CN106969884A - A kind of waterproof test method and device of tunnel duct piece elastic sealing gasket - Google Patents
A kind of waterproof test method and device of tunnel duct piece elastic sealing gasket Download PDFInfo
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- CN106969884A CN106969884A CN201710266185.4A CN201710266185A CN106969884A CN 106969884 A CN106969884 A CN 106969884A CN 201710266185 A CN201710266185 A CN 201710266185A CN 106969884 A CN106969884 A CN 106969884A
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- sealing gasket
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- General Physics & Mathematics (AREA)
- Lining And Supports For Tunnels (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of waterproof test method of tunnel duct piece elastic sealing gasket, include the testing stand base of S1 prefabricated band sealing gasket grooves；S2 makes the first pressing plate and the second pressing plate；S3 carries out two sealing gasket interface tests with the first pressing plate and base combination, determines the first water pressure resistance ability and leak mode of contact surface between two sealing gaskets；S4 carries out sealing gasket and trench wall interface test with the second pressing plate and base combination, determines the second water pressure resistance ability and leak mode of contact surface between sealing gasket and trench wall；S5 compares the first water pressure resistance ability and the second water pressure resistance ability, and less value is defined as into the maximum water pressure resistance ability of elastic sealing gasket, and its corresponding leak type is the mode for being defined as sealing gasket failure.The invention also discloses the waterproof test device of corresponding elastic sealing gasket.The present invention can accurately simulate the mechanical characteristics such as the deformation of segment joint elastic sealing gasket, stress in Practical Project, can true and accurate test and reflection elastic sealing gasket water resistance.
Description
Technical field
The invention belongs to waterproof technique field in section of jurisdiction in shield tunnel, and in particular to a kind of tunnel duct piece elastic sealing gasket
Waterproof test method and device.
Background technology
Shield tunnel is made up of reinforced concrete segment assembly, there are a large amount of seams, and percolating water is often sent out here
It is raw.Elastic sealing gasket at segment joint is the key of shield tunnel waterproof, need to ensure can have within Tunnel Design service life
Effect prevents the underground water outside tunnel from being penetrated between seam.
To verify the waterproof ability of seam elastic sealing gasket, typically need to carry out waterproof test before its production.It is existing
Elastic water-proof experiment can typically carry out the waterproof tests such as " one " word seam, " T " word seam, " ten " word seam.The waterproof test stitched with " T " word
Exemplified by, elastic sealing gasket is fixed in the joint model that 1 piece is plate and 2 pieces of " L " shaped steel testing stands are constituted by the experiment,
And the hole (as shown in Figure 1) consistent with section of jurisdiction elastic sealing gasket groove dimensions is set in specified location.During experiment, by adjusting
Joint open A between two testing stands and offset the B working condition that to simulate elastic sealing gasket different are saved, to verify in different hydraulic pressure
Under the conditions of elastic sealing gasket waterproof ability (as shown in accompanying drawing 2, accompanying drawing 3).
But the experiment still has certain defect：(1) the water breakthrough elastic packing in Practical Project outside structure is lined with two kinds
Approach, one kind is water penetrates into the middle of two elastic sealing gaskets, and another is water along between elastic sealing gasket and groove concrete
Contact surface penetrates into.Existing test method and device can not distinguish the approach of sealing gasket waterproof failure, it is impossible to determine the thin of waterproof
Weak position, is unfavorable for the optimization of sealing gasket design.(2) steel testing stand and the concrete material of section of jurisdiction in existing experimental rig
Itself has greater stiffness difference, and in the case where structure stress is larger, the deformation of trench wall is for elastic sealing gasket waterproof ability
Influence can not embody in test, cause result of the test relatively dangerous.(3) steel testing stand and the concrete of section of jurisdiction be each
Stress distribution from the adhesion strength of elastic sealing gasket and after being pressurized is different, therefore to be unable to true and accurate anti-for result of the test
Actual water resistance is reflected, is remained with Practical Project in certain gap.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of tunnel duct piece elastic sealing gasket
Waterproof test method and device, it is by the Optimal improvements to test technology, in combination with the structure optimization to experimental rig, from
And the mechanical characteristics such as the deformation of segment joint elastic sealing gasket, stress in Practical Project can be accurately simulated, and then can be true
The water resistance of accurate test and reflection elastic sealing gasket.
