CN203688121U - Device for measuring soil body lateral stress - Google Patents
Device for measuring soil body lateral stress Download PDFInfo
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- CN203688121U CN203688121U CN201320880835.1U CN201320880835U CN203688121U CN 203688121 U CN203688121 U CN 203688121U CN 201320880835 U CN201320880835 U CN 201320880835U CN 203688121 U CN203688121 U CN 203688121U
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Abstract
A device for measuring soil body lateral stress includes a cylinder body, a cooling system, a temperature measuring system and a force measuring system. A semi-open tube body is integrated by a hexagon bolt as a whole; a steel wall is internally provided with an insulation sandwich layer and a seal cavity; the cooling system cools down the tube body by a circulating coolant, so as to freeze the soil body; the temperature measuring system is composed of a K type needle-shape thermocouple which is buried in the soil body and an external data acquisition instrument, and is used to measure the actual temperature of the soil body in a real-time manner; the force measuring system includes a threaded dowel bar, a pressure box, a bolt, a bearing steel wall, and the data acquisition instrument; the dowel bar is inserted into a preformed hole of a steel tube; a support nut is used to adjust an insertion depth; the bearing steel wall is provided with a threaded screw hole, and the bolt is installed therein; the bolt is turned to adjust the distance between a screw rod and a tail-end steel sheet of the dowel bar; the pressure box is fixed between the screw rod and the tail-end steel sheet of the dowel bar; the pressure box and the data acquisition instrument are connected so as to read the pressure value; and the parts, according to the above requirements, are assembled before the experiment starts.
Description
Technical field
The utility model relates to a kind of device of measuring soil body lateral stress, especially a kind of device of the lateral stress that is suitable for the measurement of Frost heave of frozen soil power.
Background technology
At present, in to the research of soil body lateral stress, find, lack the method for Measurement accuracy soil body lateral stress.Liquid control soil body lateral shift for conventional method of testing, measures fluid pressure by hydraulic pressure transducer, is soil body lateral pressure.And in actual liquid, inevitably exist a certain amount of gas, gas to have certain compressibility and to vary with temperature volume change obvious, cause truly recording soil body lateral stress.
Summary of the invention
The purpose of this utility model is the weak point overcoming in prior art, in order accurately to record soil body lateral stress, provide a kind of simple to operate, with low cost, applicability strong, measure the device of measuring accurately soil body lateral stress.
For achieving the above object, the device of measurement soil body lateral stress of the present utility model, comprise by two semi-open type cylindrical shells and fasten and be integrated cylindrical shell, the outer wall of cylindrical shell is provided with heat-insulation layer, two semi-open type barrel walls are provided with the cryostat backflow cabin being interconnected, two semi-open type barrel wall middle parts are respectively equipped with upper-lower position and relatively lean the stainless steel transmission rod on semi-open type cylinder inboard wall, the outer end of stainless steel transmission rod is provided with pressure cell, two semi-open type barrel wall middle parts are respectively equipped with symmetrical fixed support, fixed support is provided with the bolt of fixation pressure box, on described fixation pressure box, be connected with data collecting instrument, on two described semi-open type barrel walls, be respectively equipped with force transmission hole, import and export at cold night and multiple thermocouple wires hole, import and export cold night and be connected with sub-cooled ebullator respectively through external circulation line, in cylindrical shell, be provided with K type pin type thermopair, K type pin type thermopair is connected with data collecting instrument through thermopair connecting line.
Between described two semi-open type cylindrical shell buckling surfaces, be provided with identical shoulder mutually, its end face is provided with the web joint being bolted together; Described fixed support comprises that symmetry is located at the web joint of cylindrical shell top and the bottom, is located between web joint through the fixing riser of bolt.
Beneficial effect: the utility model connects into entirety by semi-open type cylindrical shell by hex bolts, has heat-insulation layer interlayer and seal chamber in steel wall, experiment soil sample is equipped with in steel cylinder inside, is placed under fixed fixed, lower the temperature to refrigerating fluid by sub-cooled ebullator, external circulation line sub-cooled ebullator, and form loop by the external circulating device circularly cooling liquid of self by steel pars intramuralis pressurized capsule, the soil body is freezed, contact with soil body surface by K type pin type thermopair, data collecting instrument, temperature sensor again, measure in real time soil body actual temperature, screwed stainless steel transmission rod, pressure cell, hex bolts, load steel wall, data collecting instrument, wherein transmission rod inserts on steel cylinder in preformed hole, regulate insertion depth by supporting nut, load steel wall is connected to form an entirety by hex bolts and steel cylinder stack shell, on load steel wall, have band silk screw, hex bolts is arranged on wherein, on the screw rod of inner side, CARBURIZING FURNACE FOR STAINLESS FASTENER is housed, carry out the distance between adjusting screw(rod) and stainless steel transmission rod afterbody steel disc by swivel bolt, thereby pressure cell is fixed between the two, pressure cell is connected with data collecting instrument, read pressure value, this apparatus structure is simple, convenient and practical, cost is lower, strong adaptability, can under full side limit condition, measure soil body lateral stress.In experiment can in, by data acquisition real-time data collection, convenient, accurately.This device not only can be measured the variation of soil body lateral stress in consolidation process, can Real-Time Monitoring soil temperature and the variation of soil body lateral stress.And the size that can test soil body lateral stress in soil sample freezing process.Measurement data is easy to preserve, and is connected can be directly used for analyzing with computer.
