CN103982194A - Method for barrier-free starting of shield tunneling machine - Google Patents
Method for barrier-free starting of shield tunneling machine Download PDFInfo
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- CN103982194A CN103982194A CN201410243934.8A CN201410243934A CN103982194A CN 103982194 A CN103982194 A CN 103982194A CN 201410243934 A CN201410243934 A CN 201410243934A CN 103982194 A CN103982194 A CN 103982194A
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- shield
- steel collar
- tunneling machine
- sealing mechanism
- shield tunneling
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Abstract
The invention provides a method for barrier-free starting of a shield tunneling machine. The method comprises the steps that firstly, a steel lantern ring is installed outside a reserved hole of a retaining structure in a shield well; secondly, a sealing mechanism is installed outside the steel lantern ring, after entering the steel lantern ring, the shield tunneling machine directly cuts a piling wall which is located inside the retaining structure, so that a peripheral cutter arranged at the front end of the shield tunneling machine is far away from the sealing mechanism during rotation, and the seaming mechanism is prevented from being damaged. The method for barrier-free starting of the shield tunneling machine has the advantages that due to the additional arrangement of the steel lantern ring, a rubber curtain plate and a turnover plate of the shield tunneling machine are far away from the periphery cutter of the shield tunneling machine and are in lap joint with a front shielding body when the shield tunneling machine cuts a piling body, an enough safe distance between the rubber curtain plate and the periphery cutter and an enough safe distance between the periphery cutter and the turnover plate are guaranteed, and it is guaranteed that a sealing device is complete; in addition, due to the fact that the starting length is increased, the shield tunneling machine can establish earth pressure as soon as possible, tunneling is facilitated, the construction speed of tunneling is increased, and the safety of tunneling starting is improved; the steel lantern ring can be manufactured in advance according to design requirements before construction, and compared with the method that the thickness of a side wall is increased, a lot of work time is saved; besides, the steel lantern ring can be reusable, so that the construction cost is greatly reduced.
Description
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Technical field
The present invention relates to the method for shield launching in shield tunnel construction, specifically the direct cutting glass fibre reinforced concrete of shield machine and carry out the accessible method starting.May extend to the application of starting of push-bench.
Background technology
Shield tunnel is domestic and international application the most a kind of tunnel piercing method at present, and shield construction is generally divided into three phases, i.e. shield launching, normal driving, reception.Referring to Fig. 1 and Fig. 2, subway station or shield structure well 10(are positioned at ground below 12 at present) be the necessary condition of shield launching and reception, shield machine 8 start with arrive and pass through before must abolish end well space enclosing structure 3 inner sides at hole its region 14 use glass fiber muscle corresponding to shield machine 8 front ends of reinforced concrete pile body of wall 13(replace reinforcing bars), in abolishing process, exist larger construction safety risk and duration longer, as the stratum, outside after abolishing directly exposes, be prone to water burst and cave in, cause stratum settlement around, even landslide, and then cause shield structure normally to start and receive etc.Station as logical in Line of Nanjing Subway unit, workman in 2007 is when cutting off place, hole supporting and protection structure reinforcing bar, and the soil body caves in suddenly, and Sand phenomenon occurs, and causes ground gross distortion to subside, and the length of subsiding reaches 150m; Such accident is too numerous to enumerate, and such accident all appearred in the areas such as Shanghai, Changsha, Tianjin.Seeking a kind of method that can utilize shield cutter directly to cut is the problem of pendulum in face of engineers and technicians.Glass fiber muscle (Glass Fiber Reinforced Polymer Rebar), is called for short GFRP, is a kind of glass fibre reinforced composion, by glass fiber and resin, through heat, is merged and forms, and can be processed into the form the same with reinforcing bar and size.Compare with reinforcing bar, GFRP muscle has that tensile strength is high, lightweight, can cutting good, corrosion resistance is good, heat conduction and the advantage such as electrical conduction ability is low, can be used for replacing under many circumstances plain bars.The region 14 of passing at shield machine 8 adopts after glass fiber muscle Part Substitution reinforcing bars, and shield machine 8 can directly cut piling wall body, and sets up soil pressure, and shield structure is reinforced in a small amount of termination and the not safety construction of starting under precipitation condition.
