CN205192857U - Tensile experimental apparatus based on conventional triaxial apparatus - Google Patents

Tensile experimental apparatus based on conventional triaxial apparatus Download PDF

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Publication number
CN205192857U
CN205192857U CN201521040755.0U CN201521040755U CN205192857U CN 205192857 U CN205192857 U CN 205192857U CN 201521040755 U CN201521040755 U CN 201521040755U CN 205192857 U CN205192857 U CN 205192857U
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CN
China
Prior art keywords
blade
groove
cavity
transmission rod
sample cap
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Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN201521040755.0U
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Chinese (zh)
Inventor
李新明
蒋桂芹
纠永志
蔡鑫
袁振霞
林国华
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Zhongyuan University of Technology
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Zhongyuan University of Technology
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Publication date
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Priority to CN201521040755.0U priority Critical patent/CN205192857U/en
Application granted granted Critical
Publication of CN205192857U publication Critical patent/CN205192857U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a tensile experimental apparatus based on conventional triaxial apparatus, including measuring one's own ability ring, dowel steel, sample cap, the upper portion of encircling through anchor clamps and dowel steel of measuring one's own ability links together, and the blade is installed to the dowel steel lower part, and sample cap middle part is provided with recess I, and the both sides of recess I are provided with cavity, blade and cavity phase -match respectively. The utility model discloses an anchor clamps will be measured one's own ability the ring sum dowel steel and connected, and through the blade and the cavity phase -match in the sample cap of dowel steel lower part, the pulling force is applyed in the realization on the sample cap, can realize easily that the confined pressure is greater than this kind of stress state of axle load. Blade detachable installs in the dowel steel lower part, the installation and dismantle be convenient for, and the recess II that sets up in the dowel steel lower part is used for the location to make the rooting -in of blades position correct on the one hand, and on the other hand ensures that rooting -in of blades is firm. The space is guaranteed not have between the two in the arc protruding I of the cavity up end setting of sample cap and protruding II cooperations of arc of blade up end, makes the experiment effectual, and it is more accurate to test.

