CN105317448A - Elastic sealing gasket for shield tunnel duct pipe seam - Google Patents
Elastic sealing gasket for shield tunnel duct pipe seam Download PDFInfo
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- CN105317448A CN105317448A CN201410334735.8A CN201410334735A CN105317448A CN 105317448 A CN105317448 A CN 105317448A CN 201410334735 A CN201410334735 A CN 201410334735A CN 105317448 A CN105317448 A CN 105317448A
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- sealing gasket
- elastic sealing
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Abstract
The invention discloses an elastic sealing gasket for a shield tunnel duct pipe seam. The sealing gasket comprises grooves and through holes, each through hole is in a fillet triangular format, the fillet triangular through holes are divided into three to five upper-row fillet triangular through holes and four to six lower-row fillet triangular through holes, the upper-row fillet triangular through holes and the lower-row fillet triangular through holes are formed at intervals, and the dimension of the upper-row fillet triangular through holes is slightly smaller than that of the lower-row fillet triangular through holes. According to the elastic sealing gasket, by means of design optimization of corresponding dimension and arrangement, the section form of the optimal performance is obtained, and through corresponding water-pressure resistance tests and mechanical tests, the waterproofness and mechanical properties of the section form are obtained. The elastic sealing gasket is applicable to the waterproof purpose of a large-diameter high-outer-water-pressure shield tunnel duct piece seam.
Description
Technical field
The invention belongs to shield tunnel project field, more specifically relate to a kind of duct pieces of shield tunnel seam elastic sealing gasket, be applicable to the segments' joints waterproofing engineering of shield tunnel under water.
Background technology
There is a large amount of seams between shield tunnel lining segment, in Practical Project, adopt Ethylene Propylene Terpolymer elastic sealing gasket as main waterproofing materials at present.Be pasted onto in segment prefabricated groove by Ethylene Propylene Terpolymer elastic sealing gasket in engineering, the elastic sealing gasket be attached to respectively on two pieces of sections of jurisdiction by extruding when pipe sheet assembling obtains water-proof function.But because new built shield tunnel buried depth strengthens gradually, require to improve constantly to the waterproof ability of elastic sealing gasket.Therefore the requirement for elastic sealing gasket waterproof ability is more and more higher, and simultaneously due to the consideration for practice of construction and safety of structure, the assembly force of elastic sealing gasket has must meet certain restriction.Therefore need to provide novel elastic sealing gasket form of fracture, the waterproof requirement of duct pieces of shield tunnel seam under high hydraulic pressure can be met, ensure that assembly force can meet simultaneously and construct and designing requirement.
Summary of the invention
The object of the invention is to there are provided a kind of duct pieces of shield tunnel seam elastic sealing gasket, structure is simple, easy to use, by improving the design optimization of the shape of through hole, corresponding size and arrangement mode, obtain the structure of water resistance and mechanical property optimum, be specially adapted to the outer hydraulic pressure duct pieces of shield tunnel seam waterproof purposes of major diameter height.
In order to realize above-mentioned object, the present invention adopts following technical measures:
A kind of duct pieces of shield tunnel seam elastic sealing gasket, comprise the groove and through hole that are symmetrical set along segment joint elastomeric gasket central axis, groove is symmetricly set in bottom sealing mat along sealing mat central axis, and shape is U-shaped, amounts to 4-6; Through hole is divided into row's fillet triangle through hole and lower row's fillet triangle through hole, upper row's fillet triangle through hole 3-5, and lower row's fillet triangle through hole 4-6, upper lower through-hole is arranged separately, and segment joint elastic sealing gasket is symmetrical.
Described upper row's fillet triangle through hole is less than lower row's fillet triangle through hole.
Preferably, described groove is 5, upper row's fillet triangle through hole 4, lower row's fillet triangle through hole 5.
Described fillet triangle is formed by equilateral triangle rounding on Qi Gejiao.
Described upper row's fillet triangle through hole is set to inverted triangle, and its top margin parallels with elastic sealing gasket end face, and lower row's fillet triangle through hole is the triangle that forward is arranged, and its base parallels with elastic sealing gasket base.
The present invention compared with prior art, has the following advantages and effect:
A, structure are simple, easy to use;
B, effectively improve the waterproof ability of elastic sealing gasket, its assembly force is less simultaneously;
C, be applicable to major diameter, high hydraulic pressure duct pieces of shield tunnel seam waterproof.
Therefore, sealing mat form of fracture proposed by the invention, possesses higher waterproof ability, the advantage that its assembly force is less simultaneously.
Accompanying drawing explanation
Fig. 1 is a kind of duct pieces of shield tunnel seam elastic sealing gasket form of fracture schematic diagram.
Fig. 2 is the duct pieces of shield tunnel seam elastic sealing gasket form of fracture schematic diagram that a kind of embodiment is selected.
Fig. 3 is upper row's fillet triangle through hole schematic diagram that a kind of embodiment is selected.
