CN114960782A - Measuring instrument for low strain detection of pile foundation and on-site supervision system - Google Patents
Measuring instrument for low strain detection of pile foundation and on-site supervision system Download PDFInfo
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- CN114960782A CN114960782A CN202210615657.3A CN202210615657A CN114960782A CN 114960782 A CN114960782 A CN 114960782A CN 202210615657 A CN202210615657 A CN 202210615657A CN 114960782 A CN114960782 A CN 114960782A
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- 230000005540 biological transmission Effects 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 abstract description 14
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- 235000017166 Bambusa arundinacea Nutrition 0.000 description 12
- 235000017491 Bambusa tulda Nutrition 0.000 description 12
- 241001330002 Bambuseae Species 0.000 description 12
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 12
- 239000011425 bamboo Substances 0.000 description 12
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- E—FIXED CONSTRUCTIONS
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- E02D33/00—Testing foundations or foundation structures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
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Abstract
The invention discloses a measuring instrument and a field supervision system for pile foundation low-strain detection, which comprise a connecting disc, an impact mechanism and a low-strain pile foundation dynamic tester, wherein a rotary disc is rotatably arranged at one end of the connecting disc and is in sliding connection with the vertically arranged low-strain pile foundation dynamic tester, a storage battery is fixedly connected to the top of the low-strain pile foundation dynamic tester, a connecting ring is fixedly connected to the outer wall of the bottom of the low-strain pile foundation dynamic tester, the top surface of the connecting ring is fixedly connected with the bottom ends of a plurality of first springs, the top ends of the first springs are fixedly connected with the bottom surface of a rotating ring, the rotating ring is fixedly connected to the outer wall of the low-strain pile foundation dynamic tester, a universal ball is rotatably arranged at the other end of the connecting disc in an embedded manner, and the impact mechanism is connected to the inner thread of the universal ball in a rotating manner. The invention enables the low-strain dynamic measuring instrument of the pile foundation to be tightly attached to the pile foundation during measurement, thereby improving the measurement precision and the measurement effect of the measuring instrument, freely adjusting the direction and the angle of the impact mechanism and effectively improving the practicability of the measuring instrument.
Description
Technical Field
The invention relates to an engineering detection device, in particular to a measuring instrument for low strain detection of a pile foundation and an on-site supervision system.
Background
Engineering detection is an important work for testing foundations, building materials, construction processes and building structures related to buildings in the whole construction process in order to guarantee the safety of the constructed, under-construction and to-be-constructed building engineering. The foundation structure detection research institute comprises foundation pit monitoring, pile foundation detection and other foundation basic engineering. Specific pile foundation detection (high strain, low strain, core drilling detection and static load test), foundation pit monitoring, foundation pit support and the like. And (5) detecting the quality of the pile foundation engineering. The construction of the cast-in-place pile is divided into two parts of hole forming and pile forming, so that the detection of the pile foundation can be divided into two parts of hole forming quality detection and pile forming quality detection. The hole forming is the first link in the construction of the cast-in-place pile. The hole forming operation is finished underground or underwater, the quality control difficulty is high, and the problems of hole collapse, hole shrinkage, pile hole deflection, excessive sediment and the like can be caused by complicated geological conditions or errors in construction. Pile quality detection can be divided into bearing capacity detection and integrity detection.
When detecting the quality of pile foundation engineering, a foundation pile low-strain detection mode is often adopted to detect the structural integrity of a foundation pile body in a pile foundation. The existing detection mode generally adopts a detection hammer to knock a foundation pile, and the quality is judged by detecting the fluctuation of the foundation pile through an instrument. However, the manual knocking of the foundation piles needs large force, the received anti-seismic force is also large, the workers can be very tired under the condition that the foundation piles are more, the manual knocking force is weakened, and the detected data are unstable.
The invention patent specification with the patent number of CN 109811808B discloses a measuring instrument and a field supervision system for low strain detection of a foundation pile. Although the invention solves the problems to a certain extent, in actual use, a plurality of impact cylinders are required to be arranged, the structure is complex, the verticality between the impact cylinders and the pile foundation is difficult to ensure, and the measurement accuracy of a measuring instrument is seriously influenced.
