CN202661365U - Indoor experimental device for stripping resistance of composite inner lining material - Google Patents
Indoor experimental device for stripping resistance of composite inner lining material Download PDFInfo
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- CN202661365U CN202661365U CN2012202569780U CN201220256978U CN202661365U CN 202661365 U CN202661365 U CN 202661365U CN 2012202569780 U CN2012202569780 U CN 2012202569780U CN 201220256978 U CN201220256978 U CN 201220256978U CN 202661365 U CN202661365 U CN 202661365U
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Abstract
The utility model discloses an indoor experimental device for stripping resistance of a composite inner lining material. The indoor experimental device comprises a test block, wherein a resin adhesive layer is arranged on one surface of the test block, and while the other surface of the test block is provided with a flexible composite inner lining of an impermeable film; the resin adhesive layer of the flexible complex inner lining is adhered to the upper surface of the test block; a through hole which passes through the upper surface and the lower surface of the test block is arranged on the test block; a thread water port is arranged at one end of the through hole close to the lower surface of the test block; and a slotted hole is arranged at one end of the through hole close to the upper surface of the test block. The indoor experimental device disclosed by the utility model is simple in structure, and capable of flexibly changing the shapes and dimensions of different test blocks and slotted holes, the structure of the flexible inner lining, the formula of the resin, the curing condition, and the experimental condition in a laboratory, and has the capacity of really simulating the actual curing process of the inner lining layer and the actual stressing condition of the inner lining layer which is cured and then adhered to the test block under the resistance to the external hydraulic pressure, so as to test the limit value of the external hydraulic pressure of the inner lining layer.
Description
Technical field
The utility model relates to the test unit field, is specifically related to a kind of indoor experimental apparatus of peel resistance strength of composite lining material, is applicable to measure the compound lining that is bonded in the experiment material surface, the peel strength under the effect of compound lining dorsal part external water pressure.
Background technology
The small reservoir enormous amount that China's water conservancy industry is to be reinforced is gone in for water conservancy period in a big wag because most of reservoir was all built in five sixties of last century, because of historical reasons, and culvert pipe ubiquity variety of problems and defective under the dam.The reinforcing mode of at present culvert pipe under the dam generally being taked mainly contains, and dam body is reinforced, excavated to modular repair with ways such as Pipe shaped culvert demolition reconstruction and the reinforcings of cover lined steel pipe.But find in using that it is higher to excavate dam body dismounting reconstruction expenses, segment length during construction, dam body crosses the flood outstanding problem, excavate the dam body of rear backfill and originally between the dam body through settlement stability for many years, be not easy to cause new dam body crack because of non-uniform settling easily in conjunction with good.Cover lined steel pipe is reinforced, and sends into smoothly former culvert pipe in order to make steel pipe, and outer diameter of steel pipes must be less than former culvert pipe internal diameter 5～10cm even more, former caliber is dwindled too much, and in a single day when running into culvert pipe bending distortion or local faulting of slab ends, projection, very easily stuck, cause crag-fast awkward situation.In addition, grouting treatment must be carried out in the gap between steel pipe and the former culvert pipe, but that grouting quality is not easy is closely knit, when culvert pipe is longer more so.To bending or non-circular pipeline are arranged, steel pipe socket lining rule is at all at one's wit's end.In order to overcome above-mentioned drawback, in recent years, water conservancy system, is called the non-excavation pipeline based technique for in-situ remediation that flexible pipe turns over the lining method or pull method into and introduces reinforcement culvert under the dam in industry widespread uses such as oil, chemical industry, rock gas, municipal administrations a kind of.
