CN219471036U - Force measuring device for pile foundation pile cap structure hydrodynamic load model test - Google Patents
Force measuring device for pile foundation pile cap structure hydrodynamic load model test Download PDFInfo
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- CN219471036U CN219471036U CN202320524134.8U CN202320524134U CN219471036U CN 219471036 U CN219471036 U CN 219471036U CN 202320524134 U CN202320524134 U CN 202320524134U CN 219471036 U CN219471036 U CN 219471036U
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Abstract
The utility model discloses a force measuring device for a hydrodynamic load model test of a pile foundation bearing platform structure, and belongs to the field of model force measuring devices. The force measuring device comprises a pile group force measuring unit, a bearing platform force measuring unit and a calibration mechanism, wherein a pile group model is arranged on the pile group force measuring unit, the calibration mechanism is arranged on the pile group force measuring unit, the bearing platform force measuring unit is arranged on the calibration mechanism, and the bearing platform model is matched with the pile group model. According to the utility model, the bearing platform model and pile group model stress data are respectively acquired in real time through the two groups of total force instruments, so that the problems of synchronous measurement and accurate measurement of the respective stress of the bearing platform and the pile group when the hydrodynamic load model test of the pile foundation bearing platform structure is carried out are solved, and the calibration mechanism can efficiently, accurately and stably adjust the relative position between the bearing platform model and the pile group model by adjusting the spatial position of the first six-component force instrument, thereby avoiding the test result deviation caused by the model assembly error.
Description
Technical Field
The utility model belongs to the field of model force measuring devices, and particularly relates to a force measuring device for a hydrodynamic load model test of a pile foundation bearing platform structure.
Background
Pile cap structures are common hydraulic structural forms in coastal and offshore projects and are commonly used in projects such as cross-sea bridges, offshore wind power, pier wharfs and the like. The pile foundation cap structure is acted by hydrodynamic loads such as waves, tide and the like, and the stress condition is the key content of engineering feasibility research.
The model test is developed aiming at the stress characteristics of the pile foundation bearing platform structure, and is one of the main means of engineering research. The existing pile foundation pile cap structure model test total force measurement technology has two methods, one is a distributed pressure integration method, and the other is a method for directly measuring the overall stress of a pile cap and a pile group.
The distributed pressure integration method is often caused by the problem that the density of pressure measuring points is small or the representative area has deviation, and the total force obtained by calculation is inaccurate; the method for directly measuring the total force is to ensure the accuracy of the relative positions of the pile cap and the pile group, often the pile cap and the pile group model are integrally processed and the total stress is measured, the model structure cannot give the stress results of the pile cap part or the pile group part which is focused by engineering, and when the elevation relation between the pile cap structure and the still water is calibrated, gaskets with different thicknesses are often placed between the total force instrument and the structural model to adjust the upper position and the lower position of the model.
In summary, the existing method for measuring the total force of the model test can not only solve the problem of separate and synchronous measurement of the stress of the pile cap structure and the pile group structure, but also has the problem of obvious model assembly error, so that a force measuring device for the hydrodynamic load model test of the pile cap structure is urgently needed to solve the technical problems.
Disclosure of Invention
The utility model aims to: a force measuring device for a hydrodynamic load model test of a pile foundation pile cap structure is provided, so as to solve the problems in the prior art.
The technical scheme is as follows: the force measuring device for the hydrodynamic load model test of the pile foundation bearing platform structure comprises a pile group force measuring unit, a bearing platform force measuring unit and a calibration mechanism, wherein the pile group force measuring unit is provided with a pile group model, the calibration mechanism is arranged on the pile group force measuring unit, the bearing platform force measuring unit is arranged on the calibration mechanism, the bearing platform force measuring unit is provided with a bearing platform model, and the bearing platform model is matched with the pile group model;
the pile group force measuring unit comprises a bottom steel frame and a six-component force total force instrument II arranged on the bottom steel frame, and the pile group model is arranged on the six-component force total force instrument II; the bearing platform force measuring unit comprises a six-component force total force instrument I, the six-component force total force instrument I is installed on a calibration mechanism through a connecting bracket, the bearing platform model is installed on the six-component force total force instrument I, and the calibration mechanism is used for adjusting the space position of the bearing platform model.
