CN114293529A - Foundation soil strength in-situ test instrument - Google Patents
Foundation soil strength in-situ test instrument Download PDFInfo
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- CN114293529A CN114293529A CN202210111133.0A CN202210111133A CN114293529A CN 114293529 A CN114293529 A CN 114293529A CN 202210111133 A CN202210111133 A CN 202210111133A CN 114293529 A CN114293529 A CN 114293529A
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Abstract
The invention discloses a foundation soil strength in-situ test instrument, which comprises: a base adapted to be placed on a foundation to be tested; the testing device is arranged on the base; the testing device is provided with a mounting position, the mounting position is suitable for mounting various probe rods, and the various probe rods are respectively used for pile driving design or one of vertical bearing capacity analysis, horizontal load analysis and box-barrel type structure mounting design of a pile foundation. With the arrangement, technicians can replace the corresponding probe rods according to actual use requirements, and compared with a cross plate test, a static sounding test and a novel T-shaped sounding instrument, the embodiment of the invention is convenient for replacing various probe rods, so that the loading mode of the probe rods is consistent with the ocean foundation loading mechanism as far as possible in the soil body strength test process. Meanwhile, a reasonable probe rod is selected, so that the test result is easy to interpret, and a sufficient data interpretation theoretical basis is provided, thereby simplifying the test analysis process.
Description
Technical Field
The invention relates to the technical field of geological exploration, in particular to an in-situ testing instrument for the strength of foundation soil.
Background
When the foundation soil strength is tested in marine geological exploration or indoor geotechnical engineering model tests, the in-situ test method has small disturbance on the foundation soil, the obtained soil strength value is always considered preferentially in engineering design or test analysis, and the in-situ test result is extremely important and valuable. The soil body strength in-situ test instruments are various, common in-situ test methods comprise a cross plate test, a static sounding test, a novel T-shaped sounding instrument and the like, and the most applied in-situ test instruments are two field test instruments, namely the in-situ cross plate and the static sounding instrument which are simple and convenient to operate and easy to analyze data.
However, the above two instruments have single functions, and the result analysis depends on empirical formulas, different empirical formulas are needed to analyze and calculate the design values of the soil strength or the foundation bearing capacity for different foundation types, and the test and analysis process is complicated.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is that different foundation types in the prior art need to adopt different empirical formulas to analyze and calculate the designed value of the soil strength or the foundation bearing capacity, and the testing and analyzing process is complicated, so that the foundation soil strength in-situ testing instrument is provided.
In order to achieve the above object, an embodiment of the present invention provides an in-situ test apparatus for foundation soil strength, including: a base adapted to be placed on a foundation to be tested; the testing device is arranged on the base; the testing device is provided with a mounting position, the mounting position is suitable for mounting various probe rods, and the various probe rods are respectively used for pile driving design or one of vertical bearing capacity analysis, horizontal load analysis and box-barrel type structure mounting design of a pile foundation.
Optionally, the probe comprises: a rigid rod in a rigid structure; the bottom of the rigid rod is provided with a conical head; a sensor is arranged between the rigid rod and the conical head; the rigid rod is used for pile driving design or pile foundation vertical bearing capacity analysis.
Optionally, the probe comprises: the pipe rod is rigid and has a hollow thin-wall structure; the bottom of the pipe rod is provided with a ring piece, the ring piece is rigid, and the end part of the ring piece is provided with a cutting edge structure; the pipe rod is used for installing and designing a box-cylinder type structure; a sensor disposed between the tube stem and the ring plate.
Optionally, the probe further comprises: and one end of the reinforcing part is connected with the pipe rod, and the other end of the reinforcing part is connected with the ring piece.
Optionally, the test device comprises: the first driving device is arranged on the base; the first driving device is suitable for being connected with the probe rod; the probe rod performs detection motion under the driving action of the first driving device; the fixing plate is arranged on the base and provided with the mounting position.
Optionally, the testing apparatus further comprises: the transmission part is connected to the driving part of the first driving device; the transmission piece is suitable for being connected with the probe rod.
Optionally, the first driving device is a first motor, and the driving portion is a first driving shaft of the first motor.