Disclosure of Invention
The invention aims to provide a measuring instrument for low-strain detection of a pile foundation and an on-site supervision system, which are used for solving the problems in practical use.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a measuring instrument that low strain of pile foundation detected, including connection pad, impact mechanism and low strain pile foundation move measuring instrument, the one end of connection pad is rotated and is installed the carousel, carousel and vertical setting with low strain pile foundation move measuring instrument sliding connection, the top fixedly connected with battery of low strain pile foundation move measuring instrument, fixedly connected with go-between on the bottom outer wall of low strain pile foundation move measuring instrument, and the top surface of go-between and a plurality of evenly distributed and the first spring bottom fixed connection of vertical setting, the top and the swivel bottom surface fixed connection of first spring, swivel fixed connection is on the outer wall of low strain pile foundation move measuring instrument, universal ball is installed in the embedded rotation of the other end of connection pad, threaded connection has impact mechanism in the universal ball.
It is to be noted that, the invention, through the design of the first spring, enables the low strain pile foundation dynamic tester to be tightly attached to the pile foundation during the measurement, thereby improving the measurement accuracy and the measurement effect of the tester, while the impact mechanism is installed at the other end of the connecting disc through the universal ball, enables the impact mechanism to freely adjust the direction and the angle of the impact mechanism when impacting the pile foundation, enables the impact mechanism to be perpendicular to the surface of the pile foundation, thereby further improving the test effect of the tester, and the height of the impact mechanism is convenient to adjust, thus being suitable for the impact test of pile foundation surfaces with different heights, effectively improving the practicality of the tester, in addition, when testing around the low strain pile foundation dynamic tester, the low strain pile foundation dynamic tester is kept still, the connecting disc is rotated, the impact point of the impact mechanism can be freely adjusted, realizing the adjustment of multiple tests, the structure is simple, the operation is convenient, and the practicability of the invention is further improved.
Preferably: the impact mechanism is including strikeing a section of thick bamboo and setting up the test hammer in strikeing a section of thick bamboo, strike a section of thick bamboo and universal ball threaded connection, test hammer slidable mounting is in strikeing a section of thick bamboo, and the top surface of test hammer and the bottom fixed connection of pull rod, the top fixedly connected with iron plate of pull rod, pull rod and fixed block sliding connection, fixed block fixed connection is on the inner wall of strikeing a section of thick bamboo, and the bottom surface and the cover of fixed block establish the second spring top fixed connection on the pull rod, the bottom of second spring and the top surface fixed connection of test hammer, the top fixed mounting who strikes a section of thick bamboo has fixed disk, fixed disk female connection has the threaded rod, the bottom fixedly connected with electro-magnet of threaded rod, the top fixedly connected with handle of threaded rod, and the electro-magnet passes through switch and battery electric connection, the switch sets up on the connection pad.
Preferably: strike a bottom fixedly connected with of section of thick bamboo and look for the flat ring, when the ring lid that will make level on the pile foundation surface, can guarantee to strike a section of thick bamboo and pile foundation surface through looking for the flat ring and keep mutually perpendicular's state.
Preferably: the middle part of the impact barrel is fixedly connected with a limiting ring, the thread part on the outer wall of the impact barrel is positioned between the leveling ring and the limiting ring, and the impact barrel is prevented from being separated from the universal ball through the leveling ring and the limiting ring.
It should be noted that, when the electro-magnet circular telegram, can produce powerful magnetism, thereby adsorb the iron plate, the second spring at this moment is in compression state, the iron plate is carried the test hammer through the pull rod, when measuring, through the circuit between switch disconnection battery and the electro-magnet, make the electro-magnet lose magnetism, at this moment push down the test hammer under the effect of second spring, thereby make the test hammer impact the surface at the pile foundation, the test function to the pile foundation has been realized, and drive the threaded rod through the handle and rotate, the interact between threaded rod and the fixed disk, adjust the electro-magnet height in assaulting the section of thick bamboo, thereby adjust the iron plate height of lifting the test hammer, the energy of spring release can cause the speed when the test hammer assaults the pile foundation to be different this moment.
