CN116335208A - Multidirectional loading detection device and detection method for pile foundation bearing capacity - Google Patents
Multidirectional loading detection device and detection method for pile foundation bearing capacity Download PDFInfo
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- CN116335208A CN116335208A CN202310074163.3A CN202310074163A CN116335208A CN 116335208 A CN116335208 A CN 116335208A CN 202310074163 A CN202310074163 A CN 202310074163A CN 116335208 A CN116335208 A CN 116335208A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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Abstract
The invention provides a multi-directional loading detection device and a detection method for pile foundation bearing capacity, wherein the detection device comprises a frame and a detection unit, the detection unit comprises a first motor, an arc-shaped supporting plate, a sliding seat, an arc-shaped sliding groove, a power mechanism and a loading assembly, the loading assembly comprises a hydraulic cylinder, a mounting plate, a pressing plate and a pressure sensor, the detection device also comprises a protection assembly, the protection assembly comprises a plurality of protection rods, a protection net, a shearing fork mechanism and a driving mechanism, and the detection device also comprises a fixing assembly, wherein the fixing assembly comprises a drill rod, a third motor, an elastic plate, a dowel and a turntable; the protection assembly is arranged, so that the protection can be performed, and the safety is improved; through setting up fixed subassembly, along with loading increase, the elastic plate takes place to warp and with the area of contact support on ground increase gradually, progressively improves device stability.
Description
Technical Field
The invention belongs to the technical field of building engineering detection, and particularly relates to a multidirectional loading detection device and method for pile foundation bearing capacity.
Background
The deep foundation consisting of piles and pile caps connected with the tops of the piles (or the single pile foundation consisting of the piles connected with the pile foundations, which is called a pile foundation, is usually used for supporting a building, so that the pile foundations need to be detected for bearing capacity after being processed;
chinese patent CN 114908816A discloses a concrete pile foundation bearing capacity detecting device, comprising a base, a central hole is arranged on the base, and a movable wheel is arranged at the bottom of the base; the position adjusting assembly comprises two anchor rods arranged on two adjacent sides of the base, and the anchor rods are connected with the base through first hydraulic telescopic rods; two support plates; the two ends of the bearing plate are respectively connected with the two bearing plates in a sliding way, four positioning plates are uniformly arranged along the circumferential direction of the center of the bottom surface of the bearing plate, each positioning plate is provided with a displacement sensor, and the two opposite positioning plates and the telescopic ends of the first hydraulic telescopic rod are positioned on the same straight line; the bearing frame is positioned above the bearing plate, and the central line of the bearing frame is overlapped with the central line of the bearing plate; the balancing weights are respectively arranged in the bearing frame, and the central lines of the balancing weights are respectively overlapped with the central line of the bearing frame.
In the above-mentioned patent, when carrying out the detection of bearing capacity to the pile foundation, only can detect the bearing capacity of pile foundation in vertical direction, however, in actual conditions, the atress of pile foundation is not only vertical, also has the atress condition of other directions to prior art can't carry out multidirectional detection.
Disclosure of Invention
The invention provides a multidirectional loading detection device for pile foundation bearing capacity, and aims to solve the problems.
The invention is realized in such a way that a multidirectional loading detection device for pile foundation bearing capacity comprises:
the bottom of the frame is provided with a through hole for the pile foundation to pass through;
a detection unit mounted on the frame, the detection unit comprising:
the output shaft of the first motor is coaxially arranged with the through hole;
an arc-shaped supporting plate fixed on the output shaft of the first motor;
the sliding seat is slidably arranged on the arc-shaped supporting plate, and an arc-shaped chute for sliding connection of the sliding seat is formed in the inner side wall of the arc-shaped supporting plate;
the power mechanism is arranged on the arc-shaped supporting plate and used for driving the sliding seat to slide along the arc-shaped sliding groove;
and the loading assembly is arranged on the sliding seat and is used for applying load to the pile foundation.
Preferably, the loading assembly comprises:
the hydraulic cylinder is fixedly connected with the sliding seat;
the mounting plate is fixed at the telescopic end of the hydraulic cylinder, and a displacement sensor is connected between the mounting plate and the shell of the hydraulic cylinder;
the pressing plate is arranged on one side of the mounting plate, which is far away from the hydraulic cylinder, a plurality of connecting pins are fixed at intervals in the circumferential direction at the edge of the pressing plate, and the top ends of the connecting pins movably penetrate through the mounting plate and are provided with convex rings;
and the pressure sensor is arranged between the mounting plate and the pressing plate.
