CN104964798B - A kind of elastic sealing gasket of shield tunnel " yi word pattern " watertightness method of inspection - Google Patents
A kind of elastic sealing gasket of shield tunnel " yi word pattern " watertightness method of inspection Download PDFInfo
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- CN104964798B CN104964798B CN201510411231.6A CN201510411231A CN104964798B CN 104964798 B CN104964798 B CN 104964798B CN 201510411231 A CN201510411231 A CN 201510411231A CN 104964798 B CN104964798 B CN 104964798B
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- sealing gasket
- elastic sealing
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- shield tunnel
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Abstract
The invention discloses a kind of elastic sealing gasket of shield tunnel " yi word pattern " watertightness verifying attachment, this verifying attachment includes one piece of rigid strip floor and four pieces of stiffener plate；Wherein, rigid strip floor is made up of mainboard and a pair floor, and a pair floor is respectively symmetrically the both sides being arranged at described mainboard waist.The application uses elastic sealing gasket of shield tunnel " yi word pattern " the watertightness verifying attachment directly fitted with concrete, expand the limitation only relating in existing method of testing investigate elastic sealing gasket with steel form contact surface permeance property, Test And Research Work can be carried out for elastic sealing gasket and concrete surface permeance property, in addition, the verifying attachment of the application can support the use by instrument concrete impervious with now widely used plain edition, reduces processing cost.
Description
Technical field
The present invention relates to Tunnel Engineering technical field, particularly relate to one and directly fit with concrete for measuring
The method of inspection of elastic sealing gasket of shield tunnel " yi word pattern " watertightness.
Background technology
There is substantial amounts of seam between shield tunnel lining segment, be presently mainly by by EPDM bullet
Property sealing gasket paste and be squeezed in segment prefabricated groove the intended waterproof effect of acquisition.The waterproof effect of present stage
Really manifold overtesting is simulated or calculates verifying.
In the test that scholar is done at home, the basic method replacing concrete groove with steel groove that uses, close
The border of packing and friction condition hardly result in satisfied.Existing national standards " high polymer waterproof material the 4th
Point: shield tunnel section of jurisdiction rubber gasket " in (GB 18173.4-2010) to water pressure resistance simulation test
Method has carried out detailed discussion, utilizes the water pressure resistance testing device of simulation pipe sheet assembling seam, measures and seals
Pad the hydraulic pressure force value can born when the wrong trace of design and joint open.In Publication No. CN 101929911A
State's patent disclosure a kind of elastic sealing gasket of shield tunnel " yi word pattern " watertightness verifying attachment, can be effective
Simulation section of jurisdiction is the water proof case of elastic sealing gasket in the case of different joint open and faulting of slab ends amount.But above-mentioned test
Method only simulates the sealing effectiveness in the case of elastic sealing gasket is fitted with steel deck-plate, with actual condition Elastic
Sealing effectiveness in the case of sealing gasket is fitted with concrete has certain difference.
Therefore, how to solve the problems referred to above to become those skilled in the art and need badly and solve the technical problem that.
Summary of the invention
For problem present in background technology, it is an object of the invention to provide a kind of shield tunnel elasticity close
Packing " yi word pattern " the watertightness method of inspection, the application uses the shield tunnel bullet directly fitted with concrete
Property sealing gasket " yi word pattern " the watertightness method of inspection, expanded existing method of testing only relates to investigate elasticity
Sealing gasket and the limitation of steel form contact surface permeance property, can contact with concrete for elastic sealing gasket
Face permeance property carries out Test And Research Work, additionally, the verifying attachment of the application can be widely used at present
The concrete impervious instrument of plain edition support the use, reduce processing cost.
