CN104612711B - Lining segment structure of city subway up-down section overlapping shield tunnels - Google Patents
Lining segment structure of city subway up-down section overlapping shield tunnels Download PDFInfo
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- CN104612711B CN104612711B CN201510066597.4A CN201510066597A CN104612711B CN 104612711 B CN104612711 B CN 104612711B CN 201510066597 A CN201510066597 A CN 201510066597A CN 104612711 B CN104612711 B CN 104612711B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/08—Lining with building materials with preformed concrete slabs
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- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a lining segment structure of city subway up-down section overlapping shield tunnels. The structure can satisfy construction loads such as the weight of a shield tunneling machine, the pressure supplied by the shield tunneling machine and stratum excavation stress relief under construction and structure safety and deformation under the effect of water and soil pressure and subway train loads during operation, satisfy construction performance of secondary slip casting on the back of a lining segment structure wall and synchronous and uniform slip casting of interlayers between the up-down overlapping tunnels, and at last satisfy the waterproofness and durability of tunnel use. The lining segment structure can be applied to V-level and VI-level strata in a city subway, the separation distance of the up-down overlapping section tunnels is 2 m-3 m, the shield excavation order of down first and then up is used for supplying technical assurance to the segment structure of the city subway up-down section overlapping shield tunnels under the conditions of up-down overlapping complex lines, and the section overlapping tunnels can better solve the problems of limit of surrounding environment, narrow boundary lines of roads and requirements for a net operation transfer function and is applied widely.
Description
Technical field
The present invention relates to technical field of civil engineering, and in particular to a kind of upper and lower interval overlapping shield tunnel of city underground
Lining segment structure.
Background technology
Since 21 century, China has welcome the unprecedented upsurge in construction of subway, ends for the end of the year 2011, what inland of China had been passed through
City has 14, altogether 1688km.Through constantly improving over more than 100 years, shield method with its effect on environment it is little, construction account for
The advantages of ground is less, few earth clearance, good economy performance, working security are good, ground adaptability is good, becomes subway sectional tunnel construction
Middle first-selected engineering method.
The subway construction of early stage, left and right line running tunnel are more than 1 Bei Dong footpaths, work progress according to separate layout, clear distance
And both operation stages influences each other less, special engineering measure need not be taken.With the continuous dilatation of Network scale and existing
The restriction of surrounding enviroment, running tunnel occur in that decussation and the running tunnel of the upper and lower parallel overlap of left and right line go out in succession
Existing, such as Hangzhou Subway is gone out using 90.495 meters of long overlapping tunnels in Line 1 West Lake Cultural Plaza station～Yin Shanmen station shield interval
Cultural Square station, No. 7 lines of Shenzhen Metro magnificent new website～Cladrastis kentukea Rudd hilllock is interval, Radix Crotalariae szemoensis hilllock station～Honghu station is interval and red ridge north～Radix Crotalariae szemoensis
Hilllock interval is avoided to construction of structures or is adapted to station pattern using overlapping shield tunnel form.
Therefore, carry out the research work that interval overlapping shield tunnel builds correlation technique up and down significant, especially
It is the particular design for solving the problems, such as tunnel segment structure itself.Tunnel segment structure is used for city underground V levels and VI levels stratum, upper and lower overlay region
Between tunnel spacing 2m～3m, and using the shield driving order for getting on, get off, be to overlap city ground under complicated alignment condition up and down
Ferrum Shield lining segment structure ensures there is provided technology, and overlapping interval tunnel can preferably solve surrounding enviroment system
About, the problems such as boundary lines of roads is narrow, functional requirement is changed in gauze operation.
According to patent search result, the at present relevant overlapping shield tunnel of interval up and down build and tunnel segment structure designing technique according to
So extremely limit to, only in shield driving order, lower tunnel, movable wheel type trolley supporting system and shield duct piece are noted behind
Sizing process.In order to solve, city underground running tunnel is restricted by surrounding enviroment, boundary lines of roads is narrow, gauze operation transfer function is needed
Running tunnel overlap problem up and down caused by asking etc., with regard to city underground interval overlapping shield tunnel lining segment structure up and down
Design and research are very necessary.