Preferably, the power mechanism includes:
the second motor is fixed on a support lug fixed on the arc-shaped supporting plate, and the axis of the output shaft of the second motor passes through the circle center of the arc-shaped chute;
the connecting rod is fixed on the output shaft of the second motor and is fixedly connected with the sliding seat.
Preferably, a plurality of vertical telescopic rods are fixed on the frame, the bottom ends of the telescopic rods are provided with moving wheels, and a containing cavity for containing the moving wheels is formed in the frame.
Preferably, the pressure sensor is provided with a plurality of pressure sensors, one pressure sensor is fixedly connected to the center positions of the mounting plate and the pressing plate, other pressure sensors are circumferentially arranged on the outer side of the pressure sensor at intervals and are respectively connected with sliding grooves formed in the mounting plate in a sliding mode, and the mounting plate is provided with an adjusting mechanism for adjusting the positions of other pressure sensors.
Preferably, the adjusting mechanism includes:
a disc rotatably installed in the mounting plate, a poking pin is fixed on the disc, the poking pin extends to the upper part of the mounting plate and is provided with an arc groove for the poking pin to move;
and connecting rods hinged to other pressure sensors respectively, and one end of each connecting rod, which is far away from the pressure sensor, is eccentrically hinged with the disc.
Preferably, the protective assembly is further comprised, the protective assembly comprising:
the protection rods are arranged on the outer side of the frame in a surrounding manner and are arranged at intervals in the vertical direction, the protection rods are connected with the frame in a sliding manner, and protection nets are connected between adjacent protection rods and between the bottommost protection rod and the frame;
the middle hinge pin of each shear fork mechanism is hinged with one protection rod respectively;
and the driving mechanism is used for driving the scissor mechanism to stretch and retract.
Preferably, the driving mechanism includes:
a bidirectional screw rod rotatably mounted on the frame;
the motor is fixed on the frame and used for driving the bidirectional screw rod to rotate;
the two inner thread sleeves are respectively hinged with two end parts of the bottom of the shearing fork mechanism.
Preferably, the fixing assembly is used for fixing the frame on the ground, and the fixing assembly comprises:
the drill rod is threaded on the rack and used for drilling into the ground;
the third motor is fixed on the frame, a turntable is fixed on an output shaft of the third motor, and the third motor is electrically connected with the pressure sensor through the controller;
an elastic plate hinged on the frame and positioned at one side of the turntable far away from the third motor, wherein a plurality of inserted nails are fixed on the elastic plate;
the elastic plate is provided with a movable groove for the pin shaft to be inserted and move;
the elastic plate is internally provided with a cavity, a piston is arranged in the cavity, an elastic rod is fixedly connected to the piston, the elastic rod extends into the movable groove and is hinged to the pin shaft, an air bag communicated with the cavity is arranged in the inserted rod, and rotating beads are eccentrically and rotatably arranged on two sides of the air bag.
On the other hand, the detection method of the multidirectional loading detection device based on the pile foundation bearing capacity comprises the following steps:
the sliding seat is positioned right above the pile foundation by the moving device, vertical load is applied to the pile foundation by the loading assembly, and the bearing capacity of the pile foundation in the vertical direction is detected;
the sliding seat and the loading assembly on the sliding seat are driven by the power mechanism to slide along the arc-shaped sliding groove, and the direction of the loading assembly for applying load to the pile foundation is adjusted;
the arc-shaped supporting plate is driven by the first motor to rotate around the pile foundation, and the detection direction is adjusted.
