CN106769472A - Based on the vertical mechanical load Experiment on Function device of concrete and test method under axial dispersion and the effect of lateral confined pressure - Google Patents

Based on the vertical mechanical load Experiment on Function device of concrete and test method under axial dispersion and the effect of lateral confined pressure Download PDF

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Publication number
CN106769472A
CN106769472A CN201710018579.8A CN201710018579A CN106769472A CN 106769472 A CN106769472 A CN 106769472A CN 201710018579 A CN201710018579 A CN 201710018579A CN 106769472 A CN106769472 A CN 106769472A
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China
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confined pressure
pressure
concrete
water
water tank
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CN201710018579.8A
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Chinese (zh)
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CN106769472B (en
Inventor
谢京辉
雷倩
陈灯红
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三峡大学
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/08Investigating permeability, pore-volume, or surface area of porous materials
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12Pressure testing
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/08Investigating permeability, pore-volume, or surface area of porous materials
    • G01N2015/0813Measuring intrusion, e.g. of mercury
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0016Tensile or compressive
    • G01N2203/0019Compressive
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003Generation of the force
    • G01N2203/0042Pneumatic or hydraulic means
    • G01N2203/0048Hydraulic means

Abstract

The invention discloses based on the vertical mechanical load Experiment on Function device experiment method of concrete under axial dispersion and the effect of lateral confined pressure, the bottom steel collar is provided with the top of pressure-bearing platform, concrete sample is installed inside the steel collar of bottom, the top steel collar is installed at the top of concrete sample, it is connected through a screw thread inside the steel collar of top and has screwed top infiltration plate, uniformly fine hole is machined with top infiltration plate, the center draw-in groove of top infiltration plate is fitted with infiltration plate key, the inner tip of confined pressure water tank is welded with top force-transmitting pole, top force-transmitting pole middle part is provided with the infiltration aquaporin for running through.Type of the present invention is separate by axial dispersion environment and lateral confined pressure environment, while it is contemplated that the concrete sample of sizes, various concrete axial dispersions and lateral confined pressure experimental rig and test method oozed when permeation rate, multilevel confining pressure water pressure and axially different quiet dynamic load.

Description

Based on the vertical mechanical load effect of concrete under axial dispersion and the effect of lateral confined pressure Experimental rig and test method
Technical field
The present invention relates to concrete load test device field, it is based particularly under axial dispersion and the effect of lateral confined pressure The vertical mechanical load Experiment on Function device experiment method of concrete.
Background technology
At present, for concrete material in the axial compression experimental rig by axial dispersion and lateral confined pressure environment also not It is on the books, but it is directed to the research of such concrete coupling in the case of Various Complex also because the limit of such laboratory apparatus System can't carry out, and this is primarily due to traditional confined pressure bucket when concrete water environment is carried out, it is impossible to accomplish axial dispersion water ring Border and lateral confined pressure water environment are relatively independent, and this patent can dexterously solve this big problem.
The content of the invention
In order to solve based on the vertical mechanical load Experiment on Function device of concrete under axial dispersion and the effect of lateral confined pressure. Type of the present invention is separate by axial dispersion environment and lateral confined pressure environment, while it is contemplated that the concrete examination of sizes Part, various concrete axial dispersions oozed when permeation rate, multilevel confining pressure water pressure and axially different quiet dynamic load and Lateral confined pressure experimental rig and test method.
In order to solve the above-mentioned technical problem, the present invention proposes following technical scheme:Made based on axial dispersion and lateral confined pressure The vertical mechanical load Experiment on Function device of concrete under, it includes pressure-bearing platform base, and the outer rim of the pressure-bearing platform base adds Work has fixed card slot, and confined pressure water tank is provided with the fixed card slot, and the center of the pressure-bearing platform base is provided with pressure-bearing platform, The bottom steel collar is provided with the top of the pressure-bearing platform, concrete sample is installed inside the steel collar of bottom, it is described The top steel collar is installed at the top of concrete sample, is connected through a screw thread inside the top steel collar and has been screwed top Infiltration plate, uniform on the top infiltration plate to be machined with fine hole, the center draw-in groove of the top infiltration plate is fitted with infiltration Plate key, is installed with concrete deformation displacement meter on the pressure-bearing platform, run through being provided with infiltration inside the pressure-bearing platform Water drainage pipeline is welded with top force-transmitting pole up to the side of pressure-bearing platform base, the inner tip of the confined pressure water tank, on Portion force-transmitting pole middle part is provided with the infiltration aquaporin for running through.
