CN103711495A - Support-free and partial-segment-free shield launching method for subsurface excavated tunnel - Google Patents
Support-free and partial-segment-free shield launching method for subsurface excavated tunnel Download PDFInfo
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- CN103711495A CN103711495A CN201310723095.5A CN201310723095A CN103711495A CN 103711495 A CN103711495 A CN 103711495A CN 201310723095 A CN201310723095 A CN 201310723095A CN 103711495 A CN103711495 A CN 103711495A
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Abstract
The invention provides a support-free and partial-segment-free shield launching method for a subsurface excavated tunnel, and belongs to the technical field of civil engineering construction. The method includes the steps of firstly, constructing the shield launching section of the tunnel through subsurface excavation method; secondly, constructing a reinforced concrete guide table along the axis of the tunnel; thirdly, installing guide rails; fourthly, moving a main machine of a shield tunneling machine to the launching position along the guide rails; fifthly, constructing a counter-force ring; sixthly, fine adjusting the shielding axial direction; seventhly, conducting launching. The method has the advantages that launching counter force can be provided for the shield tunneling machine on the premise that an existing structure is not damaged, and damage to the existing structure is reduced to the maximum degree; the counter force is provided for the shield tunneling machine through the reinforced concrete ring, and the cost is low; the structure is simple, and the operation is convenient. According to the method, the design and the structure are simple, and the operation is convenient.
Description
Technical field
The invention belongs to engineering construction technology field.
Background technology
At present, China's underground engineering construction has entered the develop rapidly phase, conventional construction method and engineering safety, quality, the contradiction of progress, and shield construction due to integrated application computer, automation, machinery, new material, new and high technology in the fields such as systematic science, and by remote control, the advanced persons' such as laser guidance electronic information technology is carried out overall monitor to work progress, in safety, quality, the aspects such as progress are compared with the obvious advantage with conventional construction method, for this reason, the current Yi Shi of shield construction state, the first-selected technique of inside and outside each metropolis construction of subway.
The impact that shield construction is divided by construction technology and bid section, in work progress, technique on shield machine's station-crossing starts and tune is started and often had generation, and generally shield launching is to utilize start bracket, support or negative endless tube sheet to start.But if shield machine starts in the station completing in advance or in bored tunnel, there is pre-buried reaction frame and the problems such as component operation inconvenience, constructional difficulties such as bracket that start.
Summary of the invention
The object of the invention is: provide a kind of bored tunnel without bearing, to encircle shield launching method without support, it can solve the originating issue of shield machine in bored tunnel quickly and easily.
Method of the present invention is:
1, adopt hidden construction process construction shield launching section tunnel;
2, along tunnel axis construction reinforced bar concrete, lead platform, and pre-buried guide rail and fine setting backing plate, on pre-buried steel plate, weld very heavy support in bored tunnel, on shield machine welding steel, by the method for jack pushing tow, make shield machine enter hole, and injection face;
3, shield machine main frame moves to originating location along guide rail, and shield machine main frame is moved to originating location along guide rail; Longitudinal prefabricated reinforced concrete counter-force ring in tunnel, in the scope that counter-force ring is 1.5 meters, secondary lining is not first done, pre-buried concrete counter-force ring reinforcing bar.Shield machine enters hole and arrives after face, then applies concrete counter-force ring, and concrete counter-force ring and secondary lining become integral body;
4, apply steel concrete counter-force ring, longitudinal prefabricated reinforced concrete counter-force ring in tunnel, in the scope that counter-force ring is 1.5 meters, secondary lining is not first done, pre-buried concrete counter-force ring reinforcing bar.Shield machine enters hole and arrives after face, then applies concrete counter-force ring, and concrete counter-force ring and secondary lining become integral body;
5, fine setting shield structure is axial;
6, start, utilize the jack support top steel concrete counter-force ring that shield machine carries to complete shield machine starting in bored tunnel.
