CN207439823U - A kind of soil body test for tensile strength device - Google Patents

A kind of soil body test for tensile strength device Download PDF

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Publication number
CN207439823U
CN207439823U CN201721662206.6U CN201721662206U CN207439823U CN 207439823 U CN207439823 U CN 207439823U CN 201721662206 U CN201721662206 U CN 201721662206U CN 207439823 U CN207439823 U CN 207439823U
Authority
CN
China
Prior art keywords
end cap
socket
soil body
tensile strength
soil
Prior art date
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
CN201721662206.6U
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Chinese (zh)
Inventor
李光范
丰田
陈新
符羽佳
杨景超
孙铭乾
谭学玲
田茜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hainan University
Original Assignee
Hainan University
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 Hainan University filed Critical Hainan University
Priority to CN201721662206.6U priority Critical patent/CN207439823U/en
Application granted granted Critical
Publication of CN207439823U publication Critical patent/CN207439823U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of soil body test for tensile strength device, including socket, the first end cap, the second end cap, gas-guide tube and tensiometer;Socket is made of clear material, the open at both ends of socket;The diameter of first end cap and the second end cap is equal to the internal diameter of socket, and after the first end cap and the second end cap fill in socket, dynamic sealing is kept between the first end cap and the second end cap and socket;The inner surface of first end cap and the second end cap is both provided with probe claw;The surface of first end cap and the second end cap is both provided with to connect the fixed column of other devices, and first end covers the stomata that is provided with and can be connected with gas-guide tube;Tensiometer connects the first end cap by fixed column.The utility model can very easily simulate the tension process of soil, carry out the experiments such as undisturbed soil tension test, manipulated soil tension test, the tension test of reinforced earth, it is very suitable for being detected the anti-crack ability of clay in building or structures, there is very strong engineering application value.

Description

A kind of soil body test for tensile strength device
Technical field
The utility model is related to engineering equipment field more particularly to a kind of soil body test for tensile strength devices.
Background technology
Lay particular emphasis on shearing strength for the research of soil strength at present more, and tensile strength (soil body resists the ability stretched) Research it is less.Since soil body tensile strength is smaller, designer is in the design of earth structure and steady under normal circumstances Usually without considering the tensile strength of the soil body in setting analysis.But due to highway, airport, tunnel, mining site, high earth and rockfill dam etc. in recent years Build and be surging forward so that higher requirement is proposed to the anti-crack ability of these buildings or structures, soil is in hydraulic pressure or gas The cleavage fracture that pressure effect is lower to be occurred is as caused by tensile stress, therefore is anticipated to the research of the tensile strength of soil with important reality Justice.
Utility model content
The technical problems to be solved in the utility model is to lack the soil body tensile strength for being suitble to engineer application in the prior art Experimental rig.
In order to solve the above technical problems, the technical solution adopted in the utility model is:A kind of soil body test for tensile strength dress It puts, including socket, the first end cap, the second end cap, gas-guide tube and tensiometer;
Socket is made of clear material, the open at both ends of socket;
The diameter of first end cap and the second end cap is equal to the internal diameter of socket, when the first end cap and the second end cap fill in socket it Afterwards, dynamic sealing is kept between the first end cap and the second end cap and socket;The inner surface of first end cap and the second end cap is respectively provided with There is probe claw;
The surface of first end cap and the second end cap is both provided with to connect the fixed column of other devices, and first end, which covers, to be set It is equipped with the stomata that can be connected with gas-guide tube;
Tensiometer connects the first end cap by fixed column.
The application method of this experimental rig is:
(1) being placed on socket level on test platform;
(2) suitable vaseline is applied in tube walls;
(3) soil body to be tested is inserted into socket;
(4) the first end cap and the second end cap are filled in into socket from socket both sides, the first end cap and slight poly- of the second end cap Hold together the soil body;
(5) stomata of the first end cover surface is connected into gas-guide tube, the other end connection vacuum pump of gas-guide tube;
(6) vacuum pump is opened, takes out the air in the soil body so that the soil body is closely knit;
(7) the second end cap is fixed with test platform, the first end cap connection tensiometer applies the first end cap using tensiometer Add gradual increased pulling force and record the horizontal displacement of the first end cap until apparent crack occurs in the soil body;
(8) stress curve of the soil body is drawn, calculates the limit stress and elongation of the soil body:
FN:The pulling force reading of tensiometer during soil-body landslide;
A:The sectional area of the soil body;
l1:The length of soil body during soil-body landslide;
l0:The original of the soil body is long;
Further, the surface of second end cap is also equipped with the stomata that can be connected with gas-guide tube, makes at the trial The experiment soil body is vacuumized from both ends with two vacuum pumps.
Further, the stomata quantity of first end cap and the second end cover surface is multiple, what multiple stomatas disperseed It is arranged in the surface of the first end cap and the second end cap, multiple scattered stomatas, which help uniformly to take out soil body each area, to be included Gas.
Further, the socket is made of glass.
Further, the barrel of socket is provided with scale, convenient for recording the length and elongation of the soil body.
Further, the pulling force is calculated as hand-rail type tensiometer.
Advantageous effect:The utility model soil body test for tensile strength apparatus structure is simple, easy to operate, can be very easily The tension process of soil is simulated, carries out the experiments such as undisturbed soil tension test, manipulated soil tension test, the tension test of reinforced earth, it is non- Often it is suitble to be detected the anti-crack ability of clay in building or structures, there is very strong engineering application value.
Description of the drawings
Fig. 1 is the structure diagram (pumping state) of 1 experimental rig of embodiment.
Fig. 2 is the A-A sectional views of Fig. 1.
Fig. 3 is the structure diagram (tensional state) of 1 experimental rig of embodiment.
Wherein:1st, socket;2nd, the first end cap;3rd, the second end cap;4th, gas-guide tube;5th, tensiometer;6th, fixed column;7th, stomata; 8th, test platform;9th, the soil body.
Specific embodiment
The utility model is described in further detail With reference to embodiment.
Embodiment 1
As shown in Figure 1 to Figure 3, the soil body test for tensile strength device of the present embodiment, including socket 1, the first end cap 2, Two end caps 3, gas-guide tube 4 and tensiometer 5;
Socket 1 is made of glass, and the open at both ends of socket 1, the barrel of socket 1 is provided with scale;
The diameter of first end cap 2 and the second end cap 3 is equal to the internal diameter of socket 1, when the first end cap 2 and the second end cap 3 are filled in After socket 1, dynamic sealing is kept between the first end cap 2 and the second end cap 3 and socket 1;First end cap 2 and the second end cap 3 Inner surface is both provided with probe claw;
As shown in Fig. 2, the surface of the first end cap 2 and the second end cap 3 is both provided with to connect the fixed column of other devices 6, the multiple stomatas 7 that can be connected with gas-guide tube 4 are both provided on the first end cap 2 and the second end cap 3;What multiple stomatas 7 disperseed It is arranged in the surface of the first end cap 2 and the second end cap 3;
Tensiometer 5 is hand-rail type tensiometer 5, and tensiometer 5 connects the first end cap 2 by fixed column 6.
The application method of this experimental rig is:
(1) being placed on 1 level of socket on test platform 8;
(2) suitable vaseline is applied in 1 inner wall of socket;
(3) soil body to be tested is inserted into socket 1;
(4) the first end cap 2 and the second end cap 3 are filled in into socket 1 from 1 both sides of socket, the first end cap 2 and the second end cap 3 are light Micro- gathers the soil body 9;
(5) as shown in Figure 1, by the stomata 7 on 3 surface of the first end cap 2 and the second end cap respectively connection a piece gas-guide tube 4, every The other end of gas-guide tube 4 connects a vacuum pump;
(6) vacuum pump is opened, takes out the air in the soil body 9 so that the soil body 9 is closely knit;
(7) as shown in figure 3, the second end cap 3 is fixed with test platform 8, the first end cap 2 connection tensiometer 5 uses pulling force 5 pair of first end cap 2 of meter applies gradual increased pulling force and records the horizontal displacement of the first end cap 2 until the soil body 9 occurs significantly Crack;
(8) stress curve of the soil body is drawn, calculates the limit stress and elongation of the soil body:
FN:The pulling force reading of tensiometer during soil-body landslide;
A:The sectional area of the soil body;
l1:The length of soil body during soil-body landslide;
l0:The original of the soil body is long.
Although the embodiment of the utility model is illustrated in specification, these embodiments are intended only as carrying Show, should not limit the scope of protection of the utility model.Various omissions are carried out in the range of the utility model aims are not departed from, are put It changes and change should be included in the scope of protection of the utility model.

