CN202793922U - Pavement material shearing intensity and shearing fatigue tester based on strip-type test piece - Google Patents
Pavement material shearing intensity and shearing fatigue tester based on strip-type test piece Download PDFInfo
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- CN202793922U CN202793922U CN 201220429216 CN201220429216U CN202793922U CN 202793922 U CN202793922 U CN 202793922U CN 201220429216 CN201220429216 CN 201220429216 CN 201220429216 U CN201220429216 U CN 201220429216U CN 202793922 U CN202793922 U CN 202793922U
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Abstract
The utility model discloses a pavement material shearing intensity and shearing fatigue tester based on a strip-type test piece, which comprises a testing mold, a horizontal pull force loading mechanism, a vertical push force loading mechanism, and a displacement detecting unit, wherein the testing mold comprises two molds 1 which are sleeved at two ends of the test piece respectively and can only perform left-right movement in the horizontal direction and a mold 2 which can only perform left-right movement in the vertical direction; the horizontal pull force loading mechanism applies a horizontal pull force on the test piece through the molds 1; the vertical push force loading mechanism applies a vertical push force once or repeatedly on the test piece from the bottom up through the mold 2; the test piece is a strip-type test piece; and arc-shaped test piece clamping cavities for mounting the test piece are arranged in the molds1 and the mold 2. The pavement material shearing intensity and shearing fatigue tester has the advantages of simple structure, convenience in processing, making, detachment, use, and operation, good use effect, and accurate testing results. In addition, a horizontal pull force and a vertical push force can be loaded synchronously, and the intensity of the loaded force can be adjusted conveniently.
Description
Technical field
The utility model belongs to road engineering material tensile shear strength and tensile shear testing fatigue technical field, especially relates to a kind of ground surface material based on the strip test specimen and draws and cut intensity and draw and cut fatigue test device.
Background technology
In recent years, along with the development of China's economic construction, the large-tonnage vehicle has brought very large destruction to the use of road engineering, and one of them very important breakoff phenomenon is rut.Rut is caused by road surface shear failure, and the recent research achievement shows, the building form of shear stress might be the principal element that causes the pavement structure fatigure failure, under the identical shear stress condition, directly draws to be far smaller than the fatigue lifetime of cutting to press and cuts fatigue lifetime.Along with development in science and technology and progress and the people day by day increase for the vehicular load demand, the large-tonnage vehicle is day by day serious to the destruction of road engineering.Thereby, be badly in need of at present a kind of simple in structure, reasonable in design, use easy and simple to handle and good test effect, can the road pavement material draw and cut intensity and draw and cut the method and apparatus that fatigue is accurately tested, the concrete reason and the production process that cause the road surface breakage problem such as rut to produce with road pavement shear failure carry out accurate analysis and evaluation.
The utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, provide a kind of ground surface material based on the strip test specimen to draw to cut intensity and draw and cut fatigue test device, it is simple in structure, processing and fabricating and easy accessibility, use is easy to operate and result of use good, test result is accurate, can easy realization horizontal pull load synchronously with vertical thrust, and the loading force size is easy to adjust.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of ground surface material based on the strip test specimen draws to be cut intensity and draws and cut fatigue test device, it is characterized in that: comprise test specimen is carried out the testing mould of clamping, test specimen is continuously applied in the horizontal pull load maintainer, horizontal pull loading procedure of horizontal pull synchronously test specimen applied in the vertical thrust load maintainer of vertical thrust and the vertical thrust loading process test specimen is subjected to displacement the displacement detecting unit that detects in real time; Described testing mould comprise two respectively fixing sleeve be loaded on the test specimen clamping die of outside, the test specimen left and right sides, and before described horizontal pull loaded with vertical thrust, described test specimen level was clipped between mould one and the mould two; Two described test specimen clamping dies are respectively the mould two that only can carry out in the horizontal direction the mould one of move left and right and only can in the vertical direction move up and down, described mould one outside is equipped with in the vertical direction mould one is carried out spacing vertical limit device, and the outside is equipped with in the horizontal direction mould two is carried out spacing level to stop means on the mould two, and described mould two vertically hangs on the motionless object by spring; Described horizontal pull load maintainer is laid in mould one outside, and it is for being continuously applied the load maintainer of horizontal pull by a pair of test specimen of mould; Described vertical thrust load maintainer is positioned at mould two belows, and its load maintainer for from the bottom to top test specimen being applied once vertical thrust or repeatedly repeats to apply vertical thrust by mould two;
Described test specimen is the strip test specimen, the structure of described mould one and mould two is all identical with size, and the two is the cube mold that inside has test specimen clamping chamber, the structure in described test specimen clamping chamber and size all with the structure of test specimen end and measure-alike, described test specimen clamping chamber is rectangular cavity.
Above-mentioned ground surface material based on the strip test specimen draws to be cut intensity and draw and cut fatigue test device, it is characterized in that: the xsect of described strip test specimen is square.
Above-mentioned ground surface material based on the strip test specimen draws to be cut intensity and draws and cut fatigue test device, it is characterized in that: described horizontal pull load maintainer is included in the mass that under the self gravitation effect test specimen is applied horizontal pull, described mass is carried out the lifting rope and the deflection sheave that is laid in mould one outside of lifting, one end of described lifting rope is fixed on the lateral wall of mould one, and the other end of lifting rope is fixed on the described mass after walking around deflection sheave, lifting rope between described mould one and the deflection sheave is level to laying, and the lifting rope between deflection sheave and the described mass is vertically to laying.
Above-mentioned ground surface material based on the strip test specimen draws to be cut intensity and draws and cut fatigue test device, it is characterized in that: described displacement detecting unit comprises the vertical displacement sensor that the displacement to the test specimen in the vertical direction detects in real time, and described vertical displacement sensor is laid on the mould two.
Above-mentioned ground surface material based on the strip test specimen draws to be cut intensity and draws and cut fatigue test device, it is characterized in that: comprise also for the parameter input unit one of inputting test specimen vertical displacement higher limit, vertical displacement displacement information that sensor detects is carried out the data processor of analyzing and processing and repeatedly repeat to apply vertical thrust process the vertical thrust that described vertical thrust load maintainer is applied on the test specimen is loaded the counter that number of times is added up automatically that described parameter input unit one, counter and vertical displacement sensor all join with data processor.
Above-mentioned ground surface material based on the strip test specimen draws to be cut intensity and draws and cut fatigue test device, it is characterized in that: also comprise be used to inputting described horizontal pull load maintainer applying horizontal pull value F
LevelApply vertical thrust magnitude F with described vertical thrust load maintainer
VerticallyParameter input unit two, described parameter input unit two is joined with data processor; Described vertical thrust load maintainer is electric vibrating hammer or electric piston; Described electric vibrating hammer and electric piston are controlled by described data processor, and the two all joins with data processor.