The position that the bottom of the concrete sample is in contact with the bottom steel collar is set with water proof gum cover, the coagulation The position that native test specimen top is in contact with the top steel collar is set with water proof gum cover.
The inside of the bottom steel collar is connected through a screw thread and has screwed lower seal plate.
The concrete sample is fixed bloom and is fixed on pressure-bearing platform by test specimen, and the test specimen fixes bloom by many Bar mobile card slot is fixed on the top of pressure-bearing platform.
The upper probe downside weld displacement meter bar portion spring of the concrete deformation displacement meter.
Fixed bloom is installed outside the bottom of the confined pressure water tank, using fixed filler strip banding to confined pressure water tank side, By the fixed filler strip of multiple fixing bolts stabilization on fixed filler strip top and fixed bloom.
The top force-transmitting pole bottom is provided with the draw-in groove docked with the concrete top steel collar, it is ensured that the steel collar can be with It is completely embedded into power transmission column bottom.
Infiltration water inlet valve and confined pressure water inlet valve are installed with the outer wall of the confined pressure water tank, in pressure-bearing platform Infiltration water water discharging valve and confined pressure water water discharging valve are installed with the outer wall of base.
Confined pressure water tank upper ventilation mouth, and confined pressure bucket pressurization passageway are provided with the top of the confined pressure water tank.
Confined pressure water tank internal pressure sensor is installed on the inwall of the confined pressure water tank.
Experiment side based on the vertical mechanical load Experiment on Function device of concrete under axial dispersion and the effect of lateral confined pressure Method, it is characterised in that it is comprised the following steps:
Step one, before experiment, first carries out grinding process processing by concrete sample, checks that cylinder concrete sample ensures thereon It is nested into the bottom steel collar by lower surface without obvious crackle from bottom, by after the steel collar of bottom, being inserted in steel Water proof gum cover on the collar is until the top steel collar, infiltration plate key insertion top infiltration plate middle part draw-in groove oozes top Saturating plate is torqued-up to the screw thread on the inside of the steel collar of top, so far ensures that concrete sample top reaches fully sealed position, similarly The bottom steel collar is torqued-up to using the lower seal plate of lower bands hole, it is ensured that hydrospace is permeated in concrete sample bottom Definitely completely cut off with outside confined pressure hydrospace.
Step 2, pressure-bearing platform middle part is placed into by concrete sample, it is ensured that hole and infiltration in the middle part of lower seal plate Water drainage pipeline entrance is docked successfully, and fixing bloom using the test specimen at pressure-bearing platform top four sides will be mixed by four mobile card slots Solidifying soil test specimen is fixed on pressure-bearing platform middle part, and concrete deformation displacement meter probe is pressed downwards, detects concrete deformation displacement meter Bar portion spring whether normal operation, check the lower concrete deformation of hydraulic pressure high effect using the displacement changing curve of computer terminal Move whether meter normally runs.
Step 3, using hanging apparatus, will lift to the pressure-bearing platform base of pressure-bearing platform bottom, pressure-bearing platform base side Fixed card slot is provided with, side bayonet slot in confined pressure water tank is docked to the fixed card slot of pressure-bearing platform base side, and utilize confined pressure water Bucket confined pressure outside case fixes bloom and fixed filler strip blocks confined pressure water tank, the fixing bolt being tightened on filler strip, it is ensured that enclose Pressure water tank is still stable under the effect of high confining pressure water.