Preferably: the bottom surface of the fixed disk is uniformly and fixedly connected with a plurality of fixed feet, a cambered surface with the same diameter as the outer wall of the impact cylinder is formed between the inner walls of the fixed feet, when the fixed disk is clamped at the top of the impact cylinder through the fixing pins, the stability of the fixed disk can be improved through the design of the fixing pins, the fixed disk is prevented from shaking, the bottom ends of the fixing pins are fixedly connected with a clamping block towards one side of the impact cylinder, the top end of the impact cylinder is provided with vertically arranged open slots corresponding to the positions of the fixing pins, one side of the bottom end of each open slot is provided with a clamping slot with the same shape as the clamping block, the other side of the bottom end of each open slot is provided with an accommodating slot, and a wedge-shaped block is slidably mounted in each accommodating slot, and one side of the wedge block facing the accommodating groove is fixedly connected with one end of a third spring, the other end of the third spring is fixedly connected with the inner wall of the accommodating groove, and the top surface of the wedge block is arranged to be an inclined surface and the bottom end of the inclined surface faces the clamping groove.
It should be noted that, when fixing the fixed disk to impact section of thick bamboo top, insert the fixture block in the open slot, and slide downwards along the open slot, when contacting with the wedge, through the inclined plane design at wedge top, extrude the wedge and receive in the groove, loosen the fixed disk this moment, promote the wedge under the effect of third spring and push away the fixture block to the draw-in groove in, realize the fixed to the fixed disk, and when tearing down the fixed disk and overhaul impact mechanism, when rotating the fixed disk the fixture block corresponds open slot department, mention the fixed disk can, easy operation is convenient.
The utility model provides a pile foundation low strain detection's measuring instrument's on-the-spot supervisory system includes low strain pile foundation electrometer and wireless transmission module and sets up outside central processing module, low strain pile foundation electrometer and wireless transmission module electric connection, wireless transmission module and outside central processing module electric connection, in the in-service use, collect the impact data of impact mechanism by low strain pile foundation electrometer, and send the data that collect to outside central processing module through the wireless transmission module, thereby realize the on-the-spot supervision to measuring instrument.
Compared with the prior art, the invention has the beneficial effects that:
the invention can make the low strain pile foundation dynamic tester cling to the pile foundation during measurement through the design of the first spring, thereby improving the measurement precision and the measurement effect of the tester, and the impact mechanism is arranged at the other end of the connecting disc through the universal ball, so that the impact mechanism can freely adjust the direction and the angle of the impact mechanism when impacting the pile foundation, and the impact mechanism is perpendicular to the surface of the pile foundation, thereby further improving the test effect of the tester, and the height of the impact mechanism is convenient to adjust, thus being suitable for impact test on pile foundation surfaces with different heights, effectively improving the practicability of the tester, in addition, when testing around the low strain pile foundation dynamic tester, the low strain dynamic tester is kept still, the connecting disc is rotated, the impact point of the impact mechanism can be freely adjusted, thereby realizing adjustment of multiple tests, and having simple structure, the operation is convenient, and the practicability of the invention is further improved.
Drawings
Fig. 1 is a schematic structural diagram of a measuring instrument for low strain detection of a pile foundation.
Fig. 2 is an exploded view of an impact mechanism in a measuring instrument for low strain detection of a pile foundation.
Fig. 3 is an exploded view of an impact mechanism in a measuring instrument for low strain detection of a pile foundation.
Fig. 4 is a partial enlarged view of a part a of a measuring instrument for low strain detection of a pile foundation.
As shown in the figure: 1. a connecting disc; 2. an impact mechanism; 21. leveling rings; 22. an impact cylinder; 23. a limiting ring; 24. testing the hammer; 25. a second spring; 26. a fixed block; 27. a pull rod; 28. an iron block; 29. an electromagnet; 210. a threaded rod; 211. fixing the disc; 212. a handle; 213. a receiving groove; 214. a third spring; 215. a wedge block; 216. an open slot; 217. a card slot; 218. a clamping block; 219. a fixing leg; 3. a switch; 4. a connecting ring; 5. a first spring; 6. a turntable; 7. a low-strain pile foundation dynamic tester; 8. a storage battery; 9. a universal ball.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1 to 4, in the embodiment of the invention, a measuring instrument for detecting low strain of a pile foundation comprises a connecting disc 1, an impact mechanism 2 and a low strain pile foundation dynamometer 7, wherein a rotating disc 6 is rotatably mounted at one end of the connecting disc 1, the rotating disc 6 is in sliding connection with the low strain pile foundation dynamometer 7 which is vertically arranged, a storage battery 8 is fixedly connected to the top of the low strain pile foundation dynamometer 7, a connecting ring 4 is fixedly connected to the outer wall of the bottom of the low strain pile foundation dynamometer 7, the top surface of the connecting ring 4 is fixedly connected to the bottom ends of a plurality of first springs 5 which are uniformly distributed and vertically arranged, the top ends of the first springs 5 are fixedly connected to the bottom surface of a rotating ring, the rotating ring is fixedly connected to the outer wall of the low strain pile foundation dynamometer 7, a universal ball 9 is rotatably mounted at the other end of the connecting disc 1 in an embedded manner, and an internal thread is connected to the impact mechanism 2 through the universal ball 9.
