CN202577374U - Pile pressing device for geotechnical centrifuge model test model pile - Google Patents
Pile pressing device for geotechnical centrifuge model test model pile Download PDFInfo
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- CN202577374U CN202577374U CN 201220115798 CN201220115798U CN202577374U CN 202577374 U CN202577374 U CN 202577374U CN 201220115798 CN201220115798 CN 201220115798 CN 201220115798 U CN201220115798 U CN 201220115798U CN 202577374 U CN202577374 U CN 202577374U
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Abstract
The utility model discloses a pile pressing device for a geotechnical centrifuge model test model pile. A middle baseboard is fixed with a lower baseboard through bolts, one end of an upper baseboard is hinged with one end of the middle baseboard, angle adjustment supports are installed on two sides of the other end of the middle baseboard, and angle adjustment lock screws installed on two sides of the other end of the upper baseboard are locked tightly after the angle of the upper baseboard is adjusted. Four cylindrical guide rails are installed at four corners of the upper baseboard, a motor supporting plate is installed on the upper portions of the four cylindrical guide rails, motor supporting plate lock screws on the side face of the motor supporting plate fix the motor supporting plate on the four cylindrical guide rails, a speed regulating motor connected with a speed reducer is installed on the motor supporting plate, one end of a threaded rod which is meshed with the output shaft of the speed reducer is fixedly connected with the center of a movable block board after penetrating through the motor supporting plate, and one end of the model pile is installed on the lower portion of the movable block board. In allusion to implementation of a pressing process of a single mole pile and a model pile group, the pile pressing device for the geotechnical centrifuge model test model pile can adjust the pressing angle and the pressing speed of the model pile, guarantee accuracy of an embedded position of the model pile, and complete the pile pressing process in 1 g and centrifugal environment.
Description
Technical field
The utility model relates to a kind of centrifugal model test device, especially relates to a kind of piling device of geotechnical centrifugal model test Model Pile.
Background technology
Pile foundation is to handle soft layer to improve one of effective engineering measure of bearing capacity of foundation soil, in industrial civil building, road and harbour etc. are built, widely adopts, and pile base construction method can be divided into prefabricated plug-in type and the cast-in-place formula that pours into; But vertical ground is buried underground, also can have an inclination angle to insert with ground.
In recent years along with the development of geotechnical centrifuge experimental technique; The centrifugal acceleration of utilizing geotechnical centrifuge to produce can be dwindled n doubly with the prototype pile foundation; Reproduce the practical working situation of pile foundation; And then parameters such as the distortion, stress of stake after obtaining the bearing capacity of pile foundation and imbedding soil layer, become engineering and scientific research personnel and study pile foundation problem effective ways.
In centrifugal model test, the model preparation is an important job, and the centrifugal model size is little, required precision is high, the manufacturing technology difficulty is big.Error in the patternmaking process, the lighter influences result of the test, the serious test failure that causes.Be pressed in the model clay process as the manual or simple facility of employing in Model Pile, the relative position between the angle of single pile, stake and stake is difficult to be guaranteed, and is bigger to the disturbance of pile peripheral earth, and result of the test accuracy and reliability are affected.It is thus clear that in the pile foundation centrifugal model test, the work that Model Pile is pressed into soil layer is an important procedure, and is careless slightly, with the accuracy that influences test result, take a kind of precision, standardized mechanical piling device is the effective ways that improve test accuracy.
At present, there is the piling device of report that hydraulic pressure and vapour-pressure type are arranged, promptly adopts hydraulic cylinder or pneumatic cylinder Model Pile to be exerted pressure it is got in model clay as going out power apparatus.Adopt the deficiency of above-mentioned two kinds of devices to be: (1) hydraulic cylinder and pneumatic cylinder limited length, the stroke of push rod in the restriction cylinder increases stroke and need change cylinder body, and bothersome, effort, cost are high; (2) hydraulic cylinder and pneumatic cylinder realize that the start pattern of displacement control needs the servo feedback control system of a cover, and cost is higher, and lower push-rod translational speed stability is bad at a slow speed; (3) hydraulic cylinder and pneumatic cylinder need oil sources and source of the gas respectively, need special the construction among the reality, are difficult for obtaining.
Summary of the invention
The purpose of the utility model has been to provide a kind of piling device of geotechnical centrifugal model test Model Pile; This device can be implemented process of press in to a single pile and a clump of piles etc.; That can regulate stake is pressed into angle and speed, guarantee the Model Pile burial place accurately, can be under 1g and Centrifugal Environment (ng; N>1) accomplish the piling process, thus satisfy different centrifugal model test requirements.
