CN102605757A - Device and method for in-situ test of embankment pile - Google Patents
Device and method for in-situ test of embankment pile Download PDFInfo
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- CN102605757A CN102605757A CN2012101039368A CN201210103936A CN102605757A CN 102605757 A CN102605757 A CN 102605757A CN 2012101039368 A CN2012101039368 A CN 2012101039368A CN 201210103936 A CN201210103936 A CN 201210103936A CN 102605757 A CN102605757 A CN 102605757A
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- embankment
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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Abstract
The invention discloses a device for in-situ test of an embankment pile, which comprises a load box fully filled with soil, a pile-soil differential settlement measuring device and a soil pressure measuring component. The pile-soil differential settlement measuring device is disposed in the filled soil in the load box and comprises a first settlement mark disposed on a cap of the pile and a second settlement mark disposed on the filled soil. The first settlement mark comprises a base plate, a vertical rod is fixedly disposed on the base plate, and a horizontal cantilever is disposed at the upper end of the vertical rod. The second settlement mark is in the same structure as the first settlement mark and opposite to the same. The soil pressure measuring component comprises a plurality of soil pressure boxes and a measurer. The soil pressure boxes are disposed at different positions on the filled soil respectively. The invention further provides a method for in-situ test of an embankment pile. The device and the method have the advantages of low cost, high efficiency, high precision and the like.
Description
Technical field
The present invention relates to the foundation settlement field of measuring technique, relate in particular to a kind of apparatus and method that are used for the embankment stake is carried out in-situ test.
Background technology
The embankment stake is as a kind of novel foundation treatment mode; Has the construction period weak point; Advantages such as sedimentation and lateral deformation are little, engineerings such as the various embankments that are particularly useful on soft foundation, building, dykes and dams have particularly obtained remarkable economical and time benefit in some road widenings.Yet the embankment stake Study on Technology time started is not long, still can not satisfy engineering request to its mechanism research.
At present, more about the Eccentric Loads in Layered Soils and Research of embankment stake, but laboratory test ambient conditions and field environmental condition difference are bigger, and simulation laboratory test can not be obtained satisfied achievement in research.At present, a large amount of long-term in situ tests need be carried out in this area, to carry out the mechanism research of embankment stake technology better.
Therefore, those skilled in the art is devoted to develop a kind of embankment stake in-situ testing device and method of convenient and swift, economical and practical, strong operability, to obtain the test result of degree of precision.
Summary of the invention
Because the above-mentioned defective of prior art, technical problem to be solved by this invention provides the embankment stake in-situ testing device that a kind of cost is low, precision is high.
For realizing above-mentioned purpose, the invention provides a kind of embankment stake in-situ testing device, measure assembly and form by being full of load box, the native relative settlement measurement mechanism of stake, the soil pressure of banketing; The native relative settlement measurement mechanism of said stake is arranged in the banketing of said load box; The native relative settlement measurement mechanism of said stake comprises first sedimentation mark on the cushion cap that is arranged on pile body and is arranged on second sedimentation mark on said the banketing; Said first sedimentation mark comprises and is set with vertical rod on the said substrate by substrate that the upper end of said vertical rod is provided with the cantilever of horizontal arrangement; Said second sedimentation mark is identical with said first sedimentation mark structure, is provided with in opposite directions; Said soil pressure force measurement component comprises a plurality of earth pressure cells and plate reading device; Said earth pressure cell is separately positioned on the said diverse location that bankets.
Preferably, said load box comprises column, scaffold and template.
Preferably, said vertical rod is connected and composed through bolt by plurality of sections of steel pipes.
Preferably, said cantilever is weldingly fixed on the said column.
Another technical problem to be solved by this invention provides a kind of embankment stake home position testing method of convenient and swift, economical and practical, strong operability.
For realizing above-mentioned purpose, the invention provides a kind of embankment stake home position testing method, may further comprise the steps:
Step 1 is installed said load box in the setting range around the embankment stake.Step 2 is installed the native relative settlement measurement mechanism of said stake in said load box; First sedimentation mark of the native relative settlement measurement mechanism of wherein said stake is arranged on the cushion cap of pile body, and second sedimentation mark is arranged on the inter-pile soil that bankets.Step 3, at center, the limit mid point of said cushion cap, and the angle point place of said inter-pile soil is provided with said earth pressure cell respectively.Step 4, compaction in layers in said load box is banketed according to the soil nature condition, reaches design height.Step 5 to schedule at interval, is measured the reading of the native relative settlement measurement mechanism of said stake by dimensional measuring instrument; Survey the reading of reading said earth pressure cell by said plate reading device, obtain test result.
Preferably, said dimensional measuring instrument is a slide measure.
Preferably, said first sedimentation target cantilever and the said second sedimentation target cantilever laterally arrange.
Preferably, each said earth pressure cell is distributed in the different degree of depth places of banketing.
The invention has the beneficial effects as follows:
Embankment stake in-situ testing device of the present invention is particularly useful for open-air relatively poor test environment, realizes the original position loading test to embankment stake sedimentation, has workablely, and testing cost is low, and the measurement result precision is high
Beneficial effect.
Embankment stake in-situ testing device of the present invention is simple in structure, and cost is low, and can conveniently adjust load case size according to test request.
Embankment stake home position testing method of the present invention is because above-mentioned construction sequence, has advantages such as convenient and swift, economical and practical, strong operability.
Below will combine accompanying drawing that the technique effect of design of the present invention, concrete structure and generation is described further, to understand the object of the invention, characteristic and effect fully.
Description of drawings
Fig. 1 is the sectional structure sketch map of embankment stake in-situ testing device one embodiment of the present invention.
Fig. 2 is the structural representation of Fig. 1 king-pile soil relative settlement measuring device part.
Fig. 3 is every layer an earth pressure cell arrangement sketch map among Fig. 1.
The specific embodiment
As shown in Figure 1, a specific embodiment of embankment stake in-situ testing device of the present invention is measured assembly and is formed by being full of 2 the load box of banketing, the native relative settlement measurement mechanism of stake, soil pressure.Banketing 2 is that compaction in layers obtains, and wherein bankets with the part of cushion cap 11 same elevations and is called inter-pile soil 21.
Particularly, in the present embodiment, load box is made up of column 51, scaffold 52, template 53 and some connectors etc., has beneficial effects such as low, the easy acquisition of cost, the big or small facility of adjustment.
The soil pressure force measurement component comprises a plurality of earth pressure cells 6 and plate reading device (not shown in figure 1), and each earth pressure cell 6 is separately positioned on 2 the diverse location of banketing.
The native relative settlement measurement mechanism of stake is arranged on banketing in 2 of load box, mainly comprises first vertical rod 42 and second vertical rod 32.
As shown in Figure 2, particularly, the native relative settlement measurement mechanism of stake comprises first sedimentation mark that is arranged on the cushion cap 11 and is arranged on second sedimentation mark on the inter-pile soil 21.
First sedimentation mark comprises that the upper end that is set with first vertical rod, 42, the first vertical rods 42 on first substrate, 41, the first substrates 41 is provided with first cantilever 43 of horizontal arrangement.First substrate 41 is a square plate, is processed by the iron plate of length of side 400mm.
First vertical rod 42 is connected and composed through bolt by plurality of sections of steel pipes, optionally the free adjustment height.
Second sedimentation mark is identical with first sedimentation mark structure, comprises that the upper end that is set with second vertical rod, 32, the second vertical rods 32 on second substrate, 31, the second substrates 31 is provided with second cantilever 33 of horizontal arrangement.
Second sedimentation mark is provided with first sedimentation mark in opposite directions, and especially, second cantilever 33 and first cantilever, 43 keeping parallelisms are good.
As shown in Figure 3, the soil pressure force measurement component comprises a plurality of earth pressure cells 6 and plate reading device.Each earth pressure cell 6 is separately positioned on 2 the diverse location of banketing, like center, the limit mid point of cushion cap 11, and the angle point place of inter-pile soil 21, to obtain survey data comprehensively and accurately as far as possible.