Above-mentioned ground surface material based on the strip test specimen draws to be cut intensity and draws and cut fatigue test device, it is characterized in that: described vertical limit device comprises that twice are the horizontal concrete chute of parallel laying, described mould one is installed between the described horizontal concrete chute of twice, and mould one can move horizontally along the described horizontal concrete chute of twice; Described level comprises that to stop means twice are the vertical slideway of parallel laying, and described mould two is installed between the described vertical slideway of twice, and mould two can move up and down along the described vertical slideway of twice.
Above-mentioned ground surface material based on the strip test specimen draws to be cut intensity and draw and cut fatigue test device, it is characterized in that: described mass comprises that colligation is fixed on the scale pan on the lifting rope and is positioned over counterweight in the scale pan.
Above-mentioned ground surface material based on the strip test specimen draws to be cut intensity and draws and cut fatigue test device, and it is characterized in that: described vertical thrust load maintainer is vibration hammer or piston; Described displacement detecting unit also comprises the horizontal displacement sensors that displacement in the horizontal direction detects in real time to test specimen, described horizontal displacement sensors be laid on the mould one or be laid in mould one and mould two between the gap.
Above-mentioned ground surface material based on the strip test specimen draws to be cut intensity and draws and cut fatigue test device, and it is characterized in that: described test specimen is fixed in the described test specimen clamping chamber by glue is fastening.
The utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design and processing and fabricating and easy accessibility.
2, use easy and simple to handlely, can easy realization apply synchronously pulling force and shearing to test specimen, before the actual test, only need tested ground surface material is made as test specimen and adopts the utility model to test to get final product.
3, load mode is flexible, has two kinds of loading methods, and wherein a kind of mode is when horizontal pull loads, from the bottom to top test specimen is applied once vertical thrust, carries out fast drawing of test specimen cut intensity, accurately tests; Another kind of mode is when horizontal pull loads, test specimen is applied repeatedly vertical thrust until test specimen shear failure is carried out fast so that drawing of test specimen cut, accurately tests fatigue lifetime from the bottom to top.
4, test specimen adopts the strip test specimen, its reasonable in design, and test specimen processing and easy to make, horizontal pull adds carried convenient with vertical thrust.
5, the mould one that adopts and mould two are simple in structure, reasonable in design and result of use is good, the two inside is respectively arranged with the square test specimen clamping chamber consistent with the test specimen two-end structure, during actual the use, can be easy, spend test specimen securely and carry out reliable clamping.
6, adopt vertically to stop means and level to limit device structure simple, reasonable in design and processing and fabricating and easy accessibility, input cost is low, simultaneously because mould one and mould two are cube mold, thereby vertically spacing to stop means and level to stop means implements very conveniently, and the two limit accuracy is higher.
7, result of use is good and test result is accurate, the horizontal pull load maintainer does not all directly load test specimen with vertical thrust load maintainer, during actual test, the horizontal pull load maintainer carries out horizontal pull by a pair of test specimen of mould and loads, and vertical thrust load maintainer carries out vertical thrust by two pairs of test specimens of mould and loads, and by displacement transducer test specimen is subjected to displacement accurately in the loading procedure simultaneously and tests.During actual test, by vertically loading synchronously to affined mould two easy pulling force and the shearings realized of displacement to the affined mould one of displacement and level, can be effectively cut intensity to drawing of test specimen carries out fast, accurately tests with drawing to cut fatigue lifetime, remedied and do not tested ground surface material in the present road engineering and draw and cut intensity and draw the correlation technique of cutting fatigue lifetime and the deficiency of testing tool, correspondingly efficiently solved current ground surface material and draw the problem that to determine fatigue lifetime of cutting.
8, load mode is simple and convenient and be easy to realize, just can realize constant load or CYCLIC LOADING by simple counterweight and piston, and can change arbitrarily by the weight conversion of counterweight the size of the horizontal pull that loads; The electric piston that adopts directly is not connected with mould two, both are released state, only have when needs load test specimen, and piston just loads mould two from the bottom to top, and the test effect is accurate, can be measured accurately the displacement deformation of test specimen by displacement transducer.
9, widely applicable, be applicable to drawing of most of asphalt pavement material and cut intensity and cut fatigue lifetime test with drawing, also can be used for testing simultaneously drawing of other materials and cut intensity and cut fatigue lifetime with drawing, such as the material of the aspects such as Geological Engineering such as rock mass, the soil body.
10, experimental result is stable, and test result can be determined tentatively that drawing of material cut intensity and drawn and cut fatigue lifetime.
11, practical value is high, and test result can drawing of Preliminary Determination test specimen be cut fatigue lifetime, can effectively solve the destruction problem that pavement engineering is met for many years, such as rut etc.
In sum, the utility model is simple in structure, processing and fabricating and easy accessibility, use is easy to operate and result of use good, test result is accurate, can easy realization horizontal pull load synchronously with vertical thrust, and the loading force size is easy to adjust.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is use state reference map of the present utility model.
Fig. 2 is schematic block circuit diagram of the present utility model.
Fig. 3 is that the utility model institute employing level is to the use state reference map of stop means.
Description of reference numerals:
The 1-test specimen; 2-mould one; 3-mould two;
4-spring; 5-vertical displacement sensor; 6-horizontal displacement sensors;
7-ball; 8-counter; 9-data processor;
10-1-lifting rope; 10-2-scale pan; 10-3-deflection sheave;
10-4-counterweight; 11-electric piston; 13-touching display screen;
14-support fixed frame; 15-horizontal concrete chute; 16-vertical slideway;
17-vertical spacing spare; 18-screw two; 19-motionless object;
20-geometrical clamp; 21-screw one.