Compared with the prior art, the invention has the following beneficial effects:
1. applying vertical load to the pile foundation through the loading assembly, detecting the bearing capacity of the pile foundation in the vertical direction, driving the sliding seat and the loading assembly on the sliding seat to slide along the arc chute through the power mechanism, and adjusting the angle of the loading assembly, so as to adjust the direction of the loading assembly for applying the load to the pile foundation, detecting the bearing capacity of the pile foundation in different directions, driving the arc supporting plate to rotate around the pile foundation through the first motor, further adjusting the detection direction, and carrying out multi-directional loading detection on the pile foundation;
2. the driving mechanism drives the shearing fork mechanism to extend, the shearing fork mechanism drives all the protection rods to ascend, the protection rods drive the protection net to open, protection can be carried out, accidents are prevented from happening during detection, workers are prevented from being hurt, and the safety is improved;
3. according to the multidirectional loading detection device for pile foundation bearing capacity, provided by the invention, the fixing assembly is arranged, the elastic plate deforms along with the increase of loading, the contact supporting area with the ground is gradually increased, and the stability of the device is gradually improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment 1 of a multi-directional loading detection device for pile foundation bearing capacity provided by the invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of the internal structure of the mounting plate of FIG. 1;
FIG. 4 is a schematic view of the installation of the pressure sensor of FIG. 3;
fig. 5 is a schematic structural view of embodiment 2;
FIG. 6 is a schematic view of the shield assembly of FIG. 5;
fig. 7 is a schematic structural view of embodiment 3;
fig. 8 is an enlarged view at a in fig. 7.
Description of the embodiments
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and the embodiments and features in the embodiments in the present application may be combined with each other without conflict, and the present invention will be described in detail below with reference to the drawings and with reference to the embodiments.
Examples
The embodiment of the invention provides a multi-directional loading detection device for pile foundation bearing capacity, which is shown in fig. 1-4 and comprises the following components:
the pile foundation pile comprises a frame 1, wherein a through hole 6 for a pile foundation 101 to pass through is formed in the bottom of the frame 1, and specifically, the frame 1 comprises a bottom plate, a top plate and a plurality of connecting columns fixedly connected between the bottom plate and the top plate;
a detection unit mounted on the frame 1, the detection unit comprising:
the first motor 15 fixed on the frame 1 can be fixed through bolts, an output shaft of the first motor 15 and the through hole 6 are coaxially arranged, and the first motor 15 is preferably a stepping motor;
the arc-shaped supporting plate 3 fixed on the output shaft of the first motor 15 can be fixed by welding;
preferably, the roller 5 is installed at the bottom of the arc-shaped supporting plate 3, the roller 5 can roll on the frame 1, an annular rolling groove 18 for supporting the roller 5 is formed in the upper surface of the frame 1, stability of the arc-shaped supporting plate 3 is improved, a connecting block 16 can be fixed on the arc-shaped supporting plate 3, and an annular sliding groove 35 in sliding connection with the connecting block 16 is formed in the frame 1;
the sliding seat 102 is slidably mounted on the arc-shaped supporting plate 3, preferably, an arc-shaped chute 354 for slidably connecting the sliding seat 102 is formed on the inner side wall of the arc-shaped supporting plate 3, and the corresponding central angle of the arc-shaped chute 354 is not less than 90 degrees;
the power mechanism is arranged on the arc-shaped supporting plate 3 and is used for driving the sliding seat 102 to slide along the arc-shaped sliding groove 354;
a loading assembly mounted on the slide 102 for applying a load to the pile foundation 101.
During detection, the moving device enables the sliding seat 102 to be located right above the pile foundation 101, vertical load is applied to the pile foundation 101 through the loading assembly, the bearing capacity of the pile foundation 101 in the vertical direction is detected, then the sliding seat 102 and the loading assembly on the sliding seat are driven by the power mechanism to slide along the arc-shaped sliding groove 354, the angle of the loading assembly is adjusted, the direction of the loading assembly for applying the load to the pile foundation 101 is adjusted, the bearing capacity of the pile foundation 101 in different directions is detected, the arc-shaped supporting plate 3 is driven by the first motor 15 to rotate around the pile foundation 101, the detection direction is further adjusted, the pile foundation 101 can be subjected to multi-directional loading detection, and more use requirements are met;
wherein the loading assembly comprises:
the hydraulic cylinder 12 fixedly connected with the sliding seat 102 can be fixed through bolts;
the displacement sensor 11 is connected between the mounting plate 13 and the shell of the hydraulic cylinder 12, and the displacement sensor 11 is used for detecting the settlement or offset of the pile foundation 101;
the pressing plate 9 is arranged on one side of the mounting plate 13 far away from the hydraulic cylinder 12, a plurality of connecting pins 14 are fixed at intervals in the circumferential direction at the edge of the pressing plate 9, the top ends of the connecting pins 14 movably penetrate through the mounting plate 13 and are provided with convex rings, and the convex rings prevent the connecting pins 14 from being separated from the mounting plate 13;
a pressure sensor 10 is arranged between the mounting plate 13 and the pressing plate 9, and the pressure sensor 10 is used for detecting the force applied by the hydraulic cylinder 12 to the pile foundation 101.
