CN103306254A - Probe for testing lateral load of deep soil - Google Patents
Probe for testing lateral load of deep soil Download PDFInfo
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- CN103306254A CN103306254A CN2013102281024A CN201310228102A CN103306254A CN 103306254 A CN103306254 A CN 103306254A CN 2013102281024 A CN2013102281024 A CN 2013102281024A CN 201310228102 A CN201310228102 A CN 201310228102A CN 103306254 A CN103306254 A CN 103306254A
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- load plate
- rigid load
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- probe
- flat chisel
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a probe for testing a lateral load of deep soil, which comprises a flat shovel probe. A micro rigid load bearing plate is arranged in the flat shovel probe; limitation of the micro rigid load bearing plate in the flat shovel probe is implemented by a steel ring; the micro rigid load bearing plate is connected with one end of a spring and the other end of the spring is connected with the flat shovel probe; a micro displacement sensor is fixedly arranged in the flat shovel probe; and the micro displacement sensor is used for continuously measuring the displacement of the micro rigid load bearing plate. The probe for testing the lateral load of the deep soil carries out field lateral load testing on the geotechnical engineering testing deep soil, can replace a conventional flat shovel lateral expansion test and is used for measuring a horizontal bearing force, a modulus of deformation, a static lateral pressure coefficient, a horizontal bedding coefficient and the like of the deep soil.
Description
Technical field
The present invention relates to a kind of test probe, be specifically related to a kind of deep soil side and pop one's head in to loading test.
Background technology
The parameters such as deep layer soil body horizontal bearing capacity, modulus of deformation, Stationary side pressure coefficient, the Frequency Spectra at Lateral are the parameter that must provide in tunnel, subway engineering.Flat Dilatometer Test is the home position testing method of a kind of advanced person in the geotechnical engineering.At the end of the seventies in last century, Italian professor Marchetti proposes the principle of Flat Dilatometer Test first, and provides plant and instrument, test method, Geotechnical Parameter analysis and engineering thereof to use.That flat chisel test has is simple to operation, good reproducibility, reliability is high and the economic dispatch characteristics.On West Europe and North America and other places, Flat Dilatometer Test and cone penetration test become topmost two kinds of means in the in-situ test together.
But the Flat Dilatometer Test lateral deformation can only be measured 0.05mm and two shift values of 1.10mm, is assumed to be in theory the straightway of static loading test, and therefore existing on-the-spot test method can't meet the demands.
Summary of the invention
Technical problem to be solved by this invention provides a kind of deep soil side and pops one's head in to loading test, and it can avoid the arching of the soil body, reduces the disturbing influence to the soil body.
For solving the problems of the technologies described above, deep soil of the present invention side to the technical solution of loading test probe is:
Comprise flat chisel probe 7, the front of flat chisel probe 7 offers an installing hole, is provided with miniature rigid load plate 6 in the installing hole; Miniature rigid load plate 6 is realized spacing in flat chisel probe 7 by steel ring 4; Miniature rigid load plate 6 is provided with the plectane of cavity for the bottom, the outer ring, top of miniature rigid load plate 6 is provided with groove; Steel ring 4 radially stretches into the groove of miniature rigid load plate 6, realizes the radial location of miniature rigid load plate 6; The thickness of steel ring 4 can move along the depth direction of groove miniature rigid load plate 6 less than the degree of depth of the groove of miniature rigid load plate 6; Form air intake duct 20 between miniature rigid load plate 6 and the flat chisel probe 7; Gases at high pressure enter the groove of miniature rigid load plate 6 by air intake duct 20, thereby make miniature rigid load plate 6 produce displacement with respect to flat chisel probe 7, make miniature rigid load plate 6 be pressed into soil layer; One end of miniature rigid load plate 6 linking springs 10, the other end of spring 10 connect flat chisel probe 7; Miniature displacement transducer 8 is fixedly installed in the flat chisel probe 7; Miniature displacement transducer 8 is used for the displacement of the miniature rigid load plate 6 of continuous measurement.
Described steel ring 4 is fixedly connected with flat chisel probe 7 by anchor screw 5.
The arranged outside of described miniature rigid load plate 6 has sealing ring 9, and sealing ring 9 can be with sealing between the side of miniature rigid load plate 6 and the flat chisel probe 7.
