CN104964797B - A kind of elastic sealing gasket of shield tunnel " T font " watertightness method of inspection - Google Patents

A kind of elastic sealing gasket of shield tunnel " T font " watertightness method of inspection Download PDF

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Publication number
CN104964797B
CN104964797B CN201510411144.0A CN201510411144A CN104964797B CN 104964797 B CN104964797 B CN 104964797B CN 201510411144 A CN201510411144 A CN 201510411144A CN 104964797 B CN104964797 B CN 104964797B
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sealing gasket
elastic sealing
floor
shield tunnel
mainboard
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CN104964797A (en
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陆采荣
刘伟宝
梅国兴
王珩
戈雪良
杨虎
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Nanjing Hydraulic Research Institute of National Energy Administration Ministry of Transport Ministry of Water Resources
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Nanjing Hydraulic Research Institute of National Energy Administration Ministry of Transport Ministry of Water Resources
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Abstract

The invention discloses a kind of T-shaped water tightness test device of shield tunnel elastic sealing gasket, this verifying attachment includes one piece of rigid strip floor and six pieces of stiffener plate;Wherein, rigid strip floor is made up of mainboard and floor, and mainboard becomes " T font " to arrange;Floor is respectively symmetrically the both sides being arranged at described mainboard waist.The application uses the T-shaped water tightness test device of shield tunnel elastic sealing gasket 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

A kind of elastic sealing gasket of shield tunnel " T font " watertightness method of inspection
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 " T font " 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 101929910A A kind of T-shaped water tightness test device of shield tunnel elastic sealing gasket of state's patent disclosure, 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 for measuring and coagulation The method of inspection of soil directly elastic sealing gasket of shield tunnel " T font " watertightness of laminating, the application uses Elastic sealing gasket of shield tunnel " T font " the watertightness method of inspection directly fitted with concrete, expands Existing method of testing only relates to the limitation investigating elastic sealing gasket with steel form contact surface permeance property, can To carry out Test And Research Work for elastic sealing gasket and concrete surface permeance property, additionally, the application Verifying attachment can support the use by instrument concrete impervious with now widely used plain edition, 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 " T font " 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 Be three with the fluted half round table-like or concret block of quadrant mesa-shaped;Wherein, described rigidity Ribbed plate is made up of mainboard and floor, and described mainboard becomes " T font " to arrange;Described floor is respectively symmetrically and sets It is placed in the both sides of described mainboard waist;
3), after arriving curing age, taking-up concrete sample is the cleanest by surface wipes;Three will processed Elastic sealing gasket loads in the groove of two block concrete samples, and six 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, flange portions width suitable for reading 175mm, the end opening width 185mm of described mainboard, highly 150mm;Web part width suitable for reading 87.5mm, end opening width 92.5mm, highly 150mm;Mainboard Thickness sets according to elastic sealing gasket of shield tunnel joint open, for 2mm~12mm.
Further, described floor cross section is isosceles trapezoid, and the size of floor sets according to the cross dimensions of sealing gasket Fixed, the thickness of floor is 14mm~36mm, and outer width is 30mm~45mm, and 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 " T font " 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 " T font " 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 six pieces of stiffener plate 2.Rigid strip floor mainboard 1 flange portions Width 175mm suitable for reading, end opening width 185mm, highly 150mm;Web part width suitable for reading 87.5mm, End opening width 92.5mm, highly 150mm.The thickness of rigid strip floor mainboard 1 is elastic according to shield tunnel Depending on sealing gasket joint open, between 2mm~12mm;A pair floor 3, floor 3 are arranged in mainboard 1 both sides Center size alignment, cross section is isosceles trapezoid, depending on size is according to the cross dimensions of sealing gasket, single floor 3 thickness are between 14mm~36mm, and outer width is between 30mm~45mm, and insied width is 35mm~50mm.Described stiffener plate 2 is the subset of rigid strip floor mainboard 1, i.e. its length and width bag Being contained in the mainboard 1 of rigid strip floor, thickness is identical with the mainboard 1 of rigid strip floor.
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 maintenance After form removal be three with the fluted half round table-like or concret block of quadrant mesa-shaped, three pieces of coagulations Between soil sample, the thickness of groove is the floor thickness of rigid strip floor, three block concrete sample seam crossings it Thickness is the thickness (as shown in Figure 4) of rigid strip 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. three block concrete samples, groove center size is directed at, In " T font ".Three elastic sealing gaskets (sealing gasket containing " yi word pattern " and two that will process The sealing gasket of " L font ") load in the groove of two block concrete samples.Now do not have between concrete sample Guan Bi puts in place, and the width of seam crossing is section of jurisdiction joint open.Thickness and rigid strip due to described stiffener plate Six pieces of stiffener plate are now respectively placed in three 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 three block concretes Between seam crossing have infiltration can determine that to be three elastic sealing gasket joint faces or elastic sealing gasket contacts with concrete Seeping water in face, records now water pressure and the one-tenth-value thickness 1/10 of floor;If there being infiltration between concrete and urceolus, Show that sample is bad with the sealing property of die trial, need to test after again sealing by above-mentioned sealing step.
Changing the thickness of rigid strip floor mainboard, repeat the above steps is carried out infiltration test, can be obtained difference The water-resistant pressure of elastic sealing gasket under 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 " T font " watertightness method of inspection, it is characterised in that the described method of inspection includes Following steps:
1) use country working standard in about 175mm a diameter of in the requirement molding of concrete permeability resistance mould, lower directly Footpath is 185mm, the filled circles mesa-shaped concrete sample of a height of 150mm;
2) use rigid strip floor assemble with the concrete sample of molding in step 1), after maintenance form removal be three with ditch The half round table-like or concret block of quadrant mesa-shaped of groove;Wherein, described rigid strip floor is made up of mainboard and floor, Described mainboard becomes " T font " to arrange;Described 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;Three elastic sealing gaskets that will process Load in the groove of two block concrete samples, and six 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 " T font " the watertightness method of inspection, it is characterised in that The flange portions width suitable for reading 175mm of described mainboard, end opening width 185mm, highly 150mm;Web part width suitable for reading 87.5mm, end opening width 92.5mm, 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 " T font " the watertightness method of inspection, it is characterised in that Described floor cross section is isosceles trapezoid, and the size of floor sets according to the cross dimensions of sealing gasket, the thickness of floor be 14mm ~ 36mm, outer width is 30mm ~ 45mm, and insied width is 35mm ~ 50mm.
Elastic sealing gasket of shield tunnel the most according to claim 1 " T font " 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 is contained in described mainboard, thickness and described mainboard thickness Identical.
CN201510411144.0A 2015-07-14 2015-07-14 A kind of elastic sealing gasket of shield tunnel " T font " watertightness method of inspection Active CN104964797B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105738220B (en) * 2016-04-12 2018-11-09 天津大学 Consider the section of jurisdiction elastic sealing gasket waterproof test method that the soil body influences
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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* Cited by examiner, † Cited by third party
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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.
DE69912467T2 (en) * 1998-07-09 2004-08-19 Sanyo Chemical Industries, Ltd. SEALANT AND METHOD FOR SEALING AGAINST 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
CN101929910B (en) * 2010-04-14 2012-02-29 同济大学 T-shaped water tightness test device of shield tunnel elastic sealing gasket
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
CN104677575B (en) * 2015-02-16 2017-12-12 中交第二航务工程局有限公司 A kind of waterstop watertight test method
CN204855096U (en) * 2015-07-14 2015-12-09 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 " T style of calligraphy " water proofness verifying attachment

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