It will be appreciated that by extension of the hydraulic cylinder 12, a force is applied to the mounting plate 13, and then the mounting plate 13 applies a force to the platen 9 via the pressure sensor 10, the platen 9 applies a force to the pile foundation 101 for detection.
Specifically, the power mechanism includes:
the second motor 7 is fixed on a support lug fixed on the arc-shaped supporting plate 3, the support lug can be integrally arranged with the arc-shaped supporting plate 3, the axis of the output shaft of the second motor 7 passes through the circle center of the arc-shaped chute 354, and the second motor 7 is preferably a stepping motor;
the connecting rod 8 fixed on the output shaft of the second motor 7 can be welded and fixed, and the connecting rod 8 is fixedly connected with the sliding seat 102;
the connecting rod 8 is driven to rotate by the second motor 7, the connecting rod 8 drives the sliding seat 102 to slide along the arc-shaped sliding groove 354, two groups of opposite power mechanisms can be arranged, and the two groups of power mechanisms work synchronously, so that the sliding seat 102 moves more stably;
further, a plurality of vertical telescopic rods 2 are fixed on the frame 1 and can be fixed by screws, the telescopic rods 2 can be electric push rods or hydraulic rods, moving wheels 17 are installed at the bottom ends of the telescopic rods 2, the moving wheels 17 are preferably universal wheels, and a containing cavity for containing the moving wheels 17 is formed in the frame 1;
it can be understood that the telescopic rod 2 stretches, the telescopic rod 2 drives the moving wheel 17 to move downwards to move out of the accommodating cavity and contact and support with the ground, so that the device is convenient to move, when in detection, the telescopic rod 2 shortens and drives the moving wheel 17 to enter the accommodating cavity, then the frame 1 contacts and supports with the ground, the supporting area is larger, and the stability of the device during detection is improved;
in a specific implementation, the pressure sensor 10 is provided with a plurality of pressure sensors 10, one pressure sensor 10 is fixedly connected to the center positions of the mounting plate 13 and the pressing plate 9, and can be fixed by screws, other pressure sensors 10 are circumferentially arranged at the outer side of the pressure sensor 10 at intervals and are respectively connected with sliding grooves 35 formed in the mounting plate 13 in a sliding manner, preferably the sliding direction of the other pressure sensors 10 is along the radial direction of the mounting plate 13, and an adjusting mechanism is arranged on the mounting plate 13 and used for adjusting the positions of the other pressure sensors 10;
it should be explained that, in the existing detection device, only one pressure sensor 10 is generally arranged at the central position, however, the contact surface of the pile foundation 101 and the loading component is not only the area of one pressure sensor 10, but also the contact surfaces of pile foundations 101 with different sizes are different, if only one pressure sensor 10 is adopted, only pressure data in a smaller range can be collected, and for a larger contact surface, the pressure data is not accurate enough, so that the pressure data of the larger contact surface can be detected by arranging a plurality of pressure sensors 10, and the positions of other pressure sensors 10 can be regulated by the regulating mechanism, so that the detection range is regulated, and the detection device is suitable for pile foundation 101 contact surfaces with different sizes;
wherein, adjustment mechanism includes:
the disc 34 is rotatably arranged in the mounting plate 13 and can be rotatably arranged through a bearing, the poking pin 36 is fixed on the disc 34, the poking pin 36 extends to the upper part of the mounting plate 13 and is provided with an arc groove for the poking pin 36 to move;
the other pressure sensors 10 are respectively hinged with connecting rods 33, and one end of each connecting rod 33 away from the pressure sensor 10 is eccentrically hinged with a disc 34;
the disc 34 is rotated by the poking pin 36, and the disc 34 drives other pressure sensors 10 to synchronously move through the plurality of connecting rods 33 to adjust the positions.