Embodiment
As shown in Figure 1 and Figure 2, the utility model comprises test specimen 1 is carried out the testing mould of clamping, test specimen 1 is continuously applied in the horizontal pull load maintainer, horizontal pull loading procedure of horizontal pull synchronously test specimen 1 is applied in the vertical thrust load maintainer of vertical thrust and the vertical thrust loading process the test specimen 1 displacement detecting unit that detects in real time that is subjected to displacement; Described testing mould comprise two respectively fixing sleeve be loaded on the test specimen clamping die of outside, test specimen 1 left and right sides, and before described horizontal pull loaded with vertical thrust, described test specimen 1 level was clipped between mould 1 and the mould 23.Two described test specimen clamping dies are respectively the mould 23 that only can carry out in the horizontal direction the mould 1 of move left and right and only can in the vertical direction move up and down, described mould one 2 outsides are equipped with in the vertical direction mould 1 are carried out spacing vertical limit device, and the outside is equipped with in the horizontal direction mould 23 is carried out spacing level to stop means on the mould 23, and described mould 23 vertically hangs on the motionless object 19 by spring 4.Described horizontal pull load maintainer is laid in mould one 2 outsides, and it is for being continuously applied the load maintainer of horizontal pull by one 2 pairs of test specimens 1 of mould.Described vertical thrust load maintainer is positioned at mould 23 belows, and its load maintainer for from the bottom to top test specimen 1 being applied once vertical thrust or repeatedly repeats to apply vertical thrust by mould 23.
Described test specimen 1 is the strip test specimen, the structure of described mould 1 and mould 23 is all identical with size, and the two is the cube mold that inside has test specimen clamping chamber, the structure in described test specimen clamping chamber and size all with the structure of test specimen 1 end and measure-alike, described test specimen clamping chamber is rectangular cavity.
In the present embodiment, the xsect of described strip test specimen is square.
During actual processing and fabricating, the gap width between described mould 1 and the mould 23 is 0.5cm～2cm.In the present embodiment, the gap width between described mould 1 and the mould 23 is 1.75cm.The length of described test specimen 1 is 16.5cm, and the xsect length of side of test specimen 1 is 5cm.
Before described horizontal pull loaded with vertical thrust, described test specimen 1 was level and lays.
In the present embodiment, described mould one 2 fixing sleeves are loaded on the left end outside of test specimen 1, and mould 23 fixing sleeves are loaded on the right-hand member outside of test specimen 1.
In the actual use procedure, also described mould one 2 fixing sleeves can be loaded on the right-hand member outside of test specimen 1, and mould 23 fixing sleeves are loaded on the left end outside of test specimen 1.
In the present embodiment, the structure of described mould 1 and mould 23 is all identical with size, and the material of the two is steel or organic glass.Described mould 1 and mould 23 are the cube mold that inside has test specimen clamping chamber, the structure in described test specimen clamping chamber and size all with the structure of test specimen 1 end and measure-alike.
In the actual test process, the gap width between described mould 1 and the mould 23 is 1.75cm ± 0.25cm.In the present embodiment, the gap width between described mould 1 and the mould 23 is 1.75cm, when specifically testing, can according to actual needs, the gap width between mould 1 and the mould 23 be adjusted accordingly.
During actual the use, described mould 1 and mould 23 are left-right symmetric and lay.In the present embodiment, the vertical height of described mould 1 and mould 23 is 10cm, and the thickness of described mould 1 and mould 23 is 0.07m, and the transverse width of mould 1 and mould 23 is 8cm.
In the present embodiment, described test specimen 1 is fixed in the described test specimen clamping chamber by glue is fastening.In the actual test process, by glue can be easy and securely with the two ends, the left and right sides of test specimen 1 respectively fixing sleeve be loaded in mould 1 and the mould 23.
In the present embodiment, described horizontal pull load maintainer is included in the mass that under the self gravitation effect test specimen 1 is applied horizontal pull, described mass is carried out the lifting rope 10-1 and the deflection sheave 10-3 that is laid in mould one 2 outsides of lifting, the end of described lifting rope 10-1 is fixed on the lateral wall of mould 1, and the other end of lifting rope 10-1 is fixed on the described mass after walking around deflection sheave 10-3, lifting rope 10-1 between described mould 1 and the deflection sheave 10-3 is level to laying, and the lifting rope 10-1 between deflection sheave 10-3 and the described mass is vertically to laying.In the actual test process, also can adopt the horizontal force application apparatus of other type.
During actual the use, adopt mass and under the self gravitation effect, test specimen 1 applied horizontal pull, simple in structure, easy accessibility not only, and add carried convenient, horizontal loading force size control is simple and easy.
In the present embodiment, described mass comprises that colligation is fixed on the scale pan 10-2 on the lifting rope 10-1 and is positioned over the interior counterweight 10-4 of scale pan 10-2.In the test process, when need are adjusted horizontal loading force size, only need adjust the counterweight 10-4 in the scale pan 10-2 and get final product, and corresponding so that in the scale pan 10-2 counterweight of counterweight 10-4 with need loading horizontal force value equate to get final product.
In the actual test process, the displacement by 5 pairs of test specimen 1 in the vertical directions of vertical displacement sensor detects in real time.And during actual installation, described vertical displacement sensor 5 is fixed on the motionless object 19 by geometrical clamp 20.
In the present embodiment, because test specimen 1 is set in the mould 23, thereby the displacement of mould 23 in the vertical directions is consistent with the displacement of test specimen 1 in the vertical direction in the test process, only need detect in real time the displacement of mould 23 in the vertical directions during actual test to get final product.
Simultaneously, the utility model also comprises for the parameter input unit one of input test specimen vertical displacement higher limit, vertical displacement sensor 5 displacement information that detects is carried out the data processor 9 of analyzing and processing and repeatedly repeat to apply vertical thrust process the vertical thrust that described vertical thrust load maintainer is applied on the test specimen 1 is loaded the counter 8 that number of times is added up automatically, and described parameter input unit one, counter 8 and vertical displacement sensor 5 all join with data processor 9.
In the present embodiment, ground surface material of the present invention draws to be cut intensity and draws and cut fatigue test device, also comprises the display unit that joins with data processor 9.
Simultaneously, the utility model also comprises be used to inputting described horizontal pull load maintainer and applies horizontal pull value F
LevelApply vertical thrust magnitude F with described vertical thrust load maintainer
VerticallyParameter input unit two, described parameter input unit two is joined with data processor 9.
In the present embodiment, described vertical thrust load maintainer is electric vibrating hammer or electric piston 11.Described electric vibrating hammer and electric piston 11 are controlled by described data processor 9, and the two all joins with data processor 9.In the actual use procedure, only need to apply vertical thrust magnitude F by the described vertical thrust load maintainer of described parameter input unit two inputs
Vertically, data processor 9 is just directly controlled described electric vibrating hammer or electric piston 11 automatically, vertical thrust load maintainer is applied to vertical thrust magnitude is adjusted into F on the test specimen 1
Vertically, actual to control very easy and vertical thrust size control easy, loads effective.
