CN104964796A - Shield tunnel elastic sealing gasket "dual-waterproof" water-tightness inspection device - Google Patents
Shield tunnel elastic sealing gasket "dual-waterproof" water-tightness inspection device Download PDFInfo
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- CN104964796A CN104964796A CN201510410037.6A CN201510410037A CN104964796A CN 104964796 A CN104964796 A CN 104964796A CN 201510410037 A CN201510410037 A CN 201510410037A CN 104964796 A CN104964796 A CN 104964796A
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- sealing gasket
- elastic sealing
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Abstract
The invention discloses a shield tunnel elastic sealing gasket "dual-waterproof" water-tightness inspection device. The inspection device comprises one rigid ribbed plate and four rigid flat plates. The rigid ribbed plate is composed of a main plate and two pairs of rib plates. The two pairs of the rib plates are symmetrically arranged at the two sides of the waist parts of the main plate respectively. The shield tunnel elastic sealing gasket "dual-waterproof" water-tightness inspection device is used so that limitation that only penetration performance of the contact surface of an elastic sealing gasket and a steel molding plate is inspected in the existing test methods is extended, experimental study work on penetration performance of the contact surface of the elastic sealing gasket and concrete can be carried out, and waterproof performance of using a dual-waterproof sealing gasket structure in the project can be accurately simulated. Besides, the inspection device can be matched with the widely used common concrete anti-permeability instruments at present so that processing cost is reduced.
Description
Technical field
The present invention relates to Tunnel Engineering technical field, particularly relating to a kind of verifying attachment for measuring elastic sealing gasket of shield tunnel " twice waterproof " watertightness of directly fitting with concrete.
Background technology
A large amount of seams is there is, at present mainly by being pasted by Ethylene Propylene Terpolymer elastic sealing gasket and being squeezed in the waterproof effect obtaining expection in segment prefabricated groove between shield tunnel lining segment.The waterproof effect of present stage is many to be undertaken simulating or calculating verifying by test.
In the test that scholar does at home, substantially adopt the method offering one groove on steel die, elastic sealing gasket is positioned over the water resistance of also testing elastic sealing gasket in groove.As existing national standards " high polymer waterproof material the 4th part: carried out detailed discussion to water pressure resistance simulation experiment method in " shield tunnel section of jurisdiction rubber gasket " (GB 18173.4-2010), utilizing the water pressure resistance testing device of simulation pipe sheet assembling seam, measuring the hydraulic pressure force value that sealing gasket can bear when designing wrong trace and joint open.Publication No. is that the Chinese patent of CN 101929911A and CN 101929910A discloses a kind of elastic sealing gasket of shield tunnel watertightness verifying attachment, and they effectively can simulate the water proof case of section of jurisdiction elastic sealing gasket under different joint open and faulting of slab ends amount situation.
But above-mentioned test method only simulates the sealing effectiveness in elastic sealing gasket and steel deck-plate laminating situation, there is certain difference with the fit boundary condition of situation of prefabricated concrete section of jurisdiction in actual condition and elastic sealing gasket.In addition, current part engineering or structure adopt twice waterproof sealing gasket, and wherein one sealing gasket position is near upstream face side, and another road is near back side side.And existing test unit or method only effectively can simulate the water permeability of duct pieces of shield tunnel under one waterproof operating mode.
Therefore, how to solve the problem and become the technical matters that those skilled in the art need solution badly.
Summary of the invention
For Problems existing in background technology, the object of the present invention is to provide a kind of elastic sealing gasket of shield tunnel " twice waterproof " watertightness verifying attachment, the application uses elastic sealing gasket of shield tunnel " twice waterproof " watertightness verifying attachment, expand in existing method of testing the limitation only relating to and investigate elastic sealing gasket and steel form surface of contact permeance property, Test And Research Work can be carried out for elastic sealing gasket and concrete surface permeance property, more adequately can use the water resistance of twice waterproof sealing mat structure in model engineering; In addition, the verifying attachment of the application can support the use with the concrete impervious instrument of now widely used plain edition, reduces processing cost.
