CN105157922B - A kind of elastic sealing gasket of shield tunnel is the watertightness method of inspection when different faulting of slab ends amount - Google Patents
A kind of elastic sealing gasket of shield tunnel is the watertightness method of inspection when different faulting of slab ends amount Download PDFInfo
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- CN105157922B CN105157922B CN201510411348.4A CN201510411348A CN105157922B CN 105157922 B CN105157922 B CN 105157922B CN 201510411348 A CN201510411348 A CN 201510411348A CN 105157922 B CN105157922 B CN 105157922B
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Abstract
The invention discloses a kind of elastic sealing gasket of shield tunnel watertightness verifying attachment when different faulting of slab ends amount, 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 staggers respectively and be arranged at the both sides of mainboard waist；The offset of a pair floor is the faulting of slab ends amount of elastic sealing gasket, and described faulting of slab ends amount is 1mm ~ 14mm.The application uses elastic sealing gasket of shield tunnel watertightness verifying attachment when different faulting of slab ends amount, 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, preferably simulating sealing gasket boundary condition in Practical Project, evaluation index is the most objective and reasonable；Additionally, the verifying attachment of the application can support the use by instrument concrete impervious with now widely used plain edition, reduce 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
Elastic sealing gasket of shield tunnel method of inspection of watertightness when different faulting of slab ends amount.
Background technology
During shield tunnel construction and subsequent sedimentation, the length travel between concrete pipe sheet is referred to as faulting of slab ends.
In shield tunnel construction, section of jurisdiction scale error, uneven, the surrounding soil layer diversity of assembly process top power etc.
Factors all can produce faulting of slab ends amount, and then the waterproof of engineering and safe operation are brought hidden danger.
Domestic scholars the most substantially uses and replaces the method for concrete groove to carry out shield tunnel elasticity with steel groove
The water resistance research of sealing gasket, the border of sealing gasket and friction condition hardly result in satisfied.Existing country mark
Accurate " high polymer waterproof material the 4th part: shield tunnel section of jurisdiction rubber gasket " (GB
In 18173.4-2010), water pressure resistance simulation experiment method is carried out detailed discussion, has utilized simulation pipe sheet assembling
The water pressure resistance testing device of seam, measures the water pressure that sealing gasket can bear when the wrong trace of design and joint open
Value.Publication No. is that the Chinese patent of CN 101929911A discloses a kind of elastic sealing gasket of shield tunnel watertight
Property verifying attachment, can effectively simulate section of jurisdiction elastic sealing gasket anti-in the case of different joint open and faulting of slab ends amount
Regimen condition.But above-mentioned test method only simulates the sealing between elastic sealing gasket and cover plate in the case of laminating
Effect, the sealing effectiveness in the case of fitting with concrete with actual condition Elastic sealing gasket 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 is the watertightness method of inspection when different faulting of slab ends amount, and the application uses elastic sealing gasket of shield tunnel in difference
Watertightness method of inspection during faulting of slab ends amount, has expanded and has only related in existing method of testing investigate elastic sealing gasket and steel
The limitation of template contacts face permeance property, can be for elastic sealing gasket and concrete surface permeance property
Carry out Test And Research Work, preferably simulate sealing gasket boundary condition in Practical Project, evaluation index
The most objective and reasonable；Additionally, the verifying attachment of the application can be with now widely used plain edition coagulation
Soil Anti-leakage instrument supports the use, and reduces 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 is the watertightness method of inspection, the described method of inspection when different faulting of slab ends amount
Comprise the 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 staggers respectively and is arranged at the both sides of described mainboard waist；The mistake of a pair floor
Opening amount is the faulting of slab ends amount of elastic sealing gasket, and described faulting of slab ends amount is 1mm～14mm；
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, the vertical section of described mainboard is trapezoidal, the width 175mm suitable for reading of described mainboard, end opening width
Degree 185mm, highly 150mm, the thickness of mainboard 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 each 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:
It is an advantage of the current invention that and use the elastic sealing gasket of shield tunnel directly fitted from concrete different
The method of inspection of watertightness during faulting of slab ends amount, one is to have expanded to only relate in existing method of testing investigate elastic packing
Pad and the limitation of steel form contact surface permeance property, can ooze with concrete surface for elastic sealing gasket
Performance carries out Test And Research Work thoroughly, preferably simulates sealing gasket boundary condition in Practical Project, comments
Valency index is the most objective and reasonable；Two be can instrument concrete impervious with now widely used plain edition supporting
Use, reduce processing cost.The assay method that the present invention provides has with Practical Project boundary condition more
The advantages such as unanimously, equipment is simple and convenient to operate, shaping work amount is little, measured result is good, it is adaptable to carry out
The elastic sealing gasket of shield tunnel waterproof test research work when different faulting of slab ends amounts and different joint open.