Further, the calibration mechanism comprises a vertical calibration unit and a horizontal calibration unit, wherein the horizontal calibration unit is arranged above the bottom steel frame in parallel and used for adjusting and controlling the bearing platform model installed on the first six-component force total instrument to be aligned with the pile group model, and the vertical calibration unit is connected between the bottom steel frame and the horizontal calibration unit and used for adjusting and controlling the bearing platform model on the first six-component force total instrument to be close to the pile group model.
Further, the vertical calibration unit comprises a vertical movement steel frame, a screw sleeve, a vertical screw, a vertical worm and a vertical worm wheel, wherein the screw sleeve is installed on the bottom steel frame, the screw sleeve is internally connected with the vertical screw, the top of the vertical screw is connected with the vertical movement steel frame, the vertical worm is movably installed on the vertical movement steel frame, the vertical worm is meshed with the vertical worm wheel, and the vertical worm wheel is installed on the vertical screw.
Further, the horizontal calibration unit comprises a transverse assembly, the transverse assembly comprises a transverse screw rod, a transverse sliding rail, a transverse worm wheel and a transverse movement steel frame, the transverse screw rod is hinged to the vertical movement steel frame, the transverse worm wheel is installed on the transverse screw rod and meshed with the transverse worm rod, the transverse worm rod is installed on the vertical movement steel frame, the transverse sliding rail is installed on the vertical movement steel frame and is arranged in parallel with the transverse screw rod, the transverse sliding rail is connected with the transverse movement steel frame in a sliding mode, and the transverse movement steel frame is connected to the transverse screw rod in a transmission mode.
Further, the horizontal calibration unit further comprises a longitudinal assembly, the longitudinal assembly comprises a longitudinal screw rod, a longitudinal sliding rail, a longitudinal worm wheel and a longitudinal moving steel frame, the longitudinal screw rod is perpendicular to the transverse screw rod and hinged to the transverse moving steel frame, the longitudinal worm wheel is installed on the longitudinal screw rod and meshed with the longitudinal worm, the longitudinal worm is installed on the transverse moving steel frame, the longitudinal sliding rail is installed on the transverse moving steel frame and is parallel to the longitudinal screw rod, the longitudinal sliding rail is connected with the longitudinal moving steel frame in a sliding mode, the longitudinal moving steel frame is in transmission connection with the longitudinal screw rod, and the connecting support is connected to the longitudinal moving steel frame.
Further, a hand wheel or a driving motor is arranged on each of the vertical worm, the horizontal worm and the longitudinal worm and is used for transmission input of the calibration mechanism.
The beneficial effects are that: according to the utility model, the six-component total force instrument II is arranged below the pile group model, the six-component total force instrument I is arranged on the pile cap model, and the two groups of total force instruments respectively acquire stress data of the pile cap model and the pile group model in real time, so that the problems of synchronous measurement and accurate measurement of respective stress of the pile cap and the pile group when a pile cap structure hydrodynamic load model test is carried out are solved, and the calibration mechanism can efficiently, accurately and stably adjust and calibrate the relative positions of the pile cap model and the pile group model by adjusting the spatial position of the six-component total force instrument I, thereby avoiding test result deviation caused by model assembly errors.
Drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is a side view of the present utility model.
Fig. 3 is a top view of the present utility model.
Fig. 4 is a schematic diagram of the structure of the rest pad between the total force gauge and the structural model described in the background art.
