CN203978455U - A kind of duct pieces of shield tunnel seam elastic sealing gasket - Google Patents
A kind of duct pieces of shield tunnel seam elastic sealing gasket Download PDFInfo
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- CN203978455U CN203978455U CN201420388091.6U CN201420388091U CN203978455U CN 203978455 U CN203978455 U CN 203978455U CN 201420388091 U CN201420388091 U CN 201420388091U CN 203978455 U CN203978455 U CN 203978455U
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Abstract
The utility model discloses a kind of duct pieces of shield tunnel seam elastic sealing gasket, comprise the groove and the through hole that are symmetrical set along segment joint elastic packing pad central axis, through hole is made up of fillet triangle through hole, fillet quadrangle through hole and special-shaped through hole, abnormity through hole divides two rows, 3 of every rows, two rejection shape identical being up and down of hole size shape were symmetrical arranged, upper rejection shape through hole a fillet quadrangle through hole is each side set, lower rejection shape through hole a fillet triangle through hole is each side set.Water resistance and the mechanical property of this form of fracture have been obtained by corresponding water pressure resistance and mechanical test.The utility model is applicable to the outer hydraulic pressure duct pieces of shield tunnel seam waterproof purposes of major diameter height.
Description
Technical field
The utility model belongs to shield tunnel project field, more specifically relates to a kind of duct pieces of shield tunnel seam elastic sealing gasket, is applicable to the segment joint waterproofing of shield tunnel under water.
Background technology
Between shield tunnel lining segment, there is a large amount of seams, in Practical Project, adopt Ethylene Propylene Terpolymer elastic sealing gasket as main waterproofing materials at present.In engineering, Ethylene Propylene Terpolymer elastic sealing gasket is sticked in segment prefabricated groove, in the time of pipe sheet assembling, be attached to respectively two elastic sealing gaskets on section of jurisdiction by extruding and obtain water-proof function.But because new built shield tunnel buried depth strengthens gradually, the waterproof ability of elastic sealing gasket is required to improve constantly.Therefore more and more higher for the requirement of elastic sealing gasket waterproof ability, 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 the elastic sealing gasket form of fracture that provides novel, can meet the waterproof requirement of duct pieces of shield tunnel seam under high hydraulic pressure, ensure that assembly force can meet construction and designing requirement simultaneously.
Summary of the invention
The purpose of this utility model is to be to provide a kind of duct pieces of shield tunnel seam elastic sealing gasket, simple in structure, easy to use, by improving the design optimization of shape, corresponding size and arrangement mode of through hole, 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 utility model adopts following technical measures:
A kind of duct pieces of shield tunnel seam elastic sealing gasket, comprise the groove and the through hole that are symmetrical set along segment joint elastic packing pad central axis, through hole is made up of fillet triangle through hole, fillet quadrangle through hole and special-shaped through hole, abnormity through hole divides two rows, every row 2-4, two rejections are symmetrical arranged shape identical being up and down of hole size shape, upper rejection shape through hole a fillet quadrangle through hole is each side set, lower rejection shape through hole a fillet triangle through hole is each side set; Semicircle and the rectangle of being shaped as of described special-shaped through hole forms, and semicircular diameter overlaps with a rectangular long limit, two jiaos of place's roundings at rectangular another end points place, long limit.
The right angled isosceles triangle rounding on Qi Gejiao that is shaped as of described fillet triangle through hole forms.
The right-angled trapezium four rounding of angle angles that are shaped as of described fillet quadrangle through hole form.
Preferably, the number of described special-shaped through hole two rows is 3.
The utility model is compared with existing form of fracture, has the following advantages and effect:
A, simple in structure, easy to use;
B, effectively improved 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.
The utility model proposes sealing mat form of fracture, possesses higher waterproof ability, simultaneously the less advantage of its assembly force.
Brief description of the drawings
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.
The special-shaped through hole schematic diagram that Fig. 3-1 is selected for a kind of embodiment; Fig. 3-2 are special-shaped through hole intersection point of line segments position view when chamfering not.
The fillet triangle through hole schematic diagram that Fig. 4-1 is selected for a kind of embodiment; Fig. 4-2 are fillet triangle through hole intersection point of line segments position view when chamfering not.
Fig. 5 is the fillet quadrangle through hole schematic diagram that a kind of embodiment is selected.
Fig. 6 is the sealing mat water resistance test result figure under the corresponding different changing of the relative positions amounts of the sealing mat selected of a kind of embodiment, the amount of opening condition.
Fig. 7 is the assembled power test result figure under the sealing mat difference amount of the opening condition selected of a kind of embodiment.
Wherein: 1-groove, 2-special-shaped through hole, 3-fillet triangle through hole, 4-fillet quadrangle through hole.
Detailed description of the invention
Below in conjunction with case study on implementation, the utility model is described in further detail:
Embodiment 1:
As shown in Figure 1, a kind of duct pieces of shield tunnel seam elastic sealing gasket, comprise groove 1 and through hole, groove 1(quantity is 4 or 5 or 6) and through hole be symmetrical set along segment joint elastic packing pad central axis, through hole is by fillet triangle through hole 3, fillet quadrangle through hole 4 and special-shaped through hole 2 form, 2 points of two rows of abnormity through hole, 2 or 3 or 4 of every rows, two rejection shape identical being up and down of through hole 2 size shape were symmetrical arranged, upper rejection shape through hole a fillet quadrangle through hole is each side set, lower rejection shape through hole a fillet triangle through hole is each side set.
