CN102564845A - Bidirectional variation mechanical property testing instrument for contact surface between earth and structure - Google Patents

Bidirectional variation mechanical property testing instrument for contact surface between earth and structure Download PDF

Info

Publication number
CN102564845A
CN102564845A CN2012100069506A CN201210006950A CN102564845A CN 102564845 A CN102564845 A CN 102564845A CN 2012100069506 A CN2012100069506 A CN 2012100069506A CN 201210006950 A CN201210006950 A CN 201210006950A CN 102564845 A CN102564845 A CN 102564845A
Authority
CN
China
Prior art keywords
stress
soil
displacement transducer
container box
loader
Prior art date
Application number
CN2012100069506A
Other languages
Chinese (zh)
Other versions
CN102564845B (en
Inventor
杨贵
刘汉龙
丁选明
蒋尧
刘彦辰
Original Assignee
河海大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 河海大学 filed Critical 河海大学
Priority to CN 201210006950 priority Critical patent/CN102564845B/en
Publication of CN102564845A publication Critical patent/CN102564845A/en
Application granted granted Critical
Publication of CN102564845B publication Critical patent/CN102564845B/en

Links

Abstract

The invention discloses a testing instrument and a testing method for the dynamic property of a contact surface between an earth body and a structure under the effect of bidirectional vibration shear. The testing instrument structurally and mainly comprises a model bottom plate Y-direction stress loader, an X-direction stress loader, an X-direction displacement sensor, a Y-direction displacement sensor, a Z-direction stress loader, a Z-direction displacement sensor, a Z-direction pressure plate, square stacking rings and an earth containing box. The testing method comprises the steps such as installation of testing materials, installation of horizontal displacement and vertical displacement sensors, vertical stress loading and horizontal dynamic stress loading. The testing instrument and the testing method have the advantages that the structure is simple, the power transmission is reliable, the power loads which are randomly combined in the horizontal direction can be applied, the dynamic displacement of the earth body in the horizontal direction can be conveniently measured and the measurement accuracy is high.

Description

A kind of soil and works contact face mechanical direction vibration mechanical property testing instrument
Technical field
The invention belongs to building hydraulic engineering technical field, particularly a kind of soil and works contact face mechanical property testing tool and method.
Background technology
Earth and rockfill dam is as the main flow dam type in the present world, and its inner structure exists impervious core and filter material, dam body and bank slope and surface of contact problems such as basement rock, concrete slab and bed course, dam foundation overlayer and cut-pff wall.Because the difference of contact interface two layers of material characteristic; Bigger shear stress and the displacement non-continuous event of the normal existence in both sides, interface; Thereby cause comparatively complicated stress and distortion proterties, also make when these positions receive destruction such as earthquake at dam body, become the weak link that is prone to have an accident.Therefore, the mechanical characteristic such as distortion, intensity development law, failure mode of correctly describing all kinds of surface of contact in the earth and rockfill dam becomes the hot subject of earth and rockfill dam earthquake research.
Instrument about the quiet kinematic behavior research of surface of contact mainly contains at present: direct shear apparatus, simple shear apparatus, torsion shear apparatus, dynamic triaxial apparatus and resonance column device etc.Before the present invention; Chinese patent (patent No.: the ZL02131066.1 and the patent No.: ZL200920047263) the disclosed instrument that is used to test contact face mechanical character; Owing to stipulated that shear surface position or shearing ring thickness are thicker; The real shear breakage of soil body position in the process of the test can't be obtained, unidirectional shear load can only be applied in the process of the test; Chinese patent (the patent No.: ZL200610165244.0) disclosed large 3 D multifunction soil tester; In applying horizontal bidirectional shear load process; The structure more complicated, under combination in any dynamic stress load action, level displacement transducer and loaded ring in moving displacement measurement process are sliding friction; In reciprocal multidirectional motion process, can cause error bigger.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, a kind of soil and works surface of contact direction vibration mechanical property testing instrument and method of application are provided.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of soil and works contact face mechanical direction vibration mechanical property testing instrument is characterized in that: its structure is made up of to the motion guide groove to motion guide groove and Y to pressure plare, square folded ring, soil container box, X to displacement transducer, Z to stress loader, Z to displacement transducer, Z to stress loader, Y to displacement transducer, Y to stress loader, X pattern board, X.The soil container box is supported and fixed on the pattern board through rolling, through X and Y to the stress loader realize that combination in any load action contact face mechanical property down tests.
Said square folded ring both sides all have semi-circular recesses, and when the soil container box received the combination in any load action, X and Y accurately measured moving displacement to displacement transducer portion's rolling within it; The undersized of square folded ring is in the size of soil container box.
Said X and Y adopt the roller bearing design to the displacement transducer top, increase an annulus at the sensor top of routine, and it can be rolled in semi-circular recesses.
Said soil container box both sides have X and Y to the motion positions groove, thereby realize X and Y container ability free movement when applying dynamic load simultaneously.
Said pattern board is provided with disk shaped recess in the position under the soil container box, disk diameter is less than soil container box width, and steel ball is placed by portion within it, replaces conventional sliding friction with rolling friction, reduces frictional resistance.
 