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, a kind of elastic sealing gasket of shield tunnel of this device watertightness when different faulting of slab ends amount
Verifying attachment is made up of one piece of rigid strip floor and four pieces of stiffener plate 2.Rigid strip floor mainboard 1 width suitable for reading
Degree 175mm, end opening width 185mm, highly 150mm.The thickness of rigid strip floor mainboard 1 is according to shield
Depending on structure tunnel elastic sealing gasket joint open, between 2mm～12mm；A pair floor is arranged in mainboard 1 both sides
3, the size misalignment of floor 3 center, departure is between 1mm～14mm；Cross section is isosceles trapezoid, chi
Very little according to the cross dimensions of sealing gasket depending on, thickness is between 14mm～36mm, and outer width is
Between 30mm～45mm, insied width is 35mm～50mm.Stiffener plate 2 is rigid strip floor mainboard 1
Subset, i.e. its length and width is contained in described rigid strip floor mainboard 1, thickness and rigid strip floor master
Plate 1 is identical.
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
Splicing state for faulting of slab ends, i.e. two block concrete sample groove center size misalignment, grooved position deviation is
Between 1mm～14mm, therefore load the faulting of slab ends that two elastic sealing gaskets in groove exist 1mm～14mm
Amount.Now not having Guan Bi to put in place between concrete sample, the width of seam crossing is section of jurisdiction joint open.Due to institute
State the thickness of stiffener plate and the consistency of thickness of rigid strip floor main board, now four pieces of stiffener plate are divided
It is not placed in two block concrete sample seam crossings, can accurately simulate elastic sealing gasket in specific joint open state
Time test situation.
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, thus it is possible to vary the mainboard thickness of rigid strip floor in this invention device
And the faulting of slab ends amount of floor, repeat the above steps is carried out infiltration test, is obtained different joint open and different faulting of slab ends amount
The water-resistant pressure of elastic sealing gasket under 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 watertightness method of inspection when different faulting of slab ends amount, 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 staggers respectively and is arranged at the both sides of described mainboard waist；The offset of a pair floor is the faulting of slab ends amount of elastic sealing gasket, and described faulting of slab ends amount is 1mm ~ 14mm；
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.
2.
Elastic sealing gasket of shield tunnel according to claim 1 is the watertightness method of inspection when different faulting of slab ends amount, it is characterized in that, the vertical section of described mainboard is 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 is the watertightness method of inspection when different faulting of slab ends amount, it is characterized in that, described floor cross section is 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.
Elastic sealing gasket of shield tunnel the most according to claim 1 is the watertightness method of inspection when different faulting of slab ends amount, it is characterized in that, described stiffener plate is the subset of described mainboard, and i.e. to be contained in described mainboard, thickness identical with described mainboard thickness for its length and width.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510411348.4A CN105157922B (en) | 2015-07-14 | 2015-07-14 | A kind of elastic sealing gasket of shield tunnel is the watertightness method of inspection when different faulting of slab ends amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510411348.4A CN105157922B (en) | 2015-07-14 | 2015-07-14 | A kind of elastic sealing gasket of shield tunnel is the watertightness method of inspection when different faulting of slab ends amount |
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| Publication Number | Publication Date |
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| CN105157922A CN105157922A (en) | 2015-12-16 |
| CN105157922B true CN105157922B (en) | 2016-09-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
Family Cites Families (11)
| 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 |
| 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 |
| CN204831707U (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 is water proofness verifying attachment when wrong platform volume of difference |
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