The content of the invention
Restricted by surrounding enviroment for current China's city underground running tunnel, boundary lines of roads is narrow, gauze operation transfer
Upper and lower running tunnel overlap problem caused by functional requirement etc., the invention provides a kind of upper and lower interval overlapping shield of city underground
The lining segment structure in tunnel, structure safety and deformation and slip casting under various load actions during disclosure satisfy that construction and runing
Water resistance and durability that synchronous uniformity, tunnel are used.
A kind of lining segment structure of the upper and lower interval overlapping shield tunnel of city underground, including：By multi-ring section of jurisdiction along longitudinal direction
Assembled up shield tunnel chip architecture and descending shield tunnel chip architecture；
Each endless tube piece is circumferentially assemblied to form by three calibrated bolcks, two adjacent blocks and the block that binds；Wherein, lower half
Ring is assembled by three calibrated bolcks, and the described block that binds is between two adjacent blocks and by two adjacent blocks and lower semi-ring
Calibrated bolck correspondence linking constituting upper semi-ring；
For up shield tunnel chip architecture, on the calibrated bolck of its section of jurisdiction, adjacent block and the block that binds, one is provided only with
Hole for hoist；
For descending shield tunnel chip architecture, the calibrated bolck of its section of jurisdiction are provided with three holes for hoist, adjacent block is provided with
One hole for hoist and two injected holes, the block that binds are provided with a hole for hoist；
Described up shield tunnel chip architecture and descending shield tunnel chip architecture are using the fissure of displacement of one group of two ring
Erection method.
On described calibrated bolck, between the hole of hole for hoist, angle is 22.5 °；Hole for hoist in described adjacent block is set by centre
Put, two injected holes are respectively arranged on adjacent block two ends.
A diameter of 50mm of described hole for hoist, a diameter of 100mm of injected hole.
Described hole for hoist doubles as injected hole.
For arbitrary endless tube piece, the wherein central angle of calibrated bolck is 67.5 °, and the central angle of adjacent block is 68.75 °, is bound
The central angle of block is 20 °.
For arbitrary endless tube piece, its ring and longitudinal direction are with bolts.
The each seam crossing of described section of jurisdiction ring arranges two bolts, and longitudinal direction arranges 16 bolts altogether, wherein the block that binds sets
One, each adjacent block and calibrated bolck are all provided with three.
Preferably, the section of jurisdiction of described descending shield tunnel chip architecture adopts and strengthens Reinforcement Design and wherein bolt employing
M36 types, the section of jurisdiction of up shield tunnel chip architecture adopt the bolt of M30 types；To meet in uplink tunnel shield tunneling process
It is middle because under the load actions such as shield machine weight, downlink tunnel tunnel segment structure stress safety problem.
Preferably, with regard to the staggered joint erection mode of one group of two ring, wherein the block that binds of an endless tube piece is left from directly over vault
11.25 ° of deflection, then from directly over vault, right avertence turns 11.25 ° to the block that binds of another endless tube piece, it is possible to increase downlink tunnel section of jurisdiction
The overall bending rigidity of structure.
For upper and lower interval overlapping shield tunnel, middle stratum only 2～3m, by the driving disturbance of upper and lower tunneling shield it is big, hold
Loading capability is low, and particularly when uplink tunnel shield driving, its body gravity load is obvious to its compression, so as to be delivered to
On lower Structural Test of Tunnel Segments, cause safety problem, intermediate course grouting and reinforcing process need to be carried out from leading tunnel, thus it is necessary
Particular design is carried out to downlink tunnel tunnel segment structure.The important feature of the present invention is to get on, get off shield-tunneling construction sequentially for employing
City underground up and down interval overlapping tunnel downlink tunnel tunnel segment structure has carried out particular design, be mainly manifested in following four side
Face：
(1) in order to meet downlink tunnel lining cutting in uplink tunnel shield tunneling process because of load actions such as shield machine weight
Lower structure stress safety problem, downlink tunnel tunnel segment structure improve 30% using Reinforcement Design, rebar ratio is strengthened, bolt
Improve a grade and use M36 types instead.
(2) from erection method improving the overall bending rigidity of downlink tunnel tunnel segment structure, employ one group of two ring
Staggered joint erection mode, i.e. the first endless tube piece bind block from directly over vault left avertence turn 11.25 °, the second endless tube piece bind block then from
Directly over vault, right avertence turns 11.25 °.
(3) downlink tunnel tunnel segment structure injected hole increases to 16 by 6, meets tunnel surrounding formation slip casting spacing longitudinal direction
1.2m, ring 1.217m, so as to realize downlink tunnel surrounding formation longitudinal direction and the uniform slip casting of ring, reach reinforcing and stablize descending tunnel
Road effect.
(4) each adjacent block two ends of downlink tunnel lining segment structure are all provided with the injected hole of 1 diameter 100mm, because
The increase of bore dia, can carry out the grouting and reinforcing of interlayer different directions between upper and lower tunnel, so as to realize interlayer between upper and lower tunnel
Effective reinforcing.
Therefore, during tunnel segment structure of the present invention disclosure satisfy that construction, shield machine weight, the pressure of shield machine applying and stratum are opened
Structure safety and deformation under Water And Earth Pressures and subway train load action during digging the construction loads such as Stress Release and runing, together
When meet the synchronous uniform mortar depositing construction performance of interlayer between secondary grouting and upper and lower overlapping tunnel after tunnel segment structure wall, finally meet
Water resistance and durability that tunnel is used.The tunnel segment structure can be used for city underground V levels and VI levels stratum, upper and lower overlapping interval
Tunnel spacing 2m～3m, and using the shield driving order for getting on, get off, be to overlap city underground under complicated alignment condition up and down
Shield lining segment structure ensures there is provided technology, and overlapping interval tunnel can preferably solve surrounding enviroment system
About, boundary lines of roads is narrow, gauze operation transfer functional requirement the problems such as and be widely used.
Description of the drawings
Fig. 1 is the piecemeal schematic diagram of tunnel segment structure of the present invention.
Fig. 2 (a) is the first endless tube piece staggered joint erection schematic diagram of tunnel segment structure of the present invention.
Fig. 2 (b) is the second endless tube piece staggered joint erection schematic diagram of tunnel segment structure of the present invention.
Fig. 3 (a) is up shield tunnel chip architecture injected hole of the invention and hole for hoist arrangement schematic diagram.
Fig. 3 (b) is descending shield tunnel chip architecture injected hole of the invention and hole for hoist arrangement schematic diagram.
Specific embodiment
In order to more specifically describe the present invention, below in conjunction with the accompanying drawings and specific embodiment is to technical scheme
It is described in detail.
The track clearance required diameter of the Shield of the present embodiment is 5200mm, additionally, it is contemplated that shield tunnel is applied
Construction error, malformation, tunnel subsidence and measurement error that man-hour will occur etc., reserve 150mm in tunnel perimeter, i.e.,
In tunnel duct piece, headroom is 5500mm.
Present embodiment adopts the plate tunnel segment structure of prefabricated reinforced concrete, and fabric width 1200mm, thickness are 350mm；Such as
Shown in Fig. 1, each endless tube piece is divided into piece calibrated bolck of 6 pieces, i.e., 3 (67.5 ° of central angle), 2 pieces of adjacent blocks (68.75 ° of central angle), and one
Block binds block (20 ° of central angle).
Curved bolt connection, ring is adopted there are totally 12,2 bolts per seam between section of jurisdiction, longitudinal direction sets 16 bolts (envelope altogether
Jacking block 1, calibrated bolck and adjacent block are per block 3).
In order to meet downlink tunnel lining cutting in uplink tunnel shield tunneling process because under the load actions such as shield machine weight
Structure safety problem, downlink tunnel tunnel segment structure improve a grade using Reinforcement Design, bolt is strengthened.
Present embodiment improves the overall bending rigidity of downlink tunnel tunnel segment structure from erection method, using two rings one
The staggered joint erection mode of group, i.e. the first endless tube piece block left avertence from directly over vault that binds turn 11.25 °, shown in such as Fig. 2 (a)；Second
Endless tube piece binds, and then from directly over vault, right avertence turns 11.25 ° to block, such as shown in Fig. 2 (b), is just met for central angle between longitudinal bolt
22.5°。
Present embodiment due between interval overlapping shield tunnel thickness be only 2～3m；For up duct pieces of shield tunnel,
As shown in Fig. 3 (a), the hole for hoist of 1 diameter 50mm is only set per block, and doubles as injected hole, totally 6.For descending shield tunnel
Shown in road section of jurisdiction, such as Fig. 3 (b), every piece of calibrated bolck arranges the hole of 3 diameter 50mm as hole for hoist and injected hole, angle between hole
For 22.5 °；Every piece of adjacent block arranges the hole of 1 diameter 50mm near centre and is used as hole for hoist and injected hole, and two ends arrange straight
Injected hole of the footpath for 100mm；The block that binds arranges the hole of 1 diameter 50mm and is used as hole for hoist and injected hole；Totally 16.
In present embodiment, the allowable error that monolithic section of jurisdiction makes：Width ± 0.3mm；Arc, chord length ± 1.0mm；Thickness ±
1.0mm；Inside radius ± 1.0mm；Ring bolt hole and hole position ± 1.0mm.The allowable error of erecting ring in whole：Section of jurisdiction processed finished products go out
Lining Ring preassembling should be carried out before factory；0.6～the 0.8mm of anchor ring gap of adjacent ring；The adjacent block gap of longitudinal joint is 1.5～2.5mm；
Longitudinal bolt aperture, hole position are respectively ± 1mm, Lining Ring external diameter ± 3.0mm；Axis based error≤50mm during propulsion.
Additionally, the tunnel segment structure of present embodiment need to meet following technical standard：
(1) structure design service life is 100 years；
(2) safe class of structure is one-level, and important coefficient is 1.1；
(3) structure is provided fortification against earthquakes by 7 degree, seismic behavior three-level；
(4) structure design is by 6 grades of people's air defense checking computations；
(5) liner structure deformation analysis：Calculated diameter deforms≤2 ‰ D (D is tunnel external diameter)；
(6) tunnel segment structure crack allowance is carried out but is not allowed insertion, but fracture width≤0.2mm；
(7) when structural anti-buoyancy safety coefficient does not consider side friction power >=1.05, it is considered to during side friction power >=1.1；
(8) shield running tunnel classification of waterproof is two grades；
The tunnel segment structure material of present embodiment is by chosen below：
(1) strength grade of concrete C50, seepage-resistant grade are not less than P10；
(2) reinforcing bar grade：Regular reinforcement preferably adopts HPB300 levels and HRB400 levels, welding rod E4303, E5003.Reinforcing bar it is anti-
Tensile strength measured value is no less than 1.25 with the ratio of yield strength measured value；The yield strength measured value of reinforcing bar and yield strength mark
The ratio of quasi- value not should be greater than 1.3, and percentage of total elongation measured value of the reinforcing bar under maximum pull is no less than 9%；
(3) the bolt 5.8 grades of plain bolts that adopt performance rate made by Q235 steel, and make preservative treatment.
The tunnel segment structure design life of present embodiment is 100 years, and its durability concrete material should meet as follows
Require：
(1) concrete of large volume pouring is avoided using high aquation Hot Cement, and concrete is preferentially adopted mixes high efficiency water reducing agent
Plus the dual mixing technology of high-quality fly ash, top, base plate, side wall preferably adopt high-performance compensation to shrink water-proof concrete；
(2) Binder Materials, minimum amount 360kg/m are strictly controlled3, research on maximum utilized quantity 480kg/m3；
(3) limit water-cement ratio：Maximum water-cement ratio 0.36；
(4) the maximum chloride ion content in concrete is 0.06%；
(5) preferably use non-alkali active aggregate；When using alkali active aggregate, the maximum alkalinity in concrete is 3.0kg/
m3.And less than the 0.6% of cement weight；
(6) molding temperature≤30 ° are strictly controlled.
The tunnel segment structure of present embodiment includes technical standard, structural material, durability Design requirement, structure design, note
Slurry hole and hole for hoist design, waterproofing design, section of jurisdiction manufacture and splicing accuracy and erection method；After the tunnel segment structure is suitable for first descending
Upper sequence of construction, V levels and VI levels stratum, up and down interval overlapping tunnel spacing 2m～3m conditions, it is each during meeting construction and runing
Plant structure safety and deformation and slip casting synchronization uniformity, tunnel are used under load action water resistance and durability.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and apply this
It is bright.Person skilled in the art obviously easily can make various modifications to above-described embodiment, and described herein
General Principle is applied in other embodiment without through performing creative labour.Therefore, the invention is not restricted to above-described embodiment,
Those skilled in the art's announcement of the invention, the improvement made for the present invention and modification all should be in the protections of the present invention
Within the scope of.
Claims (3)
1. the lining segment structure of the upper and lower interval overlapping shield tunnel of a kind of city underground, including：By multi-ring section of jurisdiction along longitudinal direction spelling
The up shield tunnel chip architecture and descending shield tunnel chip architecture of dress；It is characterized in that：
Each endless tube piece is circumferentially assemblied to form by three calibrated bolcks, two adjacent blocks and the block that binds；Wherein, lower semi-ring by
Three calibrated bolcks are assembled, described to bind block between two adjacent blocks and the mark by two adjacent blocks and lower semi-ring
Quasi- block correspondence is connected to constitute upper semi-ring；
For up shield tunnel chip architecture, it is provided only with each calibrated bolck of its section of jurisdiction, each adjacent block and the block that binds
One hole for hoist；
For descending shield tunnel chip architecture, three holes for hoist, each adjacent block on each calibrated bolck of its section of jurisdiction, are equipped with
On be equipped with a hole for hoist and two injected holes, the block that binds is provided with a hole for hoist；
Described up shield tunnel chip architecture and descending shield tunnel chip architecture are using the staggered joint erection of one group of two ring
Mode；
For descending shield tunnel chip architecture, on described calibrated bolck, between the hole of hole for hoist, angle is 22.5 °；Described is adjacent
Hole for hoist on block leans on middle setting, two injected holes to be respectively arranged on adjacent block two ends；
A diameter of 50mm of described hole for hoist, a diameter of 100mm of injected hole；
For arbitrary endless tube piece, the wherein central angle of calibrated bolck is 67.5 °, and the central angle of adjacent block is 68.75 °, and bind block
Central angle is 20 °；
For arbitrary endless tube piece, its ring and longitudinal direction are with bolts；Described descending shield tunnel chip architecture
Section of jurisdiction adopts M30 types using Reinforcement Design and wherein bolt is strengthened using M36 types in the section of jurisdiction of up shield tunnel chip architecture
Bolt；
With regard to two rings, one group of staggered joint erection mode, wherein the block left avertence from directly over vault that binds of an endless tube piece turns 11.25 °,
Then from directly over vault, right avertence turns 11.25 ° to the block that binds of another endless tube piece.
2. lining segment structure according to claim 1, it is characterised in that：Described hole for hoist doubles as injected hole.