Step 4, concrete sample top is moved downward to using loading frame by top force-transmitting pole, is passed top with this On the inside of power post draw-in groove docking the top steel collar, it is ensured that concrete sample top is fully sealed, so far permeate aquaporin with it is outer Confined pressure hydrospace is not in contact with each other, and concrete sample axial dispersion hydrospace is definitely completely cut off with outside confined pressure hydrospace, when mixed When the data display that solidifying soil deformation displacement meter spreads out of reaches preset displacement, illustrate that top force-transmitting pole compresses concrete examination completely Part, now suspends loading frame.Infiltration water inlet valve and infiltration water water discharging valve are now opened, infiltration water water discharging valve passes through Pressure-bearing platform internal penetration water drainage pipeline leads to confined pressure water tank exterior space, when infiltration water from infiltration water water discharging valve discharge When, illustrating that now concrete sample has been saturated water and be completely immersed in, this device can contemplate and be immersed by adjusting different infiltration water Speed research its influence to concrete.
Step 5, closes the confined pressure water water discharging valve of confined pressure water tank bottom, opens confined pressure tank intake valve of water goalkeeper's pure water Confined pressure water tank is imported, after confined pressure water tank upper takes a breath mouth water outlet, illustrates that confined pressure water tank is filled up by pure water completely, now Confined pressure water tank upper ventilation mouth is switched repeatedly three to five times so that the air in confined pressure water tank is fully drained, using force (forcing) pump Confined pressure water tank inside confined pressure water is pressurizeed by confined pressure bucket pressurization passageway, is determined using confined pressure water tank internal pressure sensor Hydraulic pressure size, when confined pressure is close to default confined pressure value, closes confined pressure bucket pressurization passageway.
Step 6, axial pressure is carried out by transmitting axle force post to concrete, is spread out of by concrete deformation displacement meter Data message, the axial force-transmitting pole load test of control.
Step 7, after experiment terminates, closes infiltration water inlet valve, and hydrospace will be permeated using water water discharging valve is permeated Infiltration water emptying, while open the confined pressure water water discharging valve of confined pressure water tank bottom, by confined pressure water emptying, when two water discharging valves not After draining, confined pressure water tank is opened, concrete sample residue is taken out, and instrument is playbacked.
The method have the advantages that:
Realize being completely independent by by concrete axial dispersion water and lateral confined pressure water environment, it is possible to achieve concrete is by axle The complex situations of multiple coupled effect under being acted on to mechanical load to the concrete axial in the case of infiltration and under the effect of lateral high water head Experimental study, the patent is simultaneously can contemplate the concrete sample of sizes, various ooze permeation rate, multilevel confining pressure hydraulic pressure Concrete axial dispersion and lateral confined pressure experimental rig when power and axially different quiet dynamic load.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is main sectional view of the invention.
Fig. 2 is the steel collar in top of the present invention and confined pressure water tank fit structure schematic diagram.
Fig. 3 is present invention infiltration plate key and top steel collar fit structure schematic diagram.
In figure, concrete sample 1, the bottom steel collar 2, water proof gum cover 3, the top steel collar 4, infiltration plate key 5, on Portion's infiltration plate 6, lower seal plate 7, pressure-bearing platform 8, test specimen fix bloom 9, mobile card slot 10, infiltration aquaporin 11, concrete Deformation displacement meter 12, confined pressure water tank 13, pressure-bearing platform base 14, fixed card slot 15, fixed bloom 16, fixed filler strip 17, fixed spiral shell Bolt 18, top force-transmitting pole 19, draw-in groove 20, infiltration water inlet valve 21, infiltration water water discharging valve 22, confined pressure water water discharging valve 23, Confined pressure water inlet valve 24, confined pressure water tank upper ventilation mouth 25, confined pressure bucket pressurization passageway 26, confined pressure water tank internal pressure sensor 27。
Specific embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
Embodiment 1:
Such as Fig. 1-3, based on the vertical mechanical load Experiment on Function device of concrete under axial dispersion and the effect of lateral confined pressure, it is wrapped Pressure-bearing platform base 14 is included, the outer rim of the pressure-bearing platform base 14 is machined with fixed card slot 15, is provided with the fixed card slot 15 Confined pressure water tank 13, the center of the pressure-bearing platform base 14 is provided with pressure-bearing platform 8, and the top of the pressure-bearing platform 8 is provided with down The portion steel collar 2, concrete sample 1 is provided with inside the bottom steel collar 2, and the top of the concrete sample 1 is provided with The top steel collar 4, is connected through a screw thread inside the top steel collar 4 and has screwed top infiltration plate 6, the top infiltration Uniform on plate 6 to be machined with fine hole, the center draw-in groove of the top infiltration plate 6 is fitted with infiltration plate key 5, and the pressure-bearing is put down Be installed with concrete deformation displacement meter 12 on platform 8, the inside of the pressure-bearing platform 8 through being provided with infiltration water drainage pipeline until The side of pressure-bearing platform base 14, the inner tip of the confined pressure water tank 13 is welded with top force-transmitting pole 19, top force-transmitting pole 19 middle parts are provided with the infiltration aquaporin 11 for running through.