Optionally, the transmission member is a threaded plate, and the threaded plate is sleeved on the first driving shaft; the outer edge of the thread piece is provided with first threads, at least part of the probe rod is provided with second threads, and the second threads are suitable for being matched with the first threads.
Optionally, the base comprises: a foundation rigid frame adapted to be placed on a foundation to be tested; a sliding mechanism is arranged on the basic rigid frame; the movable rigid frame is arranged on the basic rigid frame; and a sliding assembly is arranged at the bottom of the movable rigid frame and is suitable for sliding on the sliding mechanism.
Optionally, the sliding mechanism is a rail, and the sliding component is a roller arranged at the bottom of the mobile rigid frame.
Optionally, the sliding mechanism is arranged in a double-track manner; the sliding assembly comprises a flange plate and two rows of rollers, and the flange plate is arranged at the bottom of the movable rigid frame; two rows of rollers are suitable for being embedded on the double tracks, and each row of rollers corresponds to each track one by one.
Optionally, the two ends of the track are provided with a stop block.
Optionally, the base further comprises: the second driving device is arranged on the basic rigid frame; the second driving device is connected with the movable rigid frame; under the driving action of the second driving device, the sliding assembly is matched with the sliding mechanism, and the movable rigid frame is suitable for sliding on the basic rigid frame.
Optionally, the second driving device is a second motor, and a second driving shaft of the second motor is connected with the threaded rod; the movable rigid frame is provided with a threaded port, and the threaded port is in bearing connection with the movable rigid frame; the threaded opening is suitable for the threaded rod to pass through, and the threaded rod is connected with the threaded opening through threads in the threaded opening.
Optionally, the probe further comprises: a thin rod in a semi-rigid structure; along the length direction of the thin rod, a strain gauge is arranged on the thin rod; the bottom of the thin rod is provided with a conical head; the thin rod is used for horizontal load analysis.
Optionally, the base further comprises: the first supporting seat is arranged on the foundation rigid frame and located at one end, far away from the second motor, of the threaded rod.
Optionally, the base further comprises: and the second supporting seat is arranged on the foundation rigid frame and is positioned at one end, close to the second motor, of the threaded rod.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. the embodiment of the invention provides a foundation soil strength in-situ test instrument, which comprises: a base adapted to be placed on a foundation to be tested; the testing device is arranged on the base; the testing device is provided with a mounting position, the mounting position is suitable for mounting various probe rods, and the various probe rods are respectively used for pile driving design or one of vertical bearing capacity analysis, horizontal load analysis and box-barrel type structure mounting design of a pile foundation.
With the arrangement, technicians can replace the corresponding probe rods according to actual use requirements, and compared with a cross plate test, a static sounding test and a novel T-shaped sounding instrument, the embodiment of the invention is convenient for replacing various probe rods, so that the loading mode of the probe rods is consistent with the ocean foundation loading mechanism as far as possible in the soil body strength test process. Meanwhile, a reasonable probe rod is selected, so that the test result is easy to interpret, and a sufficient data interpretation theoretical basis is provided, thereby simplifying the test analysis process.
2. According to the embodiment of the invention, the strength of the hole site foundation soil can be conveniently tested by the system through replacing various probe rods. The process of pressing the rigid rod into the foundation soil can simulate the process of driving the pile foundation, and the test result is more conveniently applied to corresponding type foundation design and bearing capacity calculation.
3. According to the embodiment of the invention, the strength of the hole site foundation soil can be conveniently tested by the system through replacing various probe rods. The thin-wall pipe rod is pressed into the foundation soil, the interaction between the installation process of the box cylinder structure and the soil body can be simulated, the ring pieces with different thicknesses at the bottom end of the pipe rod are pressed into the foundation soil to obtain a test result, the influence of the wall thickness on the test result can be considered, and the result can be used for box cylinder structures with different wall thicknesses.
4. According to the embodiment of the invention, the movable rigid frame can horizontally move on the basic rigid frame, and the probe rod can be driven by the first driving device to be pressed into the foundation soil in the vertical direction, so that the multi-scale foundation soil strength test can be realized.
