CN103397892A - Shield starting tunnel portal extension steel ring - Google Patents
Shield starting tunnel portal extension steel ring Download PDFInfo
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 51
- 239000010959 steel Substances 0.000 title claims abstract description 51
- 239000000428 dust Substances 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 11
- 238000000034 methods Methods 0.000 description 4
- 238000005516 engineering processes Methods 0.000 description 3
- 239000003570 air Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000576 supplementary Effects 0.000 description 1
Abstract
Description
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)
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)
| 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 |
-
2013
- 2013-07-15 CN CN2013102944484A patent/CN103397892A/en not_active Application Discontinuation
Patent Citations (7)
| 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 |