CN102767376A - Shield balanced launching and arriving construction method - Google Patents
Shield balanced launching and arriving construction method Download PDFInfo
- Publication number
- CN102767376A CN102767376A CN2012101685327A CN201210168532A CN102767376A CN 102767376 A CN102767376 A CN 102767376A CN 2012101685327 A CN2012101685327 A CN 2012101685327A CN 201210168532 A CN201210168532 A CN 201210168532A CN 102767376 A CN102767376 A CN 102767376A
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- shield
- construction
- space enclosing
- portal
- enclosing structure
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Abstract
The invention discloses a shield balanced launching and arriving construction method. According to the shield balanced launching and arriving construction method, glass fibers are used for connecting a building enclosure during the construction of the building enclosure, and are directly cut during the excavation of a shield machine, so that the construction risk during the shield launching and arriving construction is effectively avoided, and more effective guarantee is provided during the shield closed launching and arriving construction, and the method is applied to the field of building construction.
Description
Technical field
The present invention relates to a kind of construction techniques, particularly relate to the job practices that a kind of shield structure balance starts and arrives.
Background technology
Shield construction be a kind of use shield machine at underground driving, when preventing the avalanche of soft ground excavation face or keeping the excavation face stable, in machine, carry out excavation and lining cutting operation a kind of in tunnel safely in the bored tunnel job practices.Shield launching is the work progress that the shield structure begins to tunnel, and the shield structure arrives and is meant that the shield structure arrives the work progress of receiving position.Now great majority adopt is conventional shield launching and arrive construction technology, and the part object of construction production adopts shield structure closed origin and arrives starting and arriving construction technology of device.
Conventional shield launching and arrival technology are meant before shield driving the portal termination are taked to handle; Reinforce that soft stratum, portal cut, shield launching and receive the measures such as the installing of Design and Machining, location and installation, support system, portal ring, shield machine assembly and disassembly of pedestal, thereby guarantee the construction technology that shield-tunneling construction can tunnel and arrive according to the Tunnel Design axis.
Starting and arriving construction technology of employing shield structure closed origin and arrival device is before shield driving, part or a small amount of the reinforcing to be carried out in the portal termination; In shield launching, arrival well, shield structure closed origin is installed and is arrived device; With the steel concrete space enclosing structure in the portal scope cut replace with the cement mortar wall after, shield machine the device in start or arrive the driving to the device in.
Above-mentioned two kinds of shield launchings and arrival form of construction work all need carry out making the inside and outside water and soil pressure of portal be in nonequilibrium condition after the termination reinforces and cut portal.Carry out the termination and reinforce, increase working procedure, strengthen construction cost, and consolidation effect is difficult to guarantee, for shield launching and arrival have stayed uncontrollable potential safety hazard; Cut the inside and outside water and soil of portal to be pressed be in nonequilibrium condition and be prone to cause the portal water burst, gush defectives such as sand and surface collapse,, will jeopardize foundation ditch, tunnel even public safety in case the portal water burst occurs, gush sand, the situation of surface collapse.
Summary of the invention
For addressing the above problem, but the present invention provides a kind of shield launching of better guarantee construction safety and arrives job practices.
The technical solution adopted for the present invention to solve the technical problems is:
The job practices that a kind of shield structure balance starts and arrives is characterized in that,
Wherein the job practices that starts of shield structure balance may further comprise the steps:
1) glass fiber is installed and carries out the space enclosing structure construction in space enclosing structure portal width of cloth space enclosing structure;
2) cut the concrete cover of said space enclosing structure around the portal circumference, confirm not have reinforcing bar in the portal space enclosing structure scope;
3) install the shield launching device or and shield machine;
4) filler carries out airtight shutoff in the shield structure closed origin device;
5) shield machine tunneling construction to shield machine is accomplished headwork;
6) disassemble shield structure closed origin and perhaps arrive device;
The method that shield structure balance arrives may further comprise the steps:
1) glass fiber is installed and carries out the space enclosing structure construction in space enclosing structure portal width of cloth space enclosing structure;
2) cut the concrete cover of said space enclosing structure around the portal circumference, confirm not have reinforcing bar in the portal space enclosing structure scope;
3) shield launching device and shield machine are installed, the steel bushing to the shield machine in-position carries out voltage-withstand test simultaneously;
4) filler carries out airtight shutoff in the shield structure closed origin device;
5) shield machine tunneling construction to shield machine is accomplished headwork;
6) disassemble shield structure closed origin and perhaps arrive device.
