CN206409250U - A kind of high hydraulic pressure shield tunnel seam waterproof sealing structure - Google Patents
A kind of high hydraulic pressure shield tunnel seam waterproof sealing structure Download PDFInfo
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- CN206409250U CN206409250U CN201621393644.2U CN201621393644U CN206409250U CN 206409250 U CN206409250 U CN 206409250U CN 201621393644 U CN201621393644 U CN 201621393644U CN 206409250 U CN206409250 U CN 206409250U
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- hydraulic pressure
- shield tunnel
- high hydraulic
- sealing gasket
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Abstract
The utility model is related to a kind of high hydraulic pressure shield tunnel seam waterproof sealing structure, including the elastic sealing gasket being separately mounted at adjacent tunnel segment joint, the lower surface of the elastic sealing gasket is arranged in the mounting groove in tunnel duct piece seam, upper surface is mutually pressed into contact with, described elastic sealing gasket is with the symmetrical class trapezium structure of upper and lower end face midpoint line, the elastic sealing gasket includes sealing pad body and is integrally formed with sealing pad body and is arranged on the end on lower surface and post portion, the first exhausting hole and the second exhausting hole are provided with described sealing pad body side by side, described end is arranged on the left and right sides of elastic sealing gasket, multiple inverted U-shaped grooves are opened up between both side ends, multiple post portions are formed between multiple inverted U-shaped grooves, circular hole is further opened with described end.Compared with prior art, the utility model has the advantages that structure is optimal, assembly force is small, water resistance good, wide adaptation range.
Description
Technical field
The utility model is related to high hydraulic pressure shield tunnel project field, gets over that river is over strait, deep layer draining more particularly, to one kind
High hydraulic pressure shield tunnel seam waterproof sealing gasket.
Background technology
With the exploitation of the underground space, shield tunnel is as a kind of ambient influnence is small, mechanization degree is high, construction matter
The high tunnel construction mode of amount is widely used in every underground engineering, such as cross-river tunnel, tunnel over strait, city underground tunnel
Road, water tunnel, electric power tunnel, deep layer outlet tunnel etc..In face of complicated hydrogeologic condition, although using function not
Together, the waterproof for shield tunnel all has very high requirement, especially electric power tunnel etc., and wherein segments' joints waterproofing is wherein
Intermediate portions.
Non-expansibility synthetic rubber is generally used in Practical Project at present, mainly uses the compacted of joint filler to reach
It is usually to be molded ethylene propylene diene monomer (EPDM) material elastic sealing gasket is made as certain shape, as main to waterproof purpose
Waterproof material.EPDM elastic sealing gasket is pasted onto in segment prefabricated groove in engineering, passed through in pipe sheet assembling
The elastic sealing gasket that extruding is attached on two pieces of sections of jurisdiction respectively obtains water-proof function.
For the shield tunnel seam waterproof of high hydraulic pressure, require very high for the waterproof ability of elastic sealing gasket, in order to up to
To certain waterproof ability, the form of elastic sealing gasket needs to do targetedly to optimize, consider assembly force, water-resistant pressure with
And for the adaptability of construction error.This section needs to meet the double requirements of assembly force and water resistance index, this disconnected
Face form also causes elastic sealing gasket to have the elasticity of bigger compressibility and Geng Gao, even if segment joint has certain open
Amount, it remains to be in certain compressive state, can effectively stop the seepage of water.Therefore need to provide new elastic sealing gasket
Form of fracture, can meet the waterproof requirement of duct pieces of shield tunnel seam under high hydraulic pressure, be applied while ensureing that assembly force can be met
Work and design requirement, and higher waterproof ability of still withing a hook at the end in the case of certain joint open and assembled error.
Utility model content
The purpose of this utility model be exactly in order to overcome defect that above-mentioned prior art is present and provide a kind of structure it is optimal,
Assembly force is small, water resistance is good, wide adaptation range high hydraulic pressure shield tunnel seam waterproof sealing structure.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of high hydraulic pressure shield tunnel seam waterproof sealing structure, including be separately mounted at adjacent tunnel segment joint
Elastic sealing gasket, the lower surface of the elastic sealing gasket is arranged in the mounting groove in tunnel duct piece seam, and upper surface is mutually compressed
Contact, described elastic sealing gasket is that, with the symmetrical class trapezium structure of upper and lower end face midpoint line, the elastic sealing gasket includes close
Packing body and it is integrally formed with sealing pad body and is arranged on the end on lower surface and post portion, described sealing pad body
On side by side be provided with the first exhausting hole and the second exhausting hole, described end is arranged on the left and right sides of elastic sealing gasket, two side ends
Open up to be formed between multiple inverted U-shaped grooves, multiple inverted U-shaped grooves between portion and circle is further opened with multiple post portions, described end
Hole.