But in industries such as oil, chemical industry, rock gas, municipal administrations, repairing the purpose of culvert pipe, mainly is to prevent that the fluid media (medium) of carrying from revealing from pipe wall crack; Inner lining material mainly is subjected to internal fluid pressure, does not have the situation of being stripped under the pipe external pressure.At water conservancy industry, the period of opening a sluice gate and drawing out some water between annual during irrigation period is not long, majority is free flow in the culvert pipe, the situation that pressure current occurs is few, at this moment, inner lining material is to prevent overpressure water through the pipe wall crack intrusion dam body that leaks, and the stress of inner lining material is identical with industries such as oil, chemical industry, rock gas, municipal administrations.In most cases, culvert pipe upstream closing gate, culvert pipe inside is anhydrous, and inner lining material mainly is to prevent from managing outer infiltration in the rejected regions such as pipe wall crack, hole banket dam body fine grained band inlet pipe, causes the dam body seepage failure.At this moment, the stress of inner lining material is different from industries such as oil, chemical industry, rock gas, municipal administrations: be bonded in the inner liner of culvert pipe inwall under the dam, cross over the crack, in both sides, crack and concrete tube wall tight bond, bear the seepage pressure in the crack.Known in the industry, the defective under the dam on the culvert pipe inwall is various, but to the most dangerous be penetrability crack or hole on the inwall, fracture width or hole diameter are more large more dangerous.For the crack of same penetrability width or the penetrability hole of same diameter, if the seepage pressure head is excessive, inner liner will be peeled off from concrete tube wall along edge of crack, or peel off together with the local tube wall concrete in crack.For this reason, must the peel strength of test inner liner under seepage pressure.
Because existing technical manual is not also stipulated experimental technique or the device of the peel strength of inner liner under outside tube water pressure, general with reference to mean of access in the industry, just draw cohesive strength or 90 ° of anti tear peel strengths between experiment liner and the concrete.
Wherein, China Engineering Construction Standardization Association's standard " Carbon Fiber Sheet-Reinforced rehabilitating concrete structure technology rules " (CECS 146:2003) has stipulated just to draw the assay method of cohesive strength, the resene binding material individual layer that the method is applicable to and carbon fiber plate is supporting or the mensuration of just drawing cohesive strength between composite coating and concrete.What it was tested out is that sample and concrete are subjected to simultaneously at whole surface of contact under the condition of pulling force, just draws cohesive strength along the adhesive surface normal direction.
90 ° of anti tear peel strengths are measured, stipulated by national standard " peeling strength test method " (GB/T 2790-1995), generally carry out at 90 °, 180 ° peeling strength test machines, what measure is that flexible material is along become 90 ° or 180 ° of directions, the cohesive strength when being got off by tearing with the bonding substrates face.
Above-mentioned two kinds of assay methods all can not react the actual forced status of place, crack inner lining material, therefore also just can not accurately measure the actual peel strength of liner under outside tube water pressure.
Patent of invention " a kind of measurement mechanism of compound lining peel strength " (patent No. 201010214055.4) has proposed the home position testing method of the anti-external water pressure of culvert pipe compound lining under a kind of dam, also be a kind of destructive test method, test complete need dam body boring and tube wall experiment position are repaired.When the building site without boring, during grouting equipment, need transport specially boring, grouting equipment, testing expenses are higher, test consuming time longer.In addition, when the culvert pipe diameter less, the culvert pipe inwall test prepare and test after during to the repair of pilot region, personnel are difficult to maybe can't enter, and need to adopt industrial robot, cause operating difficulties maybe can't operate, the difficulty of implementing test is larger.
The utility model content
The purpose of this utility model is the problems referred to above that exist for prior art, a kind of indoor experimental apparatus of peel resistance strength of composite lining material is provided, simulation is bonded in actual condition of cure and the rear actual loading situation under anti-external water pressure of curing of the compound lining of culvert pipe inwall under the dam, obtains the peel strength of liner under the effect of culvert pipe external water pressure.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions:
A kind of indoor experimental apparatus of peel resistance strength of composite lining material, comprise test block and simultaneously be provided with the flexible compound liner that resin adhesive layer and another side are provided with impermeable layer, the upper surface adhesion of the resin adhesive layer of flexible compound liner and test block, be provided with the upper surface that runs through test block and the through hole of lower surface in the test block, through hole is provided with the screw thread water nozzle near an end of the lower surface of test block, and through hole is provided with slotted eye near an end of the upper surface of test block.