Brief description of the drawings
Fig. 1 is structure vertical view of the present utility model.
Fig. 2 is the positive facade structural drawing of the semi-open type tube structure of Fig. 1.
Fig. 3 is half-open structural drawing of semi-open type cylindrical shell stack shell in Fig. 2.
Fig. 4 is the A-A face sectional view of Fig. 1.
Fig. 5 is the B-B face sectional view of Fig. 1.
In figure: 1-cylindrical shell, 2-heat-insulation layer, 3-pressure cell, 4-stainless steel transmission rod, 5-data collecting instrument, 6-cryostat backflow cabin, 7-bolt, 8-bolt, 9-electric wire, import and export 10-cold night, 11-fixed support, 12-thermocouple wire hole, 13-bolt, 14-external circulation line, 15-support nut, 16-O-ring seal, 17-sub-cooled ebullator, 18-thermopair connecting line, 19-K type pin type thermopair, 20-force transmission hole, 21-O RunddichtringO.
Embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
The device of measurement soil body lateral stress of the present utility model, is mainly made up of cylindrical shell 1, freezing system, temp measuring system and dynamometric system four parts.Described cylindrical shell 1 is fastened and is integrated by two semi-open type cylindrical shells, is provided with identical shoulder mutually between two semi-open type cylindrical shell buckling surfaces, and its end face is provided with the web joint being fixed together by bolt 13.The outer wall of cylindrical shell 1 is provided with heat-insulation layer 2, and heat-insulation layer 2 is wrapped in cylindrical shell 1 mould skin, plays insulation; Two semi-open type barrel walls are provided with the cryostat backflow cabin 6 being interconnected, used for cryostat circulation, locate at half-open, around circulating tank, set up O-ring seal 16, once semi-open type cylindrical shell connects, can prevent that cryostat liquid from spilling, on barrel, open thermometer hole and force transmission hole simultaneously, when experiment, in force transmission hole, insert stainless steel transmission rod 4, in hole through oil lubrication with reduce friction force, stainless steel is near the local mounting O-shaped O-ring seal 21 of the soil body, and to prevent water loss in the soil body, thermometer hole penetrates temperature sensor 19; Two semi-open type barrel wall middle parts are respectively equipped with upper-lower position and relatively lean the stainless steel transmission rod 4 on semi-open type cylinder inboard wall, the outer end of stainless steel transmission rod 4 is provided with pressure cell 3, two semi-open type barrel wall middle parts are respectively equipped with symmetrical fixed support 11, and fixed support 11 comprises that symmetry is located at the web joint of cylindrical shell 1 top and the bottom, is located between web joint through the fixing riser of bolt 8.Fixed support 11 is provided with the bolt 7 of fixation pressure box 3, on described fixation pressure box 3, is connected with data collecting instrument 5; Sub-cooled ebullator 17 is connected with seal chamber in barrel wall by external circulation line 14, form loop, by circulation cryogenic liquid, the soil body is freezed, on two described semi-open type barrel walls, be respectively equipped with force transmission hole 20, cold night and import and export 10 and multiple thermocouple wires hole 12, importing and exporting 10 cold night is connected with sub-cooled ebullator 17 respectively through external circulation line 14, in cylindrical shell 1, be provided with K type pin type thermopair 19, K type pin type thermopair 19 is connected with data collecting instrument 5 through thermopair connecting line 18.Freezing system comprises sub-cooled ebullator, external circulation line and heat-insulation layer, temp measuring system comprises K type pin type thermopair 19, thermocouple wire 18, data collecting instrument 5, K type pin type thermopair 19 inserts in steel cylinder, aperture by thermocouple wire 18 on barrel is connected with data collecting instrument 5, and the temperature of soil sample in the real time measure bucket, for regulating cryostat temperature reference, dynamometric system comprises stainless steel transmission rod 4, pressure cell 3, bolt 7, data collecting instrument 20, electric wire 9 and fixed support 11 form, transmission rod inserts in barrel 1 pre-drilled cavity, inside will just coincide with steel cylinder 1 inwall, eliminate stress and intensively disturb, stainless steel transmission rod 4 outer setting regulate and support nut 15, regulate transmission rod to stretch into the yardstick in steel wall, the position punching of aiming at circular steel disc center on the fixed support 11 in outside turns silk, erection bolt 7 simultaneously, the head of bolt is through polishing processing, by adjusting bolt 7, pressure cell 3 is fixed between bolt 7 and the large flat cap of stainless steel transmission rod 4 rear ends.Pressure cell 3 is connected with data collecting instrument 20 by electric wire 9, can directly read temperature and the lateral pressure of experiment soil sample by data collecting instrument.