The reference numerals are: 1. a vertically moving steel frame; 2. a transversely moving steel frame; 3. longitudinally moving the steel frame; 4. a vertical screw; 5. a vertical worm; 6. a vertical worm wheel; 7. a transverse screw; 8. a transverse slide rail; 9. a transverse worm; 10. a transverse worm wheel; 11. a longitudinal screw; 12. a longitudinal slide rail; 13. a longitudinal worm; 14. a longitudinal worm wheel; 15. a connecting bracket; 16. six component force total force instrument I; 17. six-component total force instrument II; 18. a bottom steel frame; 19. a bearing platform model; 20. pile group model; 21. a screw sleeve; 22. pile foundation cap model; 23. a gasket; 24. total force instrument.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.
As shown in fig. 1-3, a force measuring device for a hydrodynamic load model test of a pile foundation pile cap structure comprises a pile group force measuring unit, a pile cap force measuring unit and a calibration mechanism, wherein the pile group force measuring unit is provided with a pile group model 20, the pile group force measuring unit is provided with the calibration mechanism, the calibration mechanism is provided with the pile cap force measuring unit, the pile cap force measuring unit is provided with a pile cap model 19, and the pile cap model 19 is matched with the pile group model 20; the pile group model 20 is arranged on the pile group force measuring unit, the pile cap model 19 is arranged on the pile group force measuring unit, when the pile foundation pile cap structure hydrodynamic load model test is carried out, the separate measurement and synchronous measurement of hydrodynamic loads such as waves and tides borne by the pile cap part and the pile group part are realized, the calibration mechanism can move with the pile cap model 19 on the pile cap force measuring unit, the spatial positions of the pile group model and the pile group model 20 are accurately and stably corrected, and the test result deviation caused by the model assembly error is avoided.
As shown in fig. 1-2, the pile group force measuring unit comprises a bottom steel frame 18 and a six-component force total instrument II 17 arranged on the bottom steel frame 18, wherein the pile group model 20 is arranged on the six-component force total instrument II 17, and the six-component force total instrument II 17 is used for collecting the force data of the pile group model 20 under the impact of hydrodynamic load in real time; the bearing platform force measuring unit comprises a six-component force total force instrument one 16, the six-component force total force instrument one 16 is installed on a calibration mechanism through a connecting bracket 15, a bearing platform model 19 is installed on the six-component force total force instrument one 16, the calibration mechanism is used for adjusting the space position of the bearing platform model 19, the calibration mechanism moves to the position above the pile group model 20 with the bearing platform model 19 installed on the six-component force total force instrument one 16, and the six-component force total force instrument one 16 is used for measuring the stress data of the bearing platform model 19 impacted by hydrodynamic load.
As shown in fig. 1-3, the calibration mechanism comprises a vertical calibration unit and a horizontal calibration unit, the horizontal calibration unit is arranged above the bottom steel frame 18 in parallel and is used for regulating and controlling the six-component total force instrument 16 of the bearing platform force measuring unit and the bearing platform model 19 to be aligned with the pile group model 20, and the vertical calibration unit is connected between the bottom steel frame 18 and the horizontal calibration unit and is used for regulating and controlling the bearing platform model 19 installed on the six-component total force instrument 16 to be close to the bearing platform model 19. The calibration mechanism is used for adjusting and calibrating the relative positions of the bearing platform model 19 and the pile group model 20 through a horizontal calibration unit, and the integral elevation of the bearing platform model 19 and the six-component total force instrument I16 is adjusted through a vertical calibration unit.