The invention still further relates to a kind of soil and works surface of contact direction vibration mechanical property testing instrument method of application, comprise following technical step:
(1) mounting structure thing in the soil container box.
(2) discharge square folded ring in order, place on the soil container box, soil sample is inserted in layering.
(3) on square folded ring, place Z to pressure plare, through fixed support install Z to displacement transducer, connect Z to the stress loader;
(4) pass through fixed support installation X and Y to displacement transducer;
(5) connect X and Y to the stress loader;
(6) apply Z to stress through Z to the stress loader according to testing requirements.
(7), apply the dynamic stress of combination in any to the stress loader through X and Y according to testing requirements; Be provided with disk shaped recess under the soil box, steel ball is placed by portion within it, replaces conventional sliding friction with rolling friction, reduces frictional resistance, and motion is not respectively disturbed mutually under X and guide Y Cao's guiding, thereby realizes the motion combination of any direction.
(8) X and Y to displacement transducer because of pulley being housed on the sensor top, therefore under the effect of combination in any external force mainly to stretch, to contract motion, lateral sliding moves the influence of sensor is subdued through pulley.
The invention has the advantages that:
(1) can apply the dynamic stress of horizontal direction combination in any easily through the gathering sill of soil container box both sides.
(2), can measure the folded moving displacement of level that encircles under the motion conditions in any direction easily through the U-shaped groove of folded ring both sides.
(3) can measure the cubic deformation rule of sample under the cyclic load effect through the vertical displacement sensor;
(4) shearing ring thinner thickness can accurately be measured the Changing Pattern of soil body surface of contact annex shearing strain under dynamic load function;
(5), can measure the detrusion rule at surface of contact place under surface of contact thickness, the cyclic load, along the detrusion rule of specimen height etc. through diverse location placement sensor in the horizontal direction.
Advantage of the present invention and effect will further describe in embodiment.
 
Description of drawings
Fig. 1 structural front view of the present invention;
A position profile figure among Fig. 2 Fig. 1;
B position enlarged drawing among Fig. 3 Fig. 1;
C position enlarged drawing among Fig. 4 Fig. 1;
D position enlarged drawing among Fig. 5 Fig. 1;
Among the figure: (1) pattern board, (2) Y are to the stress loader, and (3) X is to the stress loader, and (4) X is to displacement transducer; (5) Y is to displacement transducer, and (6) Z is to the stress loader, and (7) Z is to displacement transducer, and (8) Z is to pressure plare; (9) square folded ring, (10) soil container box, (11) X are to the motion guide groove, and (12) Y is to the motion guide groove; (13) annular groove, (14) X or Y be to the stress load bar, (15) semicircle groove, (16) rolling disk.
 