Further as the preferred embodiment of the present invention, arrive in the construction in shield structure balance, carry out in the said step 4) being provided with steel bushing in the receiving system of filler.
Further as the preferred embodiment of the present invention, shield structure balance arrives carries out in the step 6) of construction carrying out the pressure release operation earlier before the airtight arrival device of shield structure disassembles.
Beneficial effect of the present invention: this shield structure balance starts and the arrival method has adopted glass fiber to carry out the connection of space enclosing structure when carrying out the space enclosing structure construction; Glass fiber can directly be cut in the shield machine tunneling process; Can effectively dissolve shield launching and arrive the construction risk in the work progress, in shield machine closed origin and arrival work progress, more effective guarantee to be provided.
The specific embodiment
The job practices that the present invention starts and arrives for a kind of shield structure balance.
Wherein the job practices that starts of shield structure balance may further comprise the steps:
1) glass fiber is installed and carries out the space enclosing structure construction in space enclosing structure portal width of cloth space enclosing structure;
2) cut the concrete cover of said space enclosing structure around the portal circumference, confirm not have reinforcing bar in the portal space enclosing structure scope;
3) install the shield launching device or and shield machine;
4) filler carries out airtight shutoff in the shield structure closed origin device;
5) shield machine tunneling construction to shield machine is accomplished headwork;
6) disassemble shield structure closed origin and perhaps arrive device.
The method that shield structure balance arrives may further comprise the steps:
1) glass fiber is installed and carries out the space enclosing structure construction in space enclosing structure portal width of cloth space enclosing structure;
2) cut the concrete cover of said space enclosing structure around the portal circumference, confirm not have reinforcing bar in the portal space enclosing structure scope;
3) shield launching device and shield machine are installed, the steel bushing to the shield machine in-position carries out voltage-withstand test simultaneously;
4) filler carries out airtight shutoff in the shield structure closed origin device;
5) shield machine tunneling construction to shield machine is accomplished headwork;
6) disassemble shield structure closed origin and perhaps arrive device.
This shield structure balance starts and the arrival method has adopted glass fiber to carry out the connection of space enclosing structure when carrying out the space enclosing structure construction; Glass fiber can directly be cut in the shield machine tunneling process; Can effectively dissolve shield launching and arrive the construction risk in the work progress, in shield machine closed origin and arrival work progress, more effective guarantee to be provided.
As the improvement of technical scheme of the present invention, arrive in the construction in shield structure balance, carry out in the said step 4) being provided with steel bushing in the receiving system of filler.
As the improvement of technical scheme of the present invention, shield structure balance arrives carries out in the step 6) of construction carrying out the pressure release operation earlier before the airtight arrival device of shield structure disassembles.
Employing glass fiber muscle in the portal space enclosing structure scope substitutes reinforcing bar, according to construction experience, possibly have error when space enclosing structure grooving and reinforcing cage are transferred, and needs portal glass fiber muscle scope is confirmed.
Knife cutting is to space enclosing structure reinforcing bar or i iron joint when preventing shield launching and arriving construction; Cause cutterhead to damage or the safety of foundation ditch is threatened; The related datas such as top absolute altitude of grooving record and reinforcing cage when earlier receiving the construction of portal space enclosing structure groove section with bright construction party are with the anti-clear distance that pushes away shield launching and arrive cutterhead and i iron and vertical direction reinforcing bar when constructing.Then, the portal circumference is cut the concrete cover of space enclosing structure in the some position of four directrixes up and down,, confirm whether the portal scope exists reinforcing bar until exposing reinforcing bar.As find after four directrix point positions cut concrete cover the phenomenon that has reinforcing bar is arranged, and then near the some position the reply is checked, and the scope of affirmation reinforcing bar intrusion portal, length etc. so that in time finely tune the shield driving parameter, are guaranteed the safe, smooth of shield launching.
In the work progress, shield structure closed origin device is installed in the shield launching well, the airtight arrival device of shield structure perhaps is installed in the shield structure arrives well; When performing the side wall of station space enclosing structure, pre-buried small sleeve in the portal scope, assembling shield machine in device; And the front end cylindrical shell of shield structure closed origin device or the airtight arrival device of shield structure is connected with small sleeve; Employing is welded to connect, and weld seam cooling back butt welded seam carries out nondestructive inspection and detects, and guarantees weldquality.When shield launching perhaps arrived, the attachment weld of closed origin device and airtight arrival device and small sleeve was stressed weak spot, needed in the weld seam junction be provided with dial gage all around, the change in displacement of monitoring weld seam.For guaranteeing the sealing effectiveness of negative endless tube sheet and counter-force adjusting device junction; After installing negative first, second endless tube sheet of ring; In shield structure closed origin device and airtight arrival device, fill water-tight concrete through feeding port, forming one thickness is 50cm, and length is the impervious wall of 50cm.
After impervious wall construction is accomplished, toward shield structure closed origin device and airtight arrival device in, fill silt particle through feeding port, fill closely knitly, simulate soil layer.In the filler process in order filler to be delivered in the airtight receiving system of shield structure; Need draw on conveyance conduit to a shield structure closed origin device or the airtight arrival device from ground; Adopt a pipeline to connect; Ground is provided with a funnel, with filler directly in funnel to shield structure closed origin device or airtight arrival device.For with in the shield structure closed origin device or the silt particle in the airtight arrival device closely knit evenly, to fill respectively at three stuffing holes in the filler process, guarantee distributed uniform, filling process carries out stage by stage.If carry when smooth and easy inadequately, can adopt the bath mode in the filler process, filler is swept away, water get in the shield structure closed origin device or in the airtight arrival device with after filler mixes, can also play the effect that filler is closely knit.
Tunnel according to parameters such as the driving speed of setting, moments of torsion, and adopt the information law construction, in time adjust boring parameter, in shield launching and the arrival tunneling process, the head of shield machine is slightly uptrending, guarantees that the situation of kowtowing does not appear in shield machine.Advance in the process of perhaps appearing in the hole at shield machine; The biliquid slurry that shield endnote slurry adopts water glass and cement mortar to form; The operation of shield endnote slurry is controlled by shield endnote slurry pressure; Guarantee that the gap filling between shield structure closed origin device or airtight arrival device and the section of jurisdiction is closely knit, strengthen measuring monitoring and guarantee that shield launching advances the construction safety in hole.
After shield machine is accomplished the section of starting or arrived the driving of section, carry out all or part of steel bushing of disassembling according to the construction needs.
Certainly; The invention is not limited to above-mentioned embodiment; Those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite of spirit of the present invention, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (3)
1. the job practices that shield structure balance starts and arrives is characterized in that,
Wherein the job practices that starts of shield structure balance may further comprise the steps:
1) glass fiber is installed and carries out the space enclosing structure construction in space enclosing structure portal width of cloth space enclosing structure;
2) cut the concrete cover of said space enclosing structure around the portal circumference, confirm not have reinforcing bar in the portal space enclosing structure scope;
3) install the shield launching device or and shield machine;
4) filler carries out airtight shutoff in the shield structure closed origin device;
5) shield machine tunneling construction to shield machine is accomplished headwork;
6) disassemble shield structure closed origin and perhaps arrive device;
The method that shield structure balance arrives may further comprise the steps:
1) glass fiber is installed and carries out the space enclosing structure construction in space enclosing structure portal width of cloth space enclosing structure;
2) cut the concrete cover of said space enclosing structure around the portal circumference, confirm not have reinforcing bar in the portal space enclosing structure scope;
3) shield launching device and shield machine are installed, the steel bushing to the shield machine in-position carries out voltage-withstand test simultaneously;
4) filler carries out airtight shutoff in the shield structure closed origin device;
5) shield machine tunneling construction to shield machine is accomplished headwork;
6) disassemble shield structure closed origin and perhaps arrive device.
2. the job practices that shield structure balance according to claim 1 starts and arrives is characterized in that: arrive in the construction in shield structure balance, carry out in the said step 4) being provided with steel bushing in the receiving system of filler.
