CN204924568U - Tunnel seam waterproof performance test device - Google Patents
Tunnel seam waterproof performance test device Download PDFInfo
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- CN204924568U CN204924568U CN201520295522.9U CN201520295522U CN204924568U CN 204924568 U CN204924568 U CN 204924568U CN 201520295522 U CN201520295522 U CN 201520295522U CN 204924568 U CN204924568 U CN 204924568U
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- sealing gasket
- die trial
- pressure gauge
- performance test
- waterproof performance
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Abstract
The utility model provides a tunnel seam waterproof performance test device, including two examination moulds, be equipped with first basin, first interior slot and first outer slot on the first examination mould, the second is equipped with second basin, the interior slot of second and the outer slot of second on trying the mould, and the elastic gasket of first septal fossula inslot and the elastic gasket of second septal fossula inslot contact, form the inner circle and seal up the pad, the elastic gasket of first outer fissure inslot and the elastic gasket of second outer fissure inslot contact, form the sealed pad in outer lane, two basins are located within the sealed pad of inner circle the centralize water cavity, form the shaped as frame space between inner circle, the sealed pad in outer lane, be equipped with water pressure gauge and pore pressure cell on the first examination mould, be equipped with water filling channel on first examination mould or the second examination mould, two examination moulds are by horizontal spacing with vertical loaded jack. The utility model discloses but the sealed water -fast pressure value of filling up under the section of jurisdiction seam difference volume of opening, dislocation volume operating mode of precision measurement inner circle, outer lane provides technical guidance for the seam water -proof design.
Description
Technical field
The utility model relates to Tunnel Engineering field, particularly relates to a kind of test unit of simulating the water resistance of the circumferential weld/longitudinal joint of duct pieces of shield tunnel seam under through seam assembling operating mode adopting two pass elastic sealing gasket.
Background technology
Shield tunnel is formed by reinforced concrete segment is assembled, and there is a large amount of seam, percolating water often occurs herein.Nearly three during the last ten years, on the basis using high precision section of jurisdiction, adopts principle, wire sealing means, the encapsulant prefabricated profiled shield tunnel liner seam waterproof method of resilient seal, proved reasonable by engineering practice.
Along with the fast development of national economy, increasing water-bed shield tunnel project is built successively, has the advantages that buried depth is large, hydraulic pressure is high.Different and general subway tunnel, water-bed shield tunnel is often urban road tunnel or railway tunnel, has the advantages that diameter is large, section of jurisdiction is thick.In Practical Project work progress, the general single track elastic sealing gasket that adopts is as seam waterproof scheme, but the program can not meet the waterproof requirement of high hydraulic pressure, therefore, for the extra-large shield-driven tunnel bearing high hydraulic pressure, needs to arrange two pass defence line and carries out waterproof.In addition, water delivery/effluent tunnel etc. has the municipal Hydraulic Tunnel of specific use, should prevent outer water from immersing, avoid endochronic model again.Therefore, for the shield tunnel bearing interior hydraulic pressure, also needing, two pass defence line is set and carries out waterproof.
For shield tunnel, seam waterproof adopts arranged outside groove in section of jurisdiction, embedding elastic sealing gasket in groove.In pipe sheet assembling process, tentatively compress elastic sealing gasket by assembling machine and lifting jack, dislocation is opened in the bolt restriction be aided with between section of jurisdiction, and the water and soil confined pressure effect of contraction in later stage, thus reaches the effect of waterproof.