The first described exhausting hole includes three arched door type through holes, and the second described exhausting hole leads to comprising three with first row
The shape of through holes that hole is included is identical and inverted arched door type through hole.
The centre of form and the centre of form of multiple inverted U-shaped grooves that described the first exhausting hole and the second exhausting hole includes through hole be in
Omnidirectional distribution.
Profile of the described end in the left and right sides is a fold-line-shaped protruded, and prominent part is provided with circular hole.
Described inverted U-shaped groove includes the first groove being located on the line of midpoint and multiple is symmetricly set on the first groove
Second groove of both sides.
Described inverted U-shaped channel section two straight lines tangent by one section of circular arc and with circular arc are constituted.
The centre of form line that centre of form line that the first described exhausting hole includes through hole, the second exhausting hole include through hole with
And on end circular hole circle center line connecting it is parallel with upper surface.
Described elastic sealing gasket is EPT rubber packing pad.
The width in described post portion is 4-9mm.
Described Circularhole diameter scope is 2-6mm.
Compared with prior art, the utility model has advantages below：
First, structure is optimal：Pass through the optimization to the first exhausting hole, the shape of the second exhausting hole and circular hole and position
Design, has obtained water resistance and the optimal structure of mechanical property, the design of arched door hole can effectively reduce assembly force, and up and down
The rubber column portion of insertion is then effectively improved the contact stress peak value between two sealing gaskets, while passing through two mother rib lateral rotundums and
The hole arrangement of one or two rows so that sealing gasket is easy to compression, so that its assembly force is controlled within the scope of feasible, it is particularly suitable
In the waterproofing applications of the duct pieces of shield tunnel seam high water pressure resistant of high hydraulic pressure.
2nd, assembly force is small：By to the first exhausting hole, the restriction of the second exhausting hole and Circularhole diameter size and hole cloth
Put, make sealing gasket compressible in an initial condition, the hole stress of semicircular arch is steady, is not susceptible to structural instability, effectively carries
The high waterproof ability of elastic sealing gasket, while because the circular hole of both sides is arranged, the assembly force needed for the step compression of both sides is reduced,
And then overall assembling power is controlled.
3rd, water resistance is good：By the size in adjustment column portion, the peak stress of seam contact surface can be effectively improved, is improved
The water resistance of seam.
4th, wide adaptation range：The utility model compound with regular structure, it is easy to make, it is adaptable to the duct pieces of shield tunnel of high hydraulic pressure
Seam waterproof, the high shield tunnel of abutment joint waterproof requirement such as the more river that is particularly suitable for use in is over strait, deep layer draining.
Brief description of the drawings
Fig. 1 is the sectional view of elastic sealing gasket of the present utility model.
Fig. 2 is the utility model tunnel duct piece mounting structure schematic diagram.
Fig. 3 be section under compression in the middle of the stress diagram that effectively plays a role of post portion.
Fig. 4 is contact stress peak Distribution figure.
Wherein, 1, sealing pad body, the 111, first exhausting hole, the 112, second exhausting hole, 12, circular hole, the 13, first groove,
14th, the second groove, 15, post portion, 16, end.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Illustrate embodiment of the present utility model below by way of specific instantiation, those skilled in the art can be by this theory
Content disclosed by bright book understands other advantages of the present utility model and effect easily.The utility model can also be by addition
Different embodiments are embodied or practiced, and the various details in this specification can also be based on different viewpoints with answering
With, without departing from it is of the present utility model spirit under carry out various modifications or alterations.
It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to coordinate specification to be taken off
The content shown, so that those skilled in the art is understood with reading, is not limited to the enforceable restriction bar of the utility model
Part, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influenceing
Under effect that the utility model can be generated and the purpose that can reach, all should still it fall in the technology disclosed in the utility model
In the range of Rong get Neng is covered.
