SU1325359A1 - Method of shearing test of soil - Google Patents
Method of shearing test of soil Download PDFInfo
- Publication number
- SU1325359A1 SU1325359A1 SU854037455A SU4037455A SU1325359A1 SU 1325359 A1 SU1325359 A1 SU 1325359A1 SU 854037455 A SU854037455 A SU 854037455A SU 4037455 A SU4037455 A SU 4037455A SU 1325359 A1 SU1325359 A1 SU 1325359A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sample
- soil
- elastic shell
- pressure
- depth
- Prior art date
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Изобретение относитс к технологии исследовани свойств грунтов при и нженерно-геологических изыскани х дл строительства. С целью расширени области применени и повышени точности измерени образец грунта герметизируют посредством эластичной оболочки , прикладывают вертикальное давление , внутри эластичной оболочки создают посто нное отрицательное давление , равное природному, на глубине отбора образца, и производ т срез грунта. Создание отрицательного давлени под эластичной оболочкой позвол ет имитировать реакцию массива грунта на глубине отбора исследуемого образца. 1 ил.This invention relates to a technology for studying the properties of soils during engineering and geological surveys for construction. In order to expand the field of application and increase the accuracy of the measurement, the soil sample is sealed by means of an elastic shell, vertical pressure is applied, a constant negative pressure, equal to natural pressure, is created inside the elastic shell at a depth of sampling, and the soil is cut. Creating a negative pressure under the elastic shell allows to simulate the response of the soil mass at the depth of sampling of the sample under study. 1 il.
Description
Изобретение относитс к технологии исследовани свойств грунтов при инженерно-геологических изыскани х дл строительства.This invention relates to a technology for studying the properties of soils in engineering geological surveys for construction.
Цель изобретени - расширение области применени и повышени точности измерени .The purpose of the invention is to expand the scope and improve measurement accuracy.
На чертеже показано устройство дл реализации предлагаемого способаThe drawing shows a device for implementing the proposed method
Устройство в сборе состоит из верхнего и нижнего колец среэывате- л 1, внутри которого помещен образец грунта .2, закреплентай в эластичную оболочку 3. Кра оболочки забраны между пластинами верхнего 4 и нижнего 5 штампов, соединенными между собой винтами 6. К верхнему штампу подведена трубка 7 вакуумного насоса.The device assembly consists of the upper and lower rings of the resistor 1, inside which the soil sample .2 is placed, secured in an elastic shell 3. The edge of the shell is taken between the plates of the upper 4 and lower 5 stamps, interconnected with screws 6. tube 7 of the vacuum pump.
Способ осуществл ют следующим образом .The method is carried out as follows.
Подготовленный образец грунта 2 герметизируют, заключа его в эластичную оболочку 3 и помещают в кольца срезывател 1. Между кольцами создают зазор, после чего к образцу прикпадьгоают вертикальное давление. Затем из-под оболочки 3 начинают откачивать воздух, создава в образце нужное разрежение, и производ т испытание на сдвиг. Отрицательное давление задают равным природйому давлению на глубине отбора грунта и поддерживают посто нным в ходе испытани . Затем производ т сдвиг грунта. Учет усилий, употребл емых на раст жение эластичной оболочки, производ т по данным тарировочньпс испытаний Создание отрицательного давлени под эластичной оболочкой позвол ет использовать атмосферное давление на боковую поверхность образца дл имиThe prepared soil sample 2 is sealed, enclosed in an elastic sheath 3, and cutter 1 is placed in the rings. A gap is created between the rings, after which vertical pressure is applied to the sample. Then, air is pumped out from under the shell 3, creating the necessary vacuum in the sample, and a shear test is performed. The negative pressure is set equal to the natural pressure at the depth of the soil sampling and is kept constant during the test. Then the ground is displaced. Consideration of the forces used to stretch the elastic shell is made according to calibration tests. Creating a negative pressure under the elastic shell allows the atmospheric pressure on the lateral surface of the sample to be used for them.
5five
00
5five
00
5five
00
тации реакции массива на глубине отбора грунта.tatsii reaction array at a depth of soil selection.