The object of the invention is to be achieved through the following technical solutions:
A kind of elastic sealing gasket of shield tunnel " twice waterproof " watertightness verifying attachment, described verifying attachment comprises one piece of rigid strip floor and four pieces of stiffener plate; Wherein, described rigid strip floor is made up of mainboard and two pairs of floors, and described two pairs of floors are symmetricly set in the both sides of described mainboard waist respectively.
Further, the longitudinal profile of described mainboard is trapezoidal, the width 175mm suitable for reading of described mainboard, end opening width 185mm, height 150mm, and the thickness of mainboard, according to the setting of elastic sealing gasket of shield tunnel joint open, is 2mm ~ 12mm.
Further, described floor cross section is isosceles trapezoid, and the size of floor sets according to the cross dimensions of sealing gasket, and 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, and namely its length and width are contained in described mainboard, thickness is identical with described mainboard thickness.
The present invention has following positive technique effect:
A kind of elastic sealing gasket of shield tunnel " twice waterproof " watertightness verifying attachment of directly fitting with concrete of the present invention, one is expanded in existing method of testing the limitation only relating to and investigate elastic sealing gasket and steel form surface of contact permeance property, Test And Research Work can be carried out for elastic sealing gasket and concrete surface permeance property, simulate the boundary condition of sealing gasket in Practical Project better, evaluation index is more objective and reasonable; Two is the water resistancees that more adequately can use twice waterproof sealing mat structure in model engineering; Three is can support the use with the concrete impervious instrument of now widely used plain edition, reduces processing cost.Assay method provided by the invention has the advantages such as more consistent with Practical Project boundary condition, equipment is simple, easy to operate, shaping work amount is little, measured result is good, is applicable to carry out elastic sealing gasket of shield tunnel " twice waterproof " waterproof test research work.
Accompanying drawing explanation
Fig. 1 is stereographic map of the present invention;
Fig. 2 is front view of the present invention;
Fig. 3 is right view of the present invention;
Fig. 4 is the stereographic map of formation of concrete sample of the present invention.
Embodiment
Below, with reference to accompanying drawing, more fully illustrate the present invention, accompanying drawing acceptance of the bid shows exemplary embodiment of the present invention.But the present invention can be presented as multiple multi-form, and should not be construed as the exemplary embodiment being confined to describe here.But, these embodiments are provided, thus make the present invention comprehensively with complete, and scope of the present invention is fully conveyed to those of ordinary skill in the art.
For ease of illustrating, here can use such as " on ", the space relative terms such as D score " left side " " right side ", for illustration of the element of shown in figure or the feature relation relative to another element or feature.It should be understood that except the orientation shown in figure, spatial terminology is intended to comprise device different azimuth in use or operation.Such as, if the device in figure is squeezed, be stated as the element being positioned at other elements or feature D score will be positioned at other elements or feature " on ".Therefore, exemplary term D score can comprise upper and lower both orientation.Device can otherwise be located (90-degree rotation or be positioned at other orientation), and space used here illustrates relatively can correspondingly explain.
As Figure 1-4, this application provides a kind of elastic sealing gasket of shield tunnel watertightness verifying attachment, this device is made up of one piece of rigid strip floor and four pieces of stiffener plate 2.Rigid strip floor mainboard 1 width 175mm suitable for reading, end opening width 185mm, height 150mm, arranges two pairs of floors 3 along its short transverse.The thickness of rigid strip floor mainboard 1 is determined, between 2mm ~ 12mm according to elastic sealing gasket of shield tunnel joint open; Two pairs of floor 3 center sizes are aimed at, and cross section is isosceles trapezoid, and size is determined according to the cross dimensions of sealing gasket, and single floor 3 thickness is between 14mm ~ 36mm, and outer width is between 30mm ~ 45mm, and insied width is 35mm ~ 50mm.Stiffener plate 2 is the subset of rigid strip floor mainboard 1 part, and namely its length and width are contained in described rigid strip floor mainboard 1, and thickness is identical with rigid strip floor mainboard 1.
At present, the design process of elastic sealing gasket is still in the Experience Design stage, existing sealing gasket waterproof detection experiment device mostly also is the anti-aqueous condition in simulation sealing gasket and cover plate surface of contact or two sealing gasket self-contact faces, mostly be one waterproof test device, not being inconsistent with adopting the Practical Project situation of twice waterproof, being difficult to appraisement system accurately.
