CN101614126A - A kind of job practices of directly cutting guard post for tunnel end well by shield machine - Google Patents
A kind of job practices of directly cutting guard post for tunnel end well by shield machine Download PDFInfo
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- CN101614126A CN101614126A CN200810068142A CN200810068142A CN101614126A CN 101614126 A CN101614126 A CN 101614126A CN 200810068142 A CN200810068142 A CN 200810068142A CN 200810068142 A CN200810068142 A CN 200810068142A CN 101614126 A CN101614126 A CN 101614126A
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- end well
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Abstract
A kind of job practices of directly cutting guard post for tunnel end well by shield machine, enhancing body in the fender post is by the upper reinforcement cage, lower rebar cage and middle part FRP muscle cage constitute, the position of middle part FRP muscle cage is corresponding with shield machine access tunnel end well position, construction sequence is for successively with the lower rebar cage, middle part FRP muscle cage and the lifting of upper reinforcement cage, overlap joint, after the colligation, insert the conduit fluid concrete, form the guard post for tunnel end well structure, when shield machine tunnels to the end well position, earlier the cutterhead of shield machine is replaced by hobboing cutter, serrated knife or scraper carry out the cutting of fender post again.Shortcomings such as the present invention overcomes conventional construction method expense height, the cycle is long, difficulty of construction is big, avoided the method cutter of artificial broken muscle to go the steel concrete of corresponding position to go along with sb. to guard him, thereby improved safety, the job practices short for a kind of duration, that cost is low, safe.
Description
Technical field
The present invention relates to a kind of underground structure job practices, relate in particular to the job practices of a kind of shield machine into and out of the direct cutting guard post for tunnel end well of tunnel end well.
Background technology
End well (such as subway station) in tunnels such as subway, subterranean tunnel, cable passages is located, and all adopts the supporting of reinforced concrete structure as foundation ditch at present, reaches the purpose of the native sealing of retaining.In shield tunnel construction, tunnel piercing is during to the end well position, and the supporting and protection structure of directly cutting steel concrete with the cutter of shield machine is very difficult, is easy to cause problems such as tool damage, reinforcing bar jam cutterhead.For making things convenient for shield machine into and out of end well, the general method cutter of artificial broken muscle that adopts goes the steel concrete of corresponding position to go along with sb. to guard him.Not only operating environment is arduous for this method, labour intensity is big, because the cutting of space enclosing structure destroys, problems such as underground water pours in, soil body landslide very easily occur simultaneously, and is greatly dangerous.
In order to ensure construction safety, before artificial the cutting, must reinforce or do temporary lining to the soil body of shield machine outside the end well position.The processing method that adopts has high-pressure rotary spraying method, deep mixing method, chemical grouting method or freezing method etc. at present, and this has not only increased the expense that end well is gone along with sb. to guard him, and has prolonged construction period; Also the work plane of termination well construction is had higher requirement, to the influence increase of traffic on every side and building.
In view of above-mentioned technology, Effect of Environmental, be badly in need of the job practices that is used for cutting guard post for tunnel end well that a kind of duration is short, cost is low, working security is high.
Summary of the invention
The present invention is just in order to solve above technical deficiency, and shortcoming such as overcome conventional construction method expense height, the cycle is long, difficulty of construction is big provides the job practices of the directly cutting guard post for tunnel end well by shield machine that a kind of duration is short, cost is low, safe.
In order to overcome above technical deficiency, the present invention adopts following technical scheme:
A kind of job practices of directly cutting guard post for tunnel end well by shield machine, enhancing body in the fender post is by the upper reinforcement cage, lower rebar cage and middle part FRP muscle cage constitute, the position of described FRP muscle cage is corresponding with shield machine access tunnel end well position, construction sequence is for successively with the lower rebar cage, middle part FRP muscle cage and the lifting of upper reinforcement cage, overlap joint, after the colligation, insert the conduit fluid concrete, form the guard post for tunnel end well structure, when shield machine tunnels to the tunnel end well position, earlier the cutterhead of shield machine is replaced by hobboing cutter, serrated knife or scraper carry out the cutting of guard post for tunnel end well again.
Described FRP muscle cage is the cylindrical shape cage that is formed by GFRP muscle or the colligation of CFRP muscle.(FRP is a fiber-reinforced polymer; GFRP is a glass fiber reinforced polymer; The CFRP carbon fiber reinforced polymer.)
The cross-sectional area of described FRP muscle cage is greater than shield machine access tunnel end well fender post area.