As shown in fig. 1, 2 and 4, the vertical calibration unit comprises a vertical movement steel frame 1, a screw sleeve 21, a vertical screw 4, a vertical worm 5 and a vertical worm wheel 6, wherein the screw sleeve 21 is installed on a bottom steel frame 18, the screw sleeve 21 is internally connected with the vertical screw 4, the top of the vertical screw 4 is connected with the vertical movement steel frame 1, the vertical worm 5 is movably installed on the vertical movement steel frame 1, the vertical worm 5 is meshed with the vertical worm wheel 6, and the vertical worm wheel 6 is installed on the vertical screw 4. Install a plurality of lead screw sleeves 21 on the bottom steelframe 18, install four lead screw sleeves 21 that are the rectangle and distribute on the preferential bottom steelframe 18, through rotating vertical worm 5 under the transmission effect of vertical worm wheel 6, vertical lead screw 4 rotates in lead screw sleeve 21, thereby realize the position control of vertical lead screw 4 in lead screw sleeve 21, reach the purpose of regulating and controlling vertical motion steelframe 1 high position, and side transmission possesses unidirectionality and auto-lock nature between vertical worm 5 and the vertical worm wheel 6, the lead angle of vertical worm 5 and vertical worm wheel 6 is less promptly, make the worm can drive the worm wheel but the worm wheel can not drive the worm. Compared with the traditional method for controlling the elevation between the total force instrument 24 and the pile foundation cap model 22 by adding the gaskets 23, the elevation control method is more efficient, accurate and stable through the vertical calibration unit.
As shown in fig. 1-3, the horizontal calibration unit comprises a transverse assembly, the transverse assembly comprises a transverse screw rod 7, a transverse sliding rail 8, a transverse worm 9, a transverse worm wheel 10 and a transverse moving steel frame 2, the transverse screw rod 7 is hinged to the vertical moving steel frame 1, the transverse worm wheel 10 is installed on the transverse screw rod 7, the transverse worm wheel 10 is meshed with the transverse worm 9, the transverse worm 9 is installed on the vertical moving steel frame 1, the transverse sliding rail 8 is installed on the vertical moving steel frame 1 and is arranged parallel to the transverse screw rod 7, the transverse sliding rail 8 is connected with the transverse moving steel frame 2 in a sliding manner, and the transverse moving steel frame 2 is connected to the transverse screw rod 7 in a transmission manner. The transverse assembly inputs driving force through a transverse worm 9 and is transmitted to the transverse screw rod 7 through a transverse worm wheel 10, the transverse screw rod 7 rotates to enable the transverse moving steel frame 2 in threaded connection with the transverse screw rod to move along the axial direction of the transverse screw rod 7, and the moving process is guided and supported by the transverse sliding rail 8. Similarly, the lead angles of the transverse worm 9 and the transverse worm wheel 10 are small, so that the worm can drive the worm wheel but the worm wheel cannot drive the worm, thereby having unidirectionality and self-locking property. The horizontal calibration unit is stable and accurate in regulation and control of the transverse movement steel frame 2, and plays an important role in the horizontal adjustment bearing platform force measuring unit.
As shown in fig. 1-3, the horizontal calibration unit further comprises a longitudinal assembly, the longitudinal assembly comprises a longitudinal screw rod 11, a longitudinal sliding rail 12, a longitudinal worm 13, a longitudinal worm wheel 14 and a longitudinal moving steel frame 3, the longitudinal screw rod 11 is perpendicular to the transverse screw rod 7 and hinged to the transverse moving steel frame 2, the longitudinal worm wheel 14 is installed on the longitudinal screw rod 11, the longitudinal worm wheel 14 is meshed with the longitudinal worm 13, the longitudinal worm 13 is installed on the transverse moving steel frame 2, the longitudinal sliding rail 12 is installed on the transverse moving steel frame 2 and is parallel to the longitudinal screw rod 11, the longitudinal sliding rail 12 is slidingly connected with the longitudinal moving steel frame 3, the longitudinal moving steel frame 3 is in transmission connection with the longitudinal screw rod 11, and the connecting support 15 is connected to the longitudinal moving steel frame 3. Similarly, the lead angles of the longitudinal worm 13 and the longitudinal worm wheel 14 are small, so that the worm can drive the worm wheel but the worm wheel cannot drive the worm, thereby having unidirectionality and self-locking property. The longitudinal components and the transverse components are vertically distributed, have the same working principle and play an important role in horizontally adjusting the bearing platform force measuring unit.