After application glass fiber muscle Part Substitution reinforcing bar there are some problems in shield launching, referring to Fig. 2, during shield structure cutting fender post body of wall 14, the turnover panel 5 of portal sealing mechanism and rubber curtain plate 6 are still overlapped on periphery cutter 7, periphery cutter 7 can damage turnover panel 5 and rubber curtain plate 6, directly affects the sealing effectiveness of sealing device.
Summary of the invention
The object of this invention is to provide a kind of shield machine and carry out the accessible householder method starting, to solve that shield machine cutter that prior art exists damages sealing device and the problem that causes engineering accident.
Technical scheme of the present invention is: a kind of accessible method starting of shield machine, it is characterized in that, first a steel collar is installed in the outside of the reserved opening of the space enclosing structure in shield structure well, then in the outside of steel collar, sealing mechanism is installed, shield machine directly cuts the piling wall body that is positioned at space enclosing structure inner side after entering steel collar, make the periphery cutter of shield machine front end leave sealing mechanism when rotating, avoid the damage of sealing mechanism.
Described steel collar is identical with the shape and size of described reserved opening, between the inner side of steel collar and space enclosing structure, is provided with backing plate, and three is with bolts.
The piling wall body that is positioned at described place, hole is the glass fiber reinforced concrete that is easy to cutting, and the piling wall body of other parts is reinforced concrete structure.
Described steel collar section configuration is rectangle, adopts the high-quality steel that thickness is 20mm to make, and its strength and stiffness all should reach designing requirement; The length of this steel collar is 400 ~ 800mm, should meet rubber curtain plate end and be not less than 200mm to the safe distance of periphery cutter.
Described sealing mechanism is comprised of rubber cord, Circular Plate, turnover panel and bearing pin, continues to use bearing pin and connect a plurality of turnover panels in Circular Plate, in the inner side of turnover panel (in the face of a side of shield machine direction of advance), rubber curtain plate is housed.
Comprise following concrete construction process: processing and fabricating steel collar and backing plate → installation fixedly backing plate → accessible starting of installation steel collar → installation sealing mechanism → inspection installation quality → shield structure → remove steel loop and backing plate and reuse.
Beneficial effect of the present invention is: when adding steel collar and can realize shield structure cutting pile body, rubber curtain plate and turnover panel leave the periphery cutter of cutterhead, snap on shield structure precursor, and assurance has enough safe distances with periphery cutter assurance sealing device intact; Owing to having increased the length that starts, can make shield machine set up as early as possible soil pressure in addition, be beneficial to driving, not only can accelerate the speed of application of shield structure, and greatly improve the safety of shield launching; Steel collar can be made in advance according to designing requirement before construction, compares the method for increase side wall thicknesses and has saved the extensive work time, and steel collar can be reused simultaneously, significantly reduces engineering cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing shield launching;
Fig. 2 is the partial enlarged drawing (destroying the schematic diagram of sealing device during shield launching) of Fig. 1;
Fig. 3 is the structural representation (adding extension steel collar) of shield launching of the present invention;
Fig. 4 is the partial enlarged drawing (the mounting structure schematic diagrames of steel collar both sides) of Fig. 3;
Fig. 5 is the partial plan layout (the A-A sectional view of Fig. 4) of backing plate of the present invention;
Fig. 6 is the another kind of connected mode of steel collar of the present invention and space enclosing structure.
The specific embodiment
Referring to Fig. 3-Fig. 6, the accessible method starting of a kind of shield machine of the present invention, first a steel collar 2 is installed in the outside of the reserved opening of the space enclosing structure 3 in shield structure well, then in the outside of steel collar 2, sealing mechanism (Circular Plate 1, turnover panel 5 and rubber curtain plate 6) is installed, shield machine 8 enters the glass fiber reinforced concrete region 14 that the rear direct cutting of steel collar 2 is positioned at the reinforced concrete pile body of wall 13 of space enclosing structure 3 inner sides, make the periphery cutter 7 of shield machine 8 front ends leave sealing mechanism when rotating, avoid the damage of turnover panel 5 and the rubber curtain plate 6 of sealing mechanism.The periphery cutter 7 of shield machine can directly cut piling wall body after entering steel collar 2, and sets up soil pressure, and shield structure is reinforced in a small amount of termination and the not safety construction of starting under precipitation condition.