A kind of indoor experimental apparatus of peel resistance strength of composite lining material, also comprise cover plate, packing ring, pressure thick stick, bolt and water nozzle, packing ring is arranged in the flexible compound and is lining with, cover plate is arranged on the packing ring, press thick stick to comprise the pressure thick stick and press down thick stick, upper pressure thick stick and press down thick stick and by bolt packing ring and cover plate are pressed in the flexible compound successively and are lining with, cover plate is provided with the installation through hole, through hole one end is installed is communicated with water nozzle, cover plate lower surface curvature is identical with the upper surface curvature of test block.
The utility model compared with prior art has the following advantages:
1, the utility model is simple in structure, need not to employ that boring, grouting equipment are holed at dam facing, grouting, sealing of hole etc., reinforces on-the-spotly during without ready-made boring, grouting equipment when dam, can significantly save test fee and test period.
2, the utility model at indoor real simulation be bonded in the actual condition of cure of the resinoid bond that is lining with in the flexible compound of culvert pipe inwall under the dam, all can carry out flexible transformation and combination to following condition as required: the material of test block, the roughness of test block surface and humidity, the geometric configuration of slotted eye and size in the test block, the structure of flexible compound liner, resin-bonded agent prescription, the impregnation method of resinoid bond and temperature humidity condition, resinoid bond curing mode (the time, temperature, pressure, solidify under the hydraulic pressure or water vapour or ultraviolet ray irradiation), wide adaptability.
If 3, test block described in the utility model directly intercepts culvert pipe appropriate location under the dam, the actual condition of cure and the actual conditions that then are bonded in the resinoid bond that is lining with in the flexible compound of culvert pipe inwall under the dam are in full accord.
4, after the resinoid bond on the utility model inner liner is bonded in and finishes curing in the test block, can apply water pressure at the dorsal part of inner liner, at indoor real simulation be bonded in the actual loading situation of the anti-external water pressure of the compound lining of culvert pipe inwall under the dam, test out the anti-external water pressure ultimate value of the inner liner of different curing, different curing times, convenient and practical.
Description of drawings
Fig. 1 is plan structure synoptic diagram of the present utility model;
Fig. 2 is M-M direction sectional structure synoptic diagram among Fig. 1;
Fig. 3 is that composite lining material is solidificated in the plan structure synoptic diagram in the test block;
Fig. 4 is N-N direction sectional structure synoptic diagram among Fig. 3.
Among the figure: the 1-test block; 2-flexible compound liner; The 3-slotted eye; 4-screw thread water nozzle; The 5-packing ring; The 6-cover plate; The 7-water nozzle; 8-presses thick stick; The 9-bolt.
Embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is described in further detail.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of indoor experimental apparatus of peel resistance strength of composite lining material, comprise test block 1 and simultaneously be provided with the flexible compound liner 2 that resin adhesive layer and another side are provided with impermeable layer, the upper surface adhesion of the resin adhesive layer of flexible compound liner 2 and test block 1, be provided with the upper surface that runs through test block 1 and the through hole of lower surface in the test block 1, through hole is provided with screw thread water nozzle 4 near an end of the lower surface of test block 1, and through hole is provided with slotted eye 3 near an end of the upper surface of test block 1.