Fig. 4 is lower row's fillet triangle through hole schematic diagram that a kind of embodiment is selected.
Fig. 5 is the sealing mat water resistance test result figure under the corresponding different changing of the relative positions amount of the sealing mat selected of a kind of embodiment, joint open condition.
Fig. 6 is the assembled Force meansurement result figure under the different joint open condition of sealing mat that a kind of embodiment is selected.
Wherein: 1-groove, 2-above row's fillet triangle through hole, 3-lower row's fillet triangle through hole.
Detailed description of the invention
Below in conjunction with case study on implementation, the present invention is described in further detail:
Embodiment 1:
According to Fig. 1, a kind of duct pieces of shield tunnel seam elastic sealing gasket, comprise groove 1 and through hole, it is characterized in that: groove 1 is arranged on bottom sealing mat, shape is U-shaped, groove 1 has 4 or 5 or 6 to be symmetrical set along sealing mat central axis, through hole is made up of fillet triangle, be divided into row's fillet triangle through hole 2 and lower row's fillet triangle through hole 3, upper row's fillet triangle through hole 2 quantity is 3 or 4 or 5, lower row's fillet triangle through hole 3 is 4 or 5 or 6, upper row's fillet triangle through hole 2 and the spaced layout of lower row's fillet triangle through hole 3, segment joint elastic sealing gasket is symmetrical.
Described upper row's fillet triangle through hole is less than lower row's fillet triangle through hole.
Described fillet triangle is formed by equilateral triangle rounding on Qi Gejiao.
Described upper row's fillet triangle through hole is set to inverted triangle, and its top margin parallels with elastic sealing gasket end face, lower row's fillet
Triangle through hole is the triangle that forward is arranged, and its base parallels with elastic sealing gasket base.
Preferably, as shown in Figure 2, upper row's fillet triangle through hole 2 has 4, is symmetrical set along pad central axis, and the spacing of the central point of upper row's fillet triangle through hole 2 is 8.4mm.The fillet triangle top margin of upper row's fillet triangle through hole 2 is 1.8mm from the distance of elastic sealing gasket end face.The size of upper row's fillet triangle through hole as shown in Figure 3, is the equilateral triangle of 2.1mm by the length of side, and the chamfer radius on Qi Gejiao is that 1mm fillet forms.
Preferably, as shown in Figure 2, lower row's fillet triangle through hole 3 has 5, be symmetrical set along pad central axis, the spacing of the central point of lower row's fillet triangle through hole 3 that the central point arranging fillet triangle through hole 3 under middle is adjacent is 8.4mm, and the spacing of arranging the central point of the central point of fillet triangle through hole 3 lower row's fillet triangle through hole 3 adjacent with it under two of end is 7.7mm.The fillet triangle base of lower row's fillet triangle through hole 3 is 10.7mm from the top margin distance of the fillet triangle of upper row's fillet triangle through hole 2.The size of lower row's fillet triangle through hole 3 as shown in Figure 4, is the equilateral triangle of 2.73mm by the length of side, and the chamfer radius on Qi Gejiao is that 1.4mm fillet forms.
Sealing mat elastomeric material hardness is shore 70 degree, and sealing mat changing of the relative positions amount is respectively 0mm, 15mm, and be that waterproof ability under 2mm to 11mm condition is tested to sealing mat at joint open, result is as Fig. 5.
The waterproof ability trend that the changing of the relative positions measures 0mm, 15mm corresponding is consistent, and changing of the relative positions amount size is little to waterproof ability Index Influence, and joint open is large to waterproof ability Index Influence.
In changing of the relative positions 15mm situation, the waterproof ability of different joint open is:
Seam joint open 8mm, the waterproof ability of sealing mat is about 0.80MPa.
Seam joint open 7mm, the waterproof ability of sealing mat is about 1.0MPa.
Seam joint open 6mm, the waterproof ability of sealing mat is about 1.25MPa.
Elastic sealing gasket requires can use Suporting structure that sealing mat is depressed into closure state when assembling, closure state and seam joint open are 0mm, elastic sealing gasket of good performance should possess the less performance of assembly force corresponding under closure state condition simultaneously, to ensure the stability of section of jurisdiction concrete groove, reduce the requirement to the assembled ability of Suporting structure simultaneously.
The assembled Force meansurement result display of elastic sealing gasket, the assembly force under closure state is less than 160kN/m, as Fig. 6.
Claims (5)
1. a duct pieces of shield tunnel seam elastic sealing gasket, comprise the groove (1) and through hole that are symmetrical set along segment joint elastomeric gasket central axis, it is characterized in that: groove (1) is symmetricly set in bottom sealing mat along sealing mat central axis, shape is U-shaped, amount to 4-6, through hole is divided into row's fillet triangle through hole (2) and lower row's fillet triangle through hole (3), upper row's fillet triangle through hole (2) 3-5, lower row's fillet triangle through hole (3) 4-6, upper lower through-hole is arranged separately, and segment joint elastic sealing gasket is symmetrical.
2. a kind of duct pieces of shield tunnel seam elastic sealing gasket according to claim 1, is characterized in that: above arrange fillet triangle through hole (2) and be less than lower row's fillet triangle through hole (3).
3. a kind of duct pieces of shield tunnel seam elastic sealing gasket according to claim 1, is characterized in that: described fillet triangle is formed by equilateral triangle rounding on Qi Gejiao.
4. a kind of duct pieces of shield tunnel seam elastic sealing gasket according to claim 1, is characterized in that: described groove is 5, upper row's fillet triangle through hole 4, lower row's fillet triangle through hole 5.
5. a kind of duct pieces of shield tunnel seam elastic sealing gasket according to claim 1, it is characterized in that: described upper row's fillet triangle through hole (2) is set to inverted triangle shape, the top margin of inverted triangle parallels with elastic sealing gasket end face, the triangle that lower row's fillet triangle through hole (3) is arranged for forward, its base parallels with elastic sealing gasket base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410334735.8A CN105317448A (en) | 2014-07-15 | 2014-07-15 | Elastic sealing gasket for shield tunnel duct pipe seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410334735.8A CN105317448A (en) | 2014-07-15 | 2014-07-15 | Elastic sealing gasket for shield tunnel duct pipe seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105317448A true CN105317448A (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410334735.8A Pending CN105317448A (en) | 2014-07-15 | 2014-07-15 | Elastic sealing gasket for shield tunnel duct pipe seam |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697038A (en) * | 2016-03-04 | 2016-06-22 | 同济大学 | Anti-skid waterproof sealing gasket for duct piece top sealing sheet of fabricated shield tunnel |
| CN106285729A (en) * | 2016-10-27 | 2017-01-04 | 中国石油天然气集团公司 | A kind of waterproof method for high hydraulic pressure light section shield tunnel seam |
| CN106593492A (en) * | 2016-12-19 | 2017-04-26 | 同济大学 | Waterproof elastic sealing gasket for deep water draining shield tunnel segment seam |
| CN110318778A (en) * | 2019-07-31 | 2019-10-11 | 中铁第四勘察设计院集团有限公司 | A kind of section of jurisdiction waterproof sealing gasket and shield duct piece waterproof construction reducing friction texturizing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4900607A (en) * | 1987-09-05 | 1990-02-13 | Phoenix Aktiengesellschaft | Sealing profile |
| CN201428462Y (en) * | 2009-06-30 | 2010-03-24 | 衡水市橡胶总厂有限公司 | Composite rubber sealing strip for tunnel segment of shield method |
| CN202017496U (en) * | 2011-04-07 | 2011-10-26 | 上海市电力公司 | Universal water-proof elastic sealing gasket for tunnel lining circumferential and longitudinal joints in shield method |
| CN203978454U (en) * | 2014-07-15 | 2014-12-03 | 中交第二公路勘察设计研究院有限公司 | A kind of duct pieces of shield tunnel seam elastic sealing gasket |
-
2014
- 2014-07-15 CN CN201410334735.8A patent/CN105317448A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4900607A (en) * | 1987-09-05 | 1990-02-13 | Phoenix Aktiengesellschaft | Sealing profile |
| CN201428462Y (en) * | 2009-06-30 | 2010-03-24 | 衡水市橡胶总厂有限公司 | Composite rubber sealing strip for tunnel segment of shield method |
| CN202017496U (en) * | 2011-04-07 | 2011-10-26 | 上海市电力公司 | Universal water-proof elastic sealing gasket for tunnel lining circumferential and longitudinal joints in shield method |
| CN203978454U (en) * | 2014-07-15 | 2014-12-03 | 中交第二公路勘察设计研究院有限公司 | A kind of duct pieces of shield tunnel seam elastic sealing gasket |
Non-Patent Citations (1)
| Title |
|---|
| 赵运臣等: "武汉长江隧道管片接缝防水密封垫设计与试验研究", 《隧道建设》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697038A (en) * | 2016-03-04 | 2016-06-22 | 同济大学 | Anti-skid waterproof sealing gasket for duct piece top sealing sheet of fabricated shield tunnel |
| CN105697038B (en) * | 2016-03-04 | 2018-06-05 | 同济大学 | Assembled duct pieces of shield tunnel binds block anti-skid and waterproof gasket |
| CN106285729A (en) * | 2016-10-27 | 2017-01-04 | 中国石油天然气集团公司 | A kind of waterproof method for high hydraulic pressure light section shield tunnel seam |
| CN106593492A (en) * | 2016-12-19 | 2017-04-26 | 同济大学 | Waterproof elastic sealing gasket for deep water draining shield tunnel segment seam |
| CN110318778A (en) * | 2019-07-31 | 2019-10-11 | 中铁第四勘察设计院集团有限公司 | A kind of section of jurisdiction waterproof sealing gasket and shield duct piece waterproof construction reducing friction texturizing |
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Application publication date: 20160210 |