Described steel collar 2 is identical with the shape and size of described reserved opening, between the inner side of steel collar 2 and space enclosing structure 3 by backing plate 9 and adopt bolt 4 or 11 to be interconnected and fixed.
Described sealing mechanism is comprised of rubber curtain plate 6, Circular Plate 1, turnover panel 5 and bearing pin, in Circular Plate 1, continue to use bearing pin and connect a plurality of turnover panels 5, in the inner side of turnover panel 5 (in the face of a side of shield machine 8 directions of advance), its outer part of rubber curtain plate 6(is housed and is clipped between Circular Plate 1 and steel collar 2, fixing with bolt 4).
The present invention more specifically construction process is: processing and fabricating steel collar 2 and backing plate 9 → installation fixedly backing plate → accessible starting of installation steel collar → installation sealing mechanism → inspection installation quality → shield structure → remove steel loop and backing plate and reuse.
The present invention adds extension steel collar 2 between the space enclosing structure 3 at Circular Plate 1 and hole, make the turnover panel 5 of sealing mechanism and rubber curtain plate 6 away from periphery cutter 7, during shield launching cutting fender post 3, avoided the infringement to sealing mechanism, between steel collar 2 and Circular Plate 1, enclosed structure 3, all adopt bolt 4 to be connected, pitch of bolts is 50-100mm.
Between steel collar 8 and enclosed structure 3, add backing plate 9, on backing plate 9 and enclosed structure 3, reserved row's bolt hole 91, is connected and fixed steel collar 8, backing plate 9 and enclosed structure 3 by row's bolt 4.
In Fig. 4, steel collar 2 adopts respectively long bolt 4 to be fixedly connected with enclosed structure 3 through steel collar 2 with Circular Plate 1 and backing plate 9.Can also adopt the fixed form of Fig. 6, in the outer, inner side of steel collar 2, be provided with outward flange (similar flange), with bolt 11, through this outward flange, be fixedly connected with maintenance mechanism 3 with backing plate 9.
Claims (6)
1. the accessible method starting of shield machine, it is characterized in that, first a steel collar is installed in the outside of the reserved opening of the space enclosing structure in shield structure well, then in the outside of steel collar, sealing mechanism is installed, shield machine directly cuts the piling wall body that is positioned at space enclosing structure inner side after entering steel collar, make the periphery cutter of shield machine front end leave sealing mechanism when rotating, avoid the damage of sealing mechanism.
2. the accessible method starting of shield machine according to claim 1, is characterized in that, described steel collar is identical with the shape and size of described reserved opening, between the inner side of steel collar and space enclosing structure, is provided with backing plate, and three is with bolts.
3. the accessible method starting of shield machine according to claim 1, is characterized in that, the piling wall body that is positioned at described place, hole is the glass fiber reinforced concrete that is easy to cutting, and the piling wall body of other parts is reinforced concrete structure.
4. extension steel collar according to claim 1, is characterized in that, described steel collar section configuration is rectangle, adopts the high-quality steel that thickness is 20mm to make, and its strength and stiffness all should reach designing requirement; The length of this steel collar is 400 ~ 800mm, should meet rubber curtain plate end and be not less than 200mm to the safe distance of periphery cutter.
5. sealing mechanism according to claim 1, it is characterized in that, described sealing mechanism is comprised of rubber cord, Circular Plate, turnover panel and bearing pin, continues to use bearing pin and connect a plurality of turnover panels in Circular Plate, in the inner side of turnover panel (in the face of a side of shield machine direction of advance), rubber curtain plate is housed.
6. the accessible method starting of shield machine according to claim 1, it is characterized in that, comprise following concrete construction process: processing and fabricating steel collar and backing plate → installation fixedly backing plate → accessible starting of installation steel collar → installation sealing mechanism → inspection installation quality → shield structure → remove steel loop and backing plate and reuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243934.8A CN103982194A (en) | 2014-06-04 | 2014-06-04 | Method for barrier-free starting of shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243934.8A CN103982194A (en) | 2014-06-04 | 2014-06-04 | Method for barrier-free starting of shield tunneling machine |
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| CN103982194A true CN103982194A (en) | 2014-08-13 |
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| CN201410243934.8A Pending CN103982194A (en) | 2014-06-04 | 2014-06-04 | Method for barrier-free starting of shield tunneling machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736003A (en) * | 2016-01-29 | 2016-07-06 | 济南轨道交通集团有限公司 | Structure of shield launching portal and shield launching construction method |
| CN109667601A (en) * | 2017-10-17 | 2019-04-23 | 北京建工路桥集团有限公司 | A kind of construction method that glass fibre main reinforcement portal is originated with steel bushing and off-axis line |
| CN111677518A (en) * | 2020-07-08 | 2020-09-18 | 北京建工土木工程有限公司 | Shield receiving end reinforcing structure, reinforcing method and shield receiving method |
| CN113482624A (en) * | 2021-06-30 | 2021-10-08 | 江苏旭睿重工科技有限公司 | Construction method for directly starting and arriving shield by using electric erosion pile core |
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| CN1995700A (en) * | 2006-12-30 | 2007-07-11 | 广东省基础工程公司 | Shield launching construction method |
| JP2010031485A (en) * | 2008-07-25 | 2010-02-12 | Taisei Corp | Method of joining shield tunnel and vertical shaft |
| JP2011241639A (en) * | 2010-05-20 | 2011-12-01 | Kajima Corp | Junction structure of vertical shaft mouth part |
| CN203008925U (en) * | 2012-08-17 | 2013-06-19 | 北京市政建设集团有限责任公司 | Shield barrier-free launching apparatus |
| CN103266898A (en) * | 2013-04-26 | 2013-08-28 | 中交第二航务工程局有限公司 | Shield tunnel portal sealing device and shield tunnel portal sealing method |
| CN203420713U (en) * | 2013-07-15 | 2014-02-05 | 中铁十三局集团有限公司 | Shield launching tunnel portal extension steel ring |
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2014
- 2014-06-04 CN CN201410243934.8A patent/CN103982194A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1995700A (en) * | 2006-12-30 | 2007-07-11 | 广东省基础工程公司 | Shield launching construction method |
| JP2010031485A (en) * | 2008-07-25 | 2010-02-12 | Taisei Corp | Method of joining shield tunnel and vertical shaft |
| JP2011241639A (en) * | 2010-05-20 | 2011-12-01 | Kajima Corp | Junction structure of vertical shaft mouth part |
| CN203008925U (en) * | 2012-08-17 | 2013-06-19 | 北京市政建设集团有限责任公司 | Shield barrier-free launching apparatus |
| CN103266898A (en) * | 2013-04-26 | 2013-08-28 | 中交第二航务工程局有限公司 | Shield tunnel portal sealing device and shield tunnel portal sealing method |
| CN203420713U (en) * | 2013-07-15 | 2014-02-05 | 中铁十三局集团有限公司 | Shield launching tunnel portal extension steel ring |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736003A (en) * | 2016-01-29 | 2016-07-06 | 济南轨道交通集团有限公司 | Structure of shield launching portal and shield launching construction method |
| CN105736003B (en) * | 2016-01-29 | 2018-02-06 | 济南轨道交通集团有限公司 | A kind of structure of shield launching portal and the construction method of shield launching |
| CN109667601A (en) * | 2017-10-17 | 2019-04-23 | 北京建工路桥集团有限公司 | A kind of construction method that glass fibre main reinforcement portal is originated with steel bushing and off-axis line |
| CN111677518A (en) * | 2020-07-08 | 2020-09-18 | 北京建工土木工程有限公司 | Shield receiving end reinforcing structure, reinforcing method and shield receiving method |
| CN113482624A (en) * | 2021-06-30 | 2021-10-08 | 江苏旭睿重工科技有限公司 | Construction method for directly starting and arriving shield by using electric erosion pile core |
| CN113482624B (en) * | 2021-06-30 | 2023-03-07 | 江苏旭睿重工科技有限公司 | Construction method for directly starting and arriving shield by using electric erosion pile core |
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Application publication date: 20140813 |