Further, the position that the bottom of the concrete sample 1 is in contact with the bottom steel collar 2 is set with water proof glue Set 3, the position that the top of the concrete sample 1 is in contact with the top steel collar 4 is set with water proof gum cover.Wherein described water proof The size of gum cover 3 can be changed according to test specimen size, and junction is processed by water-proof emulsion, reaches positive confinement, external water without Method enters inside gum cover from junction.
Further, the inside of the bottom steel collar 2 is connected through a screw thread and has screwed lower seal plate 7.
Further, the concrete sample 1 is fixed bloom 9 and is fixed on pressure-bearing platform 8 by test specimen, and the test specimen is consolidated Determine the top that bloom 9 is fixed on pressure-bearing platform 8 by a plurality of mobile card slot 10.The test specimen is blocked by four mobile card slots 10 Keep stabilization.
Further, the upper probe downside weld displacement meter bar portion spring of the concrete deformation displacement meter 12.Ensure Displacement meter elastic recovery capability.
Further, fixed bloom 16 is installed outside the bottom of the confined pressure water tank 13, using the fixed banding of filler strip 17 To the side of confined pressure water tank 13, by the fixed filler strip 17 of the stabilization of multiple fixing bolts 18 on the fixed top of filler strip 17 and fixed bloom 16。
Further, the bottom of top force-transmitting pole 19 is provided with the draw-in groove 20 docked with the concrete top steel collar 4, protects The card steel collar can be completely embedded into power transmission column bottom.
Further, infiltration water inlet valve 21 and the water inlet of confined pressure water are installed with the outer wall of the confined pressure water tank 13 Valve 24, is installed with infiltration water water discharging valve 22 and confined pressure water water discharging valve 23 on the outer wall of pressure-bearing platform base 14.
Further, the top of the confined pressure water tank 13 is provided with confined pressure water tank upper ventilation mouth 25, and confined pressure bucket pressurization Passage 26.
Further, confined pressure water tank internal pressure sensor 27 is installed on the inwall of the confined pressure water tank 13.
Embodiment 2:
Before experiment, concrete sample is first carried out into grinding process processing.
Filled based on the vertical mechanical load Experiment on Function of concrete under axial dispersion and the effect of lateral confined pressure using described Put, comprise the following steps:
Step one:Check that cylinder concrete sample 1 ensures that it, without obvious crackle, is nested into bottom by its upper and lower surface from bottom The steel collar 2, by the bottom steel collar 2 after, the water proof gum cover 3 being inserted on the steel collar 2 is until the top steel collar 4.Infiltration plate key 5 is inserted into the top infiltration middle part draw-in groove of plate 6, top infiltration plate 6 is torqued-up to the inner side of the top steel collar 4 Screw thread, so far ensures that the top of concrete sample 1 reaches fully sealed position, similarly using the lower seal plate 7 of lower bands hole Be torqued-up to the bottom steel collar 2, it is ensured that the bottom of concrete sample 1 permeate hydrospace and outside confined pressure hydrospace definitely every Absolutely.
Step 2:Concrete sample 1 is placed into the middle part of pressure-bearing platform 8, it is ensured that hole in the middle part of lower seal plate with ooze Permeable drainage pipeline entrance is docked successfully, and fixing bloom 9 using the test specimen at the top four sides of pressure-bearing platform 8 passes through four mobile card slots Concrete sample 1 is fixed on the middle part of pressure-bearing platform 8 by 10.Press concrete deformation displacement meter 12 downwards to pop one's head in, detect concrete The bar portion spring of deformation displacement meter 12 whether normal operation, under checking hydraulic pressure high to act on using the displacement changing curve of computer terminal Whether concrete deformation displacement meter 12 normally runs.