A kind of embankment stake home position testing method of the present invention has been used above-mentioned embankment stake in-situ testing device, may further comprise the steps:
Step 1, installed load case in the setting range around the embankment stake.In practical implementation, can adopt materials such as scaffold, template, column to form.
Step 3, at center, the limit mid point of cushion cap 11, and the angle point place of inter-pile soil 21, earth pressure cell 6 is set respectively.Especially, these earth pressure cells 6 also are distributed in the different degree of depth places of banketing.
Step 4, according to the soil nature condition, compaction in layers is banketed in load box, reaches design height.
Step 5 to schedule at interval, is measured the reading of the native relative settlement measurement mechanism of stake by dimensional measuring instrument (like slide measure).Particularly, slide measure capable of using is directly surveyed and is read the spacing between first cantilever 33 and second cantilever 43, can obtain the relative settlement numerical value at following soil of load action.
Simultaneously, survey the reading of reading earth pressure cell 6, obtain test result by the plate reading device.
Especially, the first sedimentation target cantilever 43 and the second sedimentation target cantilever 33 laterally arrange, and can be convenient for measuring, and obtain more accurate test result.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can design according to the present invention make many modifications and variation.Therefore, all technician in the art all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology through the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (8)
1. an embankment stake in-situ testing device is characterized in that: measure assembly and form by being full of load box, the native relative settlement measurement mechanism of stake, the soil pressure of banketing; The native relative settlement measurement mechanism of said stake is arranged in the banketing of said load box; The native relative settlement measurement mechanism of said stake comprises first sedimentation mark on the cushion cap that is arranged on pile body and is arranged on second sedimentation mark on said the banketing; Said first sedimentation mark comprises and is set with vertical rod on the said substrate by substrate that the upper end of said vertical rod is provided with the cantilever of horizontal arrangement; Said second sedimentation mark is identical with said first sedimentation mark structure, is provided with in opposite directions; Said soil pressure force measurement component comprises a plurality of earth pressure cells and plate reading device; Said earth pressure cell is separately positioned on the said diverse location that bankets.
2. embankment stake in-situ testing device as claimed in claim 1, it is characterized in that: said load box comprises column, scaffold and template.
3. embankment stake in-situ testing device as claimed in claim 1, it is characterized in that: said vertical rod is connected and composed through bolt by plurality of sections of steel pipes.
4. embankment stake in-situ testing device as claimed in claim 1, it is characterized in that: said cantilever is weldingly fixed on the said column.
5. embankment stake home position testing method that utilizes above-mentioned arbitrary testing arrangement may further comprise the steps:
Step 1 is installed said load box in the setting range around the embankment stake;
Step 2 is installed the native relative settlement measurement mechanism of said stake in said load box; First sedimentation mark of the native relative settlement measurement mechanism of wherein said stake is arranged on the cushion cap of pile body, and second sedimentation mark is arranged on the inter-pile soil that bankets;
Step 3, at center, the limit mid point of said cushion cap, and the angle point place of said inter-pile soil is provided with said earth pressure cell respectively;
Step 4, compaction in layers in said load box is banketed according to the soil nature condition, reaches design height;
Step 5 to schedule at interval, is measured the reading of the native relative settlement measurement mechanism of said stake by dimensional measuring instrument; Survey the reading of reading said earth pressure cell by said plate reading device, obtain test result.
6. embankment stake home position testing method as claimed in claim 5, wherein: said dimensional measuring instrument is a slide measure.
7. embankment stake home position testing method as claimed in claim 5, wherein: said first sedimentation target cantilever and the said second sedimentation target cantilever laterally arrange.