To achieve the above object, according to one aspect of the present invention, there is provided a kind of waterproof of tunnel duct piece elastic sealing gasket
Test method, it is characterised in that comprise the following steps：
S1 according to actual tunnel segment structure sealing gasket groove dimensions and concrete grade, prefabricated band sealing gasket groove it is mixed
Solidifying soil testing stand base or the testing stand base with concrete similar material, wherein sealing gasket groove distance test (DT) platform base edge
Distance and groove width are consistent with actual segment joint；
S2 uses material identical with testing stand base making identical with testing stand understructure but without the first of water injection hole
Pressing plate, while making and first pressing plate is in the same size, flat platen without sealing gasket groove is used as the second pressing plate；
S3 carries out two sealing gasket interface tests with first pressing plate of with groove with base combination, i.e., in the first pressing plate
With place sealing gasket in the groove of base respectively, and the cemented side seam of two sealing gaskets is bonded using bonding agent by firm, adjustment first
The gap of pressing plate and base is to simulate seam joint open, and the dislocation distance of the first pressing plate of adjustment and base is to simulate section of jurisdiction spelling
Fill the faulting of slab ends amount produced；Apply hydraulic pressure step by step, and upper level hydraulic pressure is defined as to when occurring leak contact between two sealing gaskets
The first water pressure resistance ability in face, and determine that leak mode is that occur leak along two sealing gasket joining contacting surfaces infiltration path；
S4 carries out sealing gasket and trench wall interface test with second pressing plate of not with groove with base combination, that is, exists
Sealing gasket is put into the groove of base, adjusts the gap of the second pressing plate and base to simulate seam joint open, and adjustment second
The relative dislocation distance of pressing plate and base uses bonding agent by sealing gasket and second to simulate the faulting of slab ends amount of pipe sheet assembling generation
Pressing plate bonding is firm；Apply hydraulic pressure step by step and that upper level hydraulic pressure is defined as into sealing gasket and trench wall when occurring leak is indirectly
Second water pressure resistance ability of contacting surface, and determine that leak mode is that occur leak along between trench wall infiltration path；
S5 the first water pressure resistance abilities and the second water pressure resistance ability, and less value is defined as elastic sealing gasket
Maximum water pressure resistance ability, its corresponding leak type be defined as sealing gasket failure mode.
As a further improvement on the present invention, in the Hydraulic Process of application step by step in step S3 and S4, one-level hydraulic pressure is often added
First stablize a period of time, determine after no leak, then apply next stage hydraulic pressure.
As a further improvement on the present invention, second pressure plate structure is in addition to without sealing gasket groove, its structure and the
One pressing plate is identical.
As a further improvement on the present invention, the adhesive strength of sealing gasket and pressing plate or base can ensure in pressure process
Water flows out not at cemented side seam.
It is another aspect of this invention to provide that providing a kind of waterproof test device of tunnel duct piece elastic sealing gasket, its feature
It is, including：
Testing stand base with sealing gasket groove, it is according to the sealing gasket groove dimensions and concrete of actual tunnel segment structure
Grade by concrete or it is similar with concrete it is prefabricated form, wherein the sealing gasket groove distance test (DT) platform base edge
Distance and groove width are consistent with actual segment joint, are used to house sealing gasket in the sealing gasket groove；
With testing stand base material the first pressing plate of identical, its end face with testing stand base contacts and the testing stand bottom
Holder structure matching is identical but without water injection hole, is used to house sealing gasket in the corresponding sealing gasket groove of first pressing plate, for
It is corresponding with the sealing gasket in testing stand base to be bonded to carry out two sealing gasket interface tests；And
Second pressing plate, it is, itself and testing stand bottom in the same size but without the flat platen of sealing gasket groove with the first pressing plate
The tactile end face of seated connection is matched with the testing stand understructure, and second pressing plate is used for Nian Jie with the sealing gasket in testing stand base
Compress, to carry out sealing gasket and trench wall interface test with base combination.
As a further improvement on the present invention, second pressure plate structure is in addition to without sealing gasket groove, its structure and the
One pressing plate is identical.
As a further improvement on the present invention, the gap of first pressing plate or the second pressing plate and base is to simulate seam
Joint open, the dislocation distance of first pressing plate or the second pressing plate and base is to simulate the faulting of slab ends amount that pipe sheet assembling is produced.