It should be noted that, the invention, through the design of the first spring 5, enables the low strain pile foundation dynamic tester 7 to be tightly attached to the pile foundation during measurement, thereby improving the measurement accuracy and measurement effect of the measuring instrument, and the impact mechanism 2 is installed at the other end of the connecting disc 1 through the universal ball 1, so that the impact mechanism 2 can freely adjust the direction and angle of the impact mechanism 2 when impacting the pile foundation, and the impact mechanism 2 is perpendicular to the surface of the pile foundation, thereby further improving the test effect of the measuring instrument, and the height of the impact mechanism 2 is convenient to adjust, and is suitable for impact test of pile foundation surfaces with different heights, effectively improving the practicability of the measuring instrument, in addition, when testing around the low strain pile foundation dynamic tester 7, the low strain pile foundation dynamic tester 7 is kept motionless, the connecting disc 1 is rotated, and the impact point of the impact mechanism 2 can be freely adjusted, the device realizes adjustment of multiple tests, has simple structure and convenient operation, and further improves the practicability of the device.
The impact mechanism 2 comprises an impact cylinder 22 and a test hammer 24 arranged in the impact cylinder 22, the impact cylinder 22 is in threaded connection with the universal ball 9, the test hammer 24 is slidably mounted in the impact cylinder 22, the top surface of the test hammer 24 is fixedly connected with the bottom end of a pull rod 27, the top end of the pull rod 27 is fixedly connected with an iron block 28, the pull rod 27 is in sliding connection with a fixed block 26, the fixed block 26 is fixedly connected on the inner wall of the impact cylinder 22, the bottom surface of the fixed block 26 is fixedly connected with the top end of a second spring 25 sleeved on the pull rod 27, the bottom end of the second spring 25 is fixedly connected with the top surface of the test hammer 24, the top end of the impact cylinder 22 is fixedly provided with a fixed fixing disc 211, the fixing disc 211 is in threaded connection with a threaded rod 210, the bottom end of the threaded rod 210 is fixedly connected with an electromagnet 29, the top end of the threaded rod 210 is fixedly connected with a handle 212, and the electromagnet 29 is electrically connected with the storage battery 8 through a switch 3, the switch 3 is provided on the connection pad 1.
The bottom end fixedly connected with of striking a section of thick bamboo 22 is looked for the flat ring 21, will look for flat ring 21 lid when the pile foundation surface, can guarantee to strike a section of thick bamboo 22 and pile foundation surface through looking for flat ring 21 and keep mutually perpendicular's state.
The middle part of the impact barrel 22 is fixedly connected with a limiting ring 23, the thread part on the outer wall of the impact barrel 22 is positioned between the leveling ring 21 and the limiting ring 23, and the impact barrel 22 is prevented from being separated from the universal ball 9 through the leveling ring 21 and the limiting ring 23.
It should be noted that when electromagnet 29 is powered on, strong magnetism is generated, so as to attract iron block 28, second spring 25 at this time is in a compressed state, iron block 28 lifts up test hammer 24 through pull rod 27, when measurement is performed, a circuit between battery 8 and electromagnet 29 is disconnected through switch 3, so that electromagnet 29 loses magnetism, test hammer 24 is pressed down under the action of second spring 25, so that test hammer 24 impacts the surface of the pile foundation, the test function of the pile foundation is realized, threaded rod 210 is driven to rotate through handle 212, the interaction between threaded rod 210 and fixed disk 211 is used for adjusting the height of electromagnet 29 in impact cylinder 22, so as to adjust the height that iron block 28 lifts up test hammer 24, and the energy released by spring 25 causes different speeds when test hammer 24 impacts the pile foundation.
