CN205861456U - A kind of assay device testing dredging cohesive soil tensile strength - Google Patents
A kind of assay device testing dredging cohesive soil tensile strength Download PDFInfo
- Publication number
- CN205861456U CN205861456U CN201620670988.7U CN201620670988U CN205861456U CN 205861456 U CN205861456 U CN 205861456U CN 201620670988 U CN201620670988 U CN 201620670988U CN 205861456 U CN205861456 U CN 205861456U
- Authority
- CN
- China
- Prior art keywords
- test
- tensile strength
- cohesive soil
- assay device
- plate
- 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.)
- Active
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
This utility model relates to a kind of assay device testing dredging cohesive soil tensile strength.This utility model belongs to earthwork test Instrument technical field.A kind of assay device testing dredging cohesive soil tensile strength, it is characterized in: assay device includes fixation device, charger, displacement tester and base plate four part, fixation device is divided into strap and mobile clamping plate, strap is fixed on base plate, mobile clamping plate are oppositely arranged displacement tester, and mobile clamping plate connect charger.The advantages such as this utility model has simple in construction, and test is quick, stable performance, and data are reliable, simple and easy to do, and range is wide；Test specimen stretcher strain situation can be observed, directly record tension and the stretching strain of test specimen.
Description
Technical field
This utility model belongs to Dredging Technology field, particularly relates to a kind of test and dredges cohesive soil tensile strength
Assay device.
Background technology
At present, in Dredging and filling engineering, along with the development of dredging technology, by typical case's hard cohesive soil, close sand
The theoretical research of excavating of soil and rock is applied in the design of reamer, drag head and boats and ships, can be greatly improved the construction effect of dredger
Rate.Increasingly paying attention to the research of dredging rationale, a series of dredgings are excavated, are carried and the rationale of dredger equipment innovation
Research topic is carried out.In the research process of dredging work rationale, it be unable to do without the object dredging rock that dredger excavates
Soil and the mechanics index of physics of ground, excavate ground due to dredging work and mainly involve the theory of comminution of ground, need to obtain
Some specific physical mechanical index of dredging ground, as dredged the test for tensile strength index of cohesive soil.But ground geotechnique
In test, these test indexes are seldom used, and do not have the equipment and instrument of maturation to go to simulate real test, basic according to test
Principle, researches and develops earthwork test Instrument in the research of dredging work problem, becomes the technology such as puzzlement research and development and scheme solution
Problem.
Summary of the invention
This utility model provides a kind of test dredging cohesive soil tension for solving technical problem present in known technology
The assay device of intensity.
The purpose of this utility model provides one to have simple in construction, and test is quick, stable performance, and data are reliable, easy
Easy, range is wide；Test specimen stretcher strain situation can be observed, the survey of the feature such as tension and stretching strain of directly recording test specimen
The assay device of examination dredging cohesive soil tensile strength.
This utility model, for dredging fundamental research, needs the tensile strength of test dredging cohesive soil, according to dredging
The ultimate principle of the test for tensile strength of cohesive soil, the assay device of the test dredging cohesive soil tensile strength of development, use single
Axle extension test cohesive soil tensile strength.
The assay device of this utility model test dredging cohesive soil tensile strength is adopted the technical scheme that:
A kind of assay device testing dredging cohesive soil tensile strength, is characterized in: assay device includes fixation device, adds
Carry put, displacement tester and base plate four part, fixation device is divided into strap and mobile clamping plate, and strap is fixed on
On base plate, mobile clamping plate are oppositely arranged displacement tester, and mobile clamping plate connect charger.
The assay device of this utility model test dredging cohesive soil tensile strength can also adopt the following technical scheme that
The assay device of described test dredging cohesive soil tensile strength, is characterized in: base plate is surface light slide plate.
The assay device of described test dredging cohesive soil tensile strength, is characterized in: the surface of surface light slide plate is steel
Changing glass, bottom is wooden, plastics or metallic plate.
The assay device of described test dredging cohesive soil tensile strength, is characterized in: strap and displacement measurement dress
Put mode with bolts to be fixed on base plate.
The assay device of described test dredging cohesive soil tensile strength, is characterized in: strap and mobile clamping plate are
Aluminium sheet, arc-shaped structure is used for clamping test specimen two ends, prevents test specimen two ends stress from concentrating.
The assay device of described test dredging cohesive soil tensile strength, is characterized in: displacement tester is digital display position
Moving meter, digital display displacement meter is fixed on base plate.
The assay device of described test dredging cohesive soil tensile strength, is characterized in: digital display displacement meter, range ability 0
～100mm, precision 0.01mm.
The assay device of described test dredging cohesive soil tensile strength, is characterized in: fixation device is suitable for dredging viscosity
The soil test specimen section a width of 30-100mm*20-80mm of long *, standard specimen a length of 150～200mm.