Examples
The present embodiment further includes, on the basis of embodiment 1, a protection assembly, as shown in fig. 5 to 6, including:
the protection device comprises a plurality of protection rods 19 which are arranged on the outer side of a frame 1 in a surrounding manner and are arranged at intervals in the vertical direction, wherein the protection rods 19 are in sliding connection with the frame 1, sliding blocks can be arranged on the protection rods 19 and are in sliding connection with sliding rails on the frame 1, and protection nets 21 are connected between adjacent protection rods 19 and between the bottommost protection rod 19 and the frame 1;
a scissor mechanism 20 connected between the plurality of guard bars 19, each middle hinge pin of the scissor mechanism 20 being hinged with one guard bar 19;
the driving mechanism is connected with the shearing fork mechanism 20 and is used for driving the shearing fork mechanism 20 to stretch and retract;
during detection, the driving mechanism drives the shearing mechanism 20 to extend, the shearing mechanism 20 drives all the protection rods 19 to ascend, the protection rods 19 drive the protection net 21 to open, protection can be carried out, accidents during detection are prevented, workers are prevented from being injured, after detection is completed, the driving mechanism drives the shearing mechanism 20 to shorten, the shearing mechanism 20 drives all the protection rods 19 to descend, and the protection rods 19 drive the protection net 21 to retract;
wherein, the actuating mechanism includes:
the bidirectional screw rod 23 is rotatably arranged on the frame 1 and can be rotatably arranged through a bearing;
the motor 22 fixed on the frame 1 can be fixed by screws and is used for driving the bidirectional screw rod 23 to rotate, and an output shaft of the motor 22 can be fixedly connected with the bidirectional screw rod 23 by a coupler;
the two inner thread sleeves 24 are respectively hinged with two end parts at the bottom of the scissor mechanism 20, the motor 22 drives the two-way screw rod 23 to rotate, the two-way screw rod 23 drives the inner thread sleeves 24 to move, and the inner thread sleeves 24 drive the scissor mechanism 20 to stretch and retract.
Examples
This embodiment further includes a fixing assembly for fixing the frame 1 to the ground, as shown in fig. 7 to 8, on the basis of embodiment 2, the fixing assembly including:
the drill rod is threaded on the frame 1 and used for drilling into the ground;
the third motor fixed on the frame 1 can be fixed through bolts, a rotary table 25 is fixed on an output shaft of the third motor, and can be fixed through welding, the third motor is electrically connected with the pressure sensor 10 through a controller, the controller is preferably a single-chip microcomputer, and the third motor is a stepping motor;
an elastic plate 26 hinged on the frame 1 and located at one side of the turntable 25 far away from the third motor, wherein a plurality of pins 30 are fixed on the elastic plate 26, preferably, the pins 30 are in a convex arc shape, the center of a circle coincides with the rotation center of the elastic plate 26, and the elastic plate 26 can be made of rubber or the like;
the pin shaft eccentrically fixed on the turntable 25 can be fixed by a screw, and the elastic plate 26 is provided with a movable groove for the pin shaft to be inserted and movable;
when the value of the pressure sensor 10 is continuously increased, a signal is fed back to the controller, the controller controls the continuous rotation, the third motor drives the pin shaft to rotate downwards, the pin shaft drives the elastic plate 26 to rotate downwards, the tail end of the elastic plate 26 is gradually contacted with the ground for supporting, the elastic plate 26 is deformed and the contact supporting area with the ground is gradually increased along with the continuous downward rotation of the elastic plate 26, the stability is gradually improved along with the increase of loading, and the inserted pin 30 on the elastic plate 26 is inserted into a deeper position of the ground, like a claw firmly grabs the ground, so that the stability is further improved;
in a specific implementation, the elastic plate 26 is internally provided with chambers 27, the chambers 27 with the same number as the inserted bars can be arranged, the chambers 27 are in one-to-one correspondence with the inserted bars, the chambers 27 are internally provided with pistons 29, the pistons 29 are fixedly connected with elastic bars 28, the elastic bars 28 extend into the movable grooves and are hinged with the pin shafts, the elastic bars 28 and the pistons 29 can be integrally arranged, sealing rings can be arranged to improve the sealing effect, the inserted bars are internally provided with air bags 32 communicated with the chambers 27, and the two sides of the air bags 32 are eccentrically and rotatably provided with rotating beads 31;
as shown in fig. 8, when the turntable 25 drives the pin shaft to move in the movable groove, the elastic rod 28 is pulled to move leftwards, the elastic rod 28 drives the piston 29 to move leftwards, the piston 29 pushes air in the cavity 27 into the air bag 32, the air bag 32 expands to extrude the rotating beads 31 out of the inserted rod into soil, the effect of expansion and tensioning is further achieved, and the connection stability of the inserted rod and the soil is improved.