The bottom surface of the fixed disk 211 is uniformly and fixedly connected with a plurality of fixing feet 219, an arc surface with the same diameter as the outer wall of the impact cylinder 22 is formed between the inner walls of the fixing feet 219, when the fixed disk 211 is clamped at the top of the impact cylinder 22 through the fixing feet 219, the stability of the fixed disk 211 can be improved through the design of the fixing feet 219, the fixed disk 211 is prevented from shaking, one side of the bottom ends of the fixing feet 219, which faces the impact cylinder 22, is fixedly connected with a fixture block 218, the top end of the impact cylinder 22, which corresponds to the fixing feet 219, is provided with vertically arranged open grooves 216, one side of the bottom ends of the open grooves 216 is provided with a clamping groove 217 with the same shape as the fixture block 218, the other side of the bottom ends of the open grooves 216 is provided with an accommodating groove 213, a wedge block 215 is slidably installed in the accommodating groove 213, one side of the wedge block 215, which faces the accommodating groove 213, is fixedly connected with one end of a third spring 214, and the other end of the third spring 214 is fixedly connected with the inner wall of the accommodating groove 213, the top surface of the wedge block 215 is a slope and the bottom end of the slope faces the slot 217.
It should be noted that, when the fixed disk 211 is fixed to the top end of the impact cylinder 22, the fixture block 218 is inserted into the open groove 216 and slides downward along the open groove 216, and when the fixed disk 211 contacts the wedge block 215, the wedge block 215 is pressed into the receiving groove 213 through the inclined surface design at the top of the wedge block 215, at this time, the fixed disk 211 is released, the wedge block 215 is pushed under the action of the third spring 214 to push the fixture block 218 into the fixture groove 217, so as to fix the fixed disk 211, and when the fixed disk 211 is detached to perform maintenance on the impact mechanism 2, when the fixed disk 211 is rotated, the fixed disk 211 is lifted up when the fixture block 218 corresponds to the open groove 216, so that the operation is simple and convenient.
The on-site supervision system of the measuring instrument for detecting the low strain of the pile foundation comprises a low-strain pile foundation dynamic measuring instrument 7, a wireless transmission module (not shown in the figure) and an external central processing module, wherein the low-strain pile foundation dynamic measuring instrument 7 is electrically connected with the wireless transmission module, the wireless transmission module is electrically connected with the external central processing module, in actual use, the low-strain pile foundation dynamic measuring instrument 7 collects impact data of an impact mechanism 2, and the collected data are sent to the external central processing module through the wireless transmission module, so that the on-site supervision of the measuring instrument is realized.
Claims (6)
1. A measuring instrument for low-strain detection of pile foundation comprises a connecting disc (1), an impact mechanism (2) and a low-strain pile foundation dynamic tester (7), and is characterized in that one end of the connecting disc (1) is rotatably provided with a turntable (6), the turntable (6) is in sliding connection with the low-strain pile foundation dynamic tester (7) which is vertically arranged, the top of the low-strain pile foundation dynamic tester (7) is fixedly connected with a storage battery (8), the outer wall of the bottom of the low-strain pile foundation dynamic tester (7) is fixedly connected with a connecting ring (4), the top surface of the connecting ring (4) is fixedly connected with the bottom ends of a plurality of first springs (5) which are uniformly distributed and vertically arranged, the top ends of the first springs (5) are fixedly connected with the bottom surface of a rotating ring which is fixedly connected with the outer wall of the low-strain pile foundation dynamic tester (7), and a universal ball (9) is installed at the other end of the connecting disc (1) in an embedded type rotation manner, the universal ball (9) is internally threaded with an impact mechanism (2).