Described flat chisel probe 7 comprises a tabular plate, and an end of tabular plate is shank.
The maximum displacement of described miniature rigid load plate 6 is 3mm.
One end of described miniature displacement transducer 8 connecting test wires 3, test lead 3 is arranged in the conduit 2.
The cavity of described miniature rigid load plate 6 connects an end of conduit 2 and air inlet pipe 1, and the other end of conduit 2 and air inlet pipe 1 passes from the shank of flat chisel probe 7; Air inlet pipe 1 connects high-pressure nitrogen bottle.
The technique effect that the present invention can reach is:
The present invention improves the flat chisel probe under the condition that does not change tradition probe overall dimensions, at probe miniature rigid load plate is installed, increase miniature displacement transducer, the displacement of Loading Plate can be increased to 3mm, can measure 0.05mm, force value corresponding to 1.10mm displacement, finish traditional flat chisel test; Because probe appearance and size is consistent with traditional flat chisel probe, is convenient to utilize existing standard.
The present invention can measure atmospheric pressure value corresponding to 0～3.0mm scope Loading Plate displacement, draws the relation curve of Loading Plate displacement and force value, and s/b reaches 0.05, can access the complete p of lateral load test～s curve.
The present invention can be used in and measures deep layer soil body Stationary side pressure coefficient, horizontal foundation modulus, horizontal bearing capacity, modulus of deformation etc., makes the geotechnological parameter that records more extensive, realizes a kind of purpose that obtains many kinds of parameters of testing.
The present invention is directed to the geotechnical engineering test deep layer soil body and carry out on-the-spot lateral load test, can replace traditional flat chisel side account test, be used for measuring deep layer soil body horizontal bearing capacity, modulus of deformation, Stationary side pressure coefficient, horizontal foundation modulus etc.
Probe of the present invention is the tabular plate, can greatly avoid the arching of the soil body, reduces the disturbing influence to the soil body, and the good reproducibility of result of the test can obtain the stratigraphic section of nearly continuity.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments:
Fig. 1 is that deep soil of the present invention side is to the schematic diagram of loading test probe;
Fig. 2 is internal construction schematic diagram of the present invention;
Fig. 3 is sectional drawing of the present invention.
Description of reference numerals among the figure:
1 is air inlet pipe, and 2 is conduit,
3 is test lead, and 4 is steel ring,
5 is anchor screw, and 6 is miniature rigid load plate,
7 are the flat chisel probe, and 8 is miniature displacement transducer,
9 is sealing ring, and 10 is spring,
20 is air intake duct.
The specific embodiment
As shown in Figure 1 to Figure 3, pop one's head in to loading test in deep soil of the present invention side, comprises flat chisel probe 7, and flat chisel probe 7 comprises a tabular plate, and an end of tabular plate is shank;
The front of flat chisel probe 7 offers an installing hole, is provided with miniature rigid load plate 6 in the installing hole;
Miniature rigid load plate 6 is realized spacing in flat chisel probe 7 by steel ring 4; Steel ring 4 is fixedly connected with flat chisel probe 7 by anchor screw 5; The arranged outside of miniature rigid load plate 6 has sealing ring 9, and sealing ring 9 can be with sealing between the side of miniature rigid load plate 6 and the flat chisel probe 7;
Miniature rigid load plate 6 is provided with the plectane of cavity for the bottom, the outer ring, top of miniature rigid load plate 6 is provided with groove;
Steel ring 4 radially stretches into the groove of miniature rigid load plate 6, realizes the radial location of miniature rigid load plate 6; The thickness of steel ring 4 can move along the depth direction of groove miniature rigid load plate 6 less than the degree of depth of the groove of miniature rigid load plate 6; Form air intake duct 20 between miniature rigid load plate 6 and the flat chisel probe 7; Gases at high pressure enter the groove of miniature rigid load plate 6 by air intake duct 20, thereby make miniature rigid load plate 6 produce displacement with respect to flat chisel probe 7, make miniature rigid load plate 6 be pressed into soil layer; The maximum displacement of miniature rigid load plate 6 is 3mm;
Be provided with spring 10 in the cavity of miniature rigid load plate 6, an end of miniature rigid load plate 6 linking springs 10, the other end of spring 10 connect flat chisel probe 7; Miniature displacement transducer 8 is fixedly installed in the flat chisel probe 7; Miniature displacement transducer 8 is positioned at the below of miniature rigid load plate 6; Miniature displacement transducer 8 is used for the displacement of the miniature rigid load plate 6 of continuous measurement;
One end of miniature displacement transducer 8 connecting test wires 3, test lead 3 is arranged in the conduit 2;
The cavity of miniature rigid load plate 6 connects an end of conduit 2 and air inlet pipe 1, and the other end of conduit 2 and air inlet pipe 1 passes from the shank of flat chisel probe 7; Air inlet pipe 1 connects high-pressure nitrogen bottle.