Claims (6)

1. a kind of soil body test for tensile strength device, it is characterised in that:Including socket, the first end cap, the second end cap, gas-guide tube and Tensiometer;
Socket is made of clear material, the open at both ends of socket;
The diameter of first end cap and the second end cap is equal to the internal diameter of socket, after the first end cap and the second end cap fill in socket, Keep dynamic sealing between first end cap and the second end cap and socket, the inner surface of the first end cap and the second end cap is both provided with spy Pawl;
The surface of first end cap and the second end cap is both provided with to connect the fixed column of other devices, and first end, which covers, to be provided with The stomata that can be connected with gas-guide tube;
Tensiometer connects the first end cap by fixed column.
2. soil body test for tensile strength device according to claim 1, it is characterised in that:The surface of second end cap It is provided with the stomata that can be connected with gas-guide tube.
3. soil body test for tensile strength device according to claim 2, it is characterised in that:First end cap and second end The stomata quantity of cap surface is multiple, and what multiple stomatas disperseed is arranged in the surface of the first end cap and the second end cap.
4. soil body test for tensile strength device according to claim 1, it is characterised in that:The socket is made of glass.
5. soil body test for tensile strength device according to claim 4, it is characterised in that:The barrel of the socket is provided with Scale.
6. soil body test for tensile strength device according to claim 1, it is characterised in that:The pulling force is calculated as hand-rail type drawing Power meter.
CN201721662206.6U 2017-12-04 2017-12-04 A kind of soil body test for tensile strength device Expired - Fee Related CN207439823U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721662206.6U CN207439823U (en) 2017-12-04 2017-12-04 A kind of soil body test for tensile strength device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721662206.6U CN207439823U (en) 2017-12-04 2017-12-04 A kind of soil body test for tensile strength device

Publications (1)

Publication Number Publication Date
CN207439823U true CN207439823U (en) 2018-06-01

Family

ID=62285700

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721662206.6U Expired - Fee Related CN207439823U (en) 2017-12-04 2017-12-04 A kind of soil body test for tensile strength device

Country Status (1)

Country Link
CN (1) CN207439823U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113390715A (en) * 2021-06-21 2021-09-14 水利部交通运输部国家能源局南京水利科学研究院 Gravel-doped clay stretching device suitable for different gravel-doped particle sizes and testing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113390715A (en) * 2021-06-21 2021-09-14 水利部交通运输部国家能源局南京水利科学研究院 Gravel-doped clay stretching device suitable for different gravel-doped particle sizes and testing method
CN113390715B (en) * 2021-06-21 2022-03-18 水利部交通运输部国家能源局南京水利科学研究院 Gravel-doped clay stretching device suitable for different gravel-doped particle sizes and testing method

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GR01 Patent grant
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: 20180601

Termination date: 20181204