Described vertical limit device comprises that twice are the horizontal concrete chute 15 of parallel laying, and described mould 1 is installed between the described horizontal concrete chute 15 of twice, and mould 1 can move horizontally along the described horizontal concrete chute 15 of twice.During actual the use, the described horizontal concrete chute 15 of twice is laid in respectively the up and down both sides of mould 1.In the present embodiment, between the described horizontal concrete chute 15 of twice and the mould 1 a plurality of balls 7 are installed all.When actual installation was laid, described vertical limit device was fixed on the experiment table by a plurality of support fixed frame 14 levels.
As shown in Figure 3, described level comprises that to stop means twice are the vertical slideway 16 of parallel laying, and described mould 23 is installed between the described vertical slideway 16 of twice, and mould 23 can move up and down along the described vertical slideway 16 of twice.In the present embodiment, the structure of the described vertical slideway 16 of twice is all identical with size, and described vertical slideway 16 is the vertical pole of rectangle for xsect, and the bottom of described vertical pole is fixed on the described experiment table.In the present embodiment, the bottom of described vertical pole is fixed on the described experiment table by screw 1.
In the present embodiment, the symmetrical laying before and after the described vertical slideway 16 of twice is.The rear portion of described mould 23 is provided with vertical spacing spare 17, be fixed by screw 2 18 between described vertical spacing spare 17 and the mould 23 and be connected, and the junction between vertical spacing spare 17 and the mould 23 forms the vertical chute of rectangle that former and later two are installed for vertical slideway 16.
In the actual use procedure, described vertical thrust load maintainer also can be vibration hammer or the piston of on-electric.In the present embodiment, described displacement detecting unit also comprises the horizontal displacement sensors 6 that displacement in the horizontal direction detects in real time to test specimen 1, described horizontal displacement sensors 6 be laid on the mould 1 or be laid in mould 1 and mould 23 between the gap.During concrete the use, the spacing between mould 1 and the mould 23 can be adjusted according to actual needs automatically.
In the present embodiment, described parameter input unit one, parameter input unit two and described display unit are integrated into touching display screen 13.
During actual the use, test process of the present utility model may further comprise the steps:
In the present embodiment, described mould 1 and mould 23 are left-right symmetric and lay.In the present embodiment, the vertical height of described mould 1 and mould 23 is 10cm, and the thickness of described mould 1 and mould 23 is 0.07m, and the transverse width of mould 1 and mould 23 is 5cm.
The two ends, the left and right sides of described test specimen 1 respectively fixing sleeve are loaded in mould 1 and the mould 23, and by glue with the two ends, the left and right sides of test specimen 1 fastening being fixed in mould one 2 interior set described test specimen clamping chambeies one and the mould 23 interior set test specimen clamping chambeies two respectively, and this moment, test specimen 1 was in horizontality.
In the present embodiment, needing the test ground surface material is the AC-13 bituminous concrete, and the AC-13 asphalt mix design is the standard intermediate value, and bitumen aggregate ratio is 4%, density 2.376g/cm
3During actual test, adopt the present invention to cut intensity and to draw drawing of other ground surface material and cut fatigue and test.
Wherein, test specimen 1 is being loaded horizontal pull F
LevelThe time draw and cut intensity when testing, its test process is as follows:
Step 2011, horizontal pull load: according to predefined horizontal pull value
Level, adopt the horizontal pull load maintainer and be continuously applied horizontal pull F by one 2 pairs of test specimens 1 of mould
Level
In the present embodiment, described horizontal pull load maintainer is included in the mass that under the self gravitation effect test specimen 1 is applied horizontal pull, described mass is carried out the lifting rope 10-1 and the deflection sheave 10-3 that is laid in mould one 2 outsides of lifting, the end of described lifting rope 10-1 is fixed on the lateral wall of mould 1, and the other end of lifting rope 10-1 is fixed on the described mass after walking around deflection sheave 10-3, lifting rope 10-1 between described mould 1 and the deflection sheave 10-3 is level to laying, and the lifting rope 10-1 between deflection sheave 10-3 and the described mass is vertically to laying.In the actual test process, also can adopt the horizontal force application apparatus of other type.
During actual the use, adopt mass and under the self gravitation effect, test specimen 1 applied horizontal pull, simple in structure, easy accessibility not only, and add carried convenient, horizontal loading force size control is simple and easy.
In the present embodiment, described mass comprises that colligation is fixed on the scale pan 10-2 on the lifting rope 10-1 and is positioned over the interior counterweight 10-4 of scale pan 10-2.In the test process, when need are adjusted horizontal loading force size, only need adjust the counterweight 10-4 in the scale pan 10-2 and get final product, and corresponding so that in the scale pan 10-2 counterweight of counterweight 10-4 with need loading horizontal force value equate to get final product.
Step 2012, the vertical thrust of single load: the horizontal pull F described in the step 2011
LevelIn the loading procedure, adopt vertical thrust load maintainer and test specimen 1 is applied the vertical thrust that once makes test specimen 1 that shear failure occurs from top to bottom by mould 23, the vertical thrust that apply this moment is F
MaxAnd it is that test block 1 is loading horizontal pull F
LevelThe time maximum vertical thrust that can bear.
In the present embodiment, described vertical thrust load maintainer is electric vibrating hammer or electric piston 11.Described electric vibrating hammer and electric piston 11 are controlled by described data processor 9, and the two all joins with data processor 9.
In the actual test process, described test specimen 1 installs and carries out in rear and the step 2011 before the horizontal pull loading, should be according to test needs, the horizontal pull value F that specifically need load
LevelWith vertical thrust magnitude F
Vertically, the horizontal pull vertical thrust size big or small and that described vertical thrust load maintainer loads that described horizontal pull load maintainer loads is adjusted.
In the present embodiment, during horizontal pull size that described horizontal pull load maintainer is loaded, only needing needs the horizontal pull value F that loads according to test
Level, and by the counterweight 10-4 in the scale pan 10-2 is adjusted, the gravity of described scale pan 10-2 and counterweight 10-4 is adjusted into the horizontal pull value F that loads with need
LevelUnanimously get final product, then finish the adjustment process of described horizontal pull horizontal pull that load maintainer loads, practical operation is very easy.