Embodiment
Shown in Fig. 1 ~ 5; A kind of soil and works contact face mechanical direction vibration mechanical property testing instrument, its structure is made up of to motion guide groove (12) to motion guide groove (11) and Y to pressure plare (8), square folded ring (9), soil container box (10), X to displacement transducer (7), Z to stress loader (6), Z to displacement transducer (5), Z to displacement transducer (4), Y to stress loader (3), X to stress loader (2), X pattern board (1), Y.It is characterized in that soil container box (10) is supported and fixed on the pattern board through rolling, through X and Y to stress loader (3) and (2) realize that combination in any load action contact face mechanical property down tests.
This test unit can be tested the soil body and the mutual surface of contact kinematic behavior of works, also can test the surface of contact kinematic behavior between the soil body and the soil body.In process of the test, for the soil body and works surface of contact kinematic behavior, installing structure thing in the shear box of bottom, for the soil body and soil body surface of contact kinematic behavior, comparatively hard, the closely knit soil body is sheared and settled in the bottom.
Pattern board (1) is a steel plate, and length and width and height are respectively 40cm, 40cm and 3cm; Model middle part disk groove diameter is 20cm, degree of depth 0.9cm (as shown in Figure 2).The steel ball size that adopts in the test is 1cm.
Soil container box (10) is for to be welded by steel plate, and the thickness of steel plate is 0.5cm, and the external dimensions length and width of soil container box (10) and height are respectively 25,25 and 10cm; The horizontal guide slot of both sides (11) and (12) width external width are 1cm, and inner width is 2cm, and the degree of depth is 0.5cm; X and Y link through slide block and soil container box to stress loader (3) and (2), and be as shown in Figure 3.Have semi-circular recesses on container top, the width and the degree of depth are 0.5cm.
Square folded ring (9), external dimensions, length and width and height are respectively 21cm, 21cm and 1cm; Inside dimension, length and width and height are respectively 20cm, 20cm and 1cm; The width and the degree of depth of semi-circular recesses are 0.25cm, and be as shown in Figure 4.
X, the displacement transducer range of Y and Z direction is 5cm.The cylinder design is adopted in the displacement transducer termination of X and Y direction, and body diameter is 0.25cm, and is as shown in Figure 5.
X, the range of the stress loader of Y and Z direction is 50kN, and the maximum load frequency is 10Hz.
 
A kind of soil and works surface of contact direction vibration mechanical property testing instrument test method comprise following technical step:
(1) mounting structure thing in soil container box (10).
(2) discharge square folded ring (9) in order, place on the soil container box (10), soil sample is inserted in layering.
(3) square folded ring (9) go up to place Z to pressure plare (8), through fixed support install Z to displacement transducer (7), connect Z to the stress loader;
(4) pass through fixed support installation X and Y to displacement transducer (4) and (5);
(5) connect X and Y to stress loader (3) and (2);
(6) apply Z to stress through Z to stress loader (6) according to testing requirements.
(7), apply the dynamic stress of combination in any to stress loader (3) and (2) through X and Y according to testing requirements; Be provided with disk shaped recess under the soil box, steel ball is placed by portion within it, replaces conventional sliding friction with rolling friction, reduces frictional resistance, and motion is not respectively disturbed mutually under X and guide Y Cao's guiding, thereby realizes the motion combination of any direction.
(8) X and Y to displacement transducer (4) and (5) because of pulley being housed on the sensor top, therefore under the effect of combination in any external force mainly to stretch, to contract motion, lateral sliding moves the influence of sensor is subdued through pulley

Claims (2)

1. soil and works contact face mechanical direction vibration mechanical property testing instrument; Comprise: X to stress loader, Y to stress loader, Z to stress loader, Z to displacement transducer, Z to pressure plare; It is characterized in that: pattern board, X to displacement transducer, Y to displacement transducer, square folded ring, soil container box, through X and Y to the stress loader realize that combination in any load action contact face mechanical property down tests; Said pattern board (1) is provided with disk shaped recess in the position under the soil container box, disk diameter is less than soil container box width, and steel ball is placed by portion within it, replaces conventional sliding friction with rolling friction, reduces frictional resistance; Said soil container box both sides have X and Y to motion positions groove (11) and (12), thereby realize X and Y container ability free movement when applying dynamic load simultaneously; Said square folded ring both sides all have semi-circular recesses, its purpose be when the soil container box any combined load effect X of following time and Y to displacement transducer within it portion roll, accurately measure and move displacement; The undersized of square folded ring is in the size of soil container box; Said X and Y adopt the roller bearing design to the displacement transducer top, increase an annulus at the sensor top of routine, and it can be rolled in semi-circular recesses.
2. a kind of soil according to claim 1 and works surface of contact direction vibration mechanical property testing instrument test method comprise following technical step:
(1) mounting structure thing in soil container box (10);
(2) discharge square folded ring (9) in order, place on the soil container box (10), soil sample is inserted in layering;
(3) square folded ring (9) go up to place Z to pressure plare (8), through fixed support install Z to displacement transducer (7), connect Z to the stress loader;
(4) pass through fixed support installation X and Y to displacement transducer (4) and (5);
(5) connect X and Y to stress loader (3) and (2);
(6) apply Z to stress through Z to stress loader (6) according to testing requirements;
(7) apply according to testing requirements, apply the dynamic stress of combination in any through X and Y to stress loader (3) and (2).
CN 201210006950 2012-01-11 2012-01-11 Bidirectional variation mechanical property testing instrument for contact surface between earth and structure CN102564845B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201210006950 CN102564845B (en) 2012-01-11 2012-01-11 Bidirectional variation mechanical property testing instrument for contact surface between earth and structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201210006950 CN102564845B (en) 2012-01-11 2012-01-11 Bidirectional variation mechanical property testing instrument for contact surface between earth and structure