Description

Based on the tensile test device of normal triaxial instrument
Technical field
The utility model belongs to Soil mechanics experiment device technique field, is specifically related to a kind of tensile test device based on normal triaxial instrument.
Background technology
Ordinary triaxial test transmitting axle force System Implementation method is: by a power transmission axostylus axostyle, be passed to soil sample top through sample cap.Because power transmission axostylus axostyle and sample cap do not connect as one, cause when confined pressure applies, the concretion state being greater than confined pressure to consolidation (confined pressure=axle pressure) or axle pressure such as can only to carry out, and the consolidation of confined pressure > axial compression stress state can not be carried out, substantially reduce the range of application of triaxial apparatus.The soil body has more significant stress path dependence, and its intensity size and stress state, stress history, stress path etc. are all closely related.For special soils such as such as swelled grounds, due to soil layer deposition load-bearing history, age and the soil body is dry and the factor effect such as ageing, its concretion state mostly is the overconsolidation state of confined pressure > axial compression, and normal triaxial instrument seems unable to do what one wishes.
Along with improving constantly of China's testing equipment precision and stability, the colleges and universities and the R&D institution that have normal triaxial instrument get more and more.Although external import instrument has the related experiment that can realize this stress state of confined pressure > axial compression at present, but the soil sample size of itself and China's soil test does not match, due to the size effect of soil body mechanical characteristic, cause the problems such as test result cannot contrast.In addition, there is the more high factor of price in import instrument.
Utility model content
For above-mentioned deficiency described in the prior, the purpose of this utility model be to provide a kind of dress sample prescription just, simple to operate, measure precisely, the tensile test device based on normal triaxial instrument that convenient disassembly cost is low.
For realizing above-mentioned technical purpose, the technical scheme that the utility model adopts is as follows:
A kind of tensile test device based on normal triaxial instrument, comprise ring of measuring one's own ability, transmission rod, sample cap, ring of measuring one's own ability is linked together by the top of fixture and transmission rod, transmission rod bottom is provided with blade, groove I is provided with in the middle part of sample cap, the both sides of groove I are respectively arranged with cavity, and blade and cavity match.
Described sample cap comprises body, is provided with groove I in the middle part of body, and the both sides of groove I are respectively arranged with cavity, and the middle part of groove I is provided with pilot hole, and the groove I of pilot hole side is provided with the through hole for Bonding pressure device.
The upper surface of described cavity is provided with arc convex I.
The side end face of described cavity is arcwall face.
The bottom of described transmission rod is provided with groove II, and blades installation is at the groove II place of transmission rod.
Arc convex II is provided with in the upper surface of blade.
The length of blade and the diameter of transmission rod and the width that is greater than groove I, and be less than the distance between two cavitys.
Described blade comprises the first blade and the second blade, and the first blade and the second blade are by bolt tightening on transmission rod, and two-piece type structure is convenient to installation and removal.
The utility model is connected with transmission rod by fixture ring of measuring one's own ability, the blade installed by transmission rod bottom and the cavity arranged in sample cap are matched and to be connected with sample cap by transmission rod, can realize applying pulling force on sample cap, easily can realize confined pressure and be greater than this stress state of axial compression.Blade is dismountable is arranged on transmission rod bottom, is convenient to installation and removal, and the groove II arranged in transmission rod bottom is used for location on the one hand makes blades installation position correct, guarantees that blades installation is firm on the other hand.The arc convex I of cavity upper surface setting of sample cap and the arc convex II of blade upper surface coordinate guarantees do not have space between the two, and make experiment effect good, it is more accurate to test.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing A of Fig. 1.
Fig. 3 is the front view of the utility model sample cap.
Fig. 4 is the utility model sample cap vertical view.
Fig. 5 is the structural representation of the utility model blade.
Fig. 6 is the structural representation of the utility model transmission rod.
Fig. 7 is using state figure of the present utility model.
Fig. 8 is the experimental result comparison diagram of the utility model and normal triaxial instrument.
Embodiment
As shown in figs. 1-7, a kind of tensile test device based on normal triaxial instrument, comprises ring 1 of measuring one's own ability, transmission rod 2, sample cap 3.Ring 1 of measuring one's own ability is linked together by the top of fixture 4 with transmission rod 2, and the bottom of transmission rod 2 is provided with groove II 2-1, and blade 5 is arranged on the groove II 2-1 place of transmission rod 2, is provided with arc convex II 5-1 in the upper surface of blade 5.
Described sample cap 3 comprises body 3-3, is provided with groove I 3-1 in the middle part of body 3-3, and the both sides of groove I 3-1 are respectively arranged with cavity 3-2, and the upper surface of described cavity 3-2 is provided with arc convex I 3-2-1, and the side end face of cavity 3-2 is arcwall face.
The length of blade 5 and the diameter of transmission rod 2 and the width that is greater than groove I 3-1, and be less than the distance between two cavity 3-2.
The middle part of groove I 3-1 is provided with pilot hole 3-1-1, the groove I 3-1 of pilot hole 3-1-1 side is provided with the through hole 3-1-2 for Bonding pressure device.
Preferably, described blade 5 comprises the first blade and the second blade, and the first blade and the second blade are by bolt tightening on transmission rod 2, and two-piece type structure is convenient to installation and removal.
Fixture 4 in the present embodiment can adopt the structure identical with blade.
Based on the method for operating of the tensile test device of normal triaxial instrument, step is as follows:
Step 1, is arranged on the groove II 2-1 place of transmission rod 2 by blade 5, and by bolt tightening on transmission rod 2;
Step 2, the base 6-1 of pressure chamber 6 puts permeable stone I, filter paper successively, is located at outside sample soil by rubber membrane, and is tightened in rubber membrane lower end and base 6-1 with rubber band with holding film jacket casing; Put filter paper, permeable stone II successively at sample soil top, make water-filling in sample cap 3, and be placed on permeable stone II, with rubber band, rubber membrane upper end and sample cap 3 are tightened;
Step 3, setting pressure room 6, and according to the position that the pilot hole 3-1-1 in the middle part of the groove I 3-1 of sample cap 3 regulates transmission rod 2, guarantee that transmission rod 2 is positioned at the center of sample cap 3, and make the axis direction of blade 5 parallel with groove I 3-1;
Step 4, presses down transmission rod 2, transmission rod 2 is positioned at and is decided to be hole 3-1-1, the center of transmission rod 2 and the center superposition of pilot hole 3-1-1, and makes blade 5 be positioned at groove I 3-1;
Step 5, rotates transmission rod 2 and blade 5 is entered in cavity 3-2, and arc convex II 5-1 of blade 5 upper surface is contacted with arc convex I 3-2-1 of cavity 3-2 upper surface;
Step 6, is connected transmission rod 2 top with ring 1 of measuring one's own ability by fixture 4;
Step 7, the work of dress sample completes, and in pressure chamber 6 after topped up with water, can apply confined pressure, and then has toothed gearing reversion by normal triaxial, power transmission axostylus axostyle can be made to produce pulling force, and then realize the concretion state of confined pressure > axial compression.
The experimental result comparison diagram of the utility model and normal triaxial instrument, as shown in Figure 8, as seen from Figure 8, the utility model can realize the consolidation effect that confined pressure is greater than axial compression preferably, meets the related request of experiment.Therefore, utilize the utility model can realize swelled ground overconsolidation state (confined pressure > axial compression) on normal triaxial instrument, this will expand ordinary triaxial test systematic difference scope further.