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment：
As illustrated in fig. 1 and 2, figure is a kind of bullet for being applied to the more duct pieces of shield tunnel seam crossing such as over strait, deep layer draining in river
Property sealing gasket cross section structure schematic diagram, the elastic sealing gasket is arranged on the section of jurisdiction of tunnel-liner, including with parallel up and down
Upper surface and lower surface sealing pad body 1, sealing pad body 1 be made up of ethylene propylene diene rubber, upper surface is sealing gasket joining
Contacting surface, lower surface is section of jurisdiction contact surface, and the line at upper surface midpoint and lower surface midpoint is the symmetry axis of elastic sealing gasket, upper end
Face length is 37mm, and lower surface length is 44mm, and two ends 16 are a broken line, the bending point of broken line in left and right sides outline
Be 5.5mm with the horizontal range of the end points of the upper surface nearest with it, and the end points of the lower surface nearest with it horizontal range
It is symmetrical on lower surface to be provided with the be located on the line of midpoint first recessed of compression stress when being used to reduce sealing gasket assembling for 3mm
Groove 13 and the second groove 14 of both sides, the first groove 13 are in inverted U, by one section of circular arc and two linears tangent with circular arc
Into arc diameter is 7mm, and the bottom outside of the first groove 13 is 18mm with sealing gasket bottom outside distance；Second groove 14 is in U
Type, is formed, arc diameter is 6.5mm, and groove 14 is symmetrically distributed in sealing by one section of circular arc with two straight lines tangent with circular arc
The both sides of copy for the record or for reproduction body 1, the bottom outside of the second groove 14 is 4.5mm with sealing gasket bottom outside distance.
The first exhausting hole 111 and the second exhausting hole 112 are sequentially provided with sealing pad body 1, two ends 16, which are provided with, to be divided
Not She You a circular hole 12, the first exhausting hole 111 has 3 arched door type holes, and the second exhausting hole has 3 inversion arched door type holes, owns
Hole on symmetrical axial symmetry, the centre of form line of the first exhausting hole 111, the centre of form line of the second exhausting hole 112 and circular hole 12 are justified
Heart line is parallel with upper surface.
The summit line of first exhausting hole 111 and the vertical range of upper surface are 1.5mm, the summit of the second exhausting hole 112
The vertical range of line and lower surface is 9.7mm, and the circle center line connecting of circular hole 12 and the vertical range of lower surface are 7mm.Its hogging
The a diameter of 6.6mm of top arc in gate hole, waist straight line segment length 1mm, a diameter of 2.6mm of corner transition arc, bottom straight line
Segment length is 4mm, and the second exhausting hole 112 and the first exhausting hole 111 are on horizontal axial symmetry, and bore hole size is identical.Circular hole 12 it is straight
Footpath is 4.5mm.Post portion 15 is symmetrically distributed in the symmetry axis both sides of sealing pad body 1, and the contact width of itself and lower surface is 6mm.
As shown in figure 3, embodiment section described in this patent under compression in the middle of cylinder effectively play a role,
So as to obtain contact stress peak Distribution as shown in Figure 4.
Fig. 3 illustrates the Mises stress point in the case of a pair of sealing gaskets are necessarily compressed in concrete pipe sheet groove
Butut, is known, columnar part stress is higher, assume responsibility for larger a part of content, have effectively achieved the difference of stress by scheming
Distribution, so as to ensure that the contact stress between two sealing gaskets has larger peak value to produce.
Fig. 4 is the distribution of contact figure of sealing gasket joining contacting surface, because of the arrangement of cylinder so that the contact surface of corresponding position
Obvious peak stress is generated, theoretical according to the waterproofing design of sealing gasket, the peak value is advantageous to improve the anti-of sealing gasket
Aqueous energy.
Therefore, the embodiment section described in this patent under compression in the middle of cylinder effectively play a role, obtain
Contact stress peak Distribution as shown in Figure 4 to also show its water resistance excellent.
Elastic sealing gasket requirement can be used shield assembled equipment that sealing gasket is depressed into closure state in assembling, in this example
In be closure state when i.e. double sealing pad decrement reaches 12mm.Elastic sealing gasket of good performance should possess in closure state
Under the corresponding less performance of assembly force, to ensure the stability of concrete groove, it is adaptable to high hydraulic pressure shield tunnel seam prevent
The elastic sealing gasket of water must control its assembly force numerical value within the specific limits, to adapt to the assembled ability of existing shield machine.