And when the vertical thrust size that described vertical thrust load maintainer is loaded is adjusted, because electric vibrating hammer or the electric piston 11 of described vertical thrust load maintainer for being controlled by data processor 9, then only need the vertical thrust magnitude F that need load by parameter input unit two input tests of joining with data processor 9
Vertically, data processor 9 is just directly controlled electric vibrating hammer or electric piston 11 automatically afterwards, and the vertical thrust that electric vibrating is hammered into shape or electric piston 11 applies is adjusted into F
VerticallyWhen vertical thrust load maintainer was the electric vibrating hammer of on-electric or electric piston 11 as described, the vertical thrust that needs artificially apply described vertical thrust load maintainer was adjusted.In the present embodiment, described vertical thrust load maintainer is electric piston 11.Thereby in the actual use procedure, only need to apply vertical thrust magnitude F by the described vertical thrust load maintainer of described parameter input unit two inputs
Vertically, data processor 9 is just directly controlled described electric vibrating hammer or electric piston 11 automatically, vertical thrust load maintainer is applied to vertical thrust magnitude is adjusted into F on the test specimen 1
Vertically, actual to control very easy and vertical thrust size control easy, loads effective.
In the actual use procedure, also can adopt the power sensor that joins with data processor 9 that described vertical thrust load maintainer is applied vertical thrust and detect in real time, and the numerical value synchronous driving is detected to data processor 9 in institute.
During actual the use, vertical thrust size big or small until the horizontal pull that described horizontal pull load maintainer loads and that described vertical thrust load maintainer loads just can be carried out the loading of horizontal pull and vertical thrust after adjusting and finishing.
In addition, in the actual test process, carry out in the step 2011 before the horizontal pull loading, when the vertical thrust size that described vertical thrust load maintainer is loaded is adjusted, should be first according to general knowledge known in this field, specifically those skilled in the art tentatively determine first the vertical thrust magnitude that loads when carrying out the vertical thrust loading of single in the step 2012 to the empirical value of the shearing strength of need test ground surface material.
Afterwards, at the horizontal pull F described in the step 2011
LevelIn the loading procedure, by described vertical thrust load maintainer test specimen 1 is applied once vertical thrust (numerical value of this vertical thrust is the above-mentioned vertical thrust magnitude of tentatively determining) first, and in this vertical thrust loading process, the stress of test specimen 1 is observed and according to observed result currently applied vertical thrust numerical value adjusted: when observing test specimen 1 shear failure does not occur, illustrate that currently applied vertical thrust is less than F
Max, then need currently applied vertical thrust numerical value is increased adjustment; When observing test specimen 1 shear failure when serious, illustrate that currently applied vertical thrust is greater than F
Max, then need currently applied vertical thrust numerical value is reduced to adjust.Afterwards, material, structure and the size of the test specimen 1 after the test specimen 1(that more level clamps between mold exchange 1 and the mould 23 changes are all identical with the test specimen 1 described in the step 1), and according to step 2011 to the described method of step 2012, according to the vertical thrust numerical value after adjusting, the test specimen 1 after changing is carried out horizontal pull F again
LevelThe vertical thrust of single in the loading procedure loads, and in the vertical thrust loading process after should adjusting, state to test specimen 1 is observed, and according to observed result and by above-mentioned method of adjustment currently applied vertical thrust numerical value is adjusted, until obtain test specimen 1 at horizontal pull F
LevelVertical thrust F when in the loading procedure shear failure occuring
Max
In the present embodiment, when vertical thrust numerical value is adjusted, only need by the vertical thrust magnitude after the described parameter input unit two input tests adjustment, data processor 9 is just directly controlled electric vibrating hammer or electric piston 11 automatically afterwards, so that the vertical thrust that electric vibrating is hammered into shape or electric piston 11 applies is adjusted automatically.
Described horizontal pull F
LevelIn the loading procedure, when the vertical thrust numerical value that loads less than F
MaxThe time, shear failure can not occur in test specimen 1; Equal F and work as the vertical thrust numerical value that loads
MaxThe time, shear failure occurs in test specimen 1.That is to say F
MaxFor test specimen 1 is loading horizontal pull F
LevelThe time maximum shear that can bear, it is vertical with the material axis, and
For described test specimen 1 is loading horizontal pull F
LevelThe time shearing strength (horizontal pull F
LevelIn the loading procedure, the strength degree when test specimen 1 is shear action), S is the shear area of test specimen 1 in the vertical thrust loading process described in the step 2012.
Step 2013, draw and cut intensity and calculate: according to formula
With
Extrapolate test specimen 1 in the horizontal tensile stress sigma of loading
hThe time draw and cut intensity σ
c, F in the formula
MaxFor test block described in the step 2,012 1 is loading horizontal pull F
LevelThe time maximum vertical thrust that can bear, S is the shear area of test specimen 1 in the vertical thrust loading process described in the step 2012.
In the present embodiment, the shear area S of test specimen 1 is the area of test specimen 1 middle part breaking part in the vertical thrust loading process, i.e. the area of test specimen 1 middle part vertical section, and S=d3 * d4=0.05m * 0.05m=0.0025m
2Wherein, d3 is the vertical height of described strip test specimen, and d4 is that d3 is the thickness of described strip test specimen.F
MaxUnit be KN, and σ
cUnit be MPa.
Step 2021, horizontal pull load: according to predefined horizontal pull value
Level, adopt the horizontal pull load maintainer and be continuously applied horizontal pull F by one 2 pairs of test specimens 1 of mould
Level
In the present embodiment, carry out in the step 2021 before the horizontal pull loading, should be according to test needs, the horizontal pull value F that specifically need load
LevelWith vertical thrust magnitude F
VerticallyThe vertical thrust size that the horizontal pull size that described horizontal pull load maintainer is loaded and described vertical thrust load maintainer load is adjusted, and the horizontal pull size and vertically the thrust size method of adjustment all with draw the method for adjustment that adopts when cutting strength test identical.
Simultaneously, it should be noted, carry out in the step 2021 before the horizontal pull loading, should guarantee that the test specimen 1 that level clamps between mould 1 and the mould 23 is the new test block after changing, and material, structure and the size of the test specimen that clamps 1 are all identical with the test specimen 1 described in the step 1.
Step 2022, repeatedly repeat vertical thrust and load: the horizontal pull F described in the step 2021
LevelIn the loading procedure, according to predefined loading frequency, adopt described vertical thrust load maintainer and test specimen is repeated to apply vertical thrust more than 1 time from top to bottom by mould 23, until shear failure occurs test specimen 1; At this moment, the vertical thrust that repeatedly repeats to apply is F
NAnd F
N＜F
Max, F wherein
MaxFor test block described in the step 2,012 1 is loading horizontal pull F
LevelThe time maximum vertical thrust that can bear; The number of times that the shear failure that occurs test specimen 1 repeats to apply vertical thrust is N, and N is that test specimen 1 is at horizontal pull F
LevelVertical thrust F in the loading procedure
NDrawing during synchronous repeated load cut fatigue lifetime.