In general, by the contemplated above technical scheme of the present invention compared with prior art, with following technology effect
Really：
(1) in the present invention program, according to the sealing gasket groove dimensions and concrete grade of actual tunnel segment structure, prefabricated band
The concrete test platform base of sealing gasket groove or the testing stand base of the material similar with concrete, wherein sealing gasket slot trough
Separating test platform base edge distance and groove width are consistent with actual segment joint, and its physical condition is actual more with engineering
It is close, it is more beneficial for the true and accurate of result of the test；
(2) in the present invention program, testing experiment is divided into the test of sealing gasket joining contacting surface and sealing gasket is contacted with groove in base
Two classes, and separately tested by different types of pressing plate respectively, the waterproof weak part of seam can be more accurately obtained, is obtained
Go out sealing gasket leak type and corresponding compression resistance；
(3) in the present invention program, testing experiment technique and the structure optimization of experimental rig by optimization, using with work
Cheng Shiji closer to mode, can accurately simulate the power such as the deformation of segment joint elastic sealing gasket, stress in Practical Project
Learn feature, and then can true and accurate test and reflection elastic sealing gasket water resistance.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the testing stand of sealing gasket experimental rig of the prior art；
Fig. 2 is a kind of structural representation of the testing stand of sealing gasket experimental rig of the prior art；
Fig. 3 carries out the schematic diagram of sealing gasket testing experiment for a kind of sealing gasket experimental rig of the prior art；
Fig. 4 is the structural representation of the testing stand of the sealing gasket experimental rig of one embodiment of the invention；
Fig. 5 is the schematic diagram that two sealing gasket interface tests are carried out using the sealing gasket experimental rig shown in Fig. 4；
Fig. 6 is the schematic diagram that sealing gasket and groove in base interface test are carried out with the sealing gasket experimental rig shown in Fig. 4；
In all of the figs, identical reference is used for representing identical element or structure, wherein：
1 '-steel base；
4 '-sealing gasket groove；
9 '-elastic sealing gasket；
1- testing stand bases；
2- slot troughs section of jurisdiction inward flange distance；
3- sealing gasket groove widths；
4- sealing gasket grooves；
5- pressure water injections hole；
The pressing plates of 6- first；
7- sections of jurisdiction joint open；
8- sections of jurisdiction faulting of slab ends amount；
9- elastic sealing gaskets；
10- sealing gasket cemented side seams；
11- along two sealing gasket joining contacting surfaces seep water path
The pressing plates of 12- second；
13- seeps water path along sealing gasket and trench wall
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As long as in addition, technical characteristic involved in each embodiment of invention described below is each other not
Constituting conflict can just be mutually combined.
Fig. 4 is the structural representation of the testing stand of the sealing gasket experimental rig of one embodiment of the invention, and Fig. 5 is to utilize figure
Sealing gasket experimental rig shown in 4 carries out the schematic diagram of two sealing gasket interface tests, and Fig. 6 is to be tried with the sealing gasket shown in Fig. 4
Experiment device carries out the schematic diagram of sealing gasket and groove in base interface test.
As Figure 4-Figure 6, the waterproof test device of the tunnel duct piece elastic sealing gasket of the embodiment of the present invention, including：Experiment
Platform base 1, the symmetrical shape of base 1 but pressing plate 6 without water injection hole and with the flat platen in the same size without groove of pressing plate 6
12。
As it can be seen in figures 5 and 6, testing stand base 1 is according to the size of sealing gasket groove 4 and concrete of actual tunnel segment structure etc.
Level by concrete or it is similar with concrete it is prefabricated form, itself and pressing plate 6,12 coordinate the table top for carrying out testing experiment to carry
Sealing gasket groove 4, it is used to house sealing gasket 9.
For guarantee test true and accurate, the distance test (DT) platform base edge of sealing gasket groove 4 is apart from A and groove width B
It is consistent with actual segment joint.
Pressing plate 6 (in this programme be referred to as the first pressing plate) is identical with testing stand base material, be for example concrete material or
Person is the other materials similar with concrete.Pressing plate 6 is tied with the end face of testing stand base contacts with the surface of testing stand base 1
Structure is matched or identical, but without water injection hole.It is used to house sealing gasket 9 in the corresponding sealing gasket groove 4 of first pressing plate 6, it is bonded
Tried in the groove of pressing plate, and for bonding corresponding with the sealing gasket 9 in testing stand base 1 with carrying out two sealing gasket joining contacting surfaces
Test.
