CN204326120U - A kind of device measuring horizontal bearing capacity of single pile - Google Patents
A kind of device measuring horizontal bearing capacity of single pile Download PDFInfo
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- CN204326120U CN204326120U CN201420758855.6U CN201420758855U CN204326120U CN 204326120 U CN204326120 U CN 204326120U CN 201420758855 U CN201420758855 U CN 201420758855U CN 204326120 U CN204326120 U CN 204326120U
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Abstract
The utility model relates to a kind of device measuring horizontal bearing capacity of single pile, comprises Model Pile, counterforce device, jack, spherical free bearing, reference pegs, datum line beam, resistance strain gage, terminal, long range dial gage, program control statical strain indicator, load sensor, numerical value dynamometer and numerical value process computer; Spherical free bearing, jack and load sensor is set gradually between Model Pile and counterforce device; The contact surface of Model Pile and spherical free bearing is provided with positioner, and the two panels resistance strain gage of positioner and sustained height is coplanar; Spherical free bearing, jack, load sensor, and pass through Model Pile pile body axis all point-blank jointly; Load sensor is connected with numerical value dynamometer, and the horizontal force that jack applies is by the axis of Model Pile.The utility model horizontal bearing capacity of single pile measurement mechanism solves typical measuring arrangements well cannot the problem of trickle loading, loads more accurate, is conducive to strengthen test effect and improves the accuracy of survey data.
Description
Technical field
The utility model relates to Geotechnical Engineering field, more particularly, relates to a kind of device measuring horizontal bearing capacity of single pile.
Background technology
Pile foundation in construction work, under wind load, seismic load, mechanical braking load or the effect such as soil pressure, water pressure, can bear certain horizontal loading mostly.Adopt prototype test to the measurement of horizontal bearing capacity of single pile at present, it is higher that it measures difficulty more, and cost is comparatively large, and levels of precision is difficult to ensure.
Model testing has advantage compared with prototype test, such as study the experimental study of the general rule of pile foundation, need to carry out the Multitest under different condition, model testing can at limited human and material resources with in the time, and on purpose Control experiment condition carries out Multitest to meet the demands.The model testing of stake is the actual working state according to pile foundation, carry out the structure of comprehensive and reasonable, set up the model with prototype with similitude rule, by scientific instrument and equipment, Control experiment condition artificially, the test of the stress deformation characteristic of research pile foundation when a certain or some situation.It is applied in the research of pile foundation engineering technique, design and the construction stage all occupies an important position, and it not only provides experimental data and testing and verification for the theoretical research of pile foundation, and for engineering design provide according to and instruct engineering practice.Existing model test apparatus is too simple, cannot realize accurate loading, and measurement result exists larger error.
Summary of the invention
The technical problems to be solved in the utility model is, provides the horizontal bearing capacity of single pile measurement mechanism that a kind of certainty of measurement is high, operate facility, good economy performance.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of device measuring horizontal bearing capacity of single pile, comprise Model Pile, counterforce device, jack, spherical free bearing, reference pegs, datum line beam, resistance strain gage, terminal, long range dial gage, program control statical strain indicator, load sensor, numerical value dynamometer and numerical value process computer;
Two described long range dial gages to be fixed on datum line beam and to be symmetrically placed in the outside of Model Pile; Described resistance strain gage is arranged on inside Model Pile symmetrically, arranges two panels resistance strain gage in sustained height, and the setting direction of two panels resistance strain gage is by pile body axis; Described resistance strain gage is connected with described program control statical strain indicator with wire by terminal, and described program control statical strain indicator connects numerical value process computer;
Described spherical free bearing, jack and load sensor is set gradually between Model Pile and counterforce device; The contact surface of described Model Pile and spherical free bearing is provided with positioner, and the two panels resistance strain gage of described positioner and sustained height is coplanar; Described spherical free bearing, jack, load sensor, and pass through Model Pile pile body axis all point-blank jointly; Described load sensor is connected with numerical value dynamometer, and the horizontal force that described jack applies is by the axis of Model Pile.
In such scheme, described positioner comprises the groove be arranged in Model Pile and the lug boss be arranged on described spherical free bearing, and described lug boss inserts in groove.
In such scheme, described counterforce device comprises Loading Plate and some rigid projectiles, and described Loading Plate is vertically placed, and load sensor is close in the inner side of Loading Plate, the rigid projectiles that the outside of Loading Plate is equidistantly buried underground near some.
In such scheme, described Model Pile is spliced by two semi-cylindrical seamless steel pipes, and described Model Pile is provided with wire fairlead and bolt hole, and the bottom of described Model Pile is provided with steel disc.
Implement the device of measurement horizontal bearing capacity of single pile of the present utility model, there is following beneficial effect:
1, the utility model measurement mechanism can realize loading the Accurate Classification of shaft load and the accurate measurement of pile strain, utilize the devices such as program control statical strain indicator, load sensor, numerical value dynamometer, draw the series of parameters such as the pile strain of Model Pile, finally measure horizontal bearing capacity of single pile.The utility model horizontal bearing capacity of single pile measurement mechanism solves typical measuring arrangements well cannot the problem of trickle loading, loads more accurate, is conducive to strengthen test effect and improves the accuracy of survey data.
2, resistance strain gage is placed in Model Pile inside, and the survival rate of resistance strain gage and application life are far above typical measuring arrangements.
3, can location between implementation model stake and fixing spherical free bearing by positioner, thus avoid spherical free bearing in loading procedure, produce slippage, the changing of the relative positions; Accurately can also locate the loading direction of position that spherical free bearing lays and jack, thus avoid that the arranged direction of the loading direction of jack and foil gauge is inconsistent, the error that has certain angle and cause pile strain to measure inaccurate situation to occur.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the front view of the device measuring horizontal bearing capacity of single pile;
Fig. 2 is the top view of the device measuring horizontal bearing capacity of single pile;
Fig. 3 is the elevation of Model Pile;
Fig. 4 is the lateral view of Model Pile;
Fig. 5 is the schematic diagram of groove outside Model Pile pile body.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and describe detailed description of the invention of the present utility model in detail.
As shown in Figures 1 to 5, the device of measurement horizontal bearing capacity of single pile of the present utility model, comprises long range dial gage 1, spherical free bearing 2, jack 3, load sensor 4, numerical value dynamometer 5, Loading Plate 6, rigid projectiles 7, resistance strain gage 8, terminal 9, Model Pile 10, wire 11, program control statical strain indicator 12, numerical value process computer 13, reference pegs 14, datum line beam 15, wire fairlead 16, bolt hole 17, steel disc 18, circular groove 19.
Wherein, reference pegs 14 is arranged on beyond Model Pile 10 and counterforce device influence basin; Long range dial gage 1 to be fixed on datum line beam 15 and to be placed in the outside of Model Pile 10, installs two long range dial gages 1 in power effect horizontal plane Model Pile 10 bilateral symmetry; If ground pile body corner need be measured, also need at the horizontal force line symmetrical installation in above about 500mm place two long range dial gages 1.Resistance strain gage 8 is arranged in the inner side of Model Pile 10, and sustained height domestic demand arranges two panels resistance strain gage 8 symmetrically.Spherical free bearing 2, jack 3 and the load sensor 4 of being with rounded projections is arranged successively between Model Pile 10 and counterforce device; Arrange a circular groove 19 on outside the pile body exposing ground line certain altitude after Model Pile 10 is buried, the position that its setting position need be arranged with sustained height two panels resistance strain gage 8 inside ground line drag stake 10 is coplanar.The size of circular groove 19 is identical with the lug boss of spherical free bearing 2, the lug boss of spherical free bearing 2 inserts in Model Pile 10 pile body outer circular groove 19, spherical free bearing 2, jack 3, load sensor 4 are all point-blank and by the pile body axis of Model Pile 10, load sensor 4 is connected with numerical value dynamometer 5.
This measurement mechanism adopts jack 3 to apply horizontal force, and the position of power is consistent with the arranged direction of sustained height two panels resistance strain gage 8 and jointly pass through the pile body axis of Model Pile 10; Counterforce device is made up of one piece of Loading Plate 6 and some rigid projectiles 7, and Loading Plate 6 is vertically placed, and is close to load sensor 4 inside it, and outside, near the some rigid projectiles equidistantly buried underground 7, makes rigid projectiles 7 uniform stressed.Wire 11 and resistance strain gage 8 are connected by terminal 9 and draw from the wire fairlead 16 of Model Pile 10, be connected with program control statical strain indicator 12 again, program control statical strain indicator 12 is connected with numerical value process computer 13 by USB data line, is recorded the strain data of pile body resistance strain gage 8 by numerical value process computer 13.
Further, Model Pile 10 top and each reserved certain length of stake end are also not exclusively cut open, and pile body arranges bolt hole 17 at interval of a segment distance, and arrange two wire fairleads 16 be arranged symmetrically with pushing up a distance apart from stake; Punch out and the certain thickness steel disc 18 of Model Pile 10 with internal diameter, knock in stake end back cover.The stake top of Model Pile 10, stake end preset space, the thickness of steel disc 18, the size of bolt hole 17, wire fairlead 16 and the spacing of bolt hole 17 suitably can adjust according to the stake footpath of Model Pile 10 and actual needs; Model Pile 10 pile body outer circular groove 19 also can carry out adjustment setting according to actual needs apart from the height on ground.
The installation process of this measurement mechanism is:
First, lay testing element, resistance strain gage 8 and terminal 9 are affixed on the inner surface of Model Pile 10, the layout two panels resistance strain gage 8 of sustained height domestic demand symmetry, terminal 9 and the supporting layout of resistance strain gage 8; Resistance strain gage 8 is connected by terminal 9 with wire 11, and is drawn by the wire fairlead 16 of wire 11 from Model Pile 10; Model Pile 10 closed, at bolt hole 17 place, inserting bolt is fixed, and knocks in stake end back cover with the steel disc 18 of Model Pile 10 with internal diameter and is embedded in the soil body; Be connected with program control statical strain indicator 12 by wire 11, program control statical strain indicator is connected with numerical value process computer 13 by USB data line.
Secondly, be close to Model Pile 10 and arrange spherical free bearing 2, jack 3 and the load sensor 4 of being with rounded projections successively, inserted by the lug boss of spherical free bearing 2 in Model Pile 10 pile body outer circular groove 19, spherical free bearing 2, jack 3, load sensor 4 are all point-blank and by the pile body axis of Model Pile 10; Load sensor 4 is connected with numerical value dynamometer 5; Jack 3 loading direction is consistent with the arranged direction of sustained height two panels resistance strain gage 8 under ground line, and common by pile body axis.
Then, bury counterforce device underground, counterforce device is made up of one piece of Loading Plate 6 and some rigid projectiles 7, Loading Plate 6 is vertically placed, load sensor 4 is close in its side, and opposite side abuts against on the some rigid projectiles equidistantly buried underground 7, makes rigid projectiles 7 uniform stressed.
Finally, arrange reference pegs 14, datum line beam 15 and long range dial gage 1, reference pegs 14 should be arranged on beyond Model Pile 10 and counterforce device influence basin; Long range dial gage 1 is fixed on datum line beam 15, and long range dial gage 1 is placed in the outside of Model Pile 10, installs two long range dial gages 1 in power effect horizontal plane Model Pile 10 bilateral symmetry; If ground pile body corner need be measured, also need at the horizontal force line symmetrical installation in above about 500mm place two long range dial gages 1.
The measuring process of this measurement mechanism is: start jack 3, because counterforce device (Loading Plate 6 and some rigid projectiles 7) can not move, the spherical free bearing 2 of load sensor 4 and band rounded projections is also fixing, so limit the horizontal movement of jack 3, thus horizontal addload is carried out to Model Pile 10; Jack 3 utilizes load sensor 4 and numerical value dynamometer 5, can accurately understand load condition and accurately load; Two panels resistance strain gage 8 in sustained height can reflect the strained situation of pile body tension side and compression-side on this height respectively, after jack 3 loads, program control statical strain indicator 12 can record the strain of pile body resistance strain gage 8, and be connected with numerical value process computer 13 by USB data line, record pile strain data by numerical value process computer 13; The long range dial gage 1 be fixed on datum line beam 14 can record displacement at pile top.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, also can make a lot of form, these all belong within protection of the present utility model.
Claims (4)
1. measure the device of horizontal bearing capacity of single pile for one kind, it is characterized in that, comprise Model Pile, counterforce device, jack, spherical free bearing, reference pegs, datum line beam, resistance strain gage, terminal, long range dial gage, program control statical strain indicator, load sensor, numerical value dynamometer and numerical value process computer;
Two described long range dial gages to be fixed on datum line beam and to be symmetrically placed in the outside of Model Pile; Described resistance strain gage is arranged on inside Model Pile symmetrically, arranges two panels resistance strain gage in sustained height, and the setting direction of two panels resistance strain gage is by pile body axis; Described resistance strain gage is connected with described program control statical strain indicator with wire by terminal, and described program control statical strain indicator connects numerical value process computer;
Described spherical free bearing, jack and load sensor is set gradually between Model Pile and counterforce device; The contact surface of described Model Pile and spherical free bearing is provided with positioner, and the two panels resistance strain gage of described positioner and sustained height is coplanar; Described spherical free bearing, jack, load sensor, and pass through Model Pile pile body axis all point-blank jointly; Described load sensor is connected with numerical value dynamometer, and the horizontal force that described jack applies is by the axis of Model Pile.
2. the device of measurement horizontal bearing capacity of single pile according to claim 1, is characterized in that, described positioner comprises the groove be arranged in Model Pile and the lug boss be arranged on described spherical free bearing, and described lug boss inserts in groove.
3. the device of measurement horizontal bearing capacity of single pile according to claim 1, it is characterized in that, described counterforce device comprises Loading Plate and some rigid projectiles, described Loading Plate is vertically placed, load sensor is close in the inner side of Loading Plate, the rigid projectiles that the outside of Loading Plate is equidistantly buried underground near some.
4. the device of measurement horizontal bearing capacity of single pile according to claim 1, it is characterized in that, described Model Pile is spliced by two semi-cylindrical seamless steel pipes, and described Model Pile is provided with wire fairlead and bolt hole, and the bottom of described Model Pile is provided with steel disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420758855.6U CN204326120U (en) | 2014-12-05 | 2014-12-05 | A kind of device measuring horizontal bearing capacity of single pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420758855.6U CN204326120U (en) | 2014-12-05 | 2014-12-05 | A kind of device measuring horizontal bearing capacity of single pile |
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| CN204326120U true CN204326120U (en) | 2015-05-13 |
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| CN201420758855.6U Expired - Fee Related CN204326120U (en) | 2014-12-05 | 2014-12-05 | A kind of device measuring horizontal bearing capacity of single pile |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002939A (en) * | 2015-07-29 | 2015-10-28 | 武汉科技大学 | Model device and method for grouped pile field test |
| CN106088173A (en) * | 2016-08-11 | 2016-11-09 | 青岛理工大学 | A kind of prefabricated pile Horizontal Displacement and pile body stress joint test device |
| CN106088171A (en) * | 2016-08-11 | 2016-11-09 | 青岛理工大学 | A kind of prefabricated pile Horizontal Displacement and pile body stress joint test method |
| CN106480908A (en) * | 2016-10-31 | 2017-03-08 | 中国地质大学（武汉） | A kind of mini pile horizontally loading test device and method |
| CN112816001A (en) * | 2021-02-26 | 2021-05-18 | 武汉理工大学 | Jacking process-based synchronous testing method for load displacement of bearings of multiple support shaft systems |
| CN113235675A (en) * | 2021-05-13 | 2021-08-10 | 湖南科技大学 | Indoor model test device for simulating stress deformation of karst cave foundation pile and using method thereof |
| CN114809121A (en) * | 2022-03-28 | 2022-07-29 | 台州市椒江建设工程质量检测中心有限公司 | Pile foundation horizontal load test device |
| CN113235675B (en) * | 2021-05-13 | 2024-04-26 | 湖南科技大学 | Indoor model test device for simulating stress deformation of karst cave foundation pile and application method thereof |
-
2014
- 2014-12-05 CN CN201420758855.6U patent/CN204326120U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002939A (en) * | 2015-07-29 | 2015-10-28 | 武汉科技大学 | Model device and method for grouped pile field test |
| CN106088173A (en) * | 2016-08-11 | 2016-11-09 | 青岛理工大学 | A kind of prefabricated pile Horizontal Displacement and pile body stress joint test device |
| CN106088171A (en) * | 2016-08-11 | 2016-11-09 | 青岛理工大学 | A kind of prefabricated pile Horizontal Displacement and pile body stress joint test method |
| CN106088173B (en) * | 2016-08-11 | 2019-04-02 | 青岛理工大学 | A kind of prefabricated pile Horizontal Displacement and pile body stress joint test device |
| CN106088171B (en) * | 2016-08-11 | 2019-04-02 | 青岛理工大学 | A kind of prefabricated pile Horizontal Displacement and pile body stress joint test method |
| CN106480908A (en) * | 2016-10-31 | 2017-03-08 | 中国地质大学（武汉） | A kind of mini pile horizontally loading test device and method |
| CN112816001A (en) * | 2021-02-26 | 2021-05-18 | 武汉理工大学 | Jacking process-based synchronous testing method for load displacement of bearings of multiple support shaft systems |
| CN113235675A (en) * | 2021-05-13 | 2021-08-10 | 湖南科技大学 | Indoor model test device for simulating stress deformation of karst cave foundation pile and using method thereof |
| CN113235675B (en) * | 2021-05-13 | 2024-04-26 | 湖南科技大学 | Indoor model test device for simulating stress deformation of karst cave foundation pile and application method thereof |
| CN114809121A (en) * | 2022-03-28 | 2022-07-29 | 台州市椒江建设工程质量检测中心有限公司 | Pile foundation horizontal load test device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20211205 |