Application number is disclose a kind of elastic sealing gasket of shield tunnel " yi word pattern " watertightness verifying attachment in the Chinese invention patent instructions of 201010145789.1, this verifying attachment opens rectangular channel separately on the surface of upper and lower two cover plates, adopt after elastic sealing gasket being closed into frame-type and be gluingly connected in groove, with bolt, sealing gasket is compressed, pad is utilized to simulate the different joint open of section of jurisdiction, simultaneously at device sidewall mounting limit plate, to simulate the faulting of slab ends situation of section of jurisdiction.This device has following open defect: (1) current duct pieces of shield tunnel is based on prefabricated reinforced concrete section of jurisdiction pattern, this verifying attachment adopts steel cover plate in practice examining process, be provided with steel groove above, this device can not reflect the actual contact form of elastic sealing gasket elastomeric material and concrete groove, thus test findings and the larger discrepancy of engineering physical presence; (2) a large amount of Engineering Projects shows, due to the construction deviation of construction stage duct piece assembling machine, and operation stage soft soil layer the superposition of the multiple factors such as relative settlement, very easily there is the magnitude of misalignment of 15mm in longitudinal joint and circumferential weld, and be limited to the size of cover plate, seam big shearing working condition tests cannot be carried out; (3) adopt bolt presses simulation seam joint open, pad spacing simulation seam magnitude of misalignment, need manual setting to measure, test accuracy is lower; (4) this patent of invention is positioned the subway tunnel of diameter about the 6m adopting single track elastic sealing gasket waterproof, corresponding cover plate size is less, cannot adopt the waterproof ability of the major diameter cross-river tunnel of more than the diameter 10m of two pass elastic sealing gasket waterproof by scientific evaluation.
Because existing shield tunnel seam waterproof spininess is to the subway tunnel of minor diameter, shallow earthing, low hydraulic pressure, it generally adopts the water proof structure pattern of single track elastic sealing gasket, two pass elastic sealing gasket is still in the contrived experiment stage as seam waterproof scheme, there is no the test unit can evaluating its water resistance both at home and abroad, so need the waterproof ability that a kind of test of development arranges quantitative test two pass elastic sealing gasket badly.
Utility model content
The shortcoming of prior art in view of the above, the technical problems to be solved in the utility model is to provide a kind of tunnel seam waterproof performance test apparatus, and this device can the waterproof ability of quantitative test two pass elastic sealing gasket.
For achieving the above object, the utility model provides a kind of tunnel seam waterproof performance test apparatus, comprise the first die trial and the second die trial, described first die trial sets gradually the first tank from inside to outside, first internal channel and the first outer channel, described second die trial is correspondingly provided with the second tank from the inside to the outside successively, second internal channel and the second outer channel, described first internal channel, first outer channel, second internal channel and the second outer channel are all in close-shaped, and inside is embedded with elastic sealing gasket respectively, elastic sealing gasket in elastic sealing gasket in first internal channel and the second internal channel contacts, form inner ring sealing gasket, elastic sealing gasket in elastic sealing gasket in first outer channel and the second outer channel contacts, and forms outer ring sealing gasket, within first tank and the second tank are positioned at inner ring sealing gasket, form center water cavity, shaped as frame space is formed between inner ring sealing gasket and outer ring sealing gasket, described first die trial is provided with for the water pressure gauge of measuring center water cavity pressure with for pore pressure gauge when hydraulic pressure exists in detection sensor shaped as frame space, and described first die trial or the second die trial are provided with the waterflood path be communicated with described center water cavity, the top of described first die trial and be each side provided with lifting jack, the below of the second die trial and be each side provided with lifting jack.
Further, pore pressure gauge comprises gauge outfit and pressure gauge sensing element, and described pressure gauge sensing element is arranged in described shaped as frame space.
Further, described first die trial is provided with reserved gaging hole, and described pressure gauge sensing element is connected with gauge outfit by reserved gaging hole.
Further, described reserved gaging hole is four and central shaft is symmetrical arranged, and described pore water pressure, in respect of four, lays respectively in described reserved gaging hole.
Preferably, the material of described elastic sealing gasket is hydro-expansive rubber.
Preferably, described first die trial and the second die trial are made by reinforced concrete.