Publications (2)

Publication Number Publication Date
CN102564845A true CN102564845A (en) 2012-07-11
CN102564845B CN102564845B (en) 2013-09-25

Family

ID=46410850

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201210006950 CN102564845B (en) 2012-01-11 2012-01-11 Bidirectional variation mechanical property testing instrument for contact surface between earth and structure

Country Status (1)

Country Link
CN (1) CN102564845B (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102914475A (en) * 2012-10-17 2013-02-06 中国矿业大学 Shear test device for observing mechanical property of interface between underwater soil and structure
CN103808573A (en) * 2014-02-14 2014-05-21 湖州职业技术学院 Large-size high-precision simple shear apparatus structure
CN103884305A (en) * 2012-12-20 2014-06-25 核工业西南物理研究院 Measuring method for effectively reducing large structural component displacement error
CN104034607A (en) * 2014-06-04 2014-09-10 同济大学 Large-sized multifunctional geosynthetic material interface power direct shear apparatus
CN104062175A (en) * 2014-06-25 2014-09-24 成都东华卓越科技有限公司 Guiding-antirotation-antifriction device for shearing box
CN105203408A (en) * 2015-09-15 2015-12-30 湖南工业大学 Shear box for large cycled single shear test
CN105606466A (en) * 2016-03-11 2016-05-25 大连理工大学 Multifunctional shear box for similar material structural surface direct shear test
CN105738196A (en) * 2016-04-08 2016-07-06 中铁西北科学研究院有限公司 Vertically-loaded multilayer shear model box
CN105842086A (en) * 2016-06-08 2016-08-10 长江水利委员会长江科学院 Low-friction laminar ring type bidirectional dynamic shear testing machine
CN104749055B (en) * 2015-01-22 2017-10-27 同济大学 Realize the experimental rig of vertical circulation compression side rocking shearing power loading
CN108181171A (en) * 2017-12-29 2018-06-19 河海大学 A kind of intelligent test device and its application method for soil body water stability
CN109765106A (en) * 2019-01-08 2019-05-17 上海航天精密机械研究所 Three-dimensional loading system and method applied to cylindrical product
CN109839316A (en) * 2019-03-12 2019-06-04 温州大学 A kind of complicated stress environment simple shear apparatus for considering temperature and influencing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101603903A (en) * 2009-07-07 2009-12-16 河海大学 Stacked ring type boxshear apparatus and to the method for testing composite liner material
CN101846606A (en) * 2010-05-27 2010-09-29 中国科学院武汉岩土力学研究所 Earth-structure interaction contact surface shearing test visualization device
CN102269676A (en) * 2011-05-12 2011-12-07 河海大学 High-precision geotechnical simple shear apparatus and use method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101603903A (en) * 2009-07-07 2009-12-16 河海大学 Stacked ring type boxshear apparatus and to the method for testing composite liner material
CN101846606A (en) * 2010-05-27 2010-09-29 中国科学院武汉岩土力学研究所 Earth-structure interaction contact surface shearing test visualization device
CN102269676A (en) * 2011-05-12 2011-12-07 河海大学 High-precision geotechnical simple shear apparatus and use method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
袁运涛等: "土与结构界面位移特性静动力单剪试验研究", 《岩土力学》 *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102914475A (en) * 2012-10-17 2013-02-06 中国矿业大学 Shear test device for observing mechanical property of interface between underwater soil and structure
CN102914475B (en) * 2012-10-17 2014-12-31 中国矿业大学 Shear test device for observing mechanical property of interface between underwater soil and structure
CN103884305A (en) * 2012-12-20 2014-06-25 核工业西南物理研究院 Measuring method for effectively reducing large structural component displacement error
CN103884305B (en) * 2012-12-20 2017-11-28 核工业西南物理研究院 A kind of measuring method for effectively reducing large-sized structural parts displacement error
CN103808573A (en) * 2014-02-14 2014-05-21 湖州职业技术学院 Large-size high-precision simple shear apparatus structure
CN104034607B (en) * 2014-06-04 2016-04-06 同济大学 Large-sized multifunction geosynthetics interface motivation direct shear apparatus
CN104034607A (en) * 2014-06-04 2014-09-10 同济大学 Large-sized multifunctional geosynthetic material interface power direct shear apparatus
CN104062175A (en) * 2014-06-25 2014-09-24 成都东华卓越科技有限公司 Guiding-antirotation-antifriction device for shearing box
CN104749055B (en) * 2015-01-22 2017-10-27 同济大学 Realize the experimental rig of vertical circulation compression side rocking shearing power loading
CN105203408A (en) * 2015-09-15 2015-12-30 湖南工业大学 Shear box for large cycled single shear test
CN105606466A (en) * 2016-03-11 2016-05-25 大连理工大学 Multifunctional shear box for similar material structural surface direct shear test
CN105738196A (en) * 2016-04-08 2016-07-06 中铁西北科学研究院有限公司 Vertically-loaded multilayer shear model box
CN105842086A (en) * 2016-06-08 2016-08-10 长江水利委员会长江科学院 Low-friction laminar ring type bidirectional dynamic shear testing machine
CN105842086B (en) * 2016-06-08 2019-03-29 长江水利委员会长江科学院 A kind of two-way dynamic shear testing maschine of low frictional resistance stacked ring type
CN108181171A (en) * 2017-12-29 2018-06-19 河海大学 A kind of intelligent test device and its application method for soil body water stability
CN108181171B (en) * 2017-12-29 2020-10-30 河海大学 Intelligent testing device for soil body water stability and using method thereof
CN109765106A (en) * 2019-01-08 2019-05-17 上海航天精密机械研究所 Three-dimensional loading system and method applied to cylindrical product
CN109839316A (en) * 2019-03-12 2019-06-04 温州大学 A kind of complicated stress environment simple shear apparatus for considering temperature and influencing

Also Published As

Publication number Publication date
CN102564845B (en) 2013-09-25

Similar Documents

Publication Publication Date Title
Ng et al. Three-dimensional centrifuge modelling of the effects of twin tunnelling on an existing pile
CN104454010B (en) A kind of deep-well tunnel tunneling construction dynamic comprehensive monitor and early warning system and method for early warning
Ng et al. Three-dimensional centrifuge modelling of basement excavation effects on an existing tunnel in dry sand
Kuwano et al. On the applicability of cross-anisotropic elasticity to granular materials at very small strains
CN103969107B (en) High pressure servo moves true triaxial test machine
Su et al. Long-term structural performance monitoring system for the Shanghai Tower
KR101188004B1 (en) Loading Device For Pile Load Test
CN103953074B (en) A kind of open-end pipe pile hammering injection analogue experiment installation and experimental technique
El-Emam et al. Experimental design, instrumentation and interpretation of reinforced soil wall response using a shaking table
CN103018106B (en) A kind of can the experiment porch of control simulation piestic water loading and coal seam floor failure relation
CN102721604B (en) Method for physical simulation test of stability of deep tunnel surrounding rock
Brandenberg et al. Static pushover analyses of pile groups in liquefied and laterally spreading ground in centrifuge tests
Weisman et al. Stability of elastomeric and lead-rubber seismic isolation bearings
Mirmoradi et al. Numerical evaluation of the behavior of GRS walls with segmental block facing under working stress conditions
CN102589767B (en) Rock core internal stress field test instrument and use method thereof
CN102628767B (en) Device and method for testing mechanical properties of pile-soil contact surface
Yang et al. Study of soil layering effects on lateral loading behavior of piles
CN201843152U (en) Simulation tester for construction and monitoring of deep foundation pit engineering
McCabe et al. Behavior of axially loaded pile groups driven in clayey silt
Ng et al. Pile setup in cohesive soil. I: experimental investigation
Jalali et al. Experimental and finite element study of the reverse faulting effects on buried continuous steel gas pipelines
Yegian et al. Foundation isolation for seismic protection using a smooth synthetic liner
CN103234821B (en) Test apparatus and method for geotechnical engineering side slope multi-direction loading
CN100582732C (en) Large 3D multifunction soil tester
Hodder et al. 3D experiments investigating the interaction of a model SCR with the seabed

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant