CN202903619U - Shear test device for observing mechanical property of underwater soil and structural interface - Google Patents

Shear test device for observing mechanical property of underwater soil and structural interface Download PDF

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Publication number
CN202903619U
CN202903619U CN 201220533561 CN201220533561U CN202903619U CN 202903619 U CN202903619 U CN 202903619U CN 201220533561 CN201220533561 CN 201220533561 CN 201220533561 U CN201220533561 U CN 201220533561U CN 202903619 U CN202903619 U CN 202903619U
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CN
China
Prior art keywords
soil
test
box
horizontal
interface
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Expired - Fee Related
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CN 201220533561
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Chinese (zh)
Inventor
常虹
夏军武
向小芳
唐晓祥
郑培波
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Priority to CN 201220533561 priority Critical patent/CN202903619U/en
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Publication of CN202903619U publication Critical patent/CN202903619U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to mechanical property test equipment, and in particular relates to a shear test device for observing the mechanical property of underwater soil and structural interface for researching the mechanical property of the underwater soil and the structural interface in a hydraulic (building) structure. The device comprises a fixing mechanism, a horizontal motion mechanism, a soil material box and loading systems, wherein the device is taken as a main machine frame due to an electro-hydraulic servo movable-static universal testing machine. The designed soil material is put into the soil material body fixedly arranged on the horizontal motion mechanism, a structural test block is arranged on an upper clamp head of the electro-hydraulic servo movable-static universal testing machine, a normal stress is applied through a vertical loading system, and the normal stress and the shear mechanical behavior between the underwater soil and the structural interface under a complex stress way can be reappeared due to a horizontal loading system. A normal force and a shear force in an interface shear test are measured by a load sensor, the normal displacement of the interface in the test is measured by a vertical displacement meter distributed on the top surface of a structural sample, and the shear displacement in the test is measured by horizontal displacement meters distributed at two sides of the soil material box.

Description

The shearing test device of soil and structural interface mechanical characteristic under a kind of observation water
Technical field
The utility model relates to a kind of dynamic characteristic test equipment, is particularly useful for studying in the water conservancy project buildings or structures shearing test device of soil and structural interface mechanical characteristic under a kind of observation water of under water soil and the interface mechanics characteristic of structure.
Background technology
Present research to the soil-structure INTERACTION PROBLEMS, mainly be by soil-structure interface basic mechanical performance under the method research corresponding conditions of physical test, set up the constitutive model of description interface mechanics characteristic on the basis of test or existing model is carried out corresponding improvement.Therefore the test apparatus that adopts is just most important.Domestic and international many scholars are studied the test apparatus of soil-structure interface performance, and the instrument of at present widespread use comprises direct shear apparatus, simple shear apparatus two large classes.Because soil is of a great variety, the physical property complexity is various, and therefore soil also has very strong specific aim with the research of structural interaction.Such as people such as loud, high-pitched sounds in " Geotechnical Engineering journal " in March, 2003, the 25th volume, the 2nd phase, " large-scale soil and the structure interface circular loading shear apparatus " on the P149-153 studied the mechanical property of coarse-grained soil and structural interface.The people such as Zhou Guoqing are in " China Mining University's journal " March calendar year 2001, the 30th volume, the 2nd phase, the mechanical characteristic of the residual scissor test systematic study of the superelevation straightening deep soil-structure interface on the P118-121.For hydro-structure, its soil is under the immersion condition all the time with structural interface, and present test apparatus is difficult to the actual mechanical behavior of native under the simulative immersion condition and structural interface.Conventional interface shearing instrument specimen size is less, and can't realize the interface mechanics response under the complex stress path.These defectives have all limited the research of soil with hydro-structure interface mechanics characteristic.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art part, the shearing test device of native under a kind of observation water and structural interface being provided.This test unit, mainly is comprised of fixed mechanism, horizontal mobile mechanism, earth material box, loading system and measuring system as main machine frame by means of the electro-hydraulic servo static/dynamic universal testing machine.The earth material that designs packed into be fixed in the earth material box on the horizontal mobile mechanism, the structure test block is installed in the upper grip of electro-hydraulic servo static/dynamic universal testing machine, apply normal stress by vertical loading system, can reproduce the under water soil of well-established law under stress and the complex stress path and the shearing mechanical behavior of structural interface by horizontal loading system.Normal force and shearing force record by load transducer in the interface shearing test, the Normal Displacement of the vertical displacement instrumentation amount test median surface that structure sample end face is arranged, and the horizontal displacement meter that is arranged in earth material box both sides is measured the shear displacemant in the test.
The utility model is realized with following technical scheme: the shearing test device of soil and structural interface mechanical characteristic under a kind of observation water, this shearing test device comprises fixed mechanism, horizontal mobile mechanism, earth material box, loading system, it is characterized in that: whole test unit by means of the electro-hydraulic servo static/dynamic universal testing machine as main machine frame; To connect the base that joist steel is fixed in testing machine by bolt, on the described connection joist steel support baseboard be arranged, be welded with guide rail on the support baseboard; By roller with move horizontally the horizontal mobile mechanism that base plate forms and place on the guide rail; Described move horizontally to be bolted on the base plate comprise angle steel outside framework and the molecular earth material box of organic glass box; The structure test block is fixed on the upper grip of electro-hydraulic servo static/dynamic universal testing machine by connecting elements; Horizontal actuator is fixed on the support baseboard by support, by the horizontal loading sensor with move horizontally base plate and link together; Horizontal displacement sensors, vertical displacement sensor, horizontal loading sensor and PWS series electro-hydraulic servo static/dynamic universal testing machine are connected with data acquisition system (DAS) respectively.
Described moving horizontally on the molecular earth material box of base plate, angle steel outside framework and organic glass box all is equipped with horizontal displacement sensors.
Be equipped with the vertical displacement sensor in the described structure test block.
In the molecular earth material box of described angle steel outside framework and organic glass box earth material is arranged.
The utility model has the advantages that: this test unit, and all connects by high-strength bolt between the parts as main machine frame by means of the electro-hydraulic servo static/dynamic universal testing machine, is convenient to installation and removal, and the cost of setting up this pilot system is very low.Device can Simulated Water under the actual mechanical behavior of soil and structural interface, also can realize that other shear the function of instruments simultaneously, its cost is more much lower than conventional shearing instrument.The size maximum of the structure sample of device can reach 400 * 400mm, can make easily the structure sample of different size, with the impact of research specimen size on interface mechanical characteristic, can also study the mechanical property at the interface of well-established law under the stress, to realize the mechanical behavior at interface under the complex stress path.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in further detail:
Fig. 1 is the utility model structural representation;
Fig. 2 is the side view of Fig. 1;
Among the figure: 1, connect joist steel, 2, support baseboard, 3, guide rail, 4, roller, 5, move horizontally base plate, 6, horizontal displacement sensors, 7, angle steel outside framework, 8, the organic glass box, 9, the structure test block, 10, vertical displacement sensor, 11, electro-hydraulic servo static/dynamic universal testing machine, 12, connecting elements, 13, earth material, 14, horizontal loading sensor, 15, horizontal actuator.16, support.
Embodiment
As shown in the figure: the shearing test device of soil and structural interface mechanical characteristic under a kind of observation water, this shearing test device comprises fixed mechanism, horizontal mobile mechanism, earth material box, loading system, whole test unit by means of electro-hydraulic servo static/dynamic universal testing machine 11 as main machine frame; To connect the base that joist steel 1 is fixed in testing machine by bolt, on the described connection joist steel support baseboard 2 be arranged, be welded with guide rail 3 on the support baseboard; By roller 4 with move horizontally the horizontal mobile mechanism that base plate 5 forms and place on the guide rail 3; The described earth material box that is bolted on the base plate by comprising that angle steel outside framework 7 and organic glass box 8 form that moves horizontally; Structure test block 9 is fixed on the upper grip of electro-hydraulic servo static/dynamic universal testing machine by connecting elements 12; Horizontal actuator 15 is fixed on the support baseboard 2 by support 16, by horizontal loading sensor 14 with move horizontally base plate 5 and link together; Horizontal displacement sensors 6, vertical displacement sensor 10, horizontal loading sensor 14 and PWS series electro-hydraulic servo static/dynamic universal testing machine 11 are connected with data acquisition system (DAS) respectively.
Described moving horizontally on the earth material box that base plate 5, angle steel outside framework 7 and organic glass box 8 form all is equipped with horizontal displacement sensors 6.
Be equipped with vertical displacement sensor 10 in the described structure test block 9.
In the earth material box that described angle steel outside framework 7 and organic glass box 8 form earth material 13 is arranged.
The course of work: the soil sample of in the earth material box, packing into, be compacted to the design packing, structure test block 9 is fixed on the upper grip of electro-hydraulic servo static/dynamic universal testing machine by connecting elements 12, starting electro-hydraulic servo static/dynamic universal testing machine control upper grip moves down, structure test block 9 is contacted with soil sample, and the interface of soil and structure test block 9 was soaked in water filling in the earth material box.After applying the interface normal stress by the electro-hydraulic servo static/dynamic universal testing machine, horizontally moving device is done tangential movement at guide rail 3 under the driving of horizontal actuator 15, drives the movement of earth material box to realize the relative tangential motion of soil and structure sample.Can realize interface mechanics behavior under the complex stress path by control electro-hydraulic servo static/dynamic universal testing machine upper grip and horizontal actuator 15.Relative displacement and the stress of the tangential and normal direction at interface record by corresponding displacement and load transducer, by data collecting instrument relevant data are passed on the computing machine, can observe the distortion situation of soil and structural interface under water by organic glass.

Claims (4)

1. the shearing test device of soil and structural interface mechanical characteristic under the observation water, this shearing test device comprises fixed mechanism, horizontal mobile mechanism, earth material box, loading system, it is characterized in that: whole test unit by means of electro-hydraulic servo static/dynamic universal testing machine (11) as main machine frame; To connect the base that joist steel (1) is fixed in testing machine by bolt, support baseboard (2) will be arranged on the described connection joist steel, be welded with guide rail (3) on the support baseboard; By roller (4) with move horizontally the horizontal mobile mechanism that base plate (5) forms and place on the guide rail (3); Described moving horizontally is bolted the earth material box that comprises that angle steel outside framework (7) and organic glass box (8) form on the base plate; Structure test block (9) is fixed on the upper grip of electro-hydraulic servo static/dynamic universal testing machine by connecting elements (12); Horizontal actuator (15) is fixed on the support baseboard (2) by support (16), by horizontal loading sensor (14) with move horizontally base plate (5) and link together; Horizontal displacement sensors (6), vertical displacement sensor (10), horizontal loading sensor (14) and electro-hydraulic servo static/dynamic universal testing machine (11) are connected with data acquisition system (DAS) respectively.
2. soil and the shearing test device of structural interface mechanical characteristic under the observation water according to claim 1 is characterized in that: all be equipped with horizontal displacement sensors (6) on the described earth material box that moves horizontally base plate (5), angle steel outside framework (7) and organic glass box (8) composition.
3. the shearing test device of soil and structural interface mechanical characteristic under the observation water according to claim 1 is characterized in that: be equipped with vertical displacement sensor (10) in the described structure test block (9).
4. the shearing test device of soil and structural interface mechanical characteristic under the observation water according to claim 1 is characterized in that: in the earth material box that described angle steel outside framework (7) and organic glass box (8) form earth material (13) is arranged.
CN 201220533561 2012-10-17 2012-10-17 Shear test device for observing mechanical property of underwater soil and structural interface Expired - Fee Related CN202903619U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220533561 CN202903619U (en) 2012-10-17 2012-10-17 Shear test device for observing mechanical property of underwater soil and structural interface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220533561 CN202903619U (en) 2012-10-17 2012-10-17 Shear test device for observing mechanical property of underwater soil and structural interface

Publications (1)

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CN202903619U true CN202903619U (en) 2013-04-24

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Cited By (2)

* 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
CN110045084A (en) * 2019-03-14 2019-07-23 河海大学 The experimental rig and method of foundation structure and the variation of Soil Interface microscopical structure under observation water

Cited By (3)

* 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
CN110045084A (en) * 2019-03-14 2019-07-23 河海大学 The experimental rig and method of foundation structure and the variation of Soil Interface microscopical structure under observation water

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Granted publication date: 20130424

Termination date: 20131017