As mentioned above, the tunnel seam waterproof performance test apparatus that the utility model relates to, has following beneficial effect:
1) pore pressure gauge being used for detection sensor current is set by four orientation in shaped as frame space, accurately can judges that current puncture the time of origin of interior road sealing;
2) can precise verification inner ring sealing gasket and the hydraulic pressure resistance force value of outer ring sealing gasket under different seam joint open, magnitude of misalignment operating mode, make to adopt two pass elastic sealing gasket more accurate as the appraisement system of the waterproof ability of waterproof project.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1
Fig. 3 is the B-B sectional view of Fig. 1
Fig. 4 is the C-C sectional view of Fig. 2
Fig. 5 is the D-D sectional view of Fig. 3
Element numbers explanation
First die trial 1
First tank 11
First internal channel 12
First outer channel 13
Reserved gaging hole 14
Second die trial 2
Second tank 21
Second internal channel 22
Second outer channel 23
Waterflood path 24
Inner ring sealing gasket 121
Outer ring sealing gasket 131
Water pressure gauge 3
Pore pressure gauge 4
Pressure gauge sensing element 41
Gauge outfit 42
Center water cavity 5
Shaped as frame space 6
Lifting jack 7
Embodiment
By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar the content disclosed by this instructions can understand other advantages of the present utility model and effect easily.
Notice, structure, ratio, size etc. that this instructions institute accompanying drawings illustrates, content all only in order to coordinate instructions to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, still all should drop on technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, quote in this instructions as " on ", D score, "left", "right", " centre " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.
As shown in Figures 1 to 5, the utility model provides a kind of tunnel seam waterproof performance test apparatus, comprise the first die trial 1 and the second die trial 2, described first die trial 1 sets gradually the first tank 11 from inside to outside, first internal channel 12 and the first outer channel 13, described second die trial is correspondingly provided with the second tank 21 from the inside to the outside successively, second internal channel 22 and the second outer channel 23, described first internal channel 12, first outer channel 13, second internal channel 22 and the second outer channel 23 are all in close-shaped, and inside is embedded with elastic sealing gasket respectively, one end Pasting that described elastic sealing gasket embeds is at trench wall, the material of described elastic sealing gasket can select hydro-expansive rubber, as ethylene-propylene-diene rubber or, to strengthen integral waterproofing performance.Elastic sealing gasket in elastic sealing gasket in first internal channel 12 and the second internal channel 22 contacts, form inner ring sealing gasket 121, the inside of inner ring sealing gasket 121 is a closed space, within the first tank 11 and the second tank 21 are positioned at inner ring sealing gasket 121, forms center water cavity 5, elastic sealing gasket in elastic sealing gasket in first outer channel 13 and the second outer channel 23 contacts, and form outer ring sealing gasket 131, form shaped as frame space 6 between inner ring sealing gasket 121 and outer ring sealing gasket 131, described shaped as frame space 6 is a closed space, described first die trial 1 is provided with for the water pressure gauge 3 of measuring center water cavity 5 pressure and the pore pressure gauge 4 for hydraulic pressure existence in detection sensor shaped as frame space 6, described first die trial 1 or the second die trial 2 are provided with the waterflood path 24 be communicated with described center water cavity 5, during test, injected the water of band pressure toward center water cavity 5 by described waterflood path 24, when hydraulic pressure exceedes the water pressure resistance force value of inner ring sealing gasket 121, inner ring sealing gasket 121 can be punctured by current, continue the water injecting band pressure, when hydraulic pressure exceedes the water pressure resistance force value of outer ring sealing gasket 131, outer ring sealing gasket 131 can be punctured by current.
As shown in Figure 1, the top of described first die trial 1 and be each side provided with lifting jack 7, carries out constraint to the first die trial 1 spacing, the below of the second die trial 2 and be each side provided with lifting jack 7, carries out constraint spacing to the second die trial 2.Wherein to be positioned at above the first die trial 1 and lifting jack 7 below the second die trial 2 in order to control the joint open of the first die trial 1 and the second die trial 2 seam crossing, be positioned at the lifting jack 7 of the first die trial 1 and second die trial 2 left and right sides in order to control the relative dislocation amount of the first die trial 1 and the second die trial 2 seam crossing.
Preferably, as shown in Fig. 1 and Fig. 4, pore pressure gauge 4 comprises gauge outfit 42 and pressure gauge sensing element 41, described pressure gauge sensing element 41 is arranged in described shaped as frame space 6, preferably, described first die trial 1 is provided with reserved gaging hole 14, described pressure gauge sensing element 41 is connected with gauge outfit 42 by reserved gaging hole 14, when inner ring sealing gasket 121 is punctured by current, pressure gauge sensing element 41 senses the pressure change puncturing current and produce, feed back in gauge outfit 42, the reading of gauge outfit 42 changes.Preferably, described reserved gaging hole 14 is four and central shaft is symmetrical arranged, described pore pressure gauge 4 has four, lay respectively in described reserved gaging hole 14, as any of inner ring sealing gasket 121 while when being punctured generation seepage by current, can feed back to rapidly in the gauge outfit 42 of pore pressure gauge 4, prevent pressure transfer lag, add the accuracy measuring inner ring sealing gasket 121 waterproof ability.
Preferably, described first die trial 1 and the second die trial 2 are made by reinforced concrete, usually use the die trial of steel to test in prior art, the actual contact form of elastic sealing gasket elastomeric material and concrete groove can not be reflected, thus test findings and the larger discrepancy of engineering physical presence.Therefore, in order to ensure the consistance of test findings and engineering reality, the first die trial 1 and the second die trial 2 preferably using reinforced concrete to make in the utility model, and make the first die trial 1 consistent with the reinforced concrete segment in Practical Project with the second die trial 2, be specially: the groove that in die trial, the size of outer channel is corresponding with reinforced concrete segment in Practical Project is consistent, in die trial, the center distance of inside and outside twice groove is consistent with the center distance of twice groove inside and outside reinforced concrete in Practical Project, die trial China and foreign countries side trench is consistent to the distance of section of jurisdiction extrados with groove outside reinforced concrete segment in Practical Project to the outer peripheral distance of die trial.In addition, adopt the tunnel diameter of two pass elastic sealing gasket waterproof usually at more than 10m, because pipe sheet assembling chance in the construction stage produces construction deviation, and operation stage soft soil layer the impact of the multiple factors such as relative settlement, very easily there is the magnitude of misalignment of about 15mm in longitudinal joint and circumferential weld, thus the size of reinforced concrete segment in the size of die trial and Practical Project is consistent, to carry out seam big shearing working condition tests, can the standard of Accurate Assessment inner ring sealing gasket 121 and outer ring sealing gasket 131 waterproof ability under through seam assembling state.
The utility model judges that the principle that inner ring sealing gasket 121 lost efficacy is as follows: by burying pore pressure gauge 4 underground between inner ring sealing gasket 121 and outer ring sealing gasket 131, when current puncture inner ring sealing gasket 121, after contacting with pressure gauge sensing element 41, corresponding gauge outfit 42 can show reading, now can judge that inner ring sealing gasket 121 lost efficacy.
The utility model provides a kind of method using tunnel seam waterproof performance test apparatus to carry out water resistance test, comprises the following steps:
S1, is synchronously loaded by the lifting jack 7 of the left and right sides, and the magnitude of misalignment that the seam crossing of the first die trial 1 and the second die trial 2 is produced reaches setting value;
S2, is synchronously loaded by the lifting jack 7 above the first die trial 1 and the lifting jack 7 below the second die trial 1, acts on a known controlled load to the first die trial 1, makes the joint open of the first die trial 1 and the second die trial 2 seam crossing reach setting value;
S3, hydraulic pressure is applied to center water cavity by waterflood path 24, until current puncture inner ring sealing gasket 121, now the pressure gauge sensing element 4 of pore pressure gauge senses the change of pressure, feed back in gauge outfit 42, the numerical value of gauge outfit 42 changes, record the full-scale reading P1 of water pressure gauge 3 before this, the reading of water pressure gauge can by manual record, or by the automatic record of instrument and meter for automation, or carry out data acquiring and recording by computing machine, obtain the withstand voltage of inner ring sealing gasket 121 under this state, this withstand voltage is as the standard of evaluation inner ring sealing gasket 121 of the present utility model waterproof ability under through seam assembling state,
S4, continue through waterflood path 24 and apply hydraulic pressure to center water cavity 5, along with the rising of hydraulic pressure, until current puncture outer ring sealing gasket 131, one or more now in four pore pressure gauges 4 sense that the change of pressure can produce reading, record the full-scale reading P2 of water pressure gauge 3 before this, obtain the withstand voltage of outer ring sealing gasket 131 under this state, this withstand voltage is as the standard of evaluation outer ring of the present utility model sealing gasket 131 waterproof ability under through seam assembling state.