As shown in fig. 1-3, the vertical worm 5, the horizontal worm 9 and the longitudinal worm 13 are all provided with a hand wheel or a driving motor for calibrating the transmission input of the mechanism. All vertical worms 5 on the vertical calibration unit need to be synchronously driven to ensure synchronous movement of a plurality of vertical screws 4.
When the device is used, the six-component total force instrument II 17 is arranged in the middle of the bottom steel frame 18, the pile group model 20 is placed on the six-component total force instrument II 17, then the bearing platform model 19 is installed on the six-component total force instrument I16, the bearing platform model 19 is adjusted to be above the pile group model 20 through the calibration mechanism, the elevation is adjusted to a proper position, the small gap between the bearing platform model 19 and the pile group model 20 ensures that the two models do not interfere with each other in the testing process while ensuring the model precision, the specific working process of the calibration mechanism comprises horizontal adjustment and vertical adjustment, the horizontal adjustment is divided into horizontal adjustment and vertical adjustment, the horizontal adjustment is further divided into horizontal adjustment and vertical adjustment, the horizontal adjustment is transmitted to the horizontal screw rod 7 through a hand wheel or a driving motor of the horizontal component, the driving force of the horizontal screw rod 9 is transmitted to the horizontal screw rod 7 through the horizontal worm wheel 10, the rotation of the horizontal screw rod 7 enables the horizontal movement steel frame 2 to move on the horizontal slide rail 8, and the longitudinal component is arranged on the horizontal slide rail 8 along the horizontal component, the longitudinal component moves along with the horizontal component to be above the horizontal coordinate position of the pile group model 20, the longitudinal adjustment is started, the longitudinal adjustment is driven by a hand wheel or a driving motor of the longitudinal worm 13 of the longitudinal component, and the longitudinal worm wheel 13 drives the longitudinal screw rod 11 to move along the longitudinal slide rail 11 along the longitudinal slide rail 12 through the longitudinal direction of the longitudinal rail component 11, and the longitudinal screw rod 11; the vertical adjustment is driven by synchronously driving all vertical worms 5 of the vertical calibration unit, the power of the vertical worms 5 is transmitted to the vertical screw rods 4 through the vertical worm wheels 6, the vertical screw rods 4 are matched with screw rod sleeves 21, the vertical screw rods 4 are lowered until the six-component total force instrument 16 is adjusted to the required vertical coordinates with the bearing platform model 19, the debugging of the force measuring device for the hydrodynamic load model test is completed, the model can be impacted by the hydrodynamic force such as waves and tide, and the stress conditions of the pile group model 20 and the bearing platform model 19 are respectively acquired through the six-component total force instrument 16 and the six-component total force instrument 17.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solutions of the present utility model within the scope of the technical concept of the present utility model, and these equivalent changes all fall within the scope of the present utility model.
Claims (6)
1. The force measuring device for the hydrodynamic load model test of the pile foundation bearing platform structure is characterized by comprising a pile group force measuring unit, a bearing platform force measuring unit and a calibration mechanism, wherein a pile group model (20) is arranged on the pile group force measuring unit, the calibration mechanism is arranged on the pile group force measuring unit, the bearing platform force measuring unit is arranged on the calibration mechanism, a bearing platform model (19) is arranged on the bearing platform force measuring unit, and the bearing platform model (19) is matched with the pile group model (20);
the pile group force measuring unit comprises a bottom steel frame (18) and a six-component force total instrument II (17) arranged on the bottom steel frame (18), and the pile group model (20) is arranged on the six-component force total instrument II (17); the bearing platform force measurement unit comprises a six-component force total instrument I (16), the six-component force total instrument I (16) is installed on a calibration mechanism through a connecting bracket (15), the bearing platform model (19) is installed on the six-component force total instrument I (16), and the calibration mechanism is used for adjusting the spatial position of the bearing platform model (19).