The technical scheme that the utility model adopts is:
Base plate in the utility model is made up of lower shoe, middle base plate and upper plate; Middle base plate is fixed through regulating bolt and lower shoe; The rotary shaft rack of upper plate one end and middle base plate one end both sides is hinged; Middle base plate other end both sides are provided with the angular adjustment support; Upper plate other end both sides are provided with the angle adjustment lock screw, and the angle adjustment lock screw is arranged in angular adjustment support deep-slotted chip breaker, lock after the adjusting upper plate angle; Four cylindricality guide rail symmetries are installed on four angles of upper plate; The movable block plate is placed in the middle of the cylindricality guide rail; The motor supporting plate is installed in four cylindricality guide rail tops, and four motor supporting plate lock screws of motor supporting plate side are fixed on the motor supporting plate on four cylindricality guide rails, and the buncher that links to each other with reducer is installed in an end of motor supporting plate; The other end of motor supporting plate is provided with iron balance block; One end of the screw rod that is meshed with reducer output shaft passes the motor supporting plate and is fixed in movable block plate center, and an end of Model Pile is installed in movable block plate bottom, and the other end of Model Pile passes base plate in model.
Be provided with two concentric half-arc grooves around the described lower shoe centre bore, middle base plate is provided with two and regulates the half-arc groove that bolts pass lower shoe, in the adjusting base plate horizontally rotate angle after, bolt is regulated in locking.
The beneficial effect that the utlity model has is:
This device has a plurality of movable mechanisms; Realize the different adjustings that are pressed into position and pile body angle; Have good flexibility and satisfy the different experiments requirement, mainly by spiro rod length and rail length decision, it is simple to change screw rod according to demands of different for the stroke of this device; This device adopts driven by power, and power supply is not had specific (special) requirements, and is easy to use; This device (ng, n>1) under 1g condition and Centrifugal Environment all can use, and satisfies the different tests requirement; Summarize saidly, this apparatus structure is simple, and is easy and simple to handle, technician and service condition required low, and model prepares the precision height, can satisfy different centrifugal test requirements.
Description of drawings
Fig. 1 is the structural principle sketch map of the utility model.
Fig. 2 is the vertical view of the utility model upper plate.
Fig. 3 is the vertical view of base plate in the utility model.
Fig. 4 is the vertical view of the utility model lower shoe.
Among the figure: 1, lower shoe, 2, model, 3, model casing, 4, middle base plate, 5, upper plate; 6, Model Pile, 7, the movable block plate, 8, four cylindricality guide rails, 9, the motor supporting plate, 10, reducer; 11, screw rod, 12, buncher, 13, motor supporting plate lock screw, 14, iron balance block, 15, the locking positioning hole; 16, angle adjustment support, 17, the angle adjustment lock screw, 18, rotary shaft rack, 19, rotating shaft, 20, regulate bolt.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Like Fig. 1, shown in Figure 2, the base plate in the utility model is made up of lower shoe 1, middle base plate 4 and upper plate 5; Middle base plate 4 is fixing with lower shoe 1 through regulating bolt 20; The rotary shaft rack 18 of upper plate 5 one ends and middle base plate 4 one end both sides is hinged; Middle base plate 4 other end both sides are provided with angular adjustment support 16; Upper plate 5 other end both sides are provided with angle adjustment lock screw 17, and angle adjustment lock screw 17 is arranged in angular adjustment support 16 deep-slotted chip breakers, lock after adjusting upper plate 5 angles; Four cylindricality guide rail 8 symmetries are installed on 5 four angles of upper plate; Movable block plate 7 is placed in the middle of the cylindricality guide rail 8; Motor supporting plate 9 is installed in four cylindricality guide rail 8 tops, and four motor supporting plate lock screws 13 of motor supporting plate 9 sides are fixed on motor supporting plate 9 on four cylindricality guide rails 8, and the buncher 12 that links to each other with reducer 10 is installed in an end of motor supporting plate 9; The other end of motor supporting plate 9 is provided with iron balance block; It is afterwards affixed with movable block plate 7 centers that one end of the screw rod 11 that is meshed with reducer 10 output shafts passes motor supporting plate 9, and an end of Model Pile 6 is installed in movable block plate 7 bottoms, and the other end of Model Pile 6 passes base plate in model 2.
Like Fig. 3, shown in Figure 4, be provided with two concentric half-arc grooves around described lower shoe 1 centre bore, middle base plate 4 is provided with two and regulates the half-arc groove that bolts 20 pass lower shoe 1, base plate in the adjusting (4) horizontally rotate angle after, bolt 20 is regulated in locking.
Be the embodiment of the utility model below:
Embodiment 1:
Use in the 1g condition: at first device lies in a horizontal plane on the model casing 3, confirms that the pitching pile position is fixed on lower shoe 1 on the model casing 3 accurately.Then, confirm the length of Model Pile 6 according to test plan, the height of adjustment motor supporting plate 9, adjustment is tightened motor supporting plate lock screw 13 after accomplishing.Insert the angle that horizontally rotates of angle and middle base plate 4 with the lower shoe 1 of base plate 4 and upper plate 5 in the angular adjustment of models 2 according to Model Pile 6; Tighten angle adjustment lock screw 17 after adjustment is accomplished and regulate bolt 20, start buncher 12 and both can carry out the piling operation.
Embodiment 2:
Under Centrifugal Environment (ng, n>1) use: at first device and model casing are placed in the centrifugal basket simultaneously together, confirm the pitching pile position, and lower shoe 1 is fixed on the model casing 3.Then; Confirm the length of Model Pile 6 according to test plan; The height of adjustment motor supporting plate 9, motor supporting plate 9 is fixed on cylindricality guide rail 7 has on the locking positioning hole 15 position, tightens motor supporting plate lock screw 13 and gets in the locking positioning holes 15; And iron balance block 14 is installed, make it and buncher 12 weight balancings.Insert the angle that horizontally rotates of angle and middle base plate 4 with the lower shoe 1 of base plate 4 and upper plate 5 in the angular adjustment of models 2 according to Model Pile 6; Tighten angle adjustment lock screw 17 after adjustment is accomplished and regulate bolt 20, start buncher 12 and both can carry out the piling operation.
If Model Pile 6 is more than 2, should makes special anchor clamps and be contained in movable block plate 7 bottoms.
Drive motors adopts buncher 12, and insertion speed that both can adjustment model stake 6 can reduce the adjustment time that the movable block plate moves up and down again.
Claims (2)
1. the piling device of a geotechnical centrifugal model test Model Pile, it is characterized in that: base plate is made up of lower shoe (1), middle base plate (4) and upper plate (5); Middle base plate (4) is fixing with lower shoe (1) through regulating bolt (20); The rotary shaft rack (18) of upper plate (5) one ends and middle base plate (4) one end both sides is hinged; Middle base plate (4) other end both sides are provided with angular adjustment support (16); Upper plate (5) other end both sides are provided with angle adjustment lock screw (17), and angle adjustment lock screw (17) is arranged in angular adjustment support (16) deep-slotted chip breaker, lock after adjusting upper plate (5) angle; Four cylindricality guide rails (8) symmetry is installed on (5) four angles of upper plate; Movable block plate (7) is placed in the middle of the cylindricality guide rail (8); Motor supporting plate (9) is installed in four cylindricality guide rails (8) top; Four motor supporting plate lock screws (13) of motor supporting plate (9) side are fixed on motor supporting plate (9) on four cylindricality guide rails (8); The buncher (12) that links to each other with reducer (10) is installed in an end of motor supporting plate (9), and the other end of motor supporting plate (9) is provided with iron balance block, and it is affixed with movable block plate (7) center that an end of the screw rod (11) that is meshed with reducer (10) output shaft passes motor supporting plate (9) back; One end of Model Pile (6) is installed in movable block plate (7) bottom, and the other end of Model Pile (6) passes base plate in model (2).
2. the piling device of a kind of geotechnical centrifugal model test Model Pile according to claim 1; It is characterized in that: be provided with two concentric half-arc grooves around described lower shoe (1) centre bore; Middle base plate (4) is provided with two and regulates the half-arc groove that bolts (20) pass lower shoe (1); Base plate in the adjusting (4) horizontally rotate angle after, bolt (20) is regulated in locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220115798 CN202577374U (en) | 2012-03-26 | 2012-03-26 | Pile pressing device for geotechnical centrifuge model test model pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220115798 CN202577374U (en) | 2012-03-26 | 2012-03-26 | Pile pressing device for geotechnical centrifuge model test model pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202577374U true CN202577374U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220115798 Withdrawn - After Issue CN202577374U (en) | 2012-03-26 | 2012-03-26 | Pile pressing device for geotechnical centrifuge model test model pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202577374U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605806A (en) * | 2012-03-26 | 2012-07-25 | 浙江大学 | Pile pressing device for model piles of geotechnical centrifugal model tests |
| CN103790161A (en) * | 2014-02-24 | 2014-05-14 | 同济大学 | Three-dimensional movable SCP forming system in centrifugal test |
| CN107313473A (en) * | 2016-08-22 | 2017-11-03 | 吕凡任 | Pile foundation model test pile crown angle set device |
| CN114658044A (en) * | 2022-05-23 | 2022-06-24 | 交通运输部天津水运工程科学研究所 | Simulation sequence pile inserting device and method for centrifugal model test |
-
2012
- 2012-03-26 CN CN 201220115798 patent/CN202577374U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605806A (en) * | 2012-03-26 | 2012-07-25 | 浙江大学 | Pile pressing device for model piles of geotechnical centrifugal model tests |
| CN102605806B (en) * | 2012-03-26 | 2014-05-21 | 浙江大学 | Pile pressing device for model piles of geotechnical centrifugal model tests |
| CN103790161A (en) * | 2014-02-24 | 2014-05-14 | 同济大学 | Three-dimensional movable SCP forming system in centrifugal test |
| CN107313473A (en) * | 2016-08-22 | 2017-11-03 | 吕凡任 | Pile foundation model test pile crown angle set device |
| CN114658044A (en) * | 2022-05-23 | 2022-06-24 | 交通运输部天津水运工程科学研究所 | Simulation sequence pile inserting device and method for centrifugal model test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121205 Effective date of abandoning: 20140521 |
|
| RGAV | Abandon patent right to avoid regrant |