Counter-force ring is steel concrete circular ring, the thick 1.5-2.0m of annulus, the poor 0.90-1.1m in inside and outside footpath.
The invention has the beneficial effects as follows: 1. this invention can, for shield machine provides the counter-force that starts under the prerequisite of not destroying existing buildings, reduce the destruction to existing buildings to greatest extent; 2. this invention utilizes steel concrete ring to provide counter-force for shield launching, with low cost; 3. simple in structure, easy to operate.Project organization of the present invention is simple, easy to operate.
Accompanying drawing explanation
Fig. 1 shield machine main sectional view that starts in bored tunnel;
Fig. 2 B-B sectional drawing.
The specific embodiment
Embodiment 1
As shown in the figure, the 1st, shield machine, the 2nd, leads platform, the 3rd, guide rail, the 4th, fine setting backing plate, the 5th, counter-force ring, the 6th, stabilization zone.
(1) hidden construction process construction tunnel;
(2) apply steel concrete and lead platform, and pre-buried guide rail and fine setting backing plate.The welding steel by welding very heavy support on steel plate pre-buried in bored tunnel, on shield machine, makes shield machine enter hole by the method for jack pushing tow, and injection face;
(3) before excavation, the soil body within the scope of face is carried out to grouting and reinforcing;
(4) longitudinal prefabricated reinforced concrete counter-force ring in tunnel, in the scope that counter-force ring is 1.5 meters, secondary lining is not first done, pre-buried concrete counter-force ring reinforcing bar.Shield machine enters hole and arrives after face, then applies concrete counter-force ring, and concrete counter-force ring and secondary lining become integral body;
(5) utilize jack and fine setting backing plate to adjust the axial orientation of shield machine;
(6) utilize the jack support top steel concrete counter-force ring that shield machine carries to complete shield machine starting in bored tunnel.
Claims (2)
1. bored tunnel is without support without a negative ring shield launching method, and its method is:
A, employing hidden construction process construction shield launching section tunnel;
B, along tunnel axis construction reinforced bar concrete, lead platform, and pre-buried guide rail and fine setting backing plate, in bored tunnel, on pre-buried steel plate, weld very heavy support, on shield machine welding steel, by the method for jack pushing tow, make shield machine enter hole, and injection face;
C, shield machine main frame move to originating location along guide rail, and shield machine main frame is moved to originating location along guide rail; Longitudinal prefabricated reinforced concrete counter-force ring in tunnel, in the scope that counter-force ring is 1.5 meters, secondary lining is not first done, pre-buried concrete counter-force ring reinforcing bar; Shield machine enters hole and arrives after face, then applies concrete counter-force ring, and concrete counter-force ring and secondary lining become integral body;
D, apply steel concrete counter-force ring, longitudinal prefabricated reinforced concrete counter-force ring in tunnel, in the scope that counter-force ring is 1.5 meters, secondary lining is not first done, pre-buried concrete counter-force ring reinforcing bar; Shield machine enters hole and arrives after face, then applies concrete counter-force ring, and concrete counter-force ring and secondary lining become integral body;
E, fine setting shield structure are axial;
F, start, utilize the jack support top steel concrete counter-force ring that shield machine carries to complete shield machine starting in bored tunnel.