Claims (7)

1. the tensile test device based on normal triaxial instrument, it is characterized in that: comprise ring of measuring one's own ability (1), transmission rod (2), sample cap (3), ring (1) of measuring one's own ability is linked together by the top of fixture (4) with transmission rod (2), transmission rod (2) bottom is provided with blade (5), sample cap (3) middle part is provided with groove I (3-1), the both sides of groove I (3-1) are respectively arranged with cavity (3-2), and blade (5) and cavity (3-2) match.
2. the tensile test device based on normal triaxial instrument according to claim 1, it is characterized in that: described sample cap (3) comprises body (3-3), body (3-3) middle part is provided with groove I (3-1), the both sides of groove I (3-1) are respectively arranged with cavity (3-2), the middle part of groove I (3-1) is provided with pilot hole (3-1-1), the groove I (3-1) of pilot hole (3-1-1) side is provided with the through hole (3-1-2) for Bonding pressure device.
3. the tensile test device based on normal triaxial instrument according to claim 2, is characterized in that: the upper surface of described cavity (3-2) is provided with arc convex I (3-2-1).
4. the tensile test device based on normal triaxial instrument according to claim 3, is characterized in that: the side end face of cavity (3-2) is arcwall face.
5. the tensile test device based on normal triaxial instrument according to claim 1, is characterized in that: the bottom of described transmission rod (2) is provided with groove II (2-1), and blade (5) is arranged on groove II (2-1) place of transmission rod (2).
6. the tensile test device based on normal triaxial instrument according to claim 5, is characterized in that: be provided with arc convex II (5-1) in the upper surface of blade (5).
7. the tensile test device based on normal triaxial instrument according to claim 3 or 6, is characterized in that: the length of blade (5) and the diameter of transmission rod (2) and the width that is greater than groove I (3-1), and be less than the distance between two cavitys (3-2).
CN201521040755.0U 2015-12-12 2015-12-12 Tensile experimental apparatus based on conventional triaxial apparatus Expired - Fee Related CN205192857U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521040755.0U CN205192857U (en) 2015-12-12 2015-12-12 Tensile experimental apparatus based on conventional triaxial apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521040755.0U CN205192857U (en) 2015-12-12 2015-12-12 Tensile experimental apparatus based on conventional triaxial apparatus

Publications (1)

Publication Number Publication Date
CN205192857U true CN205192857U (en) 2016-04-27

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CN201521040755.0U Expired - Fee Related CN205192857U (en) 2015-12-12 2015-12-12 Tensile experimental apparatus based on conventional triaxial apparatus

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105403458A (en) * 2015-12-12 2016-03-16 中原工学院 Tensile experiment device based on conventional triaxial apparatus and operation method therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105403458A (en) * 2015-12-12 2016-03-16 中原工学院 Tensile experiment device based on conventional triaxial apparatus and operation method therefor

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160427

Termination date: 20191212