In summary, the working principle of the invention is as follows:
during detection, the sliding seat 102 is positioned right above the pile foundation 101 by the moving device, the driving mechanism drives the shearing fork mechanism 20 to extend, the shearing fork mechanism 20 drives all the protection rods 19 to ascend, the protection rods 19 drive the protection net 21 to open, protection can be carried out, and accidents and staff injury during detection are prevented;
then, a vertical load is applied to the pile foundation 101 through a loading assembly, the bearing capacity of the pile foundation 101 in the vertical direction is detected, when the numerical value of the pressure sensor 10 is continuously increased, a signal is fed back to the controller, the controller controls the continuous rotation, the third motor drives the pin shaft to rotate downwards, the pin shaft drives the elastic plate 26 to rotate downwards, the tail end of the elastic plate 26 is gradually contacted and supported with the ground, the elastic plate 26 deforms and the contact supporting area with the ground is gradually increased along with the continuous downward rotation of the elastic plate 26, the stability is gradually improved along with the increase of the loading, and the inserted pins 30 on the elastic plate 26 are inserted into deeper positions on the ground, like claws firmly grasp the ground, so that the stability is further improved;
the sliding seat 102 and the loading assembly on the sliding seat 102 can be driven by the power mechanism to slide along the arc sliding groove 354, the angle of the loading assembly is adjusted, so that the direction of the loading assembly applying load to the pile foundation 101 is adjusted, the bearing capacity of the pile foundation 101 in different directions is detected, the arc supporting plate 3 is driven by the first motor 15 to rotate around the pile foundation 101, the detection direction is further adjusted, the pile foundation 101 can be subjected to multidirectional loading detection, the positions of other pressure sensors 10 can be adjusted by the adjusting mechanism, the detection range is adjusted, and the method is suitable for pile foundation 101 contact surfaces with different sizes;
after detection is completed, the driving mechanism drives the shearing fork mechanism 20 to shorten, the shearing fork mechanism 20 drives all the protection rods 19 to descend, and the protection rods 19 drive the protection net 21 to retract.
It should be noted that, for simplicity of description, the foregoing embodiments are all illustrated as a series of acts, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts, as some steps may be performed in other order or concurrently in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, such as the above-described division of units, merely a division of logic functions, and there may be additional manners of dividing in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or communication connection shown or discussed as being between each other may be an indirect coupling or communication connection between devices or elements via some interfaces, which may be in the form of telecommunications or otherwise.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention. It will be apparent that the described embodiments are merely some, but not all, embodiments of the invention. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present invention or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present invention, which also falls within the scope of the present invention.
Claims (10)
1. A multi-directional loading detection device for pile foundation bearing capacity, comprising:
the bottom of the frame is provided with a through hole for the pile foundation to pass through;
install the detecting element in the frame, its characterized in that: the detection unit includes:
the output shaft of the first motor is coaxially arranged with the through hole;
an arc-shaped supporting plate fixed on the output shaft of the first motor;
the sliding seat is slidably arranged on the arc-shaped supporting plate, and an arc-shaped chute for sliding connection of the sliding seat is formed in the inner side wall of the arc-shaped supporting plate;
the power mechanism is arranged on the arc-shaped supporting plate and used for driving the sliding seat to slide along the arc-shaped sliding groove;
and the loading assembly is arranged on the sliding seat and is used for applying load to the pile foundation.
2. The multi-directional loading detection device for pile foundation bearing capacity according to claim 1, wherein: the loading assembly includes:
the hydraulic cylinder is fixedly connected with the sliding seat;
the mounting plate is fixed at the telescopic end of the hydraulic cylinder, and a displacement sensor is connected between the mounting plate and the shell of the hydraulic cylinder;
the pressing plate is arranged on one side of the mounting plate, which is far away from the hydraulic cylinder, a plurality of connecting pins are fixed at intervals in the circumferential direction at the edge of the pressing plate, and the top ends of the connecting pins movably penetrate through the mounting plate and are provided with convex rings;
and the pressure sensor is arranged between the mounting plate and the pressing plate.
3. The multi-directional loading detection device for pile foundation bearing capacity according to claim 1, wherein: the power mechanism includes:
the second motor is fixed on a support lug fixed on the arc-shaped supporting plate, and the axis of the output shaft of the second motor passes through the circle center of the arc-shaped chute;
the connecting rod is fixed on the output shaft of the second motor and is fixedly connected with the sliding seat.