The invention provides a kind of job practices of directly cutting guard post for tunnel end well by shield machine, avoided the method cutter of artificial broken muscle to go the steel concrete of corresponding position to go along with sb. to guard him, thereby improved safety, directly cutting guard post for tunnel end well makes easy construction, the economy, quick of shield machine into and out of tunnel end well.
Description of drawings
Fig. 1 is the flow chart of job practices of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with description of drawings and the specific embodiment:
The structure of guard post for tunnel end well is different with traditional structure in the job practices of the present invention, the enhancing body of traditional fender post is made of reinforcing bar usually, and the enhancing body among the present invention is by the upper reinforcement cage, the FRP muscle cage at lower rebar cage and middle part constitutes, the position of FRP muscle cage is corresponding with shield machine access tunnel end well position, form a complete enhancing body by overlap joint between different muscle body cages, construction sequence is: successively with the lower rebar cage, middle part FRP muscle cage and the lifting of upper reinforcement cage, overlap joint, after the colligation, insert the conduit fluid concrete, form the guard post for tunnel end well structure, when shield machine tunnels to the tunnel end well position, earlier the cutterhead of shield machine is replaced by hobboing cutter, serrated knife or scraper carry out the cutting of guard post for tunnel end well again.
Concrete construction sequence of the present invention is as follows:
1. preparation of construction: comprise that unit groove is divided, equipment is marched into the arena installations, the steel concrete guide groove is constructed, the slurry coat method pond is provided with and mixing system, reach guide hole and construct; The construction error standard of wherein leading wall is: centerline error is ± 10mm; The absolute altitude error is ± 10mm in the end face length range;
2. grooving construction: groover passes through and constructs orderly, makes groove depth be controlled at same absolute altitude;
3. the clear end and enhancing cage body construction: strengthen the cage body by design welding, colligation.Require lower rebar cage bottom apart from more than the bottom land 10cm-20cm, cage body side surface to concrete surface stays the gap of 5cm-15cm;
4. after stake hole or groove are finished, the lower rebar cage is lifted;
5. reinforcing cage is inserted the stake hole, the bonding part is reserved in more than the face of land, and does interim support;
6. with FRP muscle cage lifting, with the lower rebar cage by fish plate and steel Bolt Connection;
7. will connect good FRP cage and insert the stake hole, the bonding part is reserved in more than the face of land, and does interim support;
8. with upper reinforcement cage lifting, with FRP muscle cage by fish plate and steel Bolt Connection;
9. will connect good reinforcing cage and insert the stake hole, and do interim support to projected depth;
10. insert the conduit fluid concrete.
In the shield tunnel construction, tunnel piercing is to the end well position, and only needing the cutter changing with cutterhead is hobboing cutter or serrated knife, just can directly cut end well fender post structure into and out of end well, and job practices and shield structure standard operating instructions are basic identical.
Although the present invention has done to describe in detail and quoted embodiment as proof, for those of ordinary skill in the art, obviously various schemes, modification and the change that can make according to above-mentioned explanation all should be included within the scope of claim.
Claims (3)
1, a kind of job practices of directly cutting guard post for tunnel end well by shield machine, it is characterized in that: the enhancing body in the fender post is by the upper reinforcement cage, lower rebar cage and middle part FRP muscle cage constitute, the position of described middle part FRP muscle cage is corresponding with shield machine access tunnel end well position, construction sequence is for successively with the lower rebar cage, middle part FRP muscle cage and the lifting of upper reinforcement cage, overlap joint, after the colligation, insert the conduit fluid concrete, form the guard post for tunnel end well structure, when shield machine tunnels to the tunnel end well position, earlier the cutterhead of shield machine is replaced by hobboing cutter, serrated knife or scraper carry out the cutting of guard post for tunnel end well again.
2, job practices as claimed in claim 1 is characterized in that: described FRP muscle cage is the cylindrical shape cage that is formed by GFRP muscle or the colligation of CFRP muscle.