Step 3:Using hanging apparatus, by lifting to 14, pressure-bearing platform base on the pressure-bearing platform base of the bottom of pressure-bearing platform 8 14 sides are provided with fixed card slot 15, and side bayonet slot in confined pressure water tank 13 is docked to the fixed card slot of the side of pressure-bearing platform base 14 15, and confined pressure water tank 13 is blocked using the bucket confined pressure fixation bloom 16 and fixed filler strip 17 outside confined pressure water tank 13, it is tightened Fixing bolt 18 on filler strip, it is ensured that confined pressure water tank 13 is still stable under the effect of high confining pressure water.
Step 4:Top force-transmitting pole 19 is moved downward to the top of concrete sample 1 using loading frame, with this by top The docking of the draw-in groove 20 top steel collar 4 of the inner side of force-transmitting pole 19, it is ensured that the top of concrete sample 1 is fully sealed, and so far permeates water Passage 11 is not in contact with each other with peripheral confined pressure hydrospace, makes the axial dispersion hydrospace of concrete sample 1 exhausted with outside confined pressure hydrospace To isolation.When the data display that concrete deformation displacement meter 12 spreads out of reaches preset displacement, top force-transmitting pole 19 has been illustrated Concrete sample 1 is compressed completely, now suspends loading frame.Now open infiltration water inlet valve 21 and infiltration water water discharging valve 22, infiltration water water discharging valve 22 leads to the exterior space of confined pressure water tank 13 by the internal penetration water drainage pipeline of pressure-bearing platform 8, when oozing It is permeable from infiltration water water discharging valve 22 discharge when, illustrate that now concrete sample 1 has been saturated water and be completely immersed in, this device can be with Consider to immerse speed research its influence to concrete by adjusting different infiltration water.
Step 5:The confined pressure water water discharging valve 23 of the bottom of confined pressure water tank 13 is closed, opening confined pressure intaking vavle of water tank 24 will Pure water imports confined pressure water tank 13, after confined pressure water tank upper takes a breath 25 water outlet of mouth, illustrates that confined pressure water tank 13 is completely pure Water purification is filled up, now switch confined pressure water tank upper ventilation mouth 25 three to five times repeatedly so that the air in confined pressure water tank 13 is complete Full discharge, is pressurizeed, using confined pressure by confined pressure bucket pressurization passageway 26 using force (forcing) pump to the inside confined pressure water of confined pressure water tank 13 Water tank internal pressure sensor 27 determines hydraulic pressure size, when confined pressure is close to default confined pressure value, closes confined pressure bucket pressurization passageway 26.
Step 6:Axial pressure is carried out to concrete by transmitting axle force post 19, is passed by concrete deformation displacement meter 11 The data message for going out, the axial load test of force-transmitting pole 19 of control.
Step 7:After experiment terminates, infiltration water inlet valve 21 is closed, it is using water water discharging valve 22 is permeated that infiltration water is empty Between infiltration water emptying, while open the confined pressure water water discharging valve 23 of the bottom of confined pressure water tank 13, by confined pressure water emptying, as two rows Penstock after draining, does not open confined pressure water tank 13, takes out the residue of concrete sample 1, and instrument is playbacked.
By above-mentioned description, those skilled in the art completely can be in the model without departing from this invention technological thought In enclosing, various changes and amendments are carried out all within protection scope of the present invention.Unaccomplished matter of the invention, belongs to ability The common knowledge of field technique personnel.

Claims (10)

1., based on the vertical mechanical load Experiment on Function device of concrete under axial dispersion and the effect of lateral confined pressure, its feature exists In:It includes pressure-bearing platform base(14), the pressure-bearing platform base(14)Outer rim be machined with fixed card slot(15), the fixing card Groove(15)On confined pressure water tank is installed(13), the pressure-bearing platform base(14)Center pressure-bearing platform is installed(8), the pressure-bearing Platform(8)Top be provided with the bottom steel collar(2), in the bottom steel collar(2)Inside is provided with concrete sample(1), The concrete sample(1)Top the top steel collar is installed(4), the top steel collar(4)Inside passes through screw thread Connection has screwed top infiltration plate(6), plate is permeated on the top(6)On be uniformly machined with fine hole, plate is permeated on the top (6)Center draw-in groove be fitted with infiltration plate key(5), the pressure-bearing platform(8)On be installed with concrete deformation displacement meter (12), the pressure-bearing platform(8)Inside is through being provided with infiltration water drainage pipeline until pressure-bearing platform base(14)Side, it is described to enclose Pressure water tank(13)Inner tip be welded with top force-transmitting pole(19), top force-transmitting pole(19)Middle part is provided with the infiltration for running through Aquaporin(11).