4. The multi-directional loading detection device for pile foundation bearing capacity according to claim 1, wherein: the telescopic device comprises a frame, a plurality of vertical telescopic rods are fixed on the frame, moving wheels are installed at the bottom ends of the telescopic rods, and accommodating cavities for accommodating the moving wheels are formed in the frame.
5. The multi-directional loading detection device for pile foundation bearing capacity according to claim 2, wherein: the pressure sensor is provided with a plurality of pressure sensors, one pressure sensor is fixedly connected to the center positions of the mounting plate and the pressing plate, other pressure sensors are circumferentially arranged on the outer side of the pressure sensor at intervals and are respectively connected with sliding grooves formed in the mounting plate in a sliding mode, and the mounting plate is provided with an adjusting mechanism for adjusting the positions of the other pressure sensors.
6. The multi-directional loading detection device for pile foundation bearing capacity according to claim 5, wherein: the adjustment mechanism includes:
a disc rotatably installed in the mounting plate, a poking pin is fixed on the disc, the poking pin extends to the upper part of the mounting plate and is provided with an arc groove for the poking pin to move;
and connecting rods hinged to other pressure sensors respectively, and one end of each connecting rod, which is far away from the pressure sensor, is eccentrically hinged with the disc.
7. The multi-directional loading detection device for pile foundation bearing capacity according to claim 1, wherein: also included is a guard assembly, the guard assembly comprising:
the protection rods are arranged on the outer side of the frame in a surrounding manner and are arranged at intervals in the vertical direction, the protection rods are connected with the frame in a sliding manner, and protection nets are connected between adjacent protection rods and between the bottommost protection rod and the frame;
the middle hinge pin of each shear fork mechanism is hinged with one protection rod respectively;
and the driving mechanism is used for driving the scissor mechanism to stretch and retract.
8. The multi-directional loading detection device for pile foundation bearing capacity according to claim 7, wherein: the driving mechanism includes:
a bidirectional screw rod rotatably mounted on the frame;
the motor is fixed on the frame and used for driving the bidirectional screw rod to rotate;
the two inner thread sleeves are respectively hinged with two end parts of the bottom of the shearing fork mechanism.
9. The multi-directional loading detection device for pile foundation bearing capacity according to claim 2, wherein: still include fixed subassembly for with frame fixed on ground, fixed subassembly includes:
the drill rod is threaded on the rack and used for drilling into the ground;
the third motor is fixed on the frame, a turntable is fixed on an output shaft of the third motor, and the third motor is electrically connected with the pressure sensor through the controller;
an elastic plate hinged on the frame and positioned at one side of the turntable far away from the third motor, wherein a plurality of inserted nails are fixed on the elastic plate;
the elastic plate is provided with a movable groove for the pin shaft to be inserted and move;
the elastic plate is internally provided with a cavity, a piston is arranged in the cavity, an elastic rod is fixedly connected to the piston, the elastic rod extends into the movable groove and is hinged to the pin shaft, an air bag communicated with the cavity is arranged in the inserted rod, and rotating beads are eccentrically and rotatably arranged on two sides of the air bag.
10. The detection method of the multidirectional loading detection device based on the pile foundation bearing capacity as set forth in any one of claims 1 to 9, wherein: the method comprises the following steps:
(1) The sliding seat is positioned right above the pile foundation by the moving device, vertical load is applied to the pile foundation by the loading assembly, and the bearing capacity of the pile foundation in the vertical direction is detected;
(2) The sliding seat and the loading assembly on the sliding seat are driven by the power mechanism to slide along the arc-shaped sliding groove, and the direction of the loading assembly for applying load to the pile foundation is adjusted;
(3) The arc-shaped supporting plate is driven by the first motor to rotate around the pile foundation, and the detection direction is adjusted.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117309362A (en) * | 2023-11-28 | 2023-12-29 | 瑞特认证检测集团有限公司 | Integrated quick-loading pile foundation detection device and detection method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117309362A (en) * | 2023-11-28 | 2023-12-29 | 瑞特认证检测集团有限公司 | Integrated quick-loading pile foundation detection device and detection method thereof |
| CN117309362B (en) * | 2023-11-28 | 2024-01-26 | 瑞特认证检测集团有限公司 | Integrated quick-loading pile foundation detection device and detection method thereof |
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