In the present embodiment, repeatedly repeat to apply in the vertical thrust process, the vertical thrust loading number of times that adopts 8 pairs of described vertical thrust load maintainers of counter to be applied on the test specimen 1 is added up automatically, and with automatic statistics synchronous driving to data processor 9, and when shear failure occurs test specimen 1, the number of times that counter 8 is added up is N for the number of times that shear failure repeats to apply vertical thrust occurs for test specimen 1 just, and wherein N is that test specimen 1 is at horizontal pull F
LevelVertical thrust F in the loading procedure
NDrawing during synchronous repeated load cut fatigue lifetime.
In the present embodiment, in the step 2 test specimen 1 is drawn when cutting strength test, need according to step 2011 to the described method of step 2013, test specimen 1 repeatedly drawn cut strength test, and repeatedly draw and cut in the strength test process, the horizontal pull value F that adopts described horizontal pull load maintainer that test specimen 1 is continuously applied
LevelAll not identical.
Repeatedly draw and cut after strength test finishes, corresponding acquisition test specimen 1 is loading a plurality of varying level tensile stress sigma
hThe time draw and cut intensity σ
cAfterwards, loading a plurality of varying level tensile stress sigma according to test specimen 1
hThe time draw and cut intensity σ
c, just can simulate drawing of test specimen 1 and cut intensity σ
cWith the horizontal tensile stress sigma of load
hThe curve that changes.
Repeatedly draw and cut in the strength test process, draw each time and cut before the strength test, all need the test specimen 1 that level is clipped between mould 1 and the mould 23 is changed.
In the present embodiment, test specimen 1 is repeatedly drawn when cutting strength test, draw and cut the strength test number of times and be no less than 2 times, and draw that to cut the strength test number of times more, intensity σ is cut in drawing of the test specimen 1 that simulates
cWith the horizontal tensile stress sigma of load
hThe curve that changes is more accurate.
During actual carrying out curve fitting, test specimen 1 can loaded a plurality of varying level tensile stress sigma
hThe time draw and cut intensity σ
c, in a two dimensional surface rectangular coordinate system, carry out described point respectively, afterwards a plurality of points of retouching are connected into curve.In the described two dimensional surface rectangular coordinate system, the x axle is horizontal tensile stress sigma
h, and the y axle is that test specimen 1 is in the horizontal tensile stress sigma of loading
hThe time draw and cut intensity σ
c
In the present embodiment, drawing of test specimen 1 cut intensity σ
cWith loading horizontal pull F
LevelWhen the curve that changes carries out match, carry out match according to least square method or other conventional line fitting method of routine, and the corresponding straight line that to simulate an equation be y=ax+b, and straight line y=ax+b is that drawing of test specimen 1 cut intensity σ
cWith the horizontal tensile stress sigma of load
hThe straight line that changes, wherein x is horizontal tensile stress sigma
h, and y is that test specimen 1 is in the horizontal tensile stress sigma of loading
hThe time draw and cut intensity σ
c
In the present embodiment, in the step 2 test specimen 1 is being loaded horizontal pull F
LevelThe time draw and cut when testing fatigue lifetime, need according to step 2021 to the method described in the step 2022, test specimen 1 is repeatedly drawn cuts test fatigue lifetime.Repeatedly draw and cut in test process fatigue lifetime, the horizontal pull value F that adopts described horizontal pull load maintainer that test specimen 1 is continuously applied
LevelAll identical.And repeatedly draw and cut in test process fatigue lifetime, the vertical thrust F that adopts described vertical thrust load maintainer that test specimen 1 is applied
NAll not identical.Repeatedly draw and cut after fatigue lifetime test finishes, corresponding acquisition test specimen 1 is at horizontal pull F
LevelThe vertical thrust F of a plurality of differences in the loading procedure
NDrawing during synchronous repeated load cut fatigue lifetime.Afterwards, according to test specimen 1 at horizontal pull F
LevelThe vertical thrust F of a plurality of differences in the loading procedure
NDrawing during synchronous repeated load cut fatigue lifetime, just can simulate test specimen 1 and load horizontal pull F
LevelThe time the curve of fatigue, the described curve of fatigue is that drawing of test specimen 1 cut fatigue lifetime N with vertical thrust F
NThe curve that changes.
The described curve of fatigue is that material bears alterante stress and the relation curve between fracture circulating cycle time, and it (is that test specimen 1 is at horizontal pull F take horizontal ordinate as fracture circulation cycle
LevelVertical thrust F in the loading procedure
NSynchronously drawing during repeated load cut N fatigue lifetime) and ordinate be ultimate stress (the vertical thrust F of repeated load repeatedly
N) plot curve, then be called the curve of fatigue of material, or claim the S-N curve.
In the present embodiment, before the actual test, can input first test specimen vertical displacement higher limit by the parameter input unit one of joining with data processor 9.Simultaneously, before the actual test, also can apply horizontal pull value F by the described horizontal pull load maintainer of described parameter input unit two inputs
LevelApply vertical thrust magnitude F with described vertical thrust load maintainer
Vertically, data processor 9 is according to the vertical thrust magnitude F that inputs
Vertically, electric vibrating hammer or electric piston 11 are controlled.
Actual drawing cut intensity and cut in the testing fatigue process with drawing, in real time the displacements of test specimen 1 in the vertical direction are detected in real time by the vertical displacement sensor 5 that joins with data processor 9, and the displacement detecting data are uploaded to data processor 9 synchronously, the displacement data of 9 pairs of receptions of data processor carries out analyzing and processing, when judgement draws vertical displacement sensor 5 displacement data that detects and reaches test specimen vertical displacement higher limit, illustrate that shear failure occurs test specimen 1, thereby need not artificially in real time the stress of test specimen 1 to be observed, by the difference comparative result between vertical displacement sensor 5 displacement data that detects and the test specimen vertical displacement higher limit, data processor 9 can automatically draw test specimen 1 whether shear failure occurs.
Simultaneously, actual drawing cut intensity and cut in the testing fatigue process with drawing, and by the display unit that joins with data processor 9 displacement data that vertical displacement sensor 5 detects carried out simultaneous display.
In the present embodiment, draw in the step 2013 and cut after strength test finishes, data processor 9 is according to formula
Automatically extrapolate test specimen 1 in the horizontal tensile stress sigma of loading
hThe time draw and cut intensity σ
c, and by described display unit to the test specimen 1 extrapolated in the horizontal tensile stress sigma of loading
hThe time draw and cut intensity σ
cCarry out simultaneous display.Meanwhile, data processor 9 is loading horizontal tensile stress sigma with test specimen 1
hThe time drawing and cut intensity σ at ordinary times
c, stores synchronized is to the data storage cell that joins with data processor 9.