Using in national act.std about concrete permeability resistance mould shaping upper diameter to be 175mm, and lower diameter is 185mm, the high filled circles mesa-shaped concrete sample for 150mm.Rigid strip floor of the present invention and above-mentioned concrete permeability resistance mould is used to carry out assembly, formation of concrete sample, be two half round table-like concret blocks respectively carrying two groove after maintenance form removal, the thickness of upper and lower two pairs of grooves is identical, be all the thickness of the floor of rigid strip floor, the thickness of concrete sample seam crossing is the thickness (as shown in Figure 4) of rigid strip floor mainboard.
After arriving curing age, taking-up concrete sample is also clean by surface wipes.Illustrated state, for normally to splice state, does not namely have position deviation between two block concrete samples, and upper and lower two pairs of groove center sizes are aimed at, and process four elastic sealing gaskets are divided into upper and lower two groups, are respectively charged in two pairs of grooves of sample.Now do not close between concrete sample and put in place, the width of seam crossing is section of jurisdiction joint open.Due to the thickness of described stiffener plate and the consistency of thickness of rigid strip floor main board, now four pieces of stiffener plate are placed in two block concrete sample seam crossings respectively, accurately can simulate the test situation of elastic sealing gasket 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, then with pressurizer press-in in the die trial of baking oven or electric furnace preheating, described die trial is die trial general in concrete impermeability test.Make sample concordant with at the bottom of die trial, die trial temperature return, to pressure relief during room temperature, loads concrete impervious instrument subsequently and tests.
Start Anti-leakage instrument, under pressure water action, observe the end face situation of concrete sample.If two elastic sealing gasket joint faces or elastic sealing gasket and concrete surface seep water to have infiltration to be judged to be between two block concretes, record the one-tenth-value thickness 1/10 of now water pressure and floor; If have infiltration between concrete and urceolus, show that the sealing property of sample and die trial is bad, need again test by after above-mentioned sealing step sealing.
Change the thickness of rigid strip floor mainboard in apparatus of the present invention, repeat water penetration test, the water-resistant pressure of " two road waterproof " elastic sealing gasket under different joint open state can be obtained.
Described just in order to the present invention is described above, be construed as the present invention and be not limited to above embodiment, meet the various variants of inventive concept all within protection scope of the present invention.
Claims (4)
1. elastic sealing gasket of shield tunnel " twice waterproof " watertightness verifying attachment, is characterized in that, described verifying attachment comprises one piece of rigid strip floor and four pieces of stiffener plate; Wherein, described rigid strip floor is made up of mainboard and two pairs of floors, and described two pairs of floors are symmetricly set in the both sides of described mainboard waist respectively.
2. verifying attachment according to claim 1, is characterized in that, the longitudinal profile of described mainboard is trapezoidal, the width 175mm suitable for reading of described mainboard, end opening width 185mm, height 150mm, the thickness of mainboard, according to the setting of elastic sealing gasket of shield tunnel joint open, is 2mm ~ 12mm.
3. verifying attachment according to claim 1, 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, and outer width is 30mm ~ 45mm, and insied width is 35mm ~ 50mm.
4. verifying attachment according to claim 1, is characterized in that, described stiffener plate is the subset of described mainboard, and namely its length and width are contained in described mainboard, thickness is identical with described mainboard thickness.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510410037.6A CN104964796B (en) | 2015-07-14 | 2015-07-14 | A kind of elastic sealing gasket of shield tunnel " twice are waterproof " watertightness method of inspection |
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| CN201510410037.6A CN104964796B (en) | 2015-07-14 | 2015-07-14 | A kind of elastic sealing gasket of shield tunnel " twice are waterproof " watertightness method of inspection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969884A (en) * | 2017-04-21 | 2017-07-21 | 中铁第四勘察设计院集团有限公司 | A kind of waterproof test method and device of tunnel duct piece elastic sealing gasket |
| 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 |
| 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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969884A (en) * | 2017-04-21 | 2017-07-21 | 中铁第四勘察设计院集团有限公司 | A kind of waterproof test method and device of tunnel duct piece elastic sealing gasket |
| 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 |
| 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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