In the utility model, the joint open of setting is different with changing of the relative positions amount, the inner ring sealing gasket obtained and the water pressure resistance force value of outer ring sealing gasket naturally also different, therefore, the utility model can precise verification inner ring sealing gasket and the water pressure resistance force value of outer ring sealing gasket under different seam joint open, magnitude of misalignment operating mode, makes to adopt two pass elastic sealing gasket more accurate as the appraisement system of the waterproof ability of waterproof project.
In sum, the utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (6)
1. a tunnel seam waterproof performance test apparatus, it is characterized in that, comprise the first die trial (1) and the second die trial (2), described first die trial (1) sets gradually the first tank (11) from inside to outside, first internal channel (12) and the first outer channel (13), described second die trial (2) is correspondingly provided with the second tank (21) from the inside to the outside successively, second internal channel (22) and the second outer channel (23), described first internal channel (12), first outer channel (13), second internal channel (22) and the second outer channel (23) are all in close-shaped, and inside is embedded with elastic sealing gasket respectively, elastic sealing gasket in described first internal channel (12) and the elastic sealing gasket in described second internal channel (22) contact, form inner ring sealing gasket (121), elastic sealing gasket in described first outer channel (13) and the elastic sealing gasket in described second outer channel (23) contact, and form outer ring sealing gasket (131), within described first tank (11) and described second tank (21) are positioned at described inner ring sealing gasket (121), form center water cavity (5), shaped as frame space (6) is formed between described inner ring sealing gasket (121) and described outer ring sealing gasket (131), described first die trial (1) is provided with for the water pressure gauge (3) of measuring center water cavity pressure and the pore pressure gauge (4) for measuring described shaped as frame space (6) pressure, and described first die trial (1) or the second die trial (2) are provided with the waterflood path (24) be communicated with described center water cavity (5), the top of described first die trial (1) and be each side provided with lifting jack (7), the below of the second die trial (2) and be each side provided with lifting jack (7).
2. tunnel according to claim 1 seam waterproof performance test apparatus, it is characterized in that: described pore pressure gauge (4) comprises gauge outfit (42) and pressure gauge sensing element (41), described pressure gauge sensing element (41) is arranged in described shaped as frame space (6).
3. tunnel according to claim 2 seam waterproof performance test apparatus, it is characterized in that: described first die trial (1) is provided with reserved gaging hole (14), described pressure gauge sensing element (41) is connected with described gauge outfit (42) by described reserved gaging hole (14).
4. tunnel according to claim 3 seam waterproof performance test apparatus, it is characterized in that: described reserved gaging hole (14) is four and central shaft is symmetrical arranged, described pore pressure gauge (4) has four, lays respectively in described reserved gaging hole (14).
5. tunnel according to claim 1 seam waterproof performance test apparatus, is characterized in that: the material of described elastic sealing gasket is hydro-expansive rubber.