As shown in Fig. 3-1 and Fig. 3-2, the semicircle that is shaped as radius 2.5mm of described special-shaped through hole 2 and the rectangle of long 5mm, wide 1.75mm composition, semicircular diameter overlaps with a rectangular long limit, the fillet that two jiaos of place's chamfer radius at rectangular another end points place, long limit are 1mm forms, and different in nature through hole 2 is symmetrical.
As shown in Fig. 4-1 and Fig. 4-2, the right angle length of side that is shaped as of described fillet triangle through hole 3 is that the right angle equilateral triangle fillet that chamfer radius is 0.5mm on Qi Gejiao of 5mm forms.
As shown in Figure 5, the fillet that in four jiaos of right-angled trapezium, chamfer radius is 0.5mm that is shaped as of described fillet quadrangle through hole 4 forms, and the upper and lower base of right-angled trapezium is respectively 3.4mm, 6.452mm, and height is 2.4mm, and hypotenuse is 4.596mm.
As shown in Figure 2, preferably, each 3 of opposite sex through hole 2 two rows, spacing between base and the top margin of two rows abnormity through hole 2 is 1.8mm, the spacing of the axis of symmetry of single adjacent special-shaped through hole 2 is 8.4mm, upper rejection shape through hole 2 a fillet quadrangle through hole 4 is each side set, on fillet quadrangle through hole 4, be 5.6mm near the spacing between limit of upper rejection through hole 2 and the axis of symmetry of the upper shape through hole 2 that rejects, lower rejection shape through hole 2 a fillet triangle through hole 3 is each side set, on fillet triangle through hole 3, be 5.6mm near the spacing between limit of lower rejection through hole 2 and the axis of symmetry of the lower shape through hole 2 that rejects, groove 1 is U-shaped, and quantity is 5, and U-shaped openend is of a size of 5.6mm, and the spacing of adjacent two U-shaped open ends is 2.8mm.
Sealing mat elastomeric material hardness is that Shao Shi 70 spends, and sealing mat changing of the relative positions amount is respectively 0mm, 15mm, is that waterproof ability under 2mm to 11mm condition is tested to sealing mat in the amount of opening, and result as shown in Figure 6.
The waterproof test result of seam changing of the relative positions 0mm and 15mm shows, when changing of the relative positions amount is 0mm and 15mm, waterproof ability difference is larger, the waterproof ability of waterproof ability when changing of the relative positions 0mm during higher than changing of the relative positions 15mm.
In the time of seam changing of the relative positions 15mm, when the seam amount of opening is 8.0mm, waterproof ability is 0.77MPa, and when the amount of opening is 7.0mm, waterproof ability is 0.95MPa, and when the amount of opening is 6.1mm, waterproof ability is 1.28MPa.
Elastic sealing gasket requires can use Suporting structure that sealing mat is depressed into closure state in the time of assembling, closure state is that the seam amount of opening is 0mm, well behaved elastic sealing gasket 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 power test result demonstration of elastic sealing gasket, the assembly force under closure state is less than 80kN/m, as shown in Figure 7.
Claims (4)
1. a duct pieces of shield tunnel seam elastic sealing gasket, comprise the groove (1) and the through hole that are symmetrical set along segment joint elastic packing pad central axis, it is characterized in that: through hole is by fillet triangle through hole (3), fillet quadrangle through hole (4) and special-shaped through hole (2) composition, abnormity through hole (2) point two rows, every row 2-4, two rejection identical being up and down of shape through hole (2) size shape were symmetrical arranged, upper row's special-shaped through hole (2) each side arranges a fillet quadrangle through hole (4), lower row's special-shaped through hole (2) each side arranges a fillet triangle through hole (3), semicircle and the rectangle of being shaped as of described special-shaped through hole (2) forms, and semicircular diameter overlaps with a rectangular long limit, two jiaos of place's roundings at rectangular another end points place, long limit.
2. a kind of duct pieces of shield tunnel seam elastic sealing gasket according to claim 1, is characterized in that: the right angled isosceles triangle rounding on Qi Gejiao that is shaped as of described fillet triangle through hole (3) forms.
3. a kind of duct pieces of shield tunnel seam elastic sealing gasket according to claim 1, is characterized in that: the right-angled trapezium four rounding of angle angles that are shaped as of described fillet quadrangle through hole (4) form.
4. a kind of duct pieces of shield tunnel seam elastic sealing gasket according to claim 1, is characterized in that: the number of described special-shaped through hole (2) two rows is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420388091.6U CN203978455U (en) | 2014-07-15 | 2014-07-15 | A kind of duct pieces of shield tunnel seam elastic sealing gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420388091.6U CN203978455U (en) | 2014-07-15 | 2014-07-15 | A kind of duct pieces of shield tunnel seam elastic sealing gasket |
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| CN203978455U true CN203978455U (en) | 2014-12-03 |
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| CN201420388091.6U Active CN203978455U (en) | 2014-07-15 | 2014-07-15 | A kind of duct pieces of shield tunnel seam elastic sealing gasket |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257319A (en) * | 2014-07-15 | 2016-01-20 | 中交第二公路勘察设计研究院有限公司 | Elastic sealing gasket for joints of shield tunnel segments |
-
2014
- 2014-07-15 CN CN201420388091.6U patent/CN203978455U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257319A (en) * | 2014-07-15 | 2016-01-20 | 中交第二公路勘察设计研究院有限公司 | Elastic sealing gasket for joints of shield tunnel segments |
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