5. According to the embodiment of the invention, the strength of the hole site foundation soil can be conveniently tested by the system through replacing various probe rods. The thin rod horizontally slides in foundation soil, can simulate the horizontal load of a flexible pile foundation and interact with soil, and horizontally slides to measure the strength of the foundation soil.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for a worker of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of an in-situ testing apparatus for the strength of foundation soil according to an embodiment of the present invention;
FIG. 2 is a top view of the overall structure of the in-situ testing apparatus for foundation soil strength according to the embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of an in situ foundation soil strength testing apparatus according to an embodiment of the present invention;
FIG. 4 is a side view of an in situ foundation soil strength testing apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a rigid rod used in the foundation soil strength in-situ test instrument according to an embodiment of the present invention;
FIG. 6 is a schematic view of a foundation soil strength in-situ test instrument using a thin rod according to an embodiment of the present invention.
Reference numerals:
1. a base rigid frame; 2. moving the rigid frame; 3. a pipe rod; 4. a first motor; 5. a fixed seat; 6. a bolt; 7. a first drive shaft; 8. a first support base; 9. a threaded rod; 10. a threaded opening; 11. a bit block; 12. a track; 13. a rigid plate; 14. a threaded sheet; 15. a fixing plate; 16. a data line; 17. a thin rod; 18. a rigid rod; 19. a strain gauge; 20. a conical head; 21. a sensor; 22. a flange plate; 23. a roller; 24. a reinforcing portion; 25. a ring sheet; 26. a second motor; 27. a second drive shaft; 28. and a second support seat.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a worker skilled in the art without creative efforts based on the embodiments of the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases by a worker of ordinary skill in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
When the foundation soil strength is tested in marine geological exploration or indoor geotechnical engineering model tests, the in-situ test method has small disturbance on the foundation soil, the obtained soil strength value is always considered preferentially in engineering design or test analysis, and the in-situ test result is extremely important and valuable. The soil body strength in-situ test instruments are various, common in-situ test methods comprise a cross plate test, a static sounding test, a novel T-shaped sounding instrument and the like, and the most applied in-situ test instruments are two field test instruments, namely the in-situ cross plate and the static sounding instrument which are simple and convenient to operate and easy to analyze data.
However, the above two instruments have single functions, and the result analysis depends on empirical formulas, different empirical formulas are needed to analyze and calculate the design values of the soil strength or the foundation bearing capacity for different foundation types, and the test and analysis process is complicated.
Therefore, the technical problem to be solved by the invention is that different foundation types in the prior art need to adopt different empirical formulas to analyze and calculate the designed value of the soil strength or the foundation bearing capacity, and the testing and analyzing process is complicated, so that the foundation soil strength in-situ testing instrument is provided.
Example 1
As shown in fig. 1 to 6, an embodiment of the present invention provides an in-situ test apparatus for foundation soil strength, which includes a base and a test device.
In particular, in an embodiment of the invention, a base is adapted to be placed on a foundation to be tested, the testing device being provided on said base. The testing device is provided with a mounting position, the mounting position is suitable for mounting various probe rods, and the various probe rods are respectively used for pile driving design or one of vertical bearing capacity analysis, horizontal load analysis and box-barrel type structure mounting design of a pile foundation.
With the arrangement, technicians can replace the corresponding probe rods according to actual use requirements, and compared with a cross plate test, a static sounding test and a novel T-shaped sounding instrument, the embodiment of the invention is convenient for replacing various probe rods, so that the loading mode of the probe rods is consistent with the ocean foundation loading mechanism as far as possible in the soil body strength test process. For example, the first probe is used for pile driving design or pile foundation vertical bearing capacity analysis, the second probe is used for horizontal load analysis, and the third probe is used for box-and-tube structure installation design. When the technical staff wants to carry out pile design or pile foundation vertical bearing capacity analysis, the first probe rod of ring type can be specially gone on. During testing, if the technician desires to perform a horizontal load analysis, the first type of probe rod may be removed from the mounting location and the second type of probe rod may be mounted to the mounting location. Therefore, the corresponding probe rod can be replaced according to the actual use requirement. Meanwhile, a reasonable probe rod is selected, so that the test result is easy to interpret, and a sufficient data interpretation theoretical basis is provided, thereby simplifying the test analysis process.