The present invention is applicable to static cone penetration equipment with its injection soil body, and operation and maintenance is very simple and economical.
Claims (7)
1. pop one's head in to loading test in a deep soil side, comprises flat chisel probe (7), it is characterized in that: the front of described flat chisel probe (7) offers an installing hole, is provided with miniature rigid load plate (6) in the installing hole; Miniature rigid load plate (6) is realized spacing in flat chisel probe (7) by steel ring (4);
Miniature rigid load plate (6) is provided with the plectane of cavity for the bottom, the outer ring, top of miniature rigid load plate (6) is provided with groove;
Steel ring (4) radially stretches into the groove of miniature rigid load plate (6), realizes the radial location of miniature rigid load plate (6);
The thickness of steel ring (4) can move along the depth direction of groove miniature rigid load plate (6) less than the degree of depth of the groove of miniature rigid load plate (6); Form air intake duct (20) between miniature rigid load plate (6) and the flat chisel probe (7); Gases at high pressure enter the groove of miniature rigid load plate (6) by air intake duct (20), thereby make miniature rigid load plate (6) produce displacement with respect to flat chisel probe (7), make miniature rigid load plate (6) be pressed into soil layer;
One end of miniature rigid load plate (6) linking springs (10), the other end of spring (10) connects flat chisel probe (7); Miniature displacement transducer (8) is fixedly installed in the flat chisel probe (7); Miniature displacement transducer (8) is used for the displacement of the miniature rigid load plate of continuous measurement (6).
2. pop one's head in to loading test in deep soil according to claim 1 side, it is characterized in that: described steel ring (4) is fixedly connected with by anchor screw (5) and flat chisel probe (7).
3. pop one's head in to loading test in deep soil according to claim 1 side, it is characterized in that: the arranged outside of described miniature rigid load plate (6) has sealing ring (9), and sealing ring (9) can be with sealing between the side of miniature rigid load plate (6) and the flat chisel probe (7).
4. pop one's head in to loading test in deep soil according to claim 1 side, it is characterized in that: described flat chisel probe (7) comprises a tabular plate, and an end of tabular plate is shank.
5. pop one's head in to loading test in deep soil according to claim 1 side, and it is characterized in that: the maximum displacement of described miniature rigid load plate (6) is 3mm.
6. pop one's head in to loading test in deep soil according to claim 1 side, and it is characterized in that: an end of described miniature displacement transducer (8) connecting test wire (3), test lead (3) is arranged in the conduit (2).