A kind of indoor experimental apparatus of peel resistance strength of composite lining material, also comprise cover plate 6, packing ring 5, press thick stick 8, bolt 9 and water nozzle 7, packing ring 5 is arranged on the flexible compound liner 2, cover plate 6 is arranged on the packing ring 5, press thick stick 8 to comprise the pressure thick stick and press down thick stick, upper pressure thick stick and press down thick stick and by bolt 9 packing ring 5 and cover plate 6 are pressed on the flexible compound liner 2 successively, cover plate 6 is provided with the installation through hole, through hole one end is installed is communicated with water nozzle 7, cover plate 6 lower surface curvature are identical with the upper surface curvature of test block 1.
Adjusting bolt 9 is pressed on the upper surface of test block 1 cover plate 6, packing ring 5, flexible compound liner 2, and forms a cavity between cover plate 6, packing ring 5, flexible compound liner 2.Water or gas with uniform temperature and pressure enter in this cavity by the water nozzle 7 on the cover plate 6, and a side of flexible compound liner 2 impregnating resins is bonded on the upper surface of test block 1 until resin is finished curing.
After removing hold down gag, as shown in Figure 3, Figure 4, test external water pressure source enters into slotted eye 3 places by screw thread water nozzle 4 and through hole, and the side at flexible compound liner 2 resin adhesive layers that solidified applies test hydraulic pressure to inner liner.
The geometric configuration of aforesaid slotted eye 3 and size are that the culvert pipe inner wall defect arranges under the simulation dam, can be circle, polygon, slit etc., when slotted eye 3 both sides are provided with the discrepancy in elevation at test block 1 upper surface, can simulate culvert pipe inwall faulting of slab ends under the dam, fall the bank defective.
As a kind of preferred version, test block 1 directly intercepts culvert pipe appropriate location under the dam, and the slotted eye 3 in the test block 1 forms with cutting piece made from diamond (or water cutter) cutting in test block 1 by culvert pipe crack situation under the dam.Through hole in the test block 1 closely is provided with screw thread water nozzle 4 near an end of the lower surface of test block 1, and its effect is to be connected with the test pressure source in next step process of the test, and guarantees that screw thread water nozzle 4 is water-tight in test.
The inner ring that makes packing ring 5, but is no more than farthest test block upper surface outer and makes packing ring that one fixed width be arranged away from as far as possible from the hole of slotted eye 3.Packing ring 5 adopts the sheet material of neoprene plate or silicane rubber plate or similar material, cuts away core and makes.
The cover plate 6 of hold down gag adopts the upper surface of test block 1 as template, be separated by with plastic sheeting, watering resinoid bond (or the similar materials such as epoxy resin or sand-cement slurry) is made, namely the upper surface curvature with test block 1 is identical for the cover plate 6 lower surface curvature of hold down gag like this, when hold down gag was pressed to the test block upper surface with packing ring, cover plate lower surface, packing ring, liner and test block upper surface were just realized closely cooperating easily.Bore one in cover plate 6 centers through hole is installed, water nozzle 7 one ends closely insert in the installation through hole after smearing resinoid bond.Solidify if resin adhesive layer adopts under the UV-irradiation, then cover plate 6 adopts the thick poly (methyl methacrylate) plate of a printing opacity, and it is identical with the upper surface curvature of test block 1 that its lower surface curvature is ground to, and 3 also closely insert a water nozzle 7 in drill flute hole, center.
After immersion test resinoid bond on the flexible compound liner 2, make flexible lining 2 by resin bed and test block 1 bonding, bolt on 9, with cover plate 5, packing ring 4, flooded the flexible compound liner 2 of resin, test block 1 forces together, packing ring 4 has formed a cavity between cover plate 5 and flexible compound liner 2, water or gas with test temperature and pressure, enter cover plate 6 by water nozzle 7, in the cavity that packing ring 4 and flexible lining layer 2 impermeable layer one side surround, in flexible lining 2 impermeable layers one side, it is exerted pressure, it is close in the test block 1, until resin is finished curing.
Afterwards, remove bolt 9, cover plate 6, packing ring 5, screw thread water nozzle 4 is connected to be provided and shows on the pressure source of testing hydraulic pressure, water with test pressure enters into slotted eye 3 places through screw thread water nozzle 4, in the dorsal part that has cured the flexible compound liner 2 on the testing surface that is bonded in the test block 1 (side of resin bed), flexible compound liner 2 is applied test water pressure.After keeping test water pressure stability certain hour, read the pressure gauge reading on the test pressure source.Improve step by step test water pressure, leak until peeled off by water pressure with the upper surface somewhere of test block 1 at flexible compound liner 2, this one-level test pressure value is exactly the anti-external water pressure ultimate value of flexible compound liner 2.
In fact, the utility model is not limited in culvert pipe and the anti-external water pressure ultimate value of flexible lining under the test dam, flexible compound liner 2 materials, structure or thickness (for example adopt geomembrane and dacron felt multi-layer compound structure, with the composite structure of glass fibre, with composite structure of carbon fiber etc., every kind of material can adopt the different numbers of plies or thickness, and braiding or nonwoven etc. can be arranged); Changing the material of test block 1 or the shape and size of slotted eye 3 (for example can adopt the concreting of different intensity grades or cut out difformity or the test block of size 1, can build or cut out the slotted eye 3 of difformity or size in test block 1; Change cementing agent kind or prescription (for example epoxy adhesive or polyester resin binder etc.); Change curing mode, set time etc., by above-mentioned steps, all can test out under the various corresponding test conditions flexible compound liner 2 anti-external water pressure ultimate values.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (2)
1. the indoor experimental apparatus of a peel resistance strength of composite lining material, comprise test block (1) and simultaneously be provided with the flexible compound liner (2) that resin adhesive layer and another side are provided with impermeable layer, the upper surface adhesion of the resin adhesive layer of flexible compound liner (2) and test block (1), it is characterized in that: be provided with the upper surface that runs through test block (1) and the through hole of lower surface in the test block (1), through hole is provided with screw thread water nozzle (4) near an end of the lower surface of test block (1), and through hole is provided with slotted eye (3) near an end of the upper surface of test block (1).
2. the indoor experimental apparatus of a kind of peel resistance strength of composite lining material according to claim 1, it is characterized in that, also comprise cover plate (6), packing ring (5), press thick stick (8), bolt (9) and water nozzle (7), packing ring (5) is arranged on the flexible compound liner (2), cover plate (6) is arranged on the packing ring (5), pressure thick stick (8) comprises the pressure thick stick and presses down thick stick, upper pressure thick stick and press down thick stick and by bolt (9) packing ring (5) and cover plate (6) are pressed on the flexible compound liner (2) successively, cover plate (6) is provided with the installation through hole, through hole one end is installed is communicated with water nozzle (7), cover plate (6) lower surface curvature is identical with the upper surface curvature of test block (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202569780U CN202661365U (en) | 2012-06-01 | 2012-06-01 | Indoor experimental device for stripping resistance of composite inner lining material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202569780U CN202661365U (en) | 2012-06-01 | 2012-06-01 | Indoor experimental device for stripping resistance of composite inner lining material |
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| Publication Number | Publication Date |
|---|---|
| CN202661365U true CN202661365U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202569780U Withdrawn - After Issue CN202661365U (en) | 2012-06-01 | 2012-06-01 | Indoor experimental device for stripping resistance of composite inner lining material |
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| CN (1) | CN202661365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680398A (en) * | 2012-06-01 | 2012-09-19 | 湖北省水利水电规划勘测设计院 | Indoor experiment device for testing anti-stripping strength of composite lining materials |
-
2012
- 2012-06-01 CN CN2012202569780U patent/CN202661365U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680398A (en) * | 2012-06-01 | 2012-09-19 | 湖北省水利水电规划勘测设计院 | Indoor experiment device for testing anti-stripping strength of composite lining materials |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130109 Effective date of abandoning: 20140611 |
|
| RGAV | Abandon patent right to avoid regrant |