CN203238678U - Ultralong pile effective pile length simulation testing box - Google Patents
Ultralong pile effective pile length simulation testing box Download PDFInfo
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- CN203238678U CN203238678U CN 201320132540 CN201320132540U CN203238678U CN 203238678 U CN203238678 U CN 203238678U CN 201320132540 CN201320132540 CN 201320132540 CN 201320132540 U CN201320132540 U CN 201320132540U CN 203238678 U CN203238678 U CN 203238678U
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides an ultralong pile effective pile length simulation testing box, and relates to the technical field of foundation structure testing. The ultralong pile effective pile length simulation testing box comprises a box body, wherein a counter-force frame is arranged on the external of the box body, a jack is arranged above the box body, a testing soil layer is arranged in the box body, a simulation pile is arranged in the testing soil layer, the testing soil layer and the simulation pile are provided with sensors, a flexible loader is arranged at the upper end of the testing soil layer, and the simulation pile is connected with the counter-force frame through the jack. The ultralong pile effective pile length simulation testing box resolves the technical problems that an existing experimental equipment measure cannot comprehensively reflect the actual working condition of an ultralong pile foundation, and existing on-site single pile and pile group experiment researches are limited. The ultralong pile effective pile length simulation testing box has the advantages that the testing box comprehensively reflects the actual working condition of the ultralong pile foundation, pile parameters can be adjusted at any time and piles of different types, a underlying stratum, a bearing stratum and foundation soil can be replaced in an experiment, therefore a series of experimental functions can be completed, experimental data are reliable, and operation is convenient and easy to achieve.
Description
Technical field
The utility model relates to foundation structure experimental technique field, especially relates to a kind of simulation laboratory test device of super long pile.
Background technology
Weak soil has the characteristics such as thickness is large, high-moisture, macrovoid ratio, low-intensity, high sensitivity high-compressibility, hypotonicity.In the relatively poor soft clay area of geological conditions, the use of super long pile is a large amount of and is necessary.Mostly the present main method of the construction of soft clay area building is that long stake passes through and the method such as Soft Soil-composite Foundation reinforcing.Along with super long pile basis application development in engineering, the research on super long pile basis also is subject to day by day scholar and engineers and technicians' attention.At present the research on super long pile basis mainly concentrated in the research of carrying calculation of force and settlement calculation method, it is mainly studied and can be divided into theoretical research and two aspects of experimental study.Need to spend a large amount of human and material resources and time owing to carrying out super long pile basis prototype test, especially carrying out the prototype test and research of multi-column pier foundation more can't carry out because of the restriction of site condition and other factors, at this moment have to adopt model testing research, then be generalized in the practical engineering application on the basis of model testing." effective length " obtains the concern of engineering circles and academia as an experimental phenomena, forefathers have done many useful experimental studies and theoretical research in this respect, is not quite similar but study point, and the research technique method is not identical with theoretical analysis method yet.The model testing of stake is the actual working state according to pile foundation, set up the model that has the similitude rule with prototype, by scientific instrument and equipment, Control experiment condition artificially, the test of the stress deformation characteristic of research pile foundation in a certain or some situation all occupies critical role in research application design and the construction stage of pile foundation engineering technique.It not only provides experimental data and testing and verification for the theoretical research of pile foundation, and provides according to and then instruct engineering practice for engineering design.Chinese patent notice of authorization CN201794098U, on April 13 2011 notice of authorization date, name is called the utility model patent of " the bearing capacity of single pile experimental rig that is used for civil works ", discloses the experimental rig that uses stake in a kind of civil works.It comprises arrangement of reinforcement, sleeve pipe arrangement of reinforcement, load plate and oil pressure gauge in test pile, protective casing, pressure-bearing pipe, loading jack, backing plate, upper backup pad, the stake.The arrangement of reinforcement lower end is provided with bearing plate in the stake, and bearing plate is the arc that matches with the test pile diameter, and the bearing plate lower end is connected with test pile.This utility model can detect the whole holding capacity of test pile accurately, but can not detect simultaneously the parameter of test soil, causes experimental data incomplete.
Summary of the invention
Can't reflect super long pile basis practical working situation in order to solve existing experimental facilities means comprehensively, and the circumscribed technical problem of existing on-the-spot super long pile Basic Experiment Study, the utility model provides a kind of super long pile effective length simulated test case, reach the super long pile basic test that to finish certain controlled condition, thereby analyze interaction between piles and soils mechanism in the super long pile basis, the purpose of stake, native load transfer law.
The technical solution of the utility model is: a kind of super long pile effective length simulated test case, it comprises casing, the casing outside is provided with reaction frame, the top of casing is provided with jack, be provided with test beds in the casing, be provided with the simulation stake in the test beds, test beds and simulation stake are provided with sensor, the test beds upper end is provided with flexible loader, and the simulation stake is connected with reaction frame by jack.The simulated test case of setting up according to the principle of similitude dwindles building and super long pile basis prototype in proportion and to carry out simulated experiment.The parameters such as experimental model can adjust at any time that stake is long, stake footpath, pile body stiffness, soil thickness and material, thus and change dissimilar and finish a series of test function, easy row convenient and simple for operation.Simulated test case low cost of manufacture, experimental data is reliable.
As preferably, the lower end of test beds is provided with dividing plate, and the bottom of casing is provided with spring, and dividing plate is connected with casing by spring.Super long pile is stressed under the spring rate simulation heterogeneity soil layer state, and experimental situation and actual soil layer are more approaching.
As preferably, flexible loader be the capsule structure in the form of a ring, flexible loader below is provided with base plate, the simulation stake is connected with jack by base plate.Regulate on-load pressure by the gas flow that adjusting is full of in the flexible loader capsule, easy to adjust.Base plate will simulate stake and the load that is subject to of test beds combines, more near the actual conditions of base integral.
As preferably, the sidewall of casing is provided with several drain holes.Water in the test beds flows to outside the casing by drain hole, and the moisture content of soil layer approached during the moisture content of test beds used with reality, guaranteed experimental measurements.
Compared with prior art, the beneficial effects of the utility model are: break through the field condition complexity that the on-the-spot original position load test stabilization in super long pile basis exists, existing experimental facilities means can't reflect super long pile basis practical working situation comprehensively, and existing on-the-spot super long pile Basic Experiment Study limitation.Chamber reflects super long pile basis practical working situation comprehensively, can adjust at any time a parameter during experiment and change dissimilar stake, substratum, bearing stratum and basis soil, thus a series of test function finished, reliable, the convenient and simple for operation easy row of experimental data.Simulated test case low cost of manufacture.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model.
Among the figure: the 1-casing; 2 reaction frames-; The 3-jack; The flexible loader of 4-; The 5-test beds; 6-simulates stake; The 11-drain hole; The 12-dividing plate; The 13-spring; The 41-cushion cap; The 42-base plate; 51-soil stress meter; The 61-Fibre Optical Sensor.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
As shown in Figure 1, a kind of super long pile effective length simulated test case, it comprises casing 1, casing 1 is fixed on ground.Be provided with test beds 5 in the casing 1, be provided with simulation stake 6 in the test beds 5, test beds 5 and simulation stake 6 are provided with sensor.By the corresponding soil layer of simulation, which floor mound of different nature is test beds 5 be divided into puts.The spacing of 51, two soil stress meters 51 of every layer of test beds 5 uniform several soil stress meter is not more than ten centimetres.Axially simulating stake 6 external surfaces with Fibre Optical Sensor 61 along simulation stake 6.Test beds 5 upper ends are provided with flexible loader 4, flexible loader 4 be the capsule structure in the form of a ring.Be full of air in the capsule of flexible loader 4.Flexible loader 4 belows are provided with base plate 42.The upper surface of base plate 42 is that plane and flexible loader 4 are adjacent to.The soffit of base plate 42 is provided with cushion cap 41, and cushion cap 41 is the boss of outstanding base plate 42 soffits.Cushion cap 41 withstands the upper end of simulation stake 6.Casing 1 outside is provided with reaction frame 2, and reaction frame 2 is the n shape, and the beam of reaction frame 2 is positioned at casing 1 top, and the support lower end of reaction frame 2 is fixing with the counter-force facility basis that is embedded in below ground.The top of casing 1 is provided with jack 3, and simulation stake 6 is connected with reaction frame 2 by jack 3.The seat of jack 3 is fixed with the soffit of reaction frame 2 beams, and the elevating lever of jack 3 withstands cushion cap 41.The lower end of test beds 5 is provided with dividing plate 12, and the bottom of casing 1 is provided with spring 13, and dividing plate 12 is connected with casing 1 by spring 13.The quantity of spring 13 and spring parameter depend on the characteristic of simulating soil layer.The base plate of the lower end of spring 13 and casing 1 is fixed, and dividing plate 12 is pressed in the upper end of spring 13.Dividing plate 12 can move up and down in casing 1.The sidewall of casing 1 is provided with drain hole 11.Drain hole 11 is distributed in the sidewall of casing 1, and the diameter of drain hole 11 is five centimetres, and the distance between two drain holes 11 is not less than 30 centimetres, and the hole of the interior drain hole 11 of casing 1 is provided with filter screen.
Claims (4)
1. super long pile effective length simulated test case, it comprises casing (1), it is characterized in that: described casing (1) outside is provided with reaction frame (2), the top of casing (1) is provided with jack (3), be provided with test beds (5) in the casing (1), be provided with simulation stake (6) in the test beds (5), test beds (5) and simulation stake (6) are provided with sensor, described test beds (5) upper end is provided with flexible loader (4), and described simulation stake (6) is connected with reaction frame (2) by jack (3).
2. a kind of super long pile effective length simulated test case according to claim 1, it is characterized in that: the lower end of described test beds (5) is provided with dividing plate (12), the bottom of described casing (1) is provided with spring (13), and dividing plate (12) is connected with casing (1) by spring (13).
3. a kind of super long pile effective length simulated test case according to claim 1, it is characterized in that: described flexible loader (4) for the capsule structure in the form of a ring, flexible loader (4) below is provided with base plate (42), and described simulation stake (6) is connected with described jack (3) by base plate (42).
4. a kind of super long pile effective length simulated test case according to claim 1, it is characterized in that: the sidewall of described casing (1) is provided with several drain holes (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320132540 CN203238678U (en) | 2013-03-22 | 2013-03-22 | Ultralong pile effective pile length simulation testing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320132540 CN203238678U (en) | 2013-03-22 | 2013-03-22 | Ultralong pile effective pile length simulation testing box |
Publications (1)
| Publication Number | Publication Date |
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| CN203238678U true CN203238678U (en) | 2013-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320132540 Expired - Fee Related CN203238678U (en) | 2013-03-22 | 2013-03-22 | Ultralong pile effective pile length simulation testing box |
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| CN (1) | CN203238678U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213587A (en) * | 2014-09-26 | 2014-12-17 | 福州大学 | P-Y curve measuring device for pseudo-static test on pile-soil interaction |
| CN104280531A (en) * | 2014-10-21 | 2015-01-14 | 水利部交通运输部国家能源局南京水利科学研究院 | Overburden pressure loading device applied to geotechnical vibration table test |
| CN104314109A (en) * | 2014-10-30 | 2015-01-28 | 神华集团有限责任公司 | Experiment device of simulation pile box |
| CN104316282A (en) * | 2014-10-21 | 2015-01-28 | 水利部交通运输部国家能源局南京水利科学研究院 | Geotechnical engineering shaking table test overburden pressure loading method |
| CN104374650A (en) * | 2014-11-20 | 2015-02-25 | 广州市建筑科学研究院有限公司 | Testing device and method for testing static force shear property between tubular pile and grouting soil body |
| CN104790441A (en) * | 2015-04-22 | 2015-07-22 | 杭州科技职业技术学院 | Effective pile length researching simulation test box for variable parameter super-long pile |
| CN104846853A (en) * | 2015-04-22 | 2015-08-19 | 杭州科技职业技术学院 | Multi-pile-foundation simulation testing box |
| CN105604106A (en) * | 2016-03-10 | 2016-05-25 | 清华大学 | Ocean engineering pile foundation experiment simulation apparatus and method under long-term horizontal cyclic loading |
| CN110438966A (en) * | 2019-08-20 | 2019-11-12 | 桂林电子科技大学 | A kind of relative settlement precise control device of modular |
-
2013
- 2013-03-22 CN CN 201320132540 patent/CN203238678U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213587A (en) * | 2014-09-26 | 2014-12-17 | 福州大学 | P-Y curve measuring device for pseudo-static test on pile-soil interaction |
| CN104213587B (en) * | 2014-09-26 | 2016-02-24 | 福州大学 | The P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental |
| CN104280531A (en) * | 2014-10-21 | 2015-01-14 | 水利部交通运输部国家能源局南京水利科学研究院 | Overburden pressure loading device applied to geotechnical vibration table test |
| CN104316282A (en) * | 2014-10-21 | 2015-01-28 | 水利部交通运输部国家能源局南京水利科学研究院 | Geotechnical engineering shaking table test overburden pressure loading method |
| CN104314109A (en) * | 2014-10-30 | 2015-01-28 | 神华集团有限责任公司 | Experiment device of simulation pile box |
| CN104374650A (en) * | 2014-11-20 | 2015-02-25 | 广州市建筑科学研究院有限公司 | Testing device and method for testing static force shear property between tubular pile and grouting soil body |
| CN104790441A (en) * | 2015-04-22 | 2015-07-22 | 杭州科技职业技术学院 | Effective pile length researching simulation test box for variable parameter super-long pile |
| CN104846853A (en) * | 2015-04-22 | 2015-08-19 | 杭州科技职业技术学院 | Multi-pile-foundation simulation testing box |
| CN105604106A (en) * | 2016-03-10 | 2016-05-25 | 清华大学 | Ocean engineering pile foundation experiment simulation apparatus and method under long-term horizontal cyclic loading |
| CN105604106B (en) * | 2016-03-10 | 2017-05-17 | 清华大学 | Ocean engineering pile foundation experiment simulation apparatus and method under long-term horizontal cyclic loading |
| CN110438966A (en) * | 2019-08-20 | 2019-11-12 | 桂林电子科技大学 | A kind of relative settlement precise control device of modular |
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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: 20131016 Termination date: 20150322 |
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| EXPY | Termination of patent right or utility model |