6. tunnel according to claim 1 seam waterproof performance test apparatus, is characterized in that: described first die trial (1) and the second die trial (2) are made by reinforced concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520295522.9U CN204924568U (en) | 2015-05-08 | 2015-05-08 | Tunnel seam waterproof performance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520295522.9U CN204924568U (en) | 2015-05-08 | 2015-05-08 | Tunnel seam waterproof performance test device |
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| CN204924568U true CN204924568U (en) | 2015-12-30 |
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| CN201520295522.9U Expired - Fee Related CN204924568U (en) | 2015-05-08 | 2015-05-08 | Tunnel seam waterproof performance test device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865012A (en) * | 2015-05-08 | 2015-08-26 | 同济大学 | Tunnel joint waterproof performances test apparatus and test method |
| CN106480909A (en) * | 2016-11-22 | 2017-03-08 | 西南交通大学 | A kind of interchangeable device for monitoring prefabricated assembled subway station joint percolating water |
| CN108454001A (en) * | 2018-01-19 | 2018-08-28 | 安徽宁国中鼎模具制造有限公司 | A kind of encapsulated grid mold of injection molding |
| CN109029308A (en) * | 2018-05-03 | 2018-12-18 | 天津大学 | Duct pieces of shield tunnel gap joint open prediction technique |
| CN109238844A (en) * | 2016-07-08 | 2019-01-18 | 长安大学 | Tunnel lining structure crack treatment experimental method |
| CN109443940A (en) * | 2018-10-16 | 2019-03-08 | 上海建工集团股份有限公司 | Detect the method and system in waterproof failure path under elastic sealing gasket splayed condition |
| CN111189712A (en) * | 2020-01-21 | 2020-05-22 | 中铁十五局集团有限公司 | Shield tunnel seam stress prototype test system |
| CN114509350A (en) * | 2022-02-15 | 2022-05-17 | 中南大学 | Segment joint double-channel waterproof test device and method for simulating hydraulic action of inner cavity |
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2015
- 2015-05-08 CN CN201520295522.9U patent/CN204924568U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865012A (en) * | 2015-05-08 | 2015-08-26 | 同济大学 | Tunnel joint waterproof performances test apparatus and test method |
| CN109238844A (en) * | 2016-07-08 | 2019-01-18 | 长安大学 | Tunnel lining structure crack treatment experimental method |
| CN109238844B (en) * | 2016-07-08 | 2020-12-01 | 长安大学 | Tunnel lining structure crack treatment experimental method |
| CN106480909A (en) * | 2016-11-22 | 2017-03-08 | 西南交通大学 | A kind of interchangeable device for monitoring prefabricated assembled subway station joint percolating water |
| CN108454001B (en) * | 2018-01-19 | 2024-04-12 | 安徽宁国中鼎模具制造有限公司 | Injection molding rubber coating grid mould |
| CN108454001A (en) * | 2018-01-19 | 2018-08-28 | 安徽宁国中鼎模具制造有限公司 | A kind of encapsulated grid mold of injection molding |
| CN109029308A (en) * | 2018-05-03 | 2018-12-18 | 天津大学 | Duct pieces of shield tunnel gap joint open prediction technique |
| CN109443940A (en) * | 2018-10-16 | 2019-03-08 | 上海建工集团股份有限公司 | Detect the method and system in waterproof failure path under elastic sealing gasket splayed condition |
| CN109443940B (en) * | 2018-10-16 | 2021-04-06 | 上海建工集团股份有限公司 | Method and system for detecting waterproof failure path under condition of opening elastic sealing gasket |
| CN111189712A (en) * | 2020-01-21 | 2020-05-22 | 中铁十五局集团有限公司 | Shield tunnel seam stress prototype test system |
| CN111189712B (en) * | 2020-01-21 | 2022-04-22 | 中铁十五局集团有限公司 | Shield tunnel seam stress prototype test system |
| CN114509350A (en) * | 2022-02-15 | 2022-05-17 | 中南大学 | Segment joint double-channel waterproof test device and method for simulating hydraulic action of inner cavity |
| CN114509350B (en) * | 2022-02-15 | 2024-02-23 | 中南大学 | Segment joint double-channel waterproof test device and method for simulating inner cavity water pressure effect |
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