Above-described embodiment only illustrative principle of the present utility model and its effect are new not for this practicality is limited
Type.Any person skilled in the art can all be carried out without prejudice under spirit and scope of the present utility model to above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in the utility model
God and all equivalent modifications completed under technological thought or change, should be covered by claim of the present utility model.
Claims (10)
1. a kind of high hydraulic pressure shield tunnel seam waterproof sealing structure, including it is separately mounted to the bullet at adjacent tunnel segment joint
Property sealing gasket, the lower surface of the elastic sealing gasket is arranged in the mounting groove in tunnel duct piece seam, and upper surface mutually compresses and connect
Touch, it is characterised in that described elastic sealing gasket is with the symmetrical class trapezium structure of upper and lower end face midpoint line, the elastic packing
Pad includes sealing pad body (1) and is integrally formed with sealing pad body (1) and is arranged on the end on lower surface (16) and post
The first exhausting hole (111) and the second exhausting hole (112), described end are provided with portion (15), described sealing pad body (1) side by side
Portion (16) is arranged between the left and right sides of elastic sealing gasket, both side ends (16) and opens up multiple inverted U-shaped grooves, multiple inverted U-shaped
Formed between groove on multiple post portions (15), described end (16) and be further opened with circular hole (12).
2. a kind of high hydraulic pressure shield tunnel seam waterproof sealing structure according to claim 1, it is characterised in that described
First exhausting hole (111) includes three arched door type through holes, and described the second exhausting hole (112) includes three and the first exhausting hole
(111) shape of through holes included is identical and inverted arched door type through hole.
3. a kind of high hydraulic pressure shield tunnel seam waterproof sealing structure according to claim 2, it is characterised in that described
First exhausting hole (111) and the second exhausting hole (112) include through hole the centre of form and multiple inverted U-shaped grooves the centre of form it is orthogonal thereto
Distribution.
4. a kind of high hydraulic pressure shield tunnel seam waterproof sealing structure according to claim 1, it is characterised in that described
Profile of the end (16) in the left and right sides is a fold-line-shaped protruded, and prominent part is provided with circular hole (12).
5. a kind of high hydraulic pressure shield tunnel seam waterproof sealing structure according to claim 1, it is characterised in that described
Inverted U-shaped groove includes the first groove (13) being located on the line of midpoint and multiple the first groove (13) both sides of being symmetricly set on
Second groove (14).
6. a kind of high hydraulic pressure shield tunnel seam waterproof sealing structure according to claim 1, it is characterised in that described
Inverted U-shaped channel section two straight lines tangent by one section of circular arc and with circular arc are constituted.
7. a kind of high hydraulic pressure shield tunnel seam waterproof sealing structure according to claim 3, it is characterised in that described
Centre of form line and end that centre of form line that first exhausting hole (111) includes through hole, the second exhausting hole (112) include through hole
The circle center line connecting of circular hole (12) is parallel with upper surface in portion (16).
8. a kind of high hydraulic pressure shield tunnel seam waterproof sealing structure according to claim 1, it is characterised in that described
Elastic sealing gasket is EPT rubber packing pad.
9. a kind of high hydraulic pressure shield tunnel seam waterproof sealing structure according to claim 1, it is characterised in that described
The width in post portion (15) is 4-9mm.
10. a kind of high hydraulic pressure shield tunnel seam waterproof sealing structure according to claim 1, it is characterised in that described
Circular hole (12) diameter range be 2-6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621393644.2U CN206409250U (en) | 2016-12-19 | 2016-12-19 | A kind of high hydraulic pressure shield tunnel seam waterproof sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621393644.2U CN206409250U (en) | 2016-12-19 | 2016-12-19 | A kind of high hydraulic pressure shield tunnel seam waterproof sealing structure |
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| CN206409250U true CN206409250U (en) | 2017-08-15 |
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| CN201621393644.2U Active CN206409250U (en) | 2016-12-19 | 2016-12-19 | A kind of high hydraulic pressure shield tunnel seam waterproof sealing structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523001A (en) * | 2016-12-19 | 2017-03-22 | 同济大学 | High water pressure shield tunnel joint waterproof seal structure |
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2016
- 2016-12-19 CN CN201621393644.2U patent/CN206409250U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523001A (en) * | 2016-12-19 | 2017-03-22 | 同济大学 | High water pressure shield tunnel joint waterproof seal structure |
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