8. embankment stake home position testing method as claimed in claim 5, wherein: each said earth pressure cell is distributed in the different degree of depth places of banketing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012101039368A CN102605757A (en) | 2012-04-11 | 2012-04-11 | Device and method for in-situ test of embankment pile |
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| CN2012101039368A CN102605757A (en) | 2012-04-11 | 2012-04-11 | Device and method for in-situ test of embankment pile |
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| CN102605757A true CN102605757A (en) | 2012-07-25 |
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| CN2012101039368A Pending CN102605757A (en) | 2012-04-11 | 2012-04-11 | Device and method for in-situ test of embankment pile |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076131A (en) * | 2014-06-27 | 2014-10-01 | 中国地质科学院水文地质环境地质研究所 | Preloading multifunctional automatic testing system and method |
| CN105353105A (en) * | 2015-11-26 | 2016-02-24 | 河海大学 | Development testing device for plane soil arch effect and multi-layer reinforcement film-drawing effect in pile-supported type road embankment |
| CN111622277A (en) * | 2020-06-01 | 2020-09-04 | 浙江大学 | Test device and test method for simulating influence of pile end cavities on bearing performance of pile foundation |
| CN114482146A (en) * | 2022-01-05 | 2022-05-13 | 合肥工业大学 | Measuring device for differential settlement of pile soil |
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| JP2005180015A (en) * | 2003-12-19 | 2005-07-07 | Daicho Tokushu Doboku Kk | Method of improving unevenly settled foundation and structure for improving unevenly settled foundation |
| CN101430199A (en) * | 2007-11-05 | 2009-05-13 | 黄广军 | Method and apparatus for monitoring soft soil base sedimentation |
| CN201681023U (en) * | 2010-05-07 | 2010-12-22 | 中国科学院武汉岩土力学研究所 | Tester for testing bearing capacity and deformation characteristics of foundation soil in room |
| CN202577267U (en) * | 2012-04-11 | 2012-12-05 | 上海市城市建设设计研究总院 | In-situ embankment pile testing device |
| CN102877448A (en) * | 2012-10-24 | 2013-01-16 | 中铁西北科学研究院有限公司 | Deformation monitoring datum point device applicable to permafrost regions and method for mounting deformation monitoring datum point device |
| CN202881919U (en) * | 2012-10-23 | 2013-04-17 | 马鞍山十七冶工程科技有限责任公司 | Combination test device of rigid bearing plate and deflectograph |
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2012
- 2012-04-11 CN CN2012101039368A patent/CN102605757A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005180015A (en) * | 2003-12-19 | 2005-07-07 | Daicho Tokushu Doboku Kk | Method of improving unevenly settled foundation and structure for improving unevenly settled foundation |
| CN101430199A (en) * | 2007-11-05 | 2009-05-13 | 黄广军 | Method and apparatus for monitoring soft soil base sedimentation |
| CN201681023U (en) * | 2010-05-07 | 2010-12-22 | 中国科学院武汉岩土力学研究所 | Tester for testing bearing capacity and deformation characteristics of foundation soil in room |
| CN202577267U (en) * | 2012-04-11 | 2012-12-05 | 上海市城市建设设计研究总院 | In-situ embankment pile testing device |
| CN202881919U (en) * | 2012-10-23 | 2013-04-17 | 马鞍山十七冶工程科技有限责任公司 | Combination test device of rigid bearing plate and deflectograph |
| CN102877448A (en) * | 2012-10-24 | 2013-01-16 | 中铁西北科学研究院有限公司 | Deformation monitoring datum point device applicable to permafrost regions and method for mounting deformation monitoring datum point device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076131A (en) * | 2014-06-27 | 2014-10-01 | 中国地质科学院水文地质环境地质研究所 | Preloading multifunctional automatic testing system and method |
| CN105353105A (en) * | 2015-11-26 | 2016-02-24 | 河海大学 | Development testing device for plane soil arch effect and multi-layer reinforcement film-drawing effect in pile-supported type road embankment |
| CN111622277A (en) * | 2020-06-01 | 2020-09-04 | 浙江大学 | Test device and test method for simulating influence of pile end cavities on bearing performance of pile foundation |
| CN114482146A (en) * | 2022-01-05 | 2022-05-13 | 合肥工业大学 | Measuring device for differential settlement of pile soil |
| CN114482146B (en) * | 2022-01-05 | 2024-05-24 | 合肥工业大学 | Pile soil differential settlement measuring device |
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Application publication date: 20120725 |