7. pop one's head in to loading test in deep soil according to claim 6 side, it is characterized in that: the cavity of described miniature rigid load plate (6) connects an end of conduit (2) and air inlet pipe (1), and the other end of conduit (2) and air inlet pipe (1) passes from the shank of flat chisel probe (7); Air inlet pipe (1) connects high-pressure nitrogen bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310228102.4A CN103306254B (en) | 2013-06-08 | 2013-06-08 | Probe for testing lateral load of deep soil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310228102.4A CN103306254B (en) | 2013-06-08 | 2013-06-08 | Probe for testing lateral load of deep soil |
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| CN103306254A true CN103306254A (en) | 2013-09-18 |
| CN103306254B CN103306254B (en) | 2015-03-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526738A (en) * | 2013-10-31 | 2014-01-22 | 东南大学 | Flat dilatometer device for in-situ soil test |
| CN106702998A (en) * | 2016-11-21 | 2017-05-24 | 东南大学 | High-precision micro flat spade lateral expansion instrument |
| CN110595906A (en) * | 2019-09-04 | 2019-12-20 | 光大环境科技（中国）有限公司 | Material side pressure coefficient measuring device |
| CN115110509A (en) * | 2022-07-21 | 2022-09-27 | 上海旻悦勘察设计有限公司 | Deep soil body side direction load test probe |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4043186A (en) * | 1974-10-31 | 1977-08-23 | Silvano Marchetti | Flat expansible membranes arrangement to measure on location the module of deformability of terrains not requiring the execution of sounding perforations |
| JPH03189537A (en) * | 1989-12-12 | 1991-08-19 | Maccheti Silvano | Method and apparatus for original position test |
| CN101575847A (en) * | 2009-06-02 | 2009-11-11 | 中铁第四勘察设计院集团有限公司 | Effective stress spade |
| CN201598626U (en) * | 2010-02-01 | 2010-10-06 | 陈怀峰 | Special flat dilatometer |
| CN201600120U (en) * | 2010-01-08 | 2010-10-06 | 浙江大学 | Soil interior sedimentation measuring device |
| CN202899117U (en) * | 2012-10-30 | 2013-04-24 | 台州市建元工程勘察仪器有限公司 | Test head device special for flat spade diameter test device |
| CN203270541U (en) * | 2013-06-08 | 2013-11-06 | 温岭市迪信勘察仪器有限公司 | Lateral load test probe of deep soil body |
-
2013
- 2013-06-08 CN CN201310228102.4A patent/CN103306254B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4043186A (en) * | 1974-10-31 | 1977-08-23 | Silvano Marchetti | Flat expansible membranes arrangement to measure on location the module of deformability of terrains not requiring the execution of sounding perforations |
| JPH03189537A (en) * | 1989-12-12 | 1991-08-19 | Maccheti Silvano | Method and apparatus for original position test |
| CN101575847A (en) * | 2009-06-02 | 2009-11-11 | 中铁第四勘察设计院集团有限公司 | Effective stress spade |
| CN201600120U (en) * | 2010-01-08 | 2010-10-06 | 浙江大学 | Soil interior sedimentation measuring device |
| CN201598626U (en) * | 2010-02-01 | 2010-10-06 | 陈怀峰 | Special flat dilatometer |
| CN202899117U (en) * | 2012-10-30 | 2013-04-24 | 台州市建元工程勘察仪器有限公司 | Test head device special for flat spade diameter test device |
| CN203270541U (en) * | 2013-06-08 | 2013-11-06 | 温岭市迪信勘察仪器有限公司 | Lateral load test probe of deep soil body |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526738A (en) * | 2013-10-31 | 2014-01-22 | 东南大学 | Flat dilatometer device for in-situ soil test |
| CN106702998A (en) * | 2016-11-21 | 2017-05-24 | 东南大学 | High-precision micro flat spade lateral expansion instrument |
| CN110595906A (en) * | 2019-09-04 | 2019-12-20 | 光大环境科技（中国）有限公司 | Material side pressure coefficient measuring device |
| CN115110509A (en) * | 2022-07-21 | 2022-09-27 | 上海旻悦勘察设计有限公司 | Deep soil body side direction load test probe |
| CN115110509B (en) * | 2022-07-21 | 2023-09-19 | 上海旻悦勘察设计有限公司 | Deep soil lateral load test probe |
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| Publication number | Publication date |
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| CN103306254B (en) | 2015-03-11 |
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Address after: 317515 Guoqing Xincun 130, Chengnan Town, Wenling City, Taizhou City, Zhejiang Province Co-patentee after: Zhu Dinghua Patentee after: Taizhou Dixin Exploration Instrument Co., Ltd. Address before: 317515 Guoqing Xincun 130, Chengnan Town, Wenling City, Taizhou City, Zhejiang Province Co-patentee before: Zhu Dinghua Patentee before: Wenling Dixin Prospecting Instrument Co., Ltd. |
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Address after: 317515 No.1, Jingxing Road, Central Industrial Zone, Chengnan Town, Wenling City, Taizhou City, Zhejiang Province Patentee after: TAIZHOU DIXIN INVESTIGATION INSTRUMENTS Co.,Ltd. Patentee after: Zhu Dinghua Address before: 317515 Guoqing Xincun 130, Chengnan Town, Wenling City, Taizhou City, Zhejiang Province Patentee before: TAIZHOU DIXIN INVESTIGATION INSTRUMENTS Co.,Ltd. Patentee before: Zhu Dinghua |