2. the vertical mechanical load effect of concrete based under axial dispersion and the effect of lateral confined pressure according to claim 1 Experimental rig, it is characterised in that:The concrete sample(1)Bottom and the bottom steel collar(2)The position suit being in contact There is water proof gum cover(3), the concrete sample(1)Top and the top steel collar(4)The position being in contact is set with water proof glue Set, junction is processed by water-proof emulsion.
3. the vertical mechanical load effect of concrete based under axial dispersion and the effect of lateral confined pressure according to claim 1 Experimental rig, it is characterised in that:The bottom steel collar(2)Inside be connected through a screw thread and screwed lower seal plate(7).
4. the vertical mechanical load effect of concrete based under axial dispersion and the effect of lateral confined pressure according to claim 1 Experimental rig, it is characterised in that:The concrete sample(1)Bloom is fixed by test specimen(9)It is fixed on pressure-bearing platform(8)On, The test specimen fixes bloom(9)By a plurality of mobile card slot(10)It is fixed on pressure-bearing platform(8)Top.
5. the vertical mechanical load effect of concrete based under axial dispersion and the effect of lateral confined pressure according to claim 1 Experimental rig, it is characterised in that:The concrete deformation displacement meter(12)Upper probe downside weld displacement meter bar portion spring.
6. the vertical mechanical load effect of concrete based under axial dispersion and the effect of lateral confined pressure according to claim 1 Experimental rig, it is characterised in that:The confined pressure water tank(13)Bottom outside fixed bloom is installed(16), using fixed filler strip (17)Banding is to confined pressure water tank(13)Side, by fixed filler strip(17)Multiple fixing bolts on top(18)The fixed filler strip of stabilization (17)And fixed bloom(16).
7. the vertical mechanical load effect of concrete based under axial dispersion and the effect of lateral confined pressure according to claim 1 Experimental rig, it is characterised in that:The top force-transmitting pole(19)Bottom is provided with and the concrete top steel collar(4)The card of docking Groove(20), it is ensured that the steel collar can be completely embedded into power transmission column bottom.
8. the vertical mechanical load effect of concrete based under axial dispersion and the effect of lateral confined pressure according to claim 1 Experimental rig, it is characterised in that:The confined pressure water tank(13)Outer wall on be installed with infiltration water inlet valve(21)With enclose Pressure water inlet valve(24), in pressure-bearing platform base(14)Outer wall on be installed with infiltration water water discharging valve(22)With confined pressure water Water discharging valve(23).
9. the vertical mechanical load effect of concrete based under axial dispersion and the effect of lateral confined pressure according to claim 1 Experimental rig, it is characterised in that:The confined pressure water tank(13)Top be provided with confined pressure water tank upper ventilation mouth(25), and confined pressure Bucket pressurization passageway(26), the confined pressure water tank(13)Inwall on confined pressure water tank internal pressure sensor is installed(27).