3. the job practices that shield structure balance according to claim 1 starts and arrives is characterized in that: said shield structure balance arrives carries out in the step 6) of construction carrying out the pressure release operation earlier before the airtight arrival device of shield structure disassembles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101685327A CN102767376A (en) | 2012-05-28 | 2012-05-28 | Shield balanced launching and arriving construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101685327A CN102767376A (en) | 2012-05-28 | 2012-05-28 | Shield balanced launching and arriving construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102767376A true CN102767376A (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101685327A Pending CN102767376A (en) | 2012-05-28 | 2012-05-28 | Shield balanced launching and arriving construction method |
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| CN (1) | CN102767376A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643961A (en) * | 2013-12-04 | 2014-03-19 | 中国水电顾问集团华东勘测设计研究院有限公司 | End-free reinforcing shield receiving structure and receiving method |
| CN103899325A (en) * | 2014-04-23 | 2014-07-02 | 上海隧道工程股份有限公司 | Construction method for shield machine to enter hole to receive concrete box |
| CN104047607A (en) * | 2013-03-14 | 2014-09-17 | 上海市城市建设设计研究总院 | Construction method for lifting out shield tunneling machine under condition of envelop enclosure |
| CN112324444A (en) * | 2020-11-27 | 2021-02-05 | 中建八局轨道交通建设有限公司 | Shield large-gradient starting construction method |
Citations (5)
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| JPH1037690A (en) * | 1996-07-19 | 1998-02-10 | Tekken Constr Co Ltd | Lining structure of tunnel and execution method thereof |
| JP2003239679A (en) * | 2002-02-15 | 2003-08-27 | Nippon Steel Composite Co Ltd | Fiber-reinforced concrete wall body for shield driving |
| JP2007154537A (en) * | 2005-12-06 | 2007-06-21 | Nippon Steel Composite Co Ltd | Cuttable fiber-reinforced resin-made segment and wall body of shield tunnel |
| CN102022118A (en) * | 2010-12-15 | 2011-04-20 | 广东华隧建设股份有限公司 | Method for realizing balanced arrival of shield machine |
| CN102022119A (en) * | 2010-12-15 | 2011-04-20 | 广东华隧建设股份有限公司 | Shield machine balance originating method |
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2012
- 2012-05-28 CN CN2012101685327A patent/CN102767376A/en active Pending
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| JPH1037690A (en) * | 1996-07-19 | 1998-02-10 | Tekken Constr Co Ltd | Lining structure of tunnel and execution method thereof |
| JP2003239679A (en) * | 2002-02-15 | 2003-08-27 | Nippon Steel Composite Co Ltd | Fiber-reinforced concrete wall body for shield driving |
| JP2007154537A (en) * | 2005-12-06 | 2007-06-21 | Nippon Steel Composite Co Ltd | Cuttable fiber-reinforced resin-made segment and wall body of shield tunnel |
| CN102022118A (en) * | 2010-12-15 | 2011-04-20 | 广东华隧建设股份有限公司 | Method for realizing balanced arrival of shield machine |
| CN102022119A (en) * | 2010-12-15 | 2011-04-20 | 广东华隧建设股份有限公司 | Shield machine balance originating method |
Non-Patent Citations (5)
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| 张恒等: "玻璃纤维筋在盾构井围护结构中的应用研究", 《铁道标准设计》, 31 March 2011 (2011-03-31) * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047607A (en) * | 2013-03-14 | 2014-09-17 | 上海市城市建设设计研究总院 | Construction method for lifting out shield tunneling machine under condition of envelop enclosure |
| CN104047607B (en) * | 2013-03-14 | 2016-04-13 | 上海市城市建设设计研究总院 | Engineering method is hung out under shield machine space enclosing structure condition |
| CN103643961A (en) * | 2013-12-04 | 2014-03-19 | 中国水电顾问集团华东勘测设计研究院有限公司 | End-free reinforcing shield receiving structure and receiving method |
| CN103899325A (en) * | 2014-04-23 | 2014-07-02 | 上海隧道工程股份有限公司 | Construction method for shield machine to enter hole to receive concrete box |
| CN103899325B (en) * | 2014-04-23 | 2016-04-13 | 上海隧道工程有限公司 | The construction method that concrete casing shield receives |
| CN112324444A (en) * | 2020-11-27 | 2021-02-05 | 中建八局轨道交通建设有限公司 | Shield large-gradient starting construction method |
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Application publication date: 20121107 |