2. The measuring instrument for detecting the low strain of the pile foundation according to claim 1, wherein the impact mechanism (2) comprises an impact cylinder (22) and a test hammer (24) arranged in the impact cylinder (22), the impact cylinder (22) is in threaded connection with the universal ball (9), the test hammer (24) is slidably arranged in the impact cylinder (22), the top surface of the test hammer (24) is fixedly connected with the bottom end of a pull rod (27), the top end of the pull rod (27) is fixedly connected with an iron block (28), the pull rod (27) is slidably connected with a fixed block (26), the fixed block (26) is fixedly connected on the inner wall of the impact cylinder (22), the bottom surface of the fixed block (26) is fixedly connected with the top end of a second spring (25) sleeved on the pull rod (27), the bottom end of the second spring (25) is fixedly connected with the top surface of the test hammer (24), the top end of the impact cylinder (22) is fixedly provided with a fixed fixing disc (211), fixed disk (211) female connection has threaded rod (210), the bottom fixedly connected with electro-magnet (29) of threaded rod (210), the top fixedly connected with handle (212) of threaded rod (210), and electro-magnet (29) pass through switch (3) and battery (8) electric connection, and switch (3) set up on connection pad (1).
3. The low-strain pile foundation detection measuring instrument according to claim 2, wherein a leveling ring (21) is fixedly connected to the bottom end of the impact barrel (22).
4. The low-strain detection instrument for the pile foundation according to claim 2, wherein a limiting ring (23) is fixedly connected to the middle of the impact barrel (22), and the thread part on the outer wall of the impact barrel (22) is located between the leveling ring (21) and the limiting ring (23).
5. The measuring instrument for detecting the low strain of the pile foundation according to claim 2, wherein a plurality of fixing feet (219) are uniformly and fixedly connected to the bottom surface of the fixing disc (211), an arc surface with the same diameter as that of the outer wall of the impact cylinder (22) is formed between the inner walls of the fixing feet (219), a fixture block (218) is fixedly connected to one side of the bottom end of each fixing foot (219) facing the impact cylinder (22), vertically arranged open grooves (216) are formed in positions, corresponding to the fixing feet (219), of the top end of the impact cylinder (22), a clamping groove (217) with the same shape as the fixture block (218) is formed in one side of the bottom end of each open groove (216), a containing groove (213) is formed in the other side of the bottom end of each open groove (216), a wedge block (215) is slidably mounted in each containing groove (213), and one side of each wedge block (215) facing the containing groove (213) is fixedly connected to one end of a third spring (214), the other end of the third spring (214) is fixedly connected with the inner wall of the accommodating groove (213), the top surface of the wedge-shaped block (215) is an inclined surface, and the bottom end of the inclined surface faces the clamping groove (217).
6. The on-site supervision system of the measuring instrument for detecting the low strain of the pile foundation comprises a low strain pile foundation dynamic measuring instrument (7), a wireless transmission module and an external central processing module, wherein the low strain pile foundation dynamic measuring instrument (7) is electrically connected with the wireless transmission module, and the wireless transmission module is electrically connected with the external central processing module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210615657.3A CN114960782B (en) | 2022-06-01 | 2022-06-01 | Measuring instrument for pile foundation low strain detection and on-site supervision system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210615657.3A CN114960782B (en) | 2022-06-01 | 2022-06-01 | Measuring instrument for pile foundation low strain detection and on-site supervision system |
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| CN114960782B CN114960782B (en) | 2023-11-21 |
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| CN211228627U (en) * | 2019-06-25 | 2020-08-11 | 李俏 | Building engineering foundation pile detection device |
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| CN211665809U (en) * | 2019-12-21 | 2020-10-13 | 武汉固地鼎兴工程技术有限公司 | Foundation pile dynamic testing instrument with automatic shock absorption function during transportation |
| CN213926405U (en) * | 2020-11-18 | 2021-08-10 | 无锡同济工程质量检测有限公司 | High strain method foundation pile detects guider |
-
2022
- 2022-06-01 CN CN202210615657.3A patent/CN114960782B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4852397A (en) * | 1988-01-15 | 1989-08-01 | Haggag Fahmy M | Field indentation microprobe for structural integrity evaluation |
| CN109811808A (en) * | 2019-02-19 | 2019-05-28 | 武汉岩海工程技术有限公司 | A kind of measuring instrument and field surveillance system for Low Strain Dynamic Testing of Piles |
| CN211228627U (en) * | 2019-06-25 | 2020-08-11 | 李俏 | Building engineering foundation pile detection device |
| CN211665809U (en) * | 2019-12-21 | 2020-10-13 | 武汉固地鼎兴工程技术有限公司 | Foundation pile dynamic testing instrument with automatic shock absorption function during transportation |
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| CN114960782B (en) | 2023-11-21 |
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