2. a kind of bored tunnel as claimed in claim 1 is without support without negative ring shield launching method, and its method is: counter-force ring is steel concrete circular ring, the thick 1.5-2.0m of annulus, the poor 0.90-1.1m in inside and outside footpath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310723095.5A CN103711495A (en) | 2013-12-25 | 2013-12-25 | Support-free and partial-segment-free shield launching method for subsurface excavated tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310723095.5A CN103711495A (en) | 2013-12-25 | 2013-12-25 | Support-free and partial-segment-free shield launching method for subsurface excavated tunnel |
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| CN103711495A true CN103711495A (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310723095.5A Pending CN103711495A (en) | 2013-12-25 | 2013-12-25 | Support-free and partial-segment-free shield launching method for subsurface excavated tunnel |
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| CN (1) | CN103711495A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074526A (en) * | 2014-06-19 | 2014-10-01 | 中国水利水电第十一工程局有限公司 | Horseshoe pen type shield body structure and shield body structure construction technology thereof |
| CN104695968A (en) * | 2015-02-11 | 2015-06-10 | 河南工程学院 | Method for in-tunnel starting of shield tunneling machine |
| CN104695965A (en) * | 2014-12-30 | 2015-06-10 | 中铁隧道集团有限公司 | Multifunctional originating station and originating method for departure and reception of shield |
| CN109236305A (en) * | 2018-10-26 | 2019-01-18 | 中铁第勘察设计院集团有限公司 | Shield sky is pushed away through bored tunnel and the secondary construction method and its structure originated |
| CN109505613A (en) * | 2018-12-30 | 2019-03-22 | 中铁五局集团电务工程有限责任公司 | Originating method in the hole of earth pressure balanced shield, EPBS in small space |
| CN110454178A (en) * | 2019-09-05 | 2019-11-15 | 中铁隧道局集团有限公司 | It is originated in large-diameter shield auger with counter-force structure production method and counter-force structure |
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| JPH11200761A (en) * | 1998-01-20 | 1999-07-27 | Kajima Corp | Structure of shaft in shield tunneling method |
| CN201330606Y (en) * | 2008-12-16 | 2009-10-21 | 上海隧道工程股份有限公司 | Base for tunnel shield to enter hole |
| CN102155236A (en) * | 2011-02-16 | 2011-08-17 | 长江水利委员会长江勘测规划设计研究院 | Shield starting counter-force base |
| CN102817616A (en) * | 2012-08-06 | 2012-12-12 | 葛洲坝集团第五工程有限公司 | Construction device and construction method for tunneling soft rock |
| CN202866826U (en) * | 2012-10-25 | 2013-04-10 | 中铁二院工程集团有限责任公司 | Shield tunnel working well outer end socket stratum reinforced structure |
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| JPH11200761A (en) * | 1998-01-20 | 1999-07-27 | Kajima Corp | Structure of shaft in shield tunneling method |
| CN201330606Y (en) * | 2008-12-16 | 2009-10-21 | 上海隧道工程股份有限公司 | Base for tunnel shield to enter hole |
| CN102155236A (en) * | 2011-02-16 | 2011-08-17 | 长江水利委员会长江勘测规划设计研究院 | Shield starting counter-force base |
| CN102817616A (en) * | 2012-08-06 | 2012-12-12 | 葛洲坝集团第五工程有限公司 | Construction device and construction method for tunneling soft rock |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074526A (en) * | 2014-06-19 | 2014-10-01 | 中国水利水电第十一工程局有限公司 | Horseshoe pen type shield body structure and shield body structure construction technology thereof |
| CN104074526B (en) * | 2014-06-19 | 2016-03-23 | 中国水利水电第十一工程局有限公司 | A kind of shape of a hoof open type shield structure body structure and shield construction technique thereof |
| CN104695965A (en) * | 2014-12-30 | 2015-06-10 | 中铁隧道集团有限公司 | Multifunctional originating station and originating method for departure and reception of shield |
| CN104695968A (en) * | 2015-02-11 | 2015-06-10 | 河南工程学院 | Method for in-tunnel starting of shield tunneling machine |
| CN109236305A (en) * | 2018-10-26 | 2019-01-18 | 中铁第勘察设计院集团有限公司 | Shield sky is pushed away through bored tunnel and the secondary construction method and its structure originated |
| CN109505613A (en) * | 2018-12-30 | 2019-03-22 | 中铁五局集团电务工程有限责任公司 | Originating method in the hole of earth pressure balanced shield, EPBS in small space |
| CN110454178A (en) * | 2019-09-05 | 2019-11-15 | 中铁隧道局集团有限公司 | It is originated in large-diameter shield auger with counter-force structure production method and counter-force structure |
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Application publication date: 20140409 |