10. the vertical machinery lotus of concrete being based under axial dispersion and the effect of lateral confined pressure using claim 1-9 any one Carry the test method of Experiment on Function device, it is characterised in that it is comprised the following steps:
Step one, before experiment, first carries out grinding process processing by concrete sample, checks cylinder concrete sample(1)Ensure It is nested into the bottom steel collar by its upper and lower surface without obvious crackle from bottom(2), by the bottom steel collar(2)Afterwards, will It is inserted in the steel collar(2)On water proof gum cover(3)Until the top steel collar(4), plate key will be permeated(5)Ooze on insertion top Saturating plate(6)Middle part draw-in groove, plate is permeated by top(6)It is torqued-up to the top steel collar(4)The screw thread of inner side, so far ensures concrete Test specimen(1)Top reaches fully sealed position, similarly using the lower seal plate of lower bands hole(7)It is torqued-up to bottom steel The collar processed(2), it is ensured that concrete sample(1)Bottom is permeated hydrospace and is definitely completely cut off with outside confined pressure hydrospace;
Step 2, by concrete sample(1)It is placed into pressure-bearing platform(8)Middle part, it is ensured that hole in the middle part of lower seal plate with ooze Permeable drainage pipeline entrance is docked successfully, using pressure-bearing platform(8)The test specimen at top four sides fixes bloom(9)By four movements Draw-in groove(10)By concrete sample(1)It is fixed on pressure-bearing platform(8)Middle part, presses downwards concrete deformation displacement meter(12)Visit Head, detects concrete deformation displacement meter(12)Bar portion spring whether normal operation, using computer terminal displacement changing curve examine The concrete deformation displacement meter tested under hydraulic pressure effect high(12)Whether normally run;
Step 3, using hanging apparatus, by lifting to pressure-bearing platform(8)On the pressure-bearing platform base of bottom(14), pressure-bearing platform base (14)Side is provided with fixed card slot(15), by confined pressure water tank(13)Interior side bayonet slot is docked to pressure-bearing platform base(14)Side is consolidated Determine draw-in groove(15), and utilize confined pressure water tank(13)Outside bucket confined pressure fixes bloom(16)And fixed filler strip(17)Block confined pressure water Case(13), the fixing bolt being tightened on filler strip(18), it is ensured that confined pressure water tank(13)It is still stable under the effect of high confining pressure water;
Step 4, using loading frame by top force-transmitting pole(19)It is moved downward to concrete sample(1)Top, with this by top Force-transmitting pole(19)The draw-in groove of inner side(20)The docking top steel collar(4), it is ensured that concrete sample(1)Top is fully sealed, extremely This infiltration aquaporin(11)It is not in contact with each other with peripheral confined pressure hydrospace, makes concrete sample(1)Axial dispersion hydrospace and outside Confined pressure hydrospace definitely completely cuts off, when concrete deformation displacement meter(12)When the data display for spreading out of reaches preset displacement, in explanation Portion's force-transmitting pole(19)Concrete sample is compressed completely(1), now suspend loading frame, now open infiltration water inlet valve (21)With infiltration water water discharging valve(22), permeate water water discharging valve(22)By pressure-bearing platform(8)Internal penetration water drainage pipeline Lead to confined pressure water tank(13)Exterior space, when infiltration water from infiltration water water discharging valve(22)During discharge, now concrete examination is illustrated Part(1)Water has been saturated to be completely immersed in, this device can contemplate by adjust it is different infiltration water immerse speed research its to coagulation The influence of soil;
Step 5, closes confined pressure water tank(13)The confined pressure water water discharging valve of bottom(23), open confined pressure intaking vavle of water tank(24) Pure water is imported into confined pressure water tank(13), when confined pressure water tank upper ventilation mouth(25)After water outlet, confined pressure water tank is illustrated(13) Filled up by pure water completely, confined pressure water tank upper ventilation mouth is now switched repeatedly(25)Three to five times so that confined pressure water tank(13) Interior air is fully drained, using force (forcing) pump by confined pressure bucket pressurization passageway(26)To confined pressure water tank(13)Internal confined pressure water enters Row pressurization, using confined pressure water tank internal pressure sensor(27)Hydraulic pressure size is determined, when confined pressure is close to default confined pressure value, is closed Confined pressure bucket pressurization passageway(26);
Step 6, by transmitting axle force post(19)Axial pressure is carried out to concrete, by concrete deformation displacement meter(11)Pass The data message for going out, the axial force-transmitting pole of control(19)Load test;
Step 7, after experiment terminates, closes infiltration water inlet valve(21), using permeating water water discharging valve(22)Will infiltration water sky Between infiltration water emptying, while open confined pressure water tank(13)The confined pressure water water discharging valve of bottom(23), by confined pressure water emptying, when two Individual water discharging valve after draining, does not open confined pressure water tank(13), take out concrete sample(1)Residue, and instrument is playbacked.
CN201710018579.8A 2017-01-11 2017-01-11 Based on the vertical mechanical load Experiment on Function device of concrete and test method under axial dispersion and the effect of lateral confining pressure CN106769472B (en)

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