3, job practices as claimed in claim 1 or 2 is characterized in that: the cross-sectional area of described FRP muscle cage is greater than the area of shield machine access tunnel end well fender post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810068142A CN101614126A (en) | 2008-06-27 | 2008-06-27 | A kind of job practices of directly cutting guard post for tunnel end well by shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810068142A CN101614126A (en) | 2008-06-27 | 2008-06-27 | A kind of job practices of directly cutting guard post for tunnel end well by shield machine |
Publications (1)
| Publication Number | Publication Date |
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| CN101614126A true CN101614126A (en) | 2009-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810068142A Pending CN101614126A (en) | 2008-06-27 | 2008-06-27 | A kind of job practices of directly cutting guard post for tunnel end well by shield machine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674752A (en) * | 2013-12-02 | 2014-03-26 | 北京交通大学 | Testing method for judging capability of cutting large-diameter pile foundation of shield cutter head tool |
| CN104060997A (en) * | 2014-07-11 | 2014-09-24 | 北京建筑大学 | Method for conducting construction by enabling shield tunneling machine to penetrate through inspection well |
| CN104594912A (en) * | 2014-11-21 | 2015-05-06 | 北京城建设计发展集团股份有限公司 | Method for grinding and penetrating through pile groups through shield tunneling machine |
| CN106677789A (en) * | 2016-12-12 | 2017-05-17 | 上海市基础工程集团有限公司 | Construction method for full cross-section traversing of glass fiber-reinforced polymer underground diaphragm wall through shield |
| CN110107304A (en) * | 2019-05-20 | 2019-08-09 | 三明学院 | A kind of shield launching receives well borehole wall part FRP tendons method for protecting support |
| CN111472811A (en) * | 2020-04-17 | 2020-07-31 | 中国人民解放军63921部队 | Assembled integral GFRP-framework concrete mouth lining structure for rapid repair of tunnel mouth and rapid repair method |
| CN112901176A (en) * | 2020-12-24 | 2021-06-04 | 南昌轨道交通集团有限公司 | Shield tunneling machine passing method capable of reducing disturbance |
| CN112983446A (en) * | 2021-04-22 | 2021-06-18 | 中铁一局集团第二工程有限公司 | Construction method for shield cutting of existing station reinforced concrete fender post |
| CN113914892A (en) * | 2021-11-16 | 2022-01-11 | 中铁第四勘察设计院集团有限公司 | Tooth clamp type shield segment circular seam connecting device and using method thereof |
-
2008
- 2008-06-27 CN CN200810068142A patent/CN101614126A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674752A (en) * | 2013-12-02 | 2014-03-26 | 北京交通大学 | Testing method for judging capability of cutting large-diameter pile foundation of shield cutter head tool |
| CN103674752B (en) * | 2013-12-02 | 2016-03-16 | 北京交通大学 | A kind of test method passing judgment on shield cutter Tool in Cutting large diameter pile foundation ability |
| CN104060997A (en) * | 2014-07-11 | 2014-09-24 | 北京建筑大学 | Method for conducting construction by enabling shield tunneling machine to penetrate through inspection well |
| CN104060997B (en) * | 2014-07-11 | 2016-03-30 | 北京建筑大学 | The construction method of shield crossing manhole |
| CN104594912A (en) * | 2014-11-21 | 2015-05-06 | 北京城建设计发展集团股份有限公司 | Method for grinding and penetrating through pile groups through shield tunneling machine |
| CN106677789A (en) * | 2016-12-12 | 2017-05-17 | 上海市基础工程集团有限公司 | Construction method for full cross-section traversing of glass fiber-reinforced polymer underground diaphragm wall through shield |
| CN110107304A (en) * | 2019-05-20 | 2019-08-09 | 三明学院 | A kind of shield launching receives well borehole wall part FRP tendons method for protecting support |
| CN111472811A (en) * | 2020-04-17 | 2020-07-31 | 中国人民解放军63921部队 | Assembled integral GFRP-framework concrete mouth lining structure for rapid repair of tunnel mouth and rapid repair method |
| CN111472811B (en) * | 2020-04-17 | 2021-06-01 | 中国人民解放军63921部队 | Assembled integral GFRP-framework concrete mouth lining structure for rapid repair of tunnel mouth and rapid repair method |
| CN112901176A (en) * | 2020-12-24 | 2021-06-04 | 南昌轨道交通集团有限公司 | Shield tunneling machine passing method capable of reducing disturbance |
| CN112983446A (en) * | 2021-04-22 | 2021-06-18 | 中铁一局集团第二工程有限公司 | Construction method for shield cutting of existing station reinforced concrete fender post |
| CN113914892A (en) * | 2021-11-16 | 2022-01-11 | 中铁第四勘察设计院集团有限公司 | Tooth clamp type shield segment circular seam connecting device and using method thereof |
| CN113914892B (en) * | 2021-11-16 | 2024-02-20 | 中铁第四勘察设计院集团有限公司 | Tooth-clip type shield segment circumferential seam connecting device and application method thereof |
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Application publication date: 20091230 |