The assay device of described test dredging cohesive soil tensile strength, is characterized in: charger includes bracing wire, loading
Load plate and counterweight, bracing wire one end connects mobile clamping plate, and the other end connects the loading load plate loading counterweight.
The assay device of described test dredging cohesive soil tensile strength, is characterized in: bracing wire connects mobile by hook
Clamping plate, pulley, other end connection loading load plate are walked around in bracing wire.
This utility model has the advantage that with good effect:
Test the technical scheme that the assay device of dredging cohesive soil tensile strength is brand-new owing to have employed this utility model, with
Prior art is compared, and this utility model has the following characteristics that
1. test proves that this method test achievement is stable, easy to operation.Test specimen stretcher strain situation can be observed, directly survey
Obtain tension and the stretching strain of test specimen.
2. assay device includes fixation device, charger, displacement tester and test smooth plate.For dredging viscosity
Soil damaged deformation is big, and displacement tester has selected digital display great-scale displacement meter；For tensile test problem of stress concentration, clamping plate
Use lightweight aluminium thin plate, use camber line to clamp test specimen two ends, prevent test specimen two ends stress from concentrating and rapid damage occurs.
Accompanying drawing explanation
Fig. 1 is the structural representation of the assay device of test dredging cohesive soil tensile strength；
Fig. 2 is fixation device planar structure schematic diagram of the present utility model；
Fig. 3 is dredging cohesive soil tensile stress σ～strain stress relation curve.
In figure, 1, fixing end, 2, strap, 3, standard pattern position, 4, base plate, 5, drag hook, 6, pulley, 7, smooth
Plate, 8, loading load plate, 9, displacement meter, 10, mobile clamping plate.
Detailed description of the invention
For utility model content of the present utility model, feature and effect can be further appreciated that, hereby enumerate following example, and
Accompanying drawing is coordinated to describe in detail as follows:
Refering to accompanying drawing 1, Fig. 2 and Fig. 3.
Embodiment 1
A kind of assay device testing dredging cohesive soil tensile strength, it includes fixation device, charger, displacement measurement
Device and base plate four part, agent structure is bolt fastening structure.Fixation device is divided into strap 2 and mobile clamping plate 10, Gu
Clamp plate and mobile clamping plate 10 use lightweight aluminium thin plate, design arc line shaped clamping plate to clamp test specimen two ends, prevent test specimen two ends stress
Concentrate and rapid damage occurs.Base plate 4 is surface light slide plate, and surface is safety glass, and bottom is plank.Strap 2 uses spiral shell
Tethering to connect and be fixed on base plate by fixing end 1, mobile clamping plate 10 are oppositely arranged digital display great-scale displacement meter 9, and bolt used by displacement meter 9
It is fixed on base plate 4.Digital display great-scale displacement meter 9, range ability 0～100mm, precision 0.01mm.Fixation device is suitable for dredging
The a width of 50mm*50mm of the long * of cohesive soil test specimen section, standard specimen a length of 150～200mm.Charger includes bracing wire, pulley
6, loading load plate 8 and counterweight, bracing wire one end is by the hook 5 mobile clamping plate 10 of connection, and pulley 6, other end connection dress are walked around in bracing wire
Carry the loading load plate 8 of counterweight.
The concrete structure of the present embodiment and process of the test:
1. assay device
The agent structure of dredging cohesive soil test for tensile strength device is bolt fastening structure, by fixation device, adds and carries
Put, displacement tester and bottom surface smooth plate four part composition.Fixation device is made up of a pair symmetrical fixture, and one end fixture leads to
The threaded rod crossing a 12cm length is connected on fixing end, and according to the length of cohesive soil test specimen, screw thread can be passed through in the position of fixture
Nut on bar arbitrarily regulates；One end fixture arranges hook and draw-in groove, and draw-in groove is arranged on the center in fixture width face, under draw-in groove
Side is hook, and hook is connected with loading box by bracing wire and pulley.
The box that loads in charger is connected with the fixture arranging hook by strength fishing line, uses standard test weight to add
Carry.
Displacement tester is the digital display displacement meter of wide range, is anchored on base plank by rivet, digital display during test
The termination of displacement meter withstands in the draw-in groove of one end fixture, and along with the deformation of cohesive soil test specimen, termination can be freely movable.
Bottom surface smooth plate is safety glass, is pasted onto on plank by seccotine, and bottom surface smooth plate is cohesive soil test specimen
Test platform, for reducing the friction of test specimen and safety glass, all coats lubricant on the bottom of test specimen and glass at the trial, carries
High test specimen draws high the precision of deformation.
The assay device of this test dredging cohesive soil tensile strength, simple in construction, operates spry and light convenience, and parts are easily changed
And making, gross weight is 4.2kg, easy to carry.
2. the process being embodied as
A) sample uses undisturbed clay.Use square cross-section, a size of 50mm × 50mm, a length of 150～200mm.
B) to undisturbed soil sample, first with cut soil cutter or wire saw cut be placed on slightly larger than the earth pillar of given size cut soil frame dish
On, with cut soil cutter nestle up mix up size cut soil frame side, carefully cut.Earth pillar face reaches the cross dimensions of regulation, by long
Degree scabbles two ends, reaches firmly to be stuck in the clamping plate of assay device.
C) complete for making sample two ends are stuck in clamping plate, are placed on smooth plate, in order to reduce plate and test bay
Friction, can smear lubricant on smooth plate.
D) sample one end is rigidly attached to the fixing end of device, and the other end withstands on the contact of displacement meter, then uses hook
Drawing device hangs up loading load plate by pulley.
E) displacement meter is adjusted to zero-bit or initial reading.
F) it is further applied load on loading load plate, the size of every grade of load, start by anticipated failing load 1/6～1/7 and execute
Add, be reduced to 1/10～1/6 close to when destroying.
G) after every grade of load applies, start with interval 1,5,10min measure axial deformation reading 1 time.The most every 10min
Surveying note 1 time, until 2 deformation reading differences, less than 0.02mm, (sample little to deformation can shorten time survey note deformation and read
Number), next stage load can be applied.Apply step by step, until fracture, take the meansigma methods of last 2 grades of loads as breaking load.
H) remove sample, observe and destroy section and carry out test data sheet, earth material at surface of fracture of materialsing, measure moisture content,
As actual moisture content during specimen test.
I) repairing experiment data, calculate tensile stress σ of sample, elongation strain ε, and tensile strength is σ t, and drafting is drawn
Stretch stress σ～strain stress relation curve.
3. concrete technical parameter:
Assay device gross weight: 4.2kg
Digital display displacement metering journey: 0～100mm
Digital display displacement meter precision: 0.01mm
Digital display displacement meter length: 420mm
Base plate plank long * width * is thick: 600mm*400mm*20mm
Smooth plate long * width * is thick: 450mm*250mm*4mm
Diameter of pulley: 40mm
Standard specimen section long * width: 50mm*50mm
Standard specimen length: 150～200mm
Standard test weight quality: 5g and 10g
Load box long * width * high: 120mm*80mm*120mm
Strongly fishing line load capacity: 15kg
4. application case
(1) physico-mechanical properties of cohesive soil is dredged
(2) result of the test
Tensile stress σ of the dredging cohesive soil of employing assay device test～strain stress relation curve are as shown in Figure 3.Take
The meansigma methods of rear 2 grades of loads, as breaking load, is the tensile strength of dredging cohesive soil, and moisture content is the cohesive soil of 37.8%
Tensile strength is 6.46Kpa, moisture content be the cohesive soil tensile strength of 32.5% be 13.73Kpa.
The present embodiment has described simple in construction, and test is quick, stable performance, and data are reliable, simple and easy to do, use model
Enclose wide；Test specimen stretcher strain situation can be observed, the good effect such as tension and stretching strain of directly recording test specimen.
Claims (10)
1. test an assay device for dredging cohesive soil tensile strength, it is characterized in that: assay device includes fixation device, loading
Device, displacement tester and base plate four part, fixation device is divided into strap and mobile clamping plate, and strap is fixed on the end
On plate, mobile clamping plate are oppositely arranged displacement tester, and mobile clamping plate connect charger.
The assay device of test dredging cohesive soil tensile strength the most according to claim 1, is characterized in that: base plate is surface
Smooth plate.
The assay device of test dredging cohesive soil tensile strength the most according to claim 2, is characterized in that: surface light slide plate
Surface be safety glass, bottom is wooden, plastics or metallic plate.
4., according to the assay device of the test dredging cohesive soil tensile strength described in claim 1,2 or 3, it is characterized in that: fixing
Clamping plate and displacement tester mode with bolts are fixed on base plate.
The most according to claim 1 test dredging cohesive soil tensile strength assay device, it is characterized in that: strap and
Mobile clamping plate are aluminium sheet, and arc-shaped structure is used for clamping test specimen two ends, prevent test specimen two ends stress from concentrating.
The assay device of test dredging cohesive soil tensile strength the most according to claim 1, is characterized in that: displacement measurement fills
Being set to digital display displacement meter, digital display displacement meter is fixed on base plate.
The assay device of test dredging cohesive soil tensile strength the most according to claim 6, is characterized in that: digital display displacement
Meter, range ability 0～100mm, precision 0.01mm.
The assay device of test dredging cohesive soil tensile strength the most according to claim 1, is characterized in that: fixation device is fitted
With the dredging cohesive soil test specimen section a width of 30-100mm*20-80mm of long *, standard specimen a length of 150～200mm.
The assay device of test dredging cohesive soil tensile strength the most according to claim 1, is characterized in that: charger bag
Including bracing wire, loading load plate and counterweight, bracing wire one end connects mobile clamping plate, and the other end connects the loading load plate loading counterweight.
The assay device of test dredging cohesive soil tensile strength the most according to claim 9, is characterized in that: bracing wire is passed through
Hook connects mobile clamping plate, and pulley is walked around in bracing wire, and the other end connects loading load plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620670988.7U CN205861456U (en) | 2016-06-29 | 2016-06-29 | A kind of assay device testing dredging cohesive soil tensile strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620670988.7U CN205861456U (en) | 2016-06-29 | 2016-06-29 | A kind of assay device testing dredging cohesive soil tensile strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205861456U true CN205861456U (en) | 2017-01-04 |
Family
ID=57644751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620670988.7U Active CN205861456U (en) | 2016-06-29 | 2016-06-29 | A kind of assay device testing dredging cohesive soil tensile strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205861456U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462469A (en) * | 2017-09-08 | 2017-12-12 | 山西省交通科学研究院 | A kind of slope soil tensile strength on-site testing device and method of testing |
| CN108051300A (en) * | 2017-12-13 | 2018-05-18 | 芜湖市皖南造船有限公司 | A kind of experimental rig for testing dredging cohesive soil tensile strength |
| CN109374404A (en) * | 2018-11-02 | 2019-02-22 | 河海大学 | A kind of sample preparation device, method and the test method of geotechnique's tension test |
| CN112179777A (en) * | 2020-11-27 | 2021-01-05 | 南京仪汇仪器设备有限公司 | Degradable plastic products intensity detection device |
-
2016
- 2016-06-29 CN CN201620670988.7U patent/CN205861456U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462469A (en) * | 2017-09-08 | 2017-12-12 | 山西省交通科学研究院 | A kind of slope soil tensile strength on-site testing device and method of testing |
| CN108051300A (en) * | 2017-12-13 | 2018-05-18 | 芜湖市皖南造船有限公司 | A kind of experimental rig for testing dredging cohesive soil tensile strength |
| CN109374404A (en) * | 2018-11-02 | 2019-02-22 | 河海大学 | A kind of sample preparation device, method and the test method of geotechnique's tension test |
| CN112179777A (en) * | 2020-11-27 | 2021-01-05 | 南京仪汇仪器设备有限公司 | Degradable plastic products intensity detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205861456U (en) | A kind of assay device testing dredging cohesive soil tensile strength | |
| CN101603899B (en) | Field portable experiment system for tensile mechanical property of plant root system | |
| Dai et al. | Static and dynamic flexural strength anisotropy of Barre granite | |
| Sahouryeh et al. | Crack growth under biaxial compression | |
| Mirzaghorbanali et al. | Shear strength properties of cable bolts using a new double shear instrument, experimental study, and numerical simulation | |
| CN205120490U (en) | Geotechnique's type test piece tensile test load anchor clamps | |
| CN105865924A (en) | Cohesive-soil strain-control-type I-type fracture toughness tester and testing method | |
| CN107036915A (en) | The experimental rig and method of FRP and Bond Performance Between Concrete are measured under a kind of Impact Load | |
| CN104390858A (en) | Simple device of shear rheometer | |
| CN2840010Y (en) | Fibre reinforced composite material and matrix cohesiveness testing device | |
| Liu et al. | CFRP lamella stay-cable and its force measurement based on microwave radar | |
| Aziz et al. | Double shear testing of bolts | |
| CN201517982U (en) | Testing machine for tensile strength of roots | |
| CN106124321B (en) | A kind of detachable anchor rod anchored features Testbed | |
| CN204228539U (en) | A kind of easy device of shear rheology instrument | |
| CN106289977B (en) | Bolt concrete tensile test device and test method | |
| CN201464279U (en) | Portable field test system for tensile mechanical property of plant roots | |
| CN203758853U (en) | Stack pull type field large direct shearing equipment | |
| Naeini et al. | Effect of waste bottle chips on strength parameters of silty soil | |
| CN213842892U (en) | Drawing resistance testing machine for connection of polyethylene pressure pipe and pipe fitting | |
| CN110530713B (en) | Anchoring rock mass sample and rock mass engineering anchoring mechanism test system | |
| Salvi et al. | Strain-rate effects on unidirectional carbon-fiber composites | |
| Castaneda et al. | Field test method for residual stress in plain concrete pavements and structures | |
| CN204064817U (en) | A kind of easy vegetation root system tensile test apparatus | |
| Luo et al. | Experimental Study on Anchoring Behavior of Non-Persistent Jointed Rock Mass. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |