CN103469832B - A kind of foundation pit frozen soil test chamber - Google Patents
A kind of foundation pit frozen soil test chamber Download PDFInfo
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- CN103469832B CN103469832B CN201310438902.9A CN201310438902A CN103469832B CN 103469832 B CN103469832 B CN 103469832B CN 201310438902 A CN201310438902 A CN 201310438902A CN 103469832 B CN103469832 B CN 103469832B
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Abstract
The present invention discloses a kind of foundation pit frozen soil test chamber, comprises housing, inner bag, and housing is other arranges compressor unit, and be insulation layer between described housing, inner bag, the insulation layer at described housing rear portion arranges air delivery duct and air door; Described inner bag, built with the soil of test, arranges simulation foundation ditch in inner bag as required, is provided with stake and anchor pole and girder steel in foundation ditch.Fiber optics ess-strain inductor is provided with in described stake and anchor pole.Advantage of the present invention is: level and the vertical stress strain stress relation that can test frozen soil layer under different temperatures, damp condition.
Description
Technical field
The present invention relates to experimental facilities, is a kind of frozen soil test chamber specifically.
Background technology
In the foundation ditch and Slope Design of building trade, should consider that winter cold climate is on the impact of building foundation pit and side slope, this is because, along with the change of temperature, water in foundation ditch and side slope soil produces capillary water displacement under the impact of low temperature, thus can increase the frost-heave force of the free face of foundation ditch and side slope, and then produce ess-strain and displacement.If have ignored the impact of this ess-strain and displacement, the lighter such as to crack at the defect, heavy then affect the safety of foundation ditch and side slope.Foundation ditch and slope collapse can be caused time serious, cause huge property loss.Therefore, temperature environment should be summarized by experiment on the impact of building.In prior art, Chinese Patent Application No. 2012204079748, it is a kind of for the experimental facilities of frozen soil to Influence To Soil that name is called that " a kind of experimental facilities for artificial ice wall " discloses, comprise: the inner side of artificial ice wall is provided with steel concrete inwall, arranged outside has steel concrete outer wall; The inner side of steel concrete inwall is provided with the first warming plate, and the arranged outside of steel concrete outer wall has the second warming plate; Between steel concrete inwall and steel concrete outer wall, be provided with refrigerator pipes, refrigerator pipes is connected with refrigeration machine; Be provided with temperature pick up and earth pressure cell within the walls at Artificial Frozen Soil, temperature pick up and earth pressure cell Real-Time Monitoring also show temperature and the variation of stress of artificial ice wall.Utilize be embedded in Artificial Frozen Soil temperature pick up within the walls and earth pressure cell can the temperature of Real-Time Monitoring artificial ice wall and variation of stress.An equilibrium valve can be found in the parameters such as stress levels, deformation extent, design strength and shear strength by this experimental facilities, make artificial ice wall can meet needs in practical application.The shortcoming of this patent is: because pressure cell (i.e. the ess-strain inductor of this patent) is arranged on the edge of artificial ice wall, does not consider the impact of stake on frozen soil layer, therefore be not suitable for the ground having stake; In addition, the artificial ice wall residing for this pressure cell is filled with between inside and outside concrete wall, can not measure unidirectional stress.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of compliance widely, can measure the frozen soil wall experimental facilities of different directions stress, concrete scheme is as follows:
A kind of foundation pit frozen soil test chamber, comprises housing, inner bag, and housing is other arranges compressor unit, it is characterized in that: be insulation layer between described housing, inner bag, the insulation layer at described housing rear portion arranges air channel and air door; Described inner bag, built with the soil of test, arranges simulation foundation ditch, and is provided with stake and anchor pole in foundation ditch surrounding, described stake and anchor pole arrange ess-strain inductor in inner bag.
Described stake and anchor pole are multiple, are parallel to casing and are arranged in chamber.
Described stake and anchor pole both sides are with ess-strain inductor, and the side of stake and anchor pole is embedded in opposite side in soil and is exposed in cold air.The object so done is simulation foundation ditch, so that consistent with true foundation ditch.
Described stake and anchor pole arrange multiple ess-strain inductor.
In described chamber, air channel also arranges water tank, and described water tank arranges openable lid, arranges humidity sensor in described chamber.
Chamber according to claim 1, is characterized in that: the ess-strain inductor of described stake and anchor pole is imbedded in the soil of experiment with lower portion.
Advantage of the present invention is: the stress-strain relation can testing frozen soil layer under different temperatures, damp condition; The stress-strain relation of different directions can be measured.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
The position view of stake when Fig. 2 is the stress-strain relation of experiment different directions;
In figure, 1 is compressor unit, and 2 is air channel, and 3 is chamber roof door, and 4 is inner bag, and 5 is chamber door, and 6 is insulation layer, and 7 is stake and anchor pole, and 8 is ess-strain inductor, and 9 is base, and 10 is soil, and 11 is air door.
Detailed description of the invention
Illustrate the present invention below in conjunction with accompanying drawing, as shown in Figure 1, the present invention includes housing, inner bag 4, housing is other arranges compressor unit 1, is insulation layer 6, arranges air channel 2 and air door 11 in the insulation layer at described housing rear portion between described housing, inner bag 4; Described inner bag 4, built with the soil 10 of test, arranges stake and anchor pole 7 near chamber door place in inner bag 4, described stake and anchor pole 7 arranges ess-strain inductor 8.
For ensureing that experimental error is less, described stake and anchor pole 7 are multiple, are parallel to chamber door 5 and are arranged in chamber; Described stake and anchor pole 7 arrange multiple ess-strain inductor 8.
When needing the ess-strain measuring above-below direction, can adopt the method shown in Fig. 2, the ess-strain inductor 8 of described stake and anchor pole 7 is imbedded in the soil 10 of experiment with lower portion; The moving direction of soil is consistent to all directions, so just can measure ess-strain and the displacement of supporting and protection structure.
For increasing humidity, in described chamber, air channel also arranges water tank, and described water tank arranges openable lid, arranges humidity sensor for humidity control in described chamber.
Claims (4)
1. a foundation pit frozen soil test chamber, comprises housing, inner bag, and housing is other arranges compressor unit, it is characterized in that: be insulation layer between described housing, inner bag, the insulation layer at described housing rear portion arranges air channel and air door; Described inner bag, built with the soil of test, arranges simulation foundation ditch, and is provided with stake and anchor pole in foundation ditch surrounding, described stake and anchor pole arrange ess-strain inductor in inner bag;
Described stake and anchor pole are multiple, are parallel to casing and are arranged in chamber;
Described stake and anchor pole both sides are with ess-strain inductor, and the side of stake and anchor pole is embedded in opposite side in soil and is exposed in cold air.
2. chamber according to claim 1, is characterized in that: described stake and anchor pole arrange multiple ess-strain inductor.
3. chamber according to claim 1, is characterized in that: in described chamber, air channel also arranges water tank, and described water tank arranges openable lid, arranges humidity sensor in described chamber.
4. chamber according to claim 1, is characterized in that: the ess-strain inductor of described stake and anchor pole is imbedded in the soil of experiment with lower portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310438902.9A CN103469832B (en) | 2013-09-24 | 2013-09-24 | A kind of foundation pit frozen soil test chamber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310438902.9A CN103469832B (en) | 2013-09-24 | 2013-09-24 | A kind of foundation pit frozen soil test chamber |
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| CN103469832A CN103469832A (en) | 2013-12-25 |
| CN103469832B true CN103469832B (en) | 2015-09-16 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109403393A (en) * | 2018-11-12 | 2019-03-01 | 北京交通大学 | Simulate pile body stress and the experimental rig of durability monitoring under friction pile use environment |
| CN111312052B (en) * | 2020-04-02 | 2023-09-15 | 中国矿业大学(北京) | Experimental platform and experimental method for simulating mining rock stratum movement |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435717A (en) * | 2011-09-21 | 2012-05-02 | 南京林业大学 | Soil frost-heaving and thawing-settlement tester based on thermoelectric refrigeration control |
| CN102864793A (en) * | 2012-06-15 | 2013-01-09 | 中国科学院寒区旱区环境与工程研究所 | Test device for simulating permafrost region well heat insulation or heating |
| CN202745088U (en) * | 2012-08-16 | 2013-02-20 | 中国建筑第六工程局有限公司 | Experimental equipment for manual frozen earth wall |
| CN103061361A (en) * | 2013-01-07 | 2013-04-24 | 中国建筑第六工程局有限公司 | Device for testing side wall adfreezing force of piles in frozen earth areas and application method thereof |
| CN202925574U (en) * | 2012-10-24 | 2013-05-08 | 中国建筑第六工程局有限公司 | Pile-side negative friction testing device in frozen earth area |
| CN203498878U (en) * | 2013-09-24 | 2014-03-26 | 中国建筑东北设计研究院有限公司 | Ground pit frozen soil test box |
-
2013
- 2013-09-24 CN CN201310438902.9A patent/CN103469832B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435717A (en) * | 2011-09-21 | 2012-05-02 | 南京林业大学 | Soil frost-heaving and thawing-settlement tester based on thermoelectric refrigeration control |
| CN102864793A (en) * | 2012-06-15 | 2013-01-09 | 中国科学院寒区旱区环境与工程研究所 | Test device for simulating permafrost region well heat insulation or heating |
| CN202745088U (en) * | 2012-08-16 | 2013-02-20 | 中国建筑第六工程局有限公司 | Experimental equipment for manual frozen earth wall |
| CN202925574U (en) * | 2012-10-24 | 2013-05-08 | 中国建筑第六工程局有限公司 | Pile-side negative friction testing device in frozen earth area |
| CN103061361A (en) * | 2013-01-07 | 2013-04-24 | 中国建筑第六工程局有限公司 | Device for testing side wall adfreezing force of piles in frozen earth areas and application method thereof |
| CN203498878U (en) * | 2013-09-24 | 2014-03-26 | 中国建筑东北设计研究院有限公司 | Ground pit frozen soil test box |
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| CN103469832A (en) | 2013-12-25 |
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Effective date of registration: 20200728 Address after: Room 332, Room 5-8 Xincai Street, Hunnan New District, Shenyang City, Liaoning Province Patentee after: ZHONGJIAN DONGSHE ROCK AND SOIL ENGINEERING Co.,Ltd. Address before: 110006 65 glorious Street, Heping District, Liaoning, Shenyang Patentee before: CHINA NORTHEAST ARCHITECTURAL DESIGN AND RESEARCH INSTITUTE Co.,Ltd. |
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