It is an object of the invention to be achieved through the following technical solutions:
A kind of elastic sealing gasket of shield tunnel " yi word pattern " watertightness method of inspection, the described method of inspection includes
Following steps:
1) use in country's working standard about a diameter of in the requirement molding of concrete permeability resistance mould
175mm, under a diameter of 185mm, the filled circles mesa-shaped concrete sample of a height of 150mm；
2) use rigid strip floor and step 1) in the concrete sample of molding assemble, after maintenance form removal
It is two and carries fluted half round table-like concret block；Wherein, described rigid strip floor is by mainboard and a pair
Floor is constituted, and the pair of floor is respectively symmetrically the both sides being arranged at described mainboard waist；
3), after arriving curing age, taking-up concrete sample is the cleanest by surface wipes；Two will processed
Elastic sealing gasket loads in the groove of two block concrete samples, and four pieces of stiffener plate are respectively placed in two pieces mix
Solidifying soil sample seam crossing；
4) test specimen sealing is carried out；
5) start Anti-leakage instrument, under pressure water action, observe the end face situation of concrete sample.
Further, step 2) described in the vertical section of mainboard be trapezoidal, the width 175mm suitable for reading of described mainboard,
End opening width 185mm, highly 150mm, the thickness of mainboard sets according to elastic sealing gasket of shield tunnel joint open
Fixed, for 2mm～12mm.
Further, step 2) described in floor cross section be isosceles trapezoid, the size of floor is according to sealing gasket
Cross dimensions sets, and the thickness of each floor is 14mm～36mm, and outer width is 30mm～45mm,
Insied width is 35mm～50mm.
Further, described stiffener plate is the subset of described mainboard, i.e. its length and width is contained in described master
Plate, thickness are identical with described mainboard thickness.
The present invention has a following positive technique effect:
Elastic sealing gasket of shield tunnel " yi word pattern " watertightness that a kind of and concrete of the present invention is directly fitted
The method of inspection, one is to have expanded to only relate in existing method of testing investigate elastic sealing gasket and steel form contact surface
The limitation of permeance property, can carry out test for elastic sealing gasket with concrete surface permeance property and grind
Study carefully work, preferably simulate sealing gasket boundary condition in Practical Project, evaluation index the most objective with
Rationally；Two is to support the use by instrument concrete impervious with now widely used plain edition, reduces processing
Cost.The assay method that the present invention provides have, equipment more consistent with Practical Project boundary condition simple,
The advantage such as easy to operate, shaping work amount is little, measured result is good, it is adaptable to carry out shield tunnel elastic sealing
Pad " yi word pattern " waterproof test research work.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of the present invention；
Fig. 2 is the front view of the present invention；
Fig. 3 is the right view of the present invention；
Fig. 4 is the axonometric chart of the formation of concrete sample of the present invention.
Detailed description of the invention
Below, with reference to accompanying drawing, more fully illustrating the present invention, accompanying drawing acceptance of the bid shows the present invention's
Exemplary embodiment.But, the present invention can be presented as multiple multi-form, is not construed as being confined to
Here the exemplary embodiment described.And it is to provide these embodiments, so that the present invention is fully and completely,
And will fully convey the scope of the invention to those of ordinary skill in the art.
For ease of explanation, here can use such as " on ", the space relative terms such as D score " left " " right ",
For shown in explanatory diagram a element or feature relative to another element or the relation of feature.Should manage
Solving, in addition to the orientation shown in figure, spatial terminology is intended to include that device is in use or operation
Different azimuth.Such as, if the device in figure is squeezed, it is stated as being positioned at other elements or feature D score
Element will be located into other elements or feature " on ".Therefore, exemplary term D score can comprise and
Lower both orientation.Device can otherwise position (90-degree rotation or be positioned at other orientation), institute here
Space relatively illustrate correspondingly to explain.
As Figure 1-4, this application provides a kind of elastic sealing gasket of shield tunnel watertightness verifying attachment,
This device is made up of one piece of rigid strip floor and four pieces of stiffener plate 2.Wherein, rigidity mainboard with ribbing 1 is suitable for reading
Width 175mm, end opening width 185mm, highly 150mm.The thickness of rigid strip floor mainboard 1 according to
Depending on elastic sealing gasket of shield tunnel joint open, between 2mm～12mm；A pair floor is arranged in mainboard both sides
3, floor 3 center size is directed at, and cross section is isosceles trapezoid, depending on size is according to the cross dimensions of sealing gasket,
Thickness is between 14mm～36mm, and outer width is between 30mm～45mm, and insied width is 35mm～50mm.
Stiffener plate 2 is that the subset of rigid strip floor mainboard 1 part, i.e. its length and width are contained in described rigidity
Ribbed plate mainboard 1 part, thickness is identical with rigid strip floor mainboard 1 part.
At present, the design process of elastic sealing gasket is still in Experience Design stage, the waterproof inspection of existing sealing gasket
Test experiment device mostly also is the anti-watery of simulation sealing gasket and cover plate contact surface or two sealing gasket self-contact faces
Condition, is not inconsistent with Practical Project situation, is difficult to have appraisement system accurately.
Using can be with a diameter of in molding about concrete permeability resistance mould in country's working standard
175mm, under a diameter of 185mm, the filled circles mesa-shaped concrete sample of a height of 150mm.Use this
Bright rigid strip floor assembles with above-mentioned concrete permeability resistance mould, formation of concrete sample, supports
After protecting form removal it is two and carries fluted half round table-like concret block, the total thickness of two block concrete sample grooves
Degree is the gross thickness of the floor of rigid strip floor, and the thickness of two block concrete sample seam crossings is rigid strip
The thickness (as shown in Figure 4) of floor mainboard.
After arriving curing age, taking-up concrete sample is the cleanest by surface wipes.State shown in the present invention
For normally splicing state, not having position deviation between i.e. two block concrete samples, groove center size is directed at,
Process two elastic sealing gaskets are loaded in the groove of two block concrete samples.Now between concrete sample
Not having Guan Bi to put in place, the width of seam crossing is section of jurisdiction joint open.Thickness and rigid strip due to stiffener plate
Four pieces of stiffener plate are now respectively placed in two block concrete sample seams by the consistency of thickness of floor main board
Place, can accurately simulate the elastic sealing gasket test situation when specific joint open state.
Carry out test specimen sealing subsequently.When sealing with paraffin, at the paraffin of sample surrounding package one melting layer, so
Afterwards with prelum press-in in the die trial that baking oven or electric furnace preheat, described die trial is in concrete impermeability test
General die trial.Making sample concordant with at the bottom of die trial, die trial temperature is recovered to pressure relief during room temperature, fills subsequently
Enter concrete impervious instrument to test.
Start Anti-leakage instrument, under pressure water action, observe the end face situation of concrete sample.If two block concretes
Between to have infiltration can determine that be that two elastic sealing gasket joint faces or elastic sealing gasket occur with concrete surface
Infiltration, records now water pressure and the one-tenth-value thickness 1/10 of floor；If there being infiltration between concrete and urceolus, show examination
Sample is bad with the sealing property of die trial, need to test after again sealing by above-mentioned sealing step.
To certain specific elastic sealing gasket, change the mainboard thickness of rigid strip floor in this invention device, weight
Multiple infiltration test, can obtain the water-resistant pressure of elastic sealing gasket under different joint open state.
It is described above simply to illustrate that the present invention, it is understood that to the invention is not limited in above example,
Meet the various variants of inventive concept all within protection scope of the present invention.
Claims (4)
1. elastic sealing gasket of shield tunnel " yi word pattern " watertightness method of inspection, it is characterised in that the described method of inspection comprises the steps:
1) use country working standard in about 175mm a diameter of in the requirement molding of concrete permeability resistance mould, under a diameter of 185mm, the filled circles mesa-shaped concrete sample of a height of 150mm；
2) use rigid strip floor to assemble with the concrete sample of molding in step 1), after maintenance form removal be two and carry fluted half round table-like concret block；Wherein, described rigid strip floor is made up of mainboard and a pair floor, and the pair of floor is respectively symmetrically the both sides being arranged at described mainboard waist；
3), after arriving curing age, taking-up concrete sample is the cleanest by surface wipes；Process two elastic sealing gaskets are loaded in the groove of two block concrete samples, and four pieces of stiffener plate are respectively placed in two block concrete sample seam crossings；
4) test specimen sealing is carried out；
5) start Anti-leakage instrument, under pressure water action, observe the end face situation of concrete sample.
Elastic sealing gasket of shield tunnel the most according to claim 1 " yi word pattern " the watertightness method of inspection, it is characterized in that, step 2) described in the vertical section of mainboard be trapezoidal, the width 175mm suitable for reading of described mainboard, end opening width 185mm, highly 150mm, the thickness of mainboard sets according to elastic sealing gasket of shield tunnel joint open, for 2mm ~ 12mm.
Elastic sealing gasket of shield tunnel the most according to claim 1 " yi word pattern " the watertightness method of inspection, it is characterized in that, step 2) described in floor cross section be isosceles trapezoid, the size of floor sets according to the cross dimensions of sealing gasket, the thickness of each floor is 14mm ~ 36mm, outer width is 30mm ~ 45mm, and insied width is 35mm ~ 50mm.
It is identical with described mainboard thickness that elastic sealing gasket of shield tunnel the most according to claim 1 " yi word pattern " the watertightness method of inspection, it is characterised in that described stiffener plate is the subset of described mainboard, i.e. its length and width are contained in described mainboard, thickness.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510411231.6A CN104964798B (en) | 2015-07-14 | 2015-07-14 | A kind of elastic sealing gasket of shield tunnel " yi word pattern " watertightness method of inspection |
Applications Claiming Priority (1)
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| CN201510411231.6A CN104964798B (en) | 2015-07-14 | 2015-07-14 | A kind of elastic sealing gasket of shield tunnel " yi word pattern " watertightness method of inspection |
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| CN104964798A CN104964798A (en) | 2015-10-07 |
| CN104964798B true CN104964798B (en) | 2016-09-14 |
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| CN107121245A (en) * | 2017-04-26 | 2017-09-01 | 同济大学 | Shield tunnel lining segment two seals pad waterproof ability test device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3912765A1 (en) * | 1989-04-19 | 1990-10-25 | Werner Mueller | Sealant swollen by water for concrete sewage pipe - obtd. by curing (meth)acrylate monomer, polymer of bitumen dispersion, swelling filler etc. |
| EP1116766B1 (en) * | 1998-07-09 | 2003-10-29 | SANYO CHEMICAL INDUSTRIES, Ltd. | Material for water cut-off and method for cut-off of water |
| JP4230618B2 (en) * | 1999-06-23 | 2009-02-25 | 早川ゴム株式会社 | Water-stop joint structure |
| CN201297177Y (en) * | 2008-12-03 | 2009-08-26 | 衡水骏达橡胶有限公司 | A shield tunneling duct piece elastic gasket |
| CN101666700B (en) * | 2009-09-21 | 2012-11-21 | 南京工业大学 | Testing method of leakage rate of high-temperature sealing gasket and testing device thereof |
| CN101667220B (en) * | 2009-09-22 | 2011-04-27 | 同济大学 | Simulation method of shield tunnel joint structure |
| CN101929911B (en) * | 2010-04-14 | 2012-11-07 | 同济大学 | In-line water tightness testing device for elastic sealing gasket of shield tunnel |
| CN102778337A (en) * | 2012-07-18 | 2012-11-14 | 同济大学 | Waterproof ability testing system of three-directional loaded shield tunnel duct piece joint seam |
| CN204831705U (en) * | 2015-07-14 | 2015-12-02 | 水利部交通运输部国家能源局南京水利科学研究院 | Shield tunnel elastic gasket " a style of calligraphy " water proofness verifying attachment |
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