Claims (3)
1. measure the device of soil body lateral stress for one kind, it is characterized in that: it comprises by two semi-open type cylindrical shells and fastens and be integrated cylindrical shell (1), the outer wall of cylindrical shell (1) is provided with heat-insulation layer (2), two semi-open type barrel walls are provided with the cryostat backflow cabin (6) being interconnected, two semi-open type barrel wall middle parts are respectively equipped with upper-lower position and relatively lean the stainless steel transmission rod (4) on semi-open type cylinder inboard wall, the outer end of stainless steel transmission rod (4) is provided with pressure cell (3), two semi-open type barrel wall middle parts are respectively equipped with symmetrical fixed support (11), fixed support (11) is provided with the bolt (7) of fixation pressure box (3), on described fixation pressure box (3), be connected with data collecting instrument (5), on two described semi-open type barrel walls, be respectively equipped with force transmission hole (20), import and export at cold night (10) and multiple thermocouple wires hole (12), importing and exporting (10) cold night is connected with sub-cooled ebullator (17) respectively through external circulation line (14), in cylindrical shell (1), be provided with K type pin type thermopair (19), K type pin type thermopair (19) is connected with data collecting instrument (5) through thermopair connecting line (18).
2. the device of measurement soil body lateral stress according to claim 1, is characterized in that: between described two semi-open type cylindrical shell buckling surfaces, be provided with identical shoulder mutually, its end face is provided with the web joint being fixed together by bolt (13).
3. the device of measurement soil body lateral stress according to claim 1, is characterized in that: described fixed support (11) comprises that symmetry is located at the web joint of cylindrical shell (1) top and the bottom, is located between web joint through the fixing riser of bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320880835.1U CN203688121U (en) | 2013-12-30 | 2013-12-30 | Device for measuring soil body lateral stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320880835.1U CN203688121U (en) | 2013-12-30 | 2013-12-30 | Device for measuring soil body lateral stress |
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| Publication Number | Publication Date |
|---|---|
| CN203688121U true CN203688121U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320880835.1U Expired - Fee Related CN203688121U (en) | 2013-12-30 | 2013-12-30 | Device for measuring soil body lateral stress |
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| CN (1) | CN203688121U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316670A (en) * | 2014-09-26 | 2015-01-28 | 三峡大学 | Clay shrinkage stress measuring instrument and experimental method |
| CN105841869A (en) * | 2016-06-12 | 2016-08-10 | 哈尔滨工程大学 | Wave glider floating body stress monitoring device and stress calculation method thereof |
| CN106970203A (en) * | 2017-05-05 | 2017-07-21 | 沈阳建筑大学 | A kind of self-balancing body frost heaving experimental rig and its test method |
| CN107271088A (en) * | 2017-06-13 | 2017-10-20 | 上海交通大学 | Cylinder lateral pressure is tested in pourable medium model test apparatus and method |
| CN109254029A (en) * | 2018-11-13 | 2019-01-22 | 天津城建大学 | A kind of positive Frost heave of frozen soil force test system and its measurement method |
| CN109883591A (en) * | 2019-03-06 | 2019-06-14 | 西南科技大学 | A kind of static measuring device and measurement method |
-
2013
- 2013-12-30 CN CN201320880835.1U patent/CN203688121U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316670A (en) * | 2014-09-26 | 2015-01-28 | 三峡大学 | Clay shrinkage stress measuring instrument and experimental method |
| CN104316670B (en) * | 2014-09-26 | 2016-08-24 | 三峡大学 | Clay shrinkage stress measuring instrument and experimental technique |
| CN105841869A (en) * | 2016-06-12 | 2016-08-10 | 哈尔滨工程大学 | Wave glider floating body stress monitoring device and stress calculation method thereof |
| CN106970203A (en) * | 2017-05-05 | 2017-07-21 | 沈阳建筑大学 | A kind of self-balancing body frost heaving experimental rig and its test method |
| CN107271088A (en) * | 2017-06-13 | 2017-10-20 | 上海交通大学 | Cylinder lateral pressure is tested in pourable medium model test apparatus and method |
| CN107271088B (en) * | 2017-06-13 | 2019-09-06 | 上海交通大学 | The model test apparatus and method that cylinder lateral pressure is tested in pourable medium |
| CN109254029A (en) * | 2018-11-13 | 2019-01-22 | 天津城建大学 | A kind of positive Frost heave of frozen soil force test system and its measurement method |
| CN109883591A (en) * | 2019-03-06 | 2019-06-14 | 西南科技大学 | A kind of static measuring device and measurement method |
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Legal Events
| 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 |
Granted publication date: 20140702 Termination date: 20141230 |
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| EXPY | Termination of patent right or utility model |