2. The force measuring device for the hydrodynamic load model test of the pile foundation bearing platform structure according to claim 1, wherein the calibration mechanism comprises a vertical calibration unit and a horizontal calibration unit, the horizontal calibration unit is arranged above the bottom steel frame (18) in parallel and used for regulating and controlling the bearing platform model (19) installed on the six-component total force instrument (16) to be aligned with the pile group model (20), and the vertical calibration unit is connected between the bottom steel frame (18) and the horizontal calibration unit and used for regulating and controlling the bearing platform model (19) on the six-component total force instrument (16) to be close to the pile group model (20).
3. The force measuring device for the pile foundation pile cap structure hydrodynamic load model test according to claim 2, wherein the vertical calibration unit comprises a vertical motion steel frame (1), a screw sleeve (21), a vertical screw (4), a vertical worm (5) and a vertical worm wheel (6), the screw sleeve (21) is installed on a bottom steel frame (18), the vertical screw (4) is connected in the screw sleeve (21), the vertical motion steel frame (1) is connected to the top of the vertical screw (4), the vertical worm (5) is movably installed on the vertical motion steel frame (1), the vertical worm (5) is meshed with the vertical worm wheel (6), and the vertical worm wheel (6) is installed on the vertical screw (4).
4. A force measurement device for pile foundation cap structure hydrodynamic load model test according to claim 3, characterized in that, horizontal calibration unit includes horizontal subassembly, horizontal subassembly includes horizontal lead screw (7), horizontal slide rail (8), horizontal worm (9), horizontal worm wheel (10) and horizontal motion steelframe (2), horizontal lead screw (7) articulates on vertical motion steelframe (1), install horizontal worm wheel (10) on horizontal lead screw (7), horizontal worm wheel (10) and horizontal worm (9) meshing, horizontal worm (9) are installed on vertical motion steelframe (1), horizontal slide rail (8) are installed on vertical motion steelframe (1) to with horizontal lead screw (7) parallel arrangement, sliding connection has horizontal motion steelframe (2) on horizontal slide rail (8), horizontal motion steelframe (2) transmission is connected on horizontal lead screw (7).
5. The force measuring device for the hydrodynamic load model test of the pile foundation bearing platform structure according to claim 4, wherein the horizontal calibration unit further comprises a longitudinal assembly, the longitudinal assembly comprises a longitudinal screw rod (11), a longitudinal sliding rail (12), a longitudinal worm (13), a longitudinal worm wheel (14) and a longitudinal moving steel frame (3), the longitudinal screw rod (11) is perpendicular to the transverse screw rod (7) and hinged to the transverse moving steel frame (2), the longitudinal screw rod (11) is provided with the longitudinal worm wheel (14), the longitudinal worm wheel (14) is meshed with the longitudinal worm (13), the longitudinal worm (13) is arranged on the transverse moving steel frame (2), the longitudinal sliding rail (12) is arranged on the transverse moving steel frame (2) in parallel with the longitudinal screw rod (11), the longitudinal sliding rail (12) is connected with the longitudinal moving steel frame (3) in a sliding manner, the longitudinal moving steel frame (3) is in transmission connection with the longitudinal screw rod (11), and the connecting bracket (15) is connected to the longitudinal moving steel frame (3).
6. The force measuring device for the hydrodynamic load model test of the pile foundation pile cap structure according to claim 5, wherein a hand wheel or a driving motor is arranged on each of the vertical worm (5), the horizontal worm (9) and the longitudinal worm (13) for transmission input of a calibration mechanism.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022227671207 | 2022-10-20 | ||
| CN202222767120 | 2022-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219471036U true CN219471036U (en) | 2023-08-04 |
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ID=87435911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320524134.8U Active CN219471036U (en) | 2022-10-20 | 2023-03-17 | Force measuring device for pile foundation pile cap structure hydrodynamic load model test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219471036U (en) |
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2023
- 2023-03-17 CN CN202320524134.8U patent/CN219471036U/en active Active
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