CN103397892A - Shield starting tunnel portal extension steel ring - Google Patents

Shield starting tunnel portal extension steel ring Download PDF

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Publication number
CN103397892A
CN103397892A CN2013102944484A CN201310294448A CN103397892A CN 103397892 A CN103397892 A CN 103397892A CN 2013102944484 A CN2013102944484 A CN 2013102944484A CN 201310294448 A CN201310294448 A CN 201310294448A CN 103397892 A CN103397892 A CN 103397892A
Authority
CN
China
Prior art keywords
plate
ring flat
steel loop
steel ring
ring
Prior art date
Application number
CN2013102944484A
Other languages
Chinese (zh)
Inventor
刘尧庆
沙权贤
Original Assignee
中铁十三局集团有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中铁十三局集团有限公司 filed Critical 中铁十三局集团有限公司
Priority to CN2013102944484A priority Critical patent/CN103397892A/en
Publication of CN103397892A publication Critical patent/CN103397892A/en

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Abstract

The invention discloses a shield starting tunnel portal extension steel ring. The shield starting tunnel portal extension steel ring is characterized in that the steel ring comprises a steel ring body (1) with the width of at least 45mm, one end of the steel ring body (1) is connected with a first ring plate (2), the internal diameter of the first ring plate (2) is equal to that of the steel ring body (1), the external diameter of the first ring plate (2) is larger than the diameter of the steel ring body (1), and a second ring plate (3) is fixedly connected with the first ring plate (2), twice as thick as the first ring plate (2) and embedded in the wall of a tunnel portal. The shield starting tunnel portal extension steel ring is simple in structure and skillful in design, avoids dust pollution caused by manual pile breaking and can improve working efficiency of a shield machine.

Description

The shield launching portal extends steel loop

Technical field

The present invention relates to a kind of shield launching portal supplementary structure, particularly a kind of shield launching portal extends steel loop.

Background technology

In subway shield tunnel construction, starting of shield machine is a considerable link, in construction in the past, because the distance between portal sealing and face is very near, for the cutterhead that makes shield machine when carrying out broken pile, can not damage the cord rubber tile, usually will adopt manually-operated mode that face is abolished 60cm before broken pile dark, to guarantee the space of cutterhead rotation.But, artificial broken pile construction can produce a large amount of dust, and because plate in the station of missing the stop seals often, dust can't be discharged smoothly, make the air quality in station sharply descend, have a strong impact on workman's construction environment, also can affect the assembly working of technique on shield machine's station-crossing simultaneously, thereby seriously delay the progress of technique on shield machine's station-crossing construction.Therefore need now a kind of new structure that can address the above problem or device.

Summary of the invention

The present invention is in order to solve the existing above-mentioned deficiency of prior art, propose a kind of simple in structure, design ingenious, the dust pollution of avoiding artificial broken pile to cause, and the shield launching portal that can improve the shield machine operating efficiency extends steel loop.

Technical solution of the present invention is: a kind of shield launching portal extends steel loop, it is characterized in that: described steel loop comprises steel loop body 1, the width of steel loop body 1 is at least 45mm, one end of steel loop body 1 is connected with the first ring flat-plate 2, the internal diameter of the first ring flat-plate 2 is identical with steel loop body 1, and the external diameter of the first ring flat-plate 2, greater than the diameter of steel loop body 1, is fixedly connected with the second ring flat-plate 3 with the first ring flat-plate 2, the thickness of the second ring flat-plate 3 is the twice of the first ring flat-plate 2 thickness, and the second ring flat-plate 3 is embedded in the portal body of wall.

Be evenly distributed with a plurality of gussets 4 on described steel loop body 1, and differ 15 degree between adjacent gusset 4 on circumference.

The thickness of described steel loop body 1 and the first ring flat-plate 2 is 10mm, the internal diameter of the diameter of steel loop body 1, the first ring flat-plate 2 and the second ring flat-plate 3 is 6500mm, and the external diameter of the first ring flat-plate 2 and the second ring flat-plate 3 is 6800mm, and the thickness of gusset 4 is 20mm, length is 450mm, and width is 115mm.

The present invention compared with the existing technology, has following advantage:

The shield launching portal of this kind of form of structure extends steel loop, it is simple in structure, design is ingenious, it is for the existing defect of existing construction technology, be provided with an outward extending steel loop on portal, so just exempted artificial broken pile working procedure in traditional work progress, fundamentally solve the problem of the interior dust in station in the work progress that misses the stop, when improving workman's construction operation environment, can also improve the construction speed of technique on shield machine's station-crossing; Can also reduce simultaneously the cost of shield-tunneling construction in the mode of portal extension steel loop replacement Traditional Man broken pile, and site operation is convenient; Therefore can say that portal extends steel loop and have higher practicality in subway shield tunnel construction, be particularly suitable for applying in the art, its market prospects are very wide.

Description of drawings

Fig. 1 is the front view of the embodiment of the present invention.

Fig. 2 is the lateral view of the embodiment of the present invention.