Pressing plate 12 (the second pressing plate) is, itself and examination in the same size but without the flat platen of sealing gasket groove with the first pressing plate 6
The end face for testing the contact of platform base 1 is matched with the end face structure of testing stand base 1, and pressing plate 12 is used for and the sealing gasket in testing stand base
Bonding is compressed, to carry out sealing gasket and trench wall interface test with base combination.Preferably, the structure of pressing plate 12 is removed without sealing
Pad groove outside, it is identical with the first pressing plate 6, and pressing plate 12 correspondence pressing plate 6 groove at be plane, for in testing stand base 1
The bonding of sealing gasket 9 compress, carry out sealing gasket and trench wall interface test combine with base 1.
The waterproof test method of the tunnel duct piece elastic sealing gasket of this programme, for sealing gasket the section of jurisdiction shield tunnel
Waterproof carry out testing experiment, it specifically includes following steps：
1) according to the sealing gasket groove dimensions and concrete grade of actual tunnel segment structure, precast concrete testing stand base
1, the Edge Distance A and groove width B of 4 distance test (DT) platform base of sealing gasket groove 1 are consistent with actual segment joint.
2) using and the identical material of testing stand base 1 make with the symmetrical shape of base 1, but without the pressing plate 6 of water injection hole, together
When make that a block size is consistent, the flat platen 12 without groove.
3) first combined with the pressing plate 6 of with groove with base 1 and carry out experiment one, be put into the groove of pressing plate 6 and base 1
Lower two pieces of sealing gaskets 9, and be bonded cemented side seam 10 firmly using bonding agent, it is ensured that sealing gasket 9 and pressing plate 6, sealing gasket 9 in experiment
It will not be washed open with the cemented side seam 10 of base 1 by hydraulic pressure.
4) gap d of adjustment pressing plate 6 and base 1, simulation seam joint open 7；Adjust the relative position of pressing plate 6 and base 1
T, the faulting of slab ends amount 8 that simulation pipe sheet assembling is produced.
Apply hydraulic pressure P step by stepi, often add one-level stable water pressure for a period of time, determine after no leak, then apply next stage water
Pressure.After generation leak, by upper level hydraulic pressure Pi-1It is designated as the water pressure resistance ability P of contact surface between two sealing gasketsa, now it is considered
Occurs leak along two sealing gasket joining contacting surfaces infiltration path 11.
5) progress experiment two and then using the not pressing plate 12 of with groove is combined with base 1, is put into the groove of base 1 close
Packing 9.Adjust the gap d of pressing plate 12 and base 1, simulation seam joint open 7；The relative position t of pressing plate 12 and base 1 is adjusted,
Simulate the faulting of slab ends amount 8 that pipe sheet assembling is produced.And it is using bonding agent that sealing gasket 9 is be bonded with pressing plate 12 firmly, it is ensured that it is close in experiment
The cemented side seam 10 of packing 9 and pressing plate 12 will not be washed open by hydraulic pressure.
6) hydraulic pressure P is applied step by stepi, often add one-level stable water pressure for a period of time, determine after no leak, then apply next stage
Hydraulic pressure.After generation leak, by upper level hydraulic pressure Pi-1It is designated as the water pressure resistance ability P of contact surface between sealing gasket and trench wallb, this
When be considered along trench wall infiltration path 13 between occur leak.
7) P is comparedaAnd Pb, the maximum water pressure resistance ability that less value is elastic sealing gasket 9 is taken, corresponding leak type is
The mode failed for sealing gasket.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (7)
1. a kind of waterproof test method of tunnel duct piece elastic sealing gasket, it is characterised in that comprise the following steps：
S1 is according to the sealing gasket groove dimensions and concrete grade of actual tunnel segment structure, the concrete of prefabricated band sealing gasket groove
Testing stand base or the testing stand base with concrete similar material, wherein sealing gasket groove distance test (DT) platform base edge distance
And groove width is consistent with actual segment joint；
S2 makes the first pressing plate identical with testing stand understructure but without water injection hole using material identical with testing stand base,
Make simultaneously and first pressing plate is in the same size, flat platen without sealing gasket groove is used as the second pressing plate；
S3 carries out two sealing gasket interface tests with first pressing plate of with groove with base combination, i.e., at the first pressing plate and bottom
Sealing gasket is placed in the groove of seat respectively, and is bonded the cemented side seam of two sealing gaskets firmly using bonding agent, the first pressing plate is adjusted
With the gap of base to simulate seam joint open, and the dislocation distance of the first pressing plate of adjustment and base is to simulate pipe sheet assembling production
Raw faulting of slab ends amount；Apply hydraulic pressure step by step, and upper level hydraulic pressure is defined as to when occurring leak contact surface between two sealing gaskets
First water pressure resistance ability, and determine that leak mode is that occur leak along two sealing gasket joining contacting surfaces infiltration path；
S4 carries out sealing gasket and trench wall interface test with second pressing plate of not with groove with base combination, i.e., in base
Groove in be put into sealing gasket, the gap of the second pressing plate of adjustment and base is to simulate seam joint open, and the second pressing plate of adjustment
With the relative dislocation distance of base to simulate the faulting of slab ends amount of pipe sheet assembling generation, and bonding agent is used by sealing gasket and the second pressing plate
Bonding is firm；Apply hydraulic pressure step by step and upper level hydraulic pressure is defined as contact surface between sealing gasket and trench wall when occurring leak
The second water pressure resistance ability, and determine leak mode be along trench wall infiltration path between occur leak；
S5 the first water pressure resistance abilities and the second water pressure resistance ability, and less value is defined as elastic sealing gasket most
Big water pressure resistance ability, its corresponding leak type is the mode for being defined as sealing gasket failure.
2. a kind of waterproof test method of tunnel duct piece elastic sealing gasket according to claim 1, wherein, step S3 and S4
In the Hydraulic Process of application step by step in, often plus one-level hydraulic pressure first stablize a period of time, determine after no leak, then apply next stage
Hydraulic pressure.
3. a kind of waterproof test method of tunnel duct piece elastic sealing gasket according to claim 1 or 2, wherein, described
Two pressure plate structures are in addition to without sealing gasket groove, and its structure is identical with the first pressing plate.
4. a kind of waterproof test method of tunnel duct piece elastic sealing gasket according to any one of claim 1 to 3, its
In, the adhesive strength of sealing gasket and pressing plate or base can ensure that pressure process reclaimed water flows out not at cemented side seam.
5. a kind of waterproof test device of tunnel duct piece elastic sealing gasket, it is characterised in that including：
Testing stand base with sealing gasket groove, it is according to the sealing gasket groove dimensions and concrete grade of actual tunnel segment structure
By concrete or it is similar with concrete it is prefabricated form, wherein the sealing gasket groove distance test (DT) platform base edge distance
It is used to house sealing gasket and groove width is consistent with actual segment joint, in the sealing gasket groove；
With testing stand base material the first pressing plate of identical, its end face and the testing stand base knot with testing stand base contacts
Structure matching is identical but without water injection hole, is used to house sealing gasket in the corresponding sealing gasket groove of first pressing plate, for examination
The correspondence of the sealing gasket in platform base bonding is tested to carry out two sealing gasket interface tests；And
Second pressing plate, it is in the same size but without the flat platen of sealing gasket groove with the first pressing plate, and it connects with testing stand base
Tactile end face is matched with the testing stand understructure, and second pressing plate is used for pressure Nian Jie with the sealing gasket in testing stand base
Tightly, to carry out sealing gasket and trench wall interface test with base combination.
6. a kind of waterproof test method of tunnel duct piece elastic sealing gasket according to claim 5, wherein, second pressure
Hardened structure is in addition to without sealing gasket groove, and its structure is identical with the first pressing plate.
7. a kind of waterproof test method of tunnel duct piece elastic sealing gasket according to claim 5 or 6, wherein, described
The gap of one pressing plate or the second pressing plate and base to simulate seam joint open, first pressing plate or the second pressing plate and base
Faulting of slab ends amount of the dislocation distance to simulate pipe sheet assembling generation.
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| CN201710266185.4A CN106969884B (en) | 2017-04-21 | 2017-04-21 | Waterproof test method and device for tunnel segment elastic sealing gasket |
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| CN201710266185.4A CN106969884B (en) | 2017-04-21 | 2017-04-21 | Waterproof test method and device for tunnel segment elastic sealing gasket |
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| CN107527562A (en) * | 2017-10-24 | 2017-12-29 | 山西高科华烨电子集团有限公司 | LED display function jig structure |
| CN109073429A (en) * | 2018-05-31 | 2018-12-21 | 歌尔股份有限公司 | test device and calibration method |
| CN109073494A (en) * | 2018-05-31 | 2018-12-21 | 歌尔股份有限公司 | test device and calibration method |
| CN109113767A (en) * | 2018-09-11 | 2019-01-01 | 中国科学院武汉岩土力学研究所 | A kind of test tunnel duct piece waterproof sealing gasket and preparation method thereof |
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