3. lining segment structure according to claim 1, it is characterised in that：The each seam crossing arrangement of described section of jurisdiction ring
Two bolts, longitudinal direction arrange 16 bolts altogether, wherein the block that binds sets one, each adjacent block and calibrated bolck are all provided with three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510066597.4A CN104612711B (en) | 2015-02-09 | 2015-02-09 | Lining segment structure of city subway up-down section overlapping shield tunnels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510066597.4A CN104612711B (en) | 2015-02-09 | 2015-02-09 | Lining segment structure of city subway up-down section overlapping shield tunnels |
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| CN104612711A CN104612711A (en) | 2015-05-13 |
| CN104612711B true CN104612711B (en) | 2017-04-19 |
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| CN105649648B (en) * | 2015-12-29 | 2017-10-31 | 宁波市轨道交通集团有限公司 | The section of jurisdiction attachment structure and its construction method of class rectangle shield tunnel |
| CN105781576A (en) * | 2016-03-24 | 2016-07-20 | 黄河勘测规划设计有限公司 | Parallelogram segment body structure for shield tunneling machine |
| CN105909271B (en) * | 2016-05-31 | 2017-12-22 | 中国科学院武汉岩土力学研究所 | TBM tunnels are light, weigh pipe-plate lining combining structure and its design method |
| CN105909275B (en) * | 2016-06-27 | 2018-06-15 | 中国电建集团成都勘测设计研究院有限公司 | Only starch antiseepage section of jurisdiction and tunnel pipe sheet built structure |
| CN106640122A (en) * | 2016-07-11 | 2017-05-10 | 铁道第三勘察设计院集团有限公司 | Multi-centered round shield tunnel lining |
| CN107435544A (en) * | 2017-05-25 | 2017-12-05 | 中铁十四局集团有限公司 | A kind of construction method of one-tunnel two-tracks composite lining shield tunnel internal structure |
| CN107762530B (en) * | 2017-11-08 | 2019-05-21 | 西南交通大学 | A kind of method of partition of shield tunnel liner ring |
| CN108286445A (en) * | 2018-01-05 | 2018-07-17 | 徐州新通预制构件制造有限公司 | A kind of shield tunnel liner ring |
| CN108225757A (en) * | 2018-01-09 | 2018-06-29 | 上海应用技术大学 | A kind of superimposing thread tunnel influences each other tunnel segment structure mechanical stae field testing procedure |
| CN108590679A (en) * | 2018-04-18 | 2018-09-28 | 重庆建工第七建筑工程有限责任公司 | Utilize the construction method for walking support truck jumbo overlapping tunnel |
| CN108361045A (en) * | 2018-04-23 | 2018-08-03 | 同济大学 | A kind of duct pieces of shield tunnel being adapted to soft soil layer |
| CN109458185B (en) * | 2018-11-22 | 2020-09-01 | 重庆大学 | Construction method for vertically overlapped crossed parallel tunnel shield |
| CN109779655B (en) * | 2019-01-03 | 2020-10-23 | 中铁隧道集团二处有限公司 | Construction method for assembling staggered joints of shield segments |
| CN109723463B (en) * | 2019-03-01 | 2024-03-22 | 中铁工程服务有限公司 | Selection instrument suitable for six piecemeal section of jurisdictions |
| CN110295921A (en) * | 2019-06-26 | 2019-10-01 | 广州穗岩土木科技股份有限公司 | A kind of construction method of shield section grouting and reinforcing |
| CN111594199A (en) * | 2020-05-20 | 2020-08-28 | 中铁二局集团有限公司 | Construction method for wall back backfilling of double-shield TBM |
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| US4497590A (en) * | 1982-03-08 | 1985-02-05 | Crs Group, Inc. | Tunnel lining |
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| CN202866818U (en) * | 2012-08-29 | 2013-04-10 | 中铁二院工程集团有限责任公司 | Shield method tunnel circular prefabricated reinforced concrete lining structure |
| CN203271763U (en) * | 2013-02-07 | 2013-11-06 | 广东省水利电力勘测设计研究院 | Lining segment for sea-crossing shield tunnel |
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| CN204511458U (en) * | 2015-02-09 | 2015-07-29 | 浙江省交通规划设计研究院 | The lining segment structure of overlapping shield tunnel between a kind of city underground upper and lower region |
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Address after: No. 89 round City West Road, Xihu District, Hangzhou, Zhejiang Co-patentee after: Ningbo Institute of Technology, Zhejiang University Patentee after: Zhejiang transportation planning and Design Research Institute Co., Ltd. Address before: No. 89 round City West Road, Xihu District, Hangzhou, Zhejiang Co-patentee before: Ningbo Institute of Technology, Zhejiang University Patentee before: Zhejiang Provincial Plan Design&Research Institute of Communications |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 928, yuhangtang Road, Xihu District, Hangzhou City, Zhejiang Province 310011 Patentee after: Zhejiang shuzhijiaoyuan Technology Co.,Ltd. Patentee after: Zhejiang University of science and engineering Ningbo Address before: 310006 No. 89 West Ring Road, Hangzhou, Zhejiang, Xihu District Patentee before: ZHEJIANG PROVINCIAL INSTITUTE OF COMMUNICATIONS PLANNING DESIGN & RESEARCH Co.,Ltd. Patentee before: Ningbo Institute of Technology, Zhejiang University |