During actual test, cut after strength test finishes when repeatedly drawing, data processor 9 respective handling draw test specimen 1 and are loading a plurality of varying level tensile stress sigma
hThe time draw and cut intensity σ
c, and respective synchronization is stored in the described data storage cell; Afterwards, 9 pairs of test specimens 1 of described data processor are loading a plurality of varying level tensile stress sigma
hThe time draw and cut intensity σ
cCarry out analyzing and processing, and to simulate straight line y=ax+b(be equation
), and stores synchronized is to described data storage cell.Afterwards, the ground surface material of making test specimen 1 is drawn when cutting strength test, according to formula
Can directly draw this ground surface material and load arbitrary horizontal tensile stress sigma
hThe time draw and cut intensity.
In the present embodiment, after repeatedly repeating vertical thrust loading and test specimen 1 generation shear failure in the step 2022, the repeated load times N stores synchronized of the vertical thrust that described data processor 9 is added up counter 8 is to data storage cell, and the times N of storing is that test specimen 1 is at horizontal pull F
LevelVertical thrust F in the loading procedure
NDrawing during synchronous repeated load cut fatigue lifetime.Actual drawing cut in the testing fatigue process, by described display unit to horizontal pull value F
Level, repeated load vertical thrust magnitude F
NThe repeated load times N of the vertical thrust that sum counter 8 is added up is carried out simultaneous display.
During actual test, cut after test fatigue lifetime finishes when repeatedly drawing, data processor 9 corresponding acquisition test specimens 1 are at horizontal pull F
LevelThe vertical thrust F of a plurality of differences in the loading procedure
NDrawing during synchronous repeated load cut fatigue lifetime, and respective synchronization is stored in the described data storage cell; Afterwards, 9 pairs of test specimens 1 of data processor are at horizontal pull F
LevelThe vertical thrust F of a plurality of differences in the loading procedure
NDrawing during synchronous repeated load cut fatigue lifetime and carried out analyzing and processing, and simulates described test specimen 1 at loading horizontal pull F
LevelThe time the curve of fatigue, and stores synchronized is to the described data storage cell.Afterwards, the ground surface material of making test specimen 1 is drawn when cutting testing fatigue, according to the curve of fatigue of storing, can directly draw this ground surface material at horizontal pull F
LevelArbitrary vertical thrust F in the loading procedure
NDrawing during synchronous repeated load cut fatigue lifetime.
To sum up, ground surface material that the present invention adopts draws to be cut intensity and draws the load mode of cutting fatigue test device to have following two kinds: directly draw and cut load and directly draw and cut fatigue (being CYCLIC LOADING) load.
In the actual test process, when drawing of need test test specimen 1 cut intensity, adopt directly to draw and cut the load load mode.Specific as follows: after counterweight 10-4 put into scale pan 10-2 and realize that horizontal force loads, from the bottom to top test specimen 1 is applied once vertical thrust by data processor 9 control electric piston 11 again, displacement by 5 pairs of test specimen 1 in the vertical directions of vertical displacement sensor in the vertical thrust loading process detects, and institute detected the displacement data synchronous driving to data processor 9,9 pairs of vertical displacement sensor 5 displacement datas that detect of data processor carry out analyzing and processing, when data processor 9 judges that when drawing vertical displacement sensor 5 displacement data that detects greater than the vertical displacement higher limit that sets, it (is F that data processor 9 records the current vertical thrust magnitude that loads automatically
Max), and according to formula
Automatically extrapolate test specimen 1 in the horizontal tensile stress sigma of loading
hThe time draw and cut intensity σ
c
When directly drawing of need test test specimen 1 cut fatigue lifetime, adopt directly to draw and cut fatigue (being CYCLIC LOADING) load load mode.Specific as follows: as after counterweight 10-4 put into scale pan 10-2 and realize that horizontal force loads, from the bottom to top test specimen 1 to be applied repeatedly vertical thrust (namely repeatedly CYCLIC LOADING) until test specimen 1 fatigure failure by data processor 9 control electric piston 11 again; Repeatedly in the vertical thrust loading process, displacement by 5 pairs of test specimen 1 in the vertical directions of vertical displacement sensor detects in real time, and institute detected the displacement data synchronous driving to data processor 9,9 pairs of vertical displacement sensor 5 displacement datas that detect of data processor carry out analyzing and processing, meanwhile 8 pairs of described vertical thrust load maintainers of counter be applied to that vertical thrust on the test specimen 1 loads that number of times is added up automatically and with the statistics synchronous driving to data processor 9, judge when data processor 9 and then to control electric piston 11 and to stop loading when drawing vertical displacement sensor 5 displacement data that detects greater than the vertical displacement higher limit that sets; Meanwhile, described data processor 9 automatic recording counter 8 current CYCLIC LOADING times N of adding up.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every any simple modification, change and equivalent structure of above embodiment being done according to the utility model technical spirit changes, and all still belongs in the protection domain of technical solutions of the utility model.
Claims (10)
1. the ground surface material based on the strip test specimen draws and cuts intensity and draw and cut fatigue test device, it is characterized in that: comprise test specimen (1) is carried out the testing mould of clamping, test specimen (1) is continuously applied in the horizontal pull load maintainer, horizontal pull loading procedure of horizontal pull synchronously test specimen (1) is applied in the vertical thrust load maintainer of vertical thrust and the vertical thrust loading process test specimen (1) the displacement detecting unit that detects in real time that is subjected to displacement; Described testing mould comprise two respectively fixing sleeve be loaded on the test specimen clamping die of test specimen (1) outside, the left and right sides, and before described horizontal pull loaded with vertical thrust, described test specimen (1) level was clipped between mould one (2) and the mould two (3); Two described test specimen clamping dies are respectively the mould two (3) that only can carry out in the horizontal direction the mould one (2) of move left and right and only can in the vertical direction move up and down, described mould one (2) outside is equipped with in the vertical direction mould one (2) is carried out spacing vertical limit device, and mould two (3) the upper outsides are equipped with in the horizontal direction carries out spacing level to stop means to mould two (3), and described mould two (3) vertically hangs on the motionless object (19) by spring (4); Described horizontal pull load maintainer is laid in mould one (2) outside, and it is for being continuously applied the load maintainer of horizontal pull to test specimen (1) by mould one (2); Described vertical thrust load maintainer is positioned at mould two (3) belows, and its load maintainer for from the bottom to top test specimen (1) being applied once vertical thrust or repeatedly repeats to apply vertical thrust by mould two (3);
Described test specimen (1) is the strip test specimen, the structure of described mould one (2) and mould two (3) is all identical with size, and the two is the cube mold that inside has test specimen clamping chamber, the structure in described test specimen clamping chamber and size all with the structure of test specimen (1) end and measure-alike, described test specimen clamping chamber is rectangular cavity.