1one
Пример. Испытывают образец песка с объемш тм весом 1,55 г/см, отобранный с глубины 3 м. Природное вертикальное давление от собственного веса вышележащих пород на этой глубине равно 6, 0,465 кгс/см. Боковое давление на этой глубине равно ж,у- j где - коэффициент бокового распора, дл песков равный 0,42. djjy 0,2 кгс/см. При испытании на ср ез создают под эластичной оболочкой разрежение (отрицательное давление), равное 0,20 кгс/см . С этой же силой атмосферное давление воздействует на боковую поверхность образца, имитиру реакцию массива на глубине отбора образца грунта.Example. A sample of sand with a volume of 1.55 g / cm, taken from a depth of 3 m, is tested. The natural vertical pressure of its own weight of the overlying rocks at this depth is 6, 0.465 kgf / cm. The lateral pressure at this depth is equal to g, у- j where is the coefficient of lateral expansion, for sands, equal to 0.42. djjy 0.2 kgf / cm. When tested for medication, a vacuum (negative pressure) of 0.20 kgf / cm is created under the elastic sheath. With the same force, the atmospheric pressure acts on the lateral surface of the sample, simulating the response of the array at the depth of the soil sample.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU854037455A SU1325359A1 (en) | 1985-12-27 | 1985-12-27 | Method of shearing test of soil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU854037455A SU1325359A1 (en) | 1985-12-27 | 1985-12-27 | Method of shearing test of soil |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1325359A1 true SU1325359A1 (en) | 1987-07-23 |
Family
ID=21226555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU854037455A SU1325359A1 (en) | 1985-12-27 | 1985-12-27 | Method of shearing test of soil |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1325359A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104406755A (en) * | 2014-12-11 | 2015-03-11 | 河南工业大学 | Laminar vibrating shear soil box testing apparatus |
CN110208114A (en) * | 2019-06-25 | 2019-09-06 | 中国矿业大学 | It is a kind of for simulating the interface dynamic simple shear test device and method of dynamic contact problem |
-
1985
- 1985-12-27 SU SU854037455A patent/SU1325359A1/en active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104406755A (en) * | 2014-12-11 | 2015-03-11 | 河南工业大学 | Laminar vibrating shear soil box testing apparatus |
CN110208114A (en) * | 2019-06-25 | 2019-09-06 | 中国矿业大学 | It is a kind of for simulating the interface dynamic simple shear test device and method of dynamic contact problem |
CN110208114B (en) * | 2019-06-25 | 2024-02-27 | 中国矿业大学 | Interface vibration single shear test device and method for simulating power contact problem |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4579003A (en) | Instrument for testing earthen samples under triaxial load conditions | |
Lade et al. | The concept of effective stress for soil, concrete and rock | |
CN106638725B (en) | A kind of pile pile soil compaction effect test device and method | |
ES8407147A1 (en) | Method and apparatus for investigating stand-off in a borehole. | |
SU1325359A1 (en) | Method of shearing test of soil | |
Suri et al. | Stress-dependent permeability measurement using the oscillating pulse technique | |
US3924451A (en) | Resonant column testing apparatus | |
Takkabutr | Experimental investigations on small-strain stiffness properties of partially saturated soils via resonant column and bender element testing | |
Nieuwland et al. | In-situ stress measurements in model experiments of tectonic faulting | |
Sundaram et al. | Precursory and coseismic water-pressure variations in stick-slip experiments | |
Sargand et al. | Deformation behaviour of shales | |
Talesnick et al. | The preparation of hollow cylinder specimens from undisturbed tube samples of soft clay | |
SU1345094A1 (en) | Ground investigation device | |
Houas et al. | A new large cross-section shock tube for studies of turbulent mixing induced by interfacial hydrodynamic instability | |
SU552540A1 (en) | Device for determining soil shear characteristics | |
Shao | DYNAMIC INTERPRETATION OF DYNAFLECT, FALLING WEIGHT DEFLECTOMETER AND SPECTRAL ANALYSIS OF SURFACE WAVES TESTS ON PAVEMENT SYSTEM. | |
Lewis | The mechanical properties of mine rocks and a standardized test procedure for their determination | |
Chian et al. | Development of a window laminar strong box | |
SU657315A1 (en) | Soil investigating method | |
SU1079750A1 (en) | Method of monitoring shear resistance of soil and loose materials | |
Chryssanthakis et al. | High Temperature Triaxial Tests With Ultrasonic Measurementson Ekofisk Chalk | |
Bonner et al. | Compressional and shear wave velocities for artificial granular media under simulated near surface conditions | |
SU597775A1 (en) | Working member of device for shear testing of soil | |
SU924241A1 (en) | Device for consolidation and rheology investigations of water-saturated rocks | |
Miura et al. | Sample preparation method and its effect on static and cyclic deformation—strength properties of sand: Soils Found, V22, N1, March 1982, P61–77 |