CN104964797A - Shield tunnel elastic sealing gasket "T-shaped" water-tightness inspection device - Google Patents
Shield tunnel elastic sealing gasket "T-shaped" water-tightness inspection device Download PDFInfo
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- CN104964797A CN104964797A CN201510411144.0A CN201510411144A CN104964797A CN 104964797 A CN104964797 A CN 104964797A CN 201510411144 A CN201510411144 A CN 201510411144A CN 104964797 A CN104964797 A CN 104964797A
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- sealing gasket
- elastic sealing
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Abstract
The invention discloses a shield tunnel elastic sealing gasket "T-shaped" water-tightness inspection device. The inspection device comprises one rigid ribbed plate and six rigid flat plates. The rigid ribbed plate is composed of a main plate and rib plates. The main plate is arranged to be "T-shaped". 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 "T-shaped" water-tightness inspection device directly fit with concrete 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, and experimental study work on penetration performance of the contact surface of the elastic sealing gasket and concrete can be carried out. 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 " T font " 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, basic employing replaces the method for concrete groove with steel groove, the border of sealing gasket and friction condition are difficult to be met.In existing national standards " high polymer waterproof material the 4th part: shield tunnel section of jurisdiction rubber gasket " (GB 18173.4-2010), detailed discussion is carried out to water pressure resistance simulation experiment method, 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 number is that the Chinese patent of CN 101929910A discloses a kind of T-shaped water tightness test device of shield tunnel elastic sealing gasket, 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 sealing effectiveness under actual condition Elastic sealing gasket and concrete laminating situation.
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 verifying attachment for measuring elastic sealing gasket of shield tunnel " T font " watertightness of directly fitting with concrete, the application uses the T-shaped water tightness test device of shield tunnel elastic sealing gasket of directly fitting with concrete, 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, in addition, the verifying attachment of the application can support the use with the concrete impervious instrument of now widely used plain edition, reduce processing cost.
The object of the invention is to be achieved through the following technical solutions:
A kind of T-shaped water tightness test device of shield tunnel elastic sealing gasket, described verifying attachment comprises one piece of rigid strip floor and six pieces of stiffener plate; Wherein, described rigid strip floor is made up of mainboard and floor, and described mainboard becomes " T font " to arrange; Described floor is symmetricly set in the both sides of described mainboard waist respectively.
Further, the flange portions width 175mm suitable for reading of described mainboard, end opening width 185mm, height 150mm; Web part width 87.5mm suitable for reading, end opening width 92.5mm, height 150mm; 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 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 T-shaped water tightness test device of shield tunnel elastic sealing gasket 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 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 " T font " 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 six pieces of stiffener plate 2.Rigid strip floor mainboard 1 flange portions width 175mm suitable for reading, end opening width 185mm, height 150mm; Web part width 87.5mm suitable for reading, end opening width 92.5mm, height 150mm.The thickness of rigid strip floor mainboard 1 is determined, between 2mm ~ 12mm according to elastic sealing gasket of shield tunnel joint open; A pair floor 3 is arranged in mainboard 1 both sides, and floor 3 center size is 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.Described stiffener plate 2 is the subset of rigid strip floor mainboard 1, and namely its length and width are contained in the mainboard 1 of rigid strip floor, and thickness is identical with the mainboard 1 of rigid strip floor.
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, is not inconsistent, has been difficult to appraisement system accurately with Practical Project situation.
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, it is the concret block of three fluted half round table-like or quadrant mesa-shaped of band after formation of concrete sample maintenance form removal, between three block concrete samples, the thickness of groove is the floor thickness of rigid strip floor, and the thickness of three block concrete sample seam crossings 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 three block concrete samples, and groove center size is aimed at, in " T font ".Process three elastic sealing gaskets (containing the sealing gasket of " yi word pattern " and the sealing gasket of two " L fonts ") are loaded in the groove of two block concrete samples.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 six pieces of stiffener plate are placed in three 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 between three block concretes seam crossing have infiltration to be judged to be three elastic sealing gasket joint faces or elastic sealing gasket and concrete surface seep water, 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, repeat above-mentioned steps and carry out water penetration test, the water-resistant pressure of 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. a T-shaped water tightness test device of shield tunnel elastic sealing gasket, is characterized in that, described verifying attachment comprises one piece of rigid strip floor and six pieces of stiffener plate; Wherein, described rigid strip floor is made up of mainboard and floor, and described mainboard becomes " T font " to arrange; Described floor is symmetricly set in the both sides of described mainboard waist respectively.
2. verifying attachment according to claim 1, is characterized in that, the flange portions width 175mm suitable for reading of described mainboard, end opening width 185mm, height 150mm; Web part width 87.5mm suitable for reading, end opening width 92.5mm, 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, and the size of floor sets according to the cross dimensions of sealing gasket, and the thickness of 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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| CN201510411144.0A CN104964797B (en) | 2015-07-14 | 2015-07-14 | A kind of elastic sealing gasket of shield tunnel " T font " watertightness method of inspection |
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| CN201510411144.0A CN104964797B (en) | 2015-07-14 | 2015-07-14 | A kind of elastic sealing gasket of shield tunnel " T font " watertightness method of inspection |
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| CN104964797B CN104964797B (en) | 2016-09-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738220A (en) * | 2016-04-12 | 2016-07-06 | 天津大学 | Pipe piece elastic sealing gasket water tightness testing method considering soil body influences |
| CN107121245A (en) * | 2017-04-26 | 2017-09-01 | 同济大学 | Shield tunnel lining segment two seals pad waterproof ability test device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738220A (en) * | 2016-04-12 | 2016-07-06 | 天津大学 | Pipe piece elastic sealing gasket water tightness testing method considering soil body influences |
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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 |
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| CN104964797B (en) | 2016-09-14 |
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