The specific embodiment

Below in conjunction with description of drawings the specific embodiment of the present invention.As shown in Figure 1 and Figure 2: a kind of shield launching portal extends steel loop, it comprises steel loop body 1, the width of this steel loop body 1 is at least 45mm, the internal diameter that one end of steel loop body 1 is connected with the first ring flat-plate 2, the first ring flat-plates 2 is identical with steel loop body 1, and the external diameter of the first ring flat-plate 2 is greater than the diameter of steel loop body 1, form a step-like ring flat-plate, the thickness that is fixedly connected with the second ring flat-plate 3, the second ring flat-plates 3 with the first ring flat-plate 2 is the twice of the first ring flat-plate 2 thickness, and the second ring flat-plate 3 is embedded in the portal body of wall., in order to strengthen bulk strength, also be evenly distributed with a plurality of gussets 4 on steel loop body 1, and differ 15 degree between adjacent gusset 4 on circumference.The thickness of above-mentioned steel loop body 1 and the first ring flat-plate 2 is 10mm, therefore the thickness of the second ring flat-plate 3 is 20mm, the internal diameter of the diameter of steel loop body 1, the first ring flat-plate 2 and the second ring flat-plate 3 is 6500mm, the external diameter of the first ring flat-plate 2 and the second ring flat-plate 3 is 6800mm, the thickness of gusset 4 is 20mm, length is 450mm, and width is 115mm.

The shield launching portal of the embodiment of the present invention extends steel loop, pre-buried the second ring flat-plate 3 in the portal body of wall, and be fixedly connected sequentially thus the first ring flat-plate 2 and steel loop body 1, be in the consideration of bulk strength, also be provided with gusset 4 on steel loop body 1, gusset 4 simultaneously with steel loop body 1 be connected ring flat-plate 2 and be connected, its existence is equivalent to the protruding annular canister of portal body of wall, this annular canister provides space for the cutterhead rotation of shield machine, has therefore also avoided the variety of problems that in the traditional handicraft, artificial broken pile construction produces.

Claims (3)

1. a shield launching portal extends steel loop, it is characterized in that: described steel loop comprises steel loop body (1), the width of steel loop body (1) is at least 45mm, one end of steel loop body (1) is connected with the first ring flat-plate (2), the internal diameter of the first ring flat-plate (2) is identical with steel loop body (1), the external diameter of the first ring flat-plate (2) is greater than the diameter of steel loop body (1), be fixedly connected with the second ring flat-plate (3) with the first ring flat-plate (2), the thickness of the second ring flat-plate (3) is the twice of the first ring flat-plate (2) thickness, and the second ring flat-plate (3) is embedded in the portal body of wall.
2. shield launching portal according to claim 1 extends steel loop, it is characterized in that: be evenly distributed with a plurality of gussets (4) on described steel loop body (1), and differ 15 degree between adjacent gusset (4) on circumference.
3. shield launching portal according to claim 2 extends steel loop, it is characterized in that: the thickness of described steel loop body (1) and the first ring flat-plate (2) is 10mm, the internal diameter of the diameter of steel loop body (1), the first ring flat-plate (2) and the second ring flat-plate (3) is 6500mm, the external diameter of the first ring flat-plate (2) and the second ring flat-plate (3) is 6800mm, the thickness of gusset (4) is 20mm, length is 450mm, and width is 115mm.
CN2013102944484A 2013-07-15 2013-07-15 Shield starting tunnel portal extension steel ring CN103397892A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013102944484A CN103397892A (en) 2013-07-15 2013-07-15 Shield starting tunnel portal extension steel ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013102944484A CN103397892A (en) 2013-07-15 2013-07-15 Shield starting tunnel portal extension steel ring

Publications (1)

Publication Number Publication Date
CN103397892A true CN103397892A (en) 2013-11-20

Family

ID=49561584

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013102944484A CN103397892A (en) 2013-07-15 2013-07-15 Shield starting tunnel portal extension steel ring

Country Status (1)

Country Link
CN (1) CN103397892A (en)

Citations (7)

* Cited by examiner, † Cited by third party
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
CN101487394A (en) * 2009-02-11 2009-07-22 中铁三局集团有限公司 External slip-casting pipe type tunnel shielding portal construction 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
CN101749026A (en) * 2010-02-10 2010-06-23 中铁三局集团有限公司 Grid reinforcing method of shield receiving or starting end head and shield receiving method
CN102011596A (en) * 2010-11-29 2011-04-13 中铁三局集团有限公司 Shield originating or receiving end tunnel portal maintenance process
JP2011241639A (en) * 2010-05-20 2011-12-01 Kajima Corp Junction structure of vertical shaft mouth part
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
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
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
CN101487394A (en) * 2009-02-11 2009-07-22 中铁三局集团有限公司 External slip-casting pipe type tunnel shielding portal construction method
CN101749026A (en) * 2010-02-10 2010-06-23 中铁三局集团有限公司 Grid reinforcing method of shield receiving or starting end head and shield receiving method
JP2011241639A (en) * 2010-05-20 2011-12-01 Kajima Corp Junction structure of vertical shaft mouth part
CN102011596A (en) * 2010-11-29 2011-04-13 中铁三局集团有限公司 Shield originating or receiving end tunnel portal maintenance process
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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Application publication date: 20131120