pit |
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| Publication number | Publication date |
|---|---|
| CN105781570B (en) | 2018-06-26 |
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Inventor after: Nong Xingzhong Inventor after: Wang Ling Inventor after: Di Lihua Inventor after: Shi Haiou Inventor after: Zhang Yueming Inventor after: Shi Cehui Inventor before: Wang Ling Inventor before: Di Lihua Inventor before: Zhang Yueming Inventor before: Shi Cehui |