CN204266260U - A kind of experimental rig pile foundation being applied to load obliquely on centrifuge - Google Patents
A kind of experimental rig pile foundation being applied to load obliquely on centrifuge Download PDFInfo
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- CN204266260U CN204266260U CN201420685812.XU CN201420685812U CN204266260U CN 204266260 U CN204266260 U CN 204266260U CN 201420685812 U CN201420685812 U CN 201420685812U CN 204266260 U CN204266260 U CN 204266260U
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Abstract
A kind of experimental rig pile foundation being applied to load obliquely on centrifuge of the utility model, belongs to pile foundation centrifuge model test technique field; The technical problem solved is to provide a kind of experimental rig pile foundation being applied to load obliquely on centrifuge, loading component light and flexible, is easy to the dismounting in process of the test and fixes; The technical scheme adopted is: reaction beam is fixedly mounted on above centrifugal mold molding box by bracing frame, the side, middle part of reaction beam is installed with lever fixed head, counter-force its intermediate part is arranged on the bottom of lever fixed head by pin and counter-force lever is that fulcrum is rotatable with pin, counter-force lever lower end contacts with test pile upper end, reaction beam one end is installed with pulley fixed frame, pulley fixed frame is provided with fixed pulley, and wire rope one end is connected with counter-force lever upper end and the other end is walked around fixed pulley and is connected with loading supporting plate; The utility model is used for the load obliquely in pile foundation centrifugal model test, pile foundation being applied to different size.
Description
Technical field
A kind of experimental rig pile foundation being applied to load obliquely on centrifuge of the utility model, belongs to pile foundation centrifuge model test technique field.
Background technology
Geotechnical centrifugal model test is according to centrifugal force field and gravitational field equivalence principle, and consider that the non-linear of earth working material and selfweight stress are on the impact of earth structure, prototype structure thing through reduced scale is placed in the centrifugal field of times acceleration of gravity, make model and prototype respective point reach ess-strain identical, be out of shape similar, failure mechanism is identical, thus reproduce prototype characteristic, for theoretical and numerical analysis method provide true and reliable reference frame.
In Practical Project, the load situation that pile foundation is subject to is very complicated, and pile foundation not only can be born vertically and horizontal direction load, also can bear the effect of load obliquely.Pile foundation such as in the engineerings such as harbour, bridge and offshore platform, is mainly used for bearing inclined load, and is not only the level of bearing or vertical load.But, in the test of stress model obliquely of current pile foundation, load mode utilizes jack to come to load stake jacking row, this mode is extremely inconvenience in for centrifugal model test, when jack being put into together with model casing centrifugal chamber in centrifugal model test, in trial run process, people cannot operate jack, also just cannot load dynamically pile foundation in process of the test, to such an extent as to centrifuge can only be suspended running at present, testing crew enters centrifugal chamber and adjusts jack, reach the size of lower step load, restart centrifuge again, iterative cycles like this.
Utility model content
The utility model overcomes the deficiency that prior art exists, technical problem to be solved is to provide a kind of experimental rig pile foundation being applied to load obliquely on centrifuge, loading component light and flexible, be easy to the dismounting in process of the test and fix, the flexibility of pile foundation in centrifugal box position can be met, charger can accurately be installed, and centrifugal test is carried out smoothly.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of experimental rig pile foundation being applied to load obliquely on centrifuge, comprise bracing frame, reaction beam, lever fixed head, counter-force lever, pulley fixed frame, fixed pulley, wire rope and loading supporting plate, reaction beam is fixedly mounted on above centrifugal mold molding box by bracing frame, the side, middle part of reaction beam is installed with lever fixed head, the bottom of lever fixed head is provided with chute, the middle part of counter-force lever to be coordinated with chute by pin and to be fixedly mounted on lever fixed head and counter-force lever is that fulcrum is rotatable with pin, the lower end of counter-force lever contacts with the upper end of test pile, the lower end of described test pile is fixed on centrifugal mold molding box inside, one end of reaction beam is installed with the pulley fixed frame of L shape, the riser of pulley fixed frame arranges downwards and transverse slat is fixedly connected with reaction beam, the riser face that pulley fixed frame is relative with centrifugal mold molding box is provided with fixed pulley by pulley base, one end of wire rope is fixedly connected with counter-force lever upper end, the other end of wire rope is walked around fixed pulley and to be stretched to below centrifugal mold molding box outside and to be connected with loading supporting plate.
The riser of described pulley fixed frame is provided with chute, and the pulley base of fixed pulley is fixedly mounted on described riser chute, and the permanent position of pulley base on chute is adjustable.
Described bracing frame is provided with chute, and reaction beam is fixedly mounted on bracing frame by bolt with coordinating of chute, and the position that reaction beam is bolted in chute is adjustable.
Support frame as described above is mounted by means of bolts on centrifugal mold molding box.
Described bracing frame and reaction beam are the square steel pipe in cross section.
The beneficial effect that the utility model is compared with the existing technology had is: utilize the gravity of counterweight to pull counter-force lever to rotate around pin, the gravitational field making full use of the controlled different sizes in centrifuge applies the load obliquely of different size to pile foundation, according to formula F=ma, the acceleration that centrifuge is arranged is different, the gravity F of counterweight also adjusts thereupon, loading component light and flexible, be easy to the dismounting in process of the test and fix, the flexibility of pile foundation in centrifugal box position can be met, charger can accurately be installed, and centrifugal test is carried out smoothly; By counter-force lever, fixed pulley, wire rope and counterweight as loading component, each parts light and flexible, is easy to the dismounting in process of the test and fixes; Art chute designs on fixed head, bracing frame and pulley fixed frame riser, all makes installing and using of each parts more flexible.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that in the utility model, counter-force lever is loading mechanism of action figure supporting plate adding counterweight variable-angle.
In figure: 1 is bracing frame, 2 is reaction beam, and 3 is lever fixed head, and 4 is counter-force lever, and 5 is pulley fixed frame, and 6 is fixed pulley, and 7 is wire rope, and 8 for loading supporting plate, and 9 is centrifugal mold molding box, and 10 is test pile.
Detailed description of the invention
As shown in Figure 1-2, a kind of experimental rig pile foundation being applied to load obliquely on centrifuge of the utility model, comprise bracing frame 1, reaction beam 2, lever fixed head 3, counter-force lever 4, pulley fixed frame 5, fixed pulley 6, wire rope 7 and loading supporting plate 8, reaction beam 2 is fixedly mounted on above centrifugal mold molding box 9 by bracing frame 1, the side, middle part of reaction beam 2 is installed with lever fixed head 3, the bottom of lever fixed head 3 is provided with chute, the middle part of counter-force lever 4 to be coordinated with chute by pin and to be fixedly mounted on lever fixed head 3 and counter-force lever 4 is that fulcrum is rotatable with pin, the lower end of counter-force lever 4 contacts with the upper end of test pile 10, the lower end of described test pile 10 is fixed on centrifugal mold molding box 9 inside, one end of reaction beam 2 is installed with the pulley fixed frame 5 of L shape, the riser of pulley fixed frame 5 is arranged downwards and transverse slat is fixedly connected with reaction beam 2, the riser face that pulley fixed frame 5 is relative with centrifugal mold molding box 9 is provided with fixed pulley 6 by pulley base, one end of wire rope 7 is fixedly connected with counter-force lever 4 upper end, the other end of wire rope 7 is walked around fixed pulley 6 and is stretched to the outside below of centrifugal mold molding box 9 and be connected with loading supporting plate 8.
The riser of described pulley fixed frame 5 is provided with chute, and the pulley base of fixed pulley 6 is fixedly mounted on described riser chute, and the permanent position of pulley base on chute is adjustable.
Described bracing frame 1 is provided with chute, and reaction beam 2 is fixedly mounted on bracing frame 1 by bolt with coordinating of chute, and the position that reaction beam 2 is bolted in chute is adjustable.
Support frame as described above 1 is mounted by means of bolts on centrifugal mold molding box 9.
Described bracing frame 1 and reaction beam 2 are the square steel pipe in cross section.
Test method of the present utility model is:
During use, reaction beam 2 is arranged on the top of centrifugal mold molding box 9 by bracing frame 1, bracing frame 1 and centrifugal mold molding box 9 adopt bolt to fix, and ensure that bracing frame 1 and reaction beam 2 carry out can not departing from and move in process in centrifugal test;
When carrying out the Oblique loading centrifugal test of stake, first bolt is adopted to fix lever fixed head 3 and the side of reaction beam 2, the counter-force lever 4 of reserved porose steel will be carried out in advance through pin, pin is as the fulcrum of counter-force lever 4, counter-force lever 4 freely can rotate around it, lever fixed head 3 is provided with chute, described pin is fixedly mounted in chute counter-force lever 4 installation site is determined, allow counter-force lever 4 lower end and test pile 10 top contact, then according to the size tested with vertical direction angle required for Oblique loading, allow in the chute of pin band dynamical reaction lever 4 on lever fixed head 3 and move left and right, counter-force lever 4 is adjusted to the required inclination angle of test, ensure that initial position and the vertical direction angle of counter-force lever 4 can not change before centrifugal test is carried out,
As shown in Figure 2, according to lever principle, loading supporting plate 8 puts counterweight, utilize the gravity of counterweight, make wire rope 7 produce pulling force, counter-force lever 4 is under the effect of fulcrum pin, by very little power, the end power obliquely of counter-force lever 4 can be provided, and then load is obliquely applied to test pile 10.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from the utility model aim.Such as, in the utility model, all chutes all can adopt guide rail etc. other can realize any shape of its function.
Claims (5)
1. experimental rig pile foundation being applied to load obliquely on centrifuge, it is characterized in that: comprise bracing frame (1), reaction beam (2), lever fixed head (3), counter-force lever (4), pulley fixed frame (5), fixed pulley (6), wire rope (7) and loading supporting plate (8), reaction beam (2) is fixedly mounted on centrifugal mold molding box (9) top by bracing frame (1), the side, middle part of reaction beam (2) is installed with lever fixed head (3), the bottom of lever fixed head (3) is provided with chute, the middle part of counter-force lever (4) to coordinate with chute by pin that to be fixedly mounted on the upper and counter-force lever (4) of lever fixed head (3) with pin be that fulcrum is rotatable, the lower end of counter-force lever (4) contacts with the upper end of test pile (10), the lower end of described test pile (10) is fixed on centrifugal mold molding box (9) inside, one end of reaction beam (2) is installed with the pulley fixed frame (5) of L shape, the riser of pulley fixed frame (5) is arranged downwards and transverse slat is fixedly connected with reaction beam (2), the riser face that pulley fixed frame (5) is relative with centrifugal mold molding box (9) is provided with fixed pulley (6) by pulley base, one end of wire rope (7) is fixedly connected with counter-force lever (4) upper end, the other end of wire rope (7) is walked around fixed pulley (6) and is stretched to the outside below of centrifugal mold molding box (9) and be connected with loading supporting plate (8).
2. a kind of experimental rig pile foundation being applied to load obliquely on centrifuge according to claim 1, it is characterized in that: the riser of described pulley fixed frame (5) is provided with chute, the pulley base of fixed pulley (6) is fixedly mounted on described riser chute, and the permanent position of pulley base on chute is adjustable.
3. a kind of experimental rig pile foundation being applied to load obliquely on centrifuge according to claim 1 and 2, it is characterized in that: described bracing frame (1) is provided with chute, reaction beam (2) is fixedly mounted on bracing frame (1) by bolt with coordinating of chute, and the position that reaction beam (2) is bolted in chute is adjustable.
4. a kind of experimental rig pile foundation being applied to load obliquely on centrifuge according to claim 1 and 2, is characterized in that: support frame as described above (1) is mounted by means of bolts on centrifugal mold molding box (9).
5. a kind of experimental rig pile foundation being applied to load obliquely on centrifuge according to claim 1 and 2, is characterized in that: described bracing frame (1) and reaction beam (2) are the square steel pipe in cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420685812.XU CN204266260U (en) | 2014-11-17 | 2014-11-17 | A kind of experimental rig pile foundation being applied to load obliquely on centrifuge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420685812.XU CN204266260U (en) | 2014-11-17 | 2014-11-17 | A kind of experimental rig pile foundation being applied to load obliquely on centrifuge |
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| CN204266260U true CN204266260U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420685812.XU Expired - Fee Related CN204266260U (en) | 2014-11-17 | 2014-11-17 | A kind of experimental rig pile foundation being applied to load obliquely on centrifuge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887946A (en) * | 2016-06-17 | 2016-08-24 | 同济大学 | Indoor experiment device of combined loading of model pile |
| CN105973588A (en) * | 2016-07-19 | 2016-09-28 | 奇瑞汽车股份有限公司 | Vehicle door trim panel armrest durability detection device |
| CN109991080A (en) * | 2019-03-26 | 2019-07-09 | 浙江大学 | A kind of centrifugal test device and method that simulation static pressure pile-sinking soil compaction effect influences neighbouring existing tunnel |
| CN116335105A (en) * | 2023-05-11 | 2023-06-27 | 烟台市交通运输服务中心(烟台市城市轨道交通建设服务中心、烟台市铁路建设服务中心) | Highway subgrade fixed-point compression pressure measuring device |
-
2014
- 2014-11-17 CN CN201420685812.XU patent/CN204266260U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887946A (en) * | 2016-06-17 | 2016-08-24 | 同济大学 | Indoor experiment device of combined loading of model pile |
| CN105973588A (en) * | 2016-07-19 | 2016-09-28 | 奇瑞汽车股份有限公司 | Vehicle door trim panel armrest durability detection device |
| CN109991080A (en) * | 2019-03-26 | 2019-07-09 | 浙江大学 | A kind of centrifugal test device and method that simulation static pressure pile-sinking soil compaction effect influences neighbouring existing tunnel |
| CN116335105A (en) * | 2023-05-11 | 2023-06-27 | 烟台市交通运输服务中心(烟台市城市轨道交通建设服务中心、烟台市铁路建设服务中心) | Highway subgrade fixed-point compression pressure measuring device |
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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: 20150415 Termination date: 20151117 |