2. draw according to the ground surface material based on the strip test specimen claimed in claim 1 and cut intensity and draw and cut fatigue test device, it is characterized in that: the xsect of described strip test specimen is square.
3. draw according to claim 1 or 2 described ground surface materials based on the strip test specimen and cut intensity and draw and cut fatigue test device, it is characterized in that: described horizontal pull load maintainer is included in the mass that under the self gravitation effect test specimen (1) is applied horizontal pull, described mass is carried out the lifting rope (10-1) of lifting and is laid in the deflection sheave (10-3) in mould one (2) outside, one end of described lifting rope (10-1) is fixed on the lateral wall of mould one (2), and the other end of lifting rope (10-1) is fixed on the described mass after walking around deflection sheave (10-3), lifting rope (10-1) between described mould one (2) and the deflection sheave (10-3) is level to laying, and the lifting rope (10-1) between deflection sheave (10-3) and the described mass is vertically to laying.
4. draw according to claim 1 or 2 described ground surface materials based on the strip test specimen and cut intensity and draw and cut fatigue test device, it is characterized in that: described displacement detecting unit comprises the vertical displacement sensor (5) that the displacement to test specimen (1) in the vertical direction detects in real time, and described vertical displacement sensor (5) is laid on the mould two (3).
5. draw according to the ground surface material based on the strip test specimen claimed in claim 4 and cut intensity and draw and cut fatigue test device, it is characterized in that: also comprise the parameter input unit one for input test specimen vertical displacement higher limit, vertical displacement sensor (5) displacement information that detects is carried out the data processor (9) of analyzing and processing and repeatedly repeats to apply the vertical thrust that in the vertical thrust process described vertical thrust load maintainer is applied on the test specimen (1) loading the counter (8) that number of times is added up automatically, described parameter input unit one, counter (8) and vertical displacement sensor (5) all join with data processor (9).
6. draw according to the ground surface material based on the strip test specimen claimed in claim 5 and cut intensity and draw and cut fatigue test device, it is characterized in that: also comprise be used to inputting described horizontal pull load maintainer applying horizontal pull value F
LevelApply vertical thrust magnitude F with described vertical thrust load maintainer
VerticallyParameter input unit two, described parameter input unit two is joined with data processor (9); Described vertical thrust load maintainer is electric vibrating hammer or electric piston (11); Described electric vibrating hammer and electric piston (11) are controlled by described data processor (9), and the two all joins with data processor (9).
7. draw according to claim 1 or 2 described ground surface materials based on the strip test specimen and cut intensity and draw and cut fatigue test device, it is characterized in that: described vertical limit device comprises that twice are the horizontal concrete chute of parallel laying (15), described mould one (2) is installed between the described horizontal concrete chute of twice (15), and mould one (2) can move horizontally along the described horizontal concrete chute of twice (15); Described level comprises that to stop means twice are the vertical slideway (16) of parallel laying, and described mould two (3) is installed between the described vertical slideways of twice (16), and mould two (3) can move up and down along the described vertical slideways of twice (16).
8. draw according to the ground surface material based on the strip test specimen claimed in claim 3 and cut intensity and draw and cut fatigue test device, it is characterized in that: described mass comprises that colligation is fixed on the scale pan (10-2) on the lifting rope (10-1) and is positioned over counterweight (10-4) in the scale pan (10-2).
9. draw according to the ground surface material based on the strip test specimen claimed in claim 4 and cut intensity and draw and cut fatigue test device, it is characterized in that: described vertical thrust load maintainer is vibration hammer or piston; Described displacement detecting unit also comprises the horizontal displacement sensors (6) that displacement in the horizontal direction detects in real time to test specimen (1), and it is upper or be laid in gap between mould one (2) and the mould two (3) that described horizontal displacement sensors (6) is laid in mould one (2).
10. draw according to claim 1 or 2 described ground surface materials based on the strip test specimen and cut intensity and draw and cut fatigue test device, it is characterized in that: described test specimen (1) is fixed in the described test specimen clamping chamber by glue is fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429216 CN202793922U (en) | 2012-08-27 | 2012-08-27 | Pavement material shearing intensity and shearing fatigue tester based on strip-type test piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429216 CN202793922U (en) | 2012-08-27 | 2012-08-27 | Pavement material shearing intensity and shearing fatigue tester based on strip-type test piece |
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|---|---|
| CN202793922U true CN202793922U (en) | 2013-03-13 |
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|---|---|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830016A (en) * | 2012-08-27 | 2012-12-19 | 西安科技大学 | Testing method of shear strength and shear fatigue of pavement material and testing device of such method |
| CN103278405A (en) * | 2013-06-04 | 2013-09-04 | 苏州大学 | Fatigue test system |
| CN104777095A (en) * | 2015-04-09 | 2015-07-15 | 长安大学 | Equipment and method for testing bonding fatigue performance of pavement crack filling material |
| CN105928811A (en) * | 2016-07-14 | 2016-09-07 | 山西省交通科学研究院 | Asphalt mixture fatigue resistance testing apparatus |
| CN106872291A (en) * | 2017-03-03 | 2017-06-20 | 浙江大学 | Masonry cuts pressure device and masonry cuts pressure composite testing method |
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2012
- 2012-08-27 CN CN 201220429216 patent/CN202793922U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830016A (en) * | 2012-08-27 | 2012-12-19 | 西安科技大学 | Testing method of shear strength and shear fatigue of pavement material and testing device of such method |
| CN102830016B (en) * | 2012-08-27 | 2014-10-08 | 西安科技大学 | Testing method of shear strength and shear fatigue of pavement material and testing device of such method |
| CN103278405A (en) * | 2013-06-04 | 2013-09-04 | 苏州大学 | Fatigue test system |
| CN104777095A (en) * | 2015-04-09 | 2015-07-15 | 长安大学 | Equipment and method for testing bonding fatigue performance of pavement crack filling material |
| CN105928811A (en) * | 2016-07-14 | 2016-09-07 | 山西省交通科学研究院 | Asphalt mixture fatigue resistance testing apparatus |
| CN105928811B (en) * | 2016-07-14 | 2018-09-14 | 山西省交通科学研究院 | Asphalt Mixtures Fatigue Properties test device |
| CN106872291A (en) * | 2017-03-03 | 2017-06-20 | 浙江大学 | Masonry cuts pressure device and masonry cuts pressure composite testing method |
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