Further, in an alternative embodiment of the present invention, the probe may be a rigid rod 18, and the rigid rod 18 is a rigid structure. The bottom of the rigid stem 18 is provided with a conical head 20 and between the rigid stem 18 and the conical head 20 a sensor 21 is provided, the sensor 21 containing a testable pressure and void hydraulic element.
According to the embodiment of the invention, the strength of the hole site foundation soil can be conveniently tested by the system through replacing various probe rods. The process of pressing the rigid rod 18 into the foundation soil can simulate the process of driving a pile foundation, and test results are more conveniently applied to corresponding type foundation design and bearing capacity calculation.
Further, in an alternative embodiment of the present invention, the probe may be a tube rod 3, the tube rod 3 is rigid, and the tube rod 3 has a hollow thin-wall structure. The bottom of the pipe rod 3 is provided with 3 ring pieces 25, and the 3 ring pieces 25 are uniformly arranged at the bottom of the pipe rod 3. The thickness of the 3 ring sheets 25 can be the same or different. The ring piece 25 is rigid, and the end of the ring piece 25 is provided with a cutting edge structure. The sensor 21 is arranged between the pipe rod 3 and the ring pieces 25, and the sensor 21 can respectively measure the penetration resistance of each ring piece 25.
According to the embodiment of the invention, the strength of the hole site foundation soil can be conveniently tested by the system through replacing various probe rods. Wherein, the thin-wall pipe pole 3 is pressed into the foundation soil, the interaction between the installation process of the box cylinder structure and the soil body can be imitated, the ring sheets 25 with different thicknesses at the bottom end of the pipe pole 3 are pressed into the foundation soil to obtain the test result, the influence of the wall thickness on the test result can be considered, and the result can be used for the box cylinder structures with different wall thicknesses.
Further, in an alternative embodiment of the present invention, when the probe is a tube rod 3, the bottom of the probe is further provided with a reinforced portion 24, one end of the reinforced portion 24 is connected to the tube rod 3, and the other end of the reinforced portion 24 is connected to the ring piece 25. The reinforcing part 24 can play a certain reinforcing role in the bottom of the probe rod, so that the stability and the rigidity of the probe rod can be ensured, the abrasion degree of the bottom of the probe rod can be reduced, and the service life of the probe rod is prolonged.
Further, in an alternative embodiment of the invention, the testing device comprises a first driving device and a fixed plate 15. Specifically, a rigid plate 13 is arranged on the base, a first driving device is arranged on the rigid plate 13, the first driving device is suitable for being connected with the probe rod, and the probe rod can vertically move downwards under the driving action of the first driving device. The fixing plate 15 is arranged on the base, and the mounting position is arranged on the fixing plate 15. In the embodiment of the present invention, the fixing plate 15 and the probe rod are configured in a matching manner, when a technician uses the first probe rod, the fixing plate 15 matched with the first probe rod needs to be used, and the mounting positions on the corresponding fixing plates 15 are different because the external dimensions of different probe rods are different.
Further, in an optional embodiment of the present invention, the testing device further comprises a transmission member connected to the driving portion of the first driving device, and the transmission member is adapted to be connected to the probe rod. In particular, the first driving means may be a first motor 4, and the driving portion is a first driving shaft 7 of the first motor 4. The transmission member may be a threaded piece 14, and the threaded piece 14 is sleeved on the first driving shaft 7. The outer edge of the thread piece 14 is provided with a first thread, and the probe rod is at least partially provided with a second thread which is suitable for being matched with the first thread.
In the working process, the first motor 4 is started, then the first driving shaft 7 drives the thread piece 14 to rotate, and the first thread of the thread piece 14 is connected with the second thread on the probe rod, so that the probe rod can be driven to rotate when the thread piece 14 rotates. Meanwhile, the rotation direction of the thread piece 14 and thus the rotation direction and the movement direction of the probe rod can be adjusted by controlling the driving direction of the first motor 4. Specifically, the probe rod can move downwards or upwards when rotating clockwise, and can also move downwards or upwards when rotating anticlockwise.
Further, in an alternative embodiment of the invention, the base comprises a basic rigid frame 1 and a mobile rigid frame 2. Specifically, the foundation rigid frame 1 is suitable for being placed on a foundation to be tested, and a sliding mechanism is arranged on the foundation rigid frame 1. The movable rigid frame 2 is arranged on the basic rigid frame 1, and the bottom of the movable rigid frame 2 is provided with a sliding component which is suitable for sliding on the sliding mechanism, so that the movable rigid frame 2 can horizontally slide on the basic rigid frame 1.
Specifically, in the embodiment of the present invention, the sliding mechanism may be a rail 12, and the sliding component may be a roller 23 disposed at the bottom of the mobile rigid frame 2. The rollers 23 can cooperate with the rails 12, and the rollers 23 can slide on the rails 12. Moreover, the sliding mechanism can also be arranged in a double-track manner. The sliding components are a flange plate 22 and two rows of rollers 23, the flange plate 22 is arranged at the bottom of the movable rigid frame 2, the two rows of rollers 23 are suitable for being embedded on the double tracks, and each row of rollers 23 corresponds to each track 12 one by one. And the two ends of the track 12 are provided with a stop block 11. The stop block 11 prevents the mobile rigid frame 2 from sliding out of the rail 12 in horizontal sliding.
Optionally, the base further comprises: the second driving device is arranged on the basic rigid frame 1; the second driving device is connected with the movable rigid frame 2; under the driving action of the second driving device, the movable rigid frame 2 is matched with the sliding mechanism through the sliding assembly, and is suitable for sliding on the basic rigid frame 1.
Optionally, the second driving device is a second motor 26, and a second driving shaft 27 of the second motor 26 is connected with the threaded rod 9; a threaded opening 10 is formed in the movable rigid frame 2, and the threaded opening 10 is in bearing connection with the movable rigid frame 2; the threaded opening 10 is suitable for the threaded rod 9 to pass through, and the threaded rod 9 is connected with the threaded opening 10 through threads in the threaded opening 10. The first motor 4 and the second motor 26 can fasten the bottoms of the first motor 4 and the second motor 26 through the fixing base 5 by the bolts 6.
According to the embodiment of the invention, the movable rigid frame 2 can horizontally move on the basic rigid frame 1, and the probe rod can be driven by the first driving device to be pressed into the foundation soil in the vertical direction, so that the multi-scale foundation soil strength test can be realized.
Further, in an optional embodiment of the present invention, the probe rod further comprises a thin rod 17, and the thin rod 17 is of a semi-rigid structure. Along the length direction of the thin rod 17, a plurality of strain gauges 19 are arranged on the thin rod 17, and a conical head 20 is arranged at the bottom of the thin rod 17. The top ends of the thin rod 17, the rigid rod 18 and the tube rod 3 are provided with the data lines 16, and measurement data can be output.
According to the embodiment of the invention, the strength of the hole site foundation soil can be conveniently tested by the system through replacing various probe rods. The thin rod 17 horizontally slides in foundation soil, interaction between horizontal load of a flexible pile foundation and soil can be simulated, the strength of the foundation soil is measured by the horizontal sliding of the thin rod 17, and compared with the strength of the soil measured by the traditional probe rod pressing-in process, the ground foundation soil strength measuring device has no influence of upper covering soil pressure.
Further, in an optional embodiment of the present invention, the base further comprises: first supporting seat 8 and second supporting seat 28, first supporting seat 8 sets up on the rigidity of basis frame 1, first supporting seat 8 is located keep away from on the threaded rod 9 the one end of second motor 26. A second support seat 28 is disposed on the basic rigid frame 1, and the second support seat 28 is located at one end of the threaded rod 9 close to the second motor 26.
The specific use and intensity calculation flow of the embodiment of the invention is as follows:
1. selecting a probe rod: different pipe rods 3 are installed according to requirements, a rigid rod 18, a horizontal load analysis selection slender rod 17 and a box-cylinder structure selection pipe rod 3 are selected in pile driving design or pile foundation vertical bearing capacity analysis.
2. And (3) loading test: for the pipe rod 3 and the rigid rod 18, test results such as penetration resistance, pore water pressure and the like are recorded in the process of pressing in foundation soil, and the loading mechanism is controlled to select different point positions for press-in test; after the thin rod 17 is pressed in, the movable rigid frame 2 is controlled to push the thin rod 17 to horizontally slide, and the data of the strain gauge 19 is recorded to obtain the bending moment data.
And (4) analyzing results: the thin rod 17 can calculate the horizontal bending moment between the two strain gauges 19 through the bending moment obtained by the strain gauges 19, so as to calculate the unearthed horizontal resistance and provide soil body parameters for the calculation of the horizontal bearing capacity of the pile foundation; the friction between pile soil, the pile penetration resistance and the like can be calculated according to the parameters such as the side wall friction, the end resistance and the like in the pressing-in process of the rigid rod 18; the penetration resistance of the pipe rod 3 can be used for calculating the resistance of the thin-wall structure pressed into the soil body and the relation between the resistance and the wall thickness, and the result can be applied to the installation design of the box cylinder structure.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Variations and modifications in other variations may occur to those skilled in the art based upon the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (17)
1. An in situ test instrument for foundation soil strength, comprising:
a base adapted to be placed on a foundation to be tested;
the testing device is arranged on the base; the testing device is provided with a mounting position, the mounting position is suitable for mounting various probe rods, and the various probe rods are respectively used for pile driving design or one of vertical bearing capacity analysis, horizontal load analysis and box-barrel type structure mounting design of a pile foundation.
2. The in situ test instrument of foundation soil strength of claim 1, wherein the probe comprises:
a rigid rod (18) of rigid construction; the bottom of the rigid rod (18) is provided with a conical head (20); a sensor (21) is arranged between the rigid rod (18) and the conical head (20); the rigid rod (18) is used for pile driving design or pile foundation vertical bearing capacity analysis.
3. The in situ test instrument of foundation soil strength of claim 1, wherein the probe comprises:
the pipe rod (3) is rigid and has a hollow thin-wall structure; the bottom of the pipe rod (3) is provided with a ring piece (25), the ring piece (25) is rigid, and the end part of the ring piece (25) is provided with a cutting edge structure; the pipe rod (3) is used for installing and designing a box-and-tube structure;
a sensor (21) disposed between the tube stem (3) and the ring plate (25).
4. The in situ test instrument of foundation soil strength of claim 3, wherein the probe further comprises:
and one end of the reinforcing part (24) is connected with the pipe rod (3), and the other end of the reinforcing part is connected with the ring piece (25).
5. The in situ test apparatus for foundation soil strength according to any one of claims 1 to 4, wherein the test device comprises:
the first driving device is arranged on the base; the first driving device is suitable for being connected with the probe rod; the probe rod performs detection motion under the driving action of the first driving device;
the fixing plate (15) is arranged on the base, and the mounting position is arranged on the fixing plate (15).
6. The in situ test instrument of foundation soil strength of claim 5, wherein the testing device further comprises:
the transmission part is connected to the driving part of the first driving device; the transmission piece is suitable for being connected with the probe rod.
7. The in-situ test instrument for foundation soil strength according to claim 6, wherein the first driving device is a first motor (4), and the driving part is a first driving shaft (7) of the first motor (4).
8. The in-situ testing instrument for the strength of the foundation soil according to claim 7, wherein the transmission member is a threaded sheet (14), and the threaded sheet (14) is sleeved on the first driving shaft (7); the outer edge of the thread piece (14) is provided with a first thread, at least part of the probe rod is provided with a second thread, and the second thread is suitable for being matched with the first thread.
9. The in situ test apparatus for foundation soil strength according to any one of claims 1 to 4, wherein the base comprises:
a foundation rigid frame (1) suitable for being placed on a foundation to be tested; a sliding mechanism is arranged on the basic rigid frame (1);
a mobile rigid frame (2) arranged on the basic rigid frame (1); the bottom of the mobile rigid frame (2) is provided with a sliding assembly which is suitable for sliding on the sliding mechanism.
10. The in situ test instrument for foundation soil strength according to claim 9, wherein the sliding mechanism is a rail (12) and the sliding assembly is a roller (23) disposed at the bottom of the mobile rigid frame (2).
11. The in-situ testing instrument for foundation soil strength according to claim 10, wherein the sliding mechanism is arranged in a double track manner; the sliding assembly comprises a flange plate (22) and two rows of rollers (23), and the flange plate (22) is arranged at the bottom of the movable rigid frame (2); two rows of rollers (23) are adapted to be embedded on the double tracks, each row of rollers (23) corresponding one to each track (12).
12. The in-situ testing instrument for foundation soil strength according to claim 11, wherein the two ends of the rail (12) are provided with the stopping blocks (11).
13. The in situ test apparatus for foundation soil strength according to any one of claims 10 to 12, wherein the base further comprises:
a second drive means arranged on said basic rigid frame (1); the second driving device is connected with the mobile rigid frame (2); under the driving action of the second driving device, the movable rigid frame (2) is matched with the sliding mechanism through the sliding assembly and is suitable for sliding on the basic rigid frame (1).
14. The in situ test apparatus for foundation soil strength of claim 13,
the second driving device is a second motor (26), and a second driving shaft (27) of the second motor (26) is connected with the threaded rod (9);
a threaded opening (10) is formed in the movable rigid frame (2), and the threaded opening (10) is in bearing connection with the movable rigid frame (2); the threaded opening (10) is suitable for the threaded rod (9) to pass through, and the threaded rod (9) is connected with the threaded opening (10) through threads in the threaded opening (10).
15. The in situ test instrument of foundation soil strength of claim 14, wherein the probe further comprises:
a thin rod (17) in a semi-rigid structure; along the length direction of the thin rod (17), a strain gauge (19) is arranged on the thin rod (17); the bottom of the thin rod (17) is provided with a conical head (20); the thin rod (17) is used for horizontal load analysis.
16. The in situ test apparatus for foundation soil strength of claim 14 or 15, wherein the base further comprises:
first supporting seat (8), set up on basic rigidity frame (1), first supporting seat (8) are located keep away from on threaded rod (9) the one end of second motor (26).
17. The in situ test apparatus for foundation soil strength of claim 14 or 15, wherein the base further comprises:
and the second supporting seat (28) is arranged on the basic rigid frame (1), and the second supporting seat (28) is positioned at one end, close to the second motor (26), of the threaded rod (9).
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| CN202210111133.0A CN114293529A (en) | 2022-01-29 | 2022-01-29 | Foundation soil strength in-situ test instrument |
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| CN202210111133.0A CN114293529A (en) | 2022-01-29 | 2022-01-29 | Foundation soil strength in-situ test instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115434297A (en) * | 2022-09-05 | 2022-12-06 | 中国长江三峡集团有限公司 | Ocean soil strength test equipment |
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| CN102493423A (en) * | 2011-11-22 | 2012-06-13 | 浙江大学 | Onboard three-factor static penetrometer for centrifuge |
| CN106759214A (en) * | 2016-12-02 | 2017-05-31 | 东南大学 | A kind of two-sided tapered full stream feeler inspection probe |
| CN107036895A (en) * | 2017-06-04 | 2017-08-11 | 北京雷雨达科技有限公司 | The vertical side friction test device of in-situ three-dimensional dead load under ground body opening |
| CN108678035A (en) * | 2018-06-06 | 2018-10-19 | 天津大学 | A kind of annular feeler inspection device of detection bucket foundation sinking process side friction |
| CN211474100U (en) * | 2019-11-23 | 2020-09-11 | 江苏亚道建设工程检测有限公司 | Digital light dynamic sounding instrument |
-
2022
- 2022-01-29 CN CN202210111133.0A patent/CN114293529A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493423A (en) * | 2011-11-22 | 2012-06-13 | 浙江大学 | Onboard three-factor static penetrometer for centrifuge |
| CN106759214A (en) * | 2016-12-02 | 2017-05-31 | 东南大学 | A kind of two-sided tapered full stream feeler inspection probe |
| CN107036895A (en) * | 2017-06-04 | 2017-08-11 | 北京雷雨达科技有限公司 | The vertical side friction test device of in-situ three-dimensional dead load under ground body opening |
| CN108678035A (en) * | 2018-06-06 | 2018-10-19 | 天津大学 | A kind of annular feeler inspection device of detection bucket foundation sinking process side friction |
| CN211474100U (en) * | 2019-11-23 | 2020-09-11 | 江苏亚道建设工程检测有限公司 | Digital light dynamic sounding instrument |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115434297A (en) * | 2022-09-05 | 2022-12-06 | 中国长江三峡集团有限公司 | Ocean soil strength test equipment |
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Application publication date: 20220408 |