CN112663688A - Ultrasonic detection method for bridge pile foundation with good lowering stability - Google Patents
Ultrasonic detection method for bridge pile foundation with good lowering stability Download PDFInfo
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- CN112663688A CN112663688A CN202011403141.XA CN202011403141A CN112663688A CN 112663688 A CN112663688 A CN 112663688A CN 202011403141 A CN202011403141 A CN 202011403141A CN 112663688 A CN112663688 A CN 112663688A
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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 relates to the technical field of foundation detection, in particular to an ultrasonic detection carrier for a bridge pile foundation; the ultrasonic probe carrier comprises a carrier body, wherein the upper part of the carrier body is connected with a cable, and the lower part of the carrier body is provided with a fixed seat for fixing an ultrasonic probe; the carrier body comprises a support pillar, a guide rail, a slide block, a spring, a roller, a first swing rod and a second swing rod; when the ultrasonic probe is transferred to the pre-buried test tube in the pile foundation and is detected, set up the detection carrier between hawser and ultrasonic probe, detect the carrier through setting up gyro wheel, pendulum rod mechanism and slider guide rail mechanism for when the detection carrier bears ultrasonic probe and descends, the gyro wheel can hug closely the test tube inner wall and descend steadily under the resilience force conduction of spring, avoid ultrasonic probe to transfer the in-process and take place the swing and influence the accuracy that detects.
Description
The invention patent named as an ultrasonic detection carrier for a bridge pile foundation is a divisional application with the application date of 2018, 12 and 04, and the application number of 201811472006.3 as a parent case.
Technical Field
The invention relates to the technical field of foundation detection, in particular to an ultrasonic detection carrier for a bridge pile foundation.
Background
The pile foundation can be in the inboard three ultrasonic detection pipes of evenly welding of steel cage before concreting, and it is downthehole to transfer to pile in advance when the steel cage to after concreting, three ultrasonic detection pipes form vertical detection channel, and it is that ultrasonic probe can reach the pile foundation bottom through detection channel, detects concrete quality and integrality in the pile foundation.
The basic principle of ultrasonic detection of concrete piles is the same as that of common concrete ultrasonic flaw detection, namely, one side of a pile converts electric energy into mechanical energy through a transmitting probe, the ultrasonic wave is transmitted to penetrate through the concrete pile, then the side ultrasonic wave is received and then is reduced into an electric signal through a receiving probe on the other side of the pile, the signal is amplified and can be displayed on an oscilloscope, the sound velocity transmitted in the concrete can be calculated according to the time of transmitting and reaching of sound wave pulse, the quality of the concrete of the pile body can be directly judged according to the sound velocity, the more dense the concrete is, the larger the sound velocity value is; conversely, the looser the concrete is, or the holes, cracks or segregation in the sound wave pulse path, the lower the sound speed is, so that the quality and integrity of the pile body concrete can be checked.
In traditional detection mode, ultrasonic probe is direct to be dragged by the hawser and transfers to the test tube in, transfers the in-process, because there is the clearance ultrasonic probe and test tube inner wall, transfers the in-process and takes place the swing easily, influences the accuracy that detects.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides an ultrasonic detection carrier of bridge pile foundation for ultrasonic transducer can steadily transfer to the test tube in, avoids influencing the detection accuracy because of ultrasonic transducer's swing among the testing process.
In order to solve the technical problems, the invention adopts the technical scheme that: the ultrasonic detection carrier for the bridge pile foundation comprises a carrier body, wherein the upper part of the carrier body is connected with a cable, and the lower part of the carrier body is provided with a fixed seat for fixing an ultrasonic probe;
the carrier body comprises a support pillar, a guide rail, a slide block, a spring, a roller, a first swing rod and a second swing rod;
the support column is vertically fixed in the middle of the carrier body, a guide rail in the vertical direction is arranged at the upper section of the support column, the slide block is sleeved on the guide rail in a sliding manner, the spring is sleeved outside the guide rail, the upper end of the spring abuts against the upper end of the support column, and the lower end of the spring abuts against the upper end of the slide block;
the lower end of the support column is hinged with more than 3 first swing rods; the lower end of the first swing rod is hinged to the lower end of the support column, the upper end of the first swing rod is hinged to the idler wheel, one end of the second swing rod is hinged to the middle of the first connecting rod, and the other end of the second swing rod is hinged to the side portion of the sliding block.
The invention has the beneficial effects that: according to the ultrasonic detection carrier mechanism for the bridge pile foundation, when the ultrasonic probe is lowered into the detection pipe pre-buried in the pile foundation to be detected, the detection carrier is arranged between the cable and the ultrasonic probe, and the detection carrier is provided with the roller, the swing rod mechanism and the sliding block guide rail mechanism, so that when the ultrasonic probe carried by the detection carrier descends, the roller can stably descend along the inner wall of the detection pipe under the conduction of the resilience force of the spring, and the detection accuracy is prevented from being influenced by the swinging of the ultrasonic probe in the lowering process.
Drawings
Fig. 1 is a schematic structural diagram of an ultrasonic detection carrier for a bridge pile foundation according to an embodiment of the present invention;
description of reference numerals:
1. a fixed seat; 2. a cable; 3. a detection tube; 4. a support pillar; 5. a guide rail; 6. a slider; 7. a spring; 8. a roller; 9. a first swing link; 10. a second swing link; 11. a cylinder; 12. adjusting a knob;
13. a protective bracket; 14. a weighting block; 15. a pressure controller.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: the detection carrier is through setting up gyro wheel, pendulum rod mechanism and slider guide rail mechanism for when detecting the carrier and bearing ultrasonic transducer decline, the gyro wheel can hug closely the test tube inner wall and descend steadily under the resilience force conduction of spring, avoids ultrasonic transducer to transfer the in-process and takes place the swing and influence the accuracy that detects.
Referring to fig. 1, the invention relates to an ultrasonic detection carrier for a bridge pile foundation, which comprises a carrier body, wherein the upper part of the carrier body is connected with a cable 2, and the lower part of the carrier body is provided with a fixed seat 1 for fixing an ultrasonic probe;
the carrier body comprises a support pillar 4, a guide rail 5, a slide block 6, a spring 7, a roller 8, a first swing rod 9 and a second swing rod 10;
the support column 4 is vertically fixed in the middle of the carrier body, a guide rail 5 in the vertical direction is arranged at the upper section of the support column 4, the slide block 6 is in sliding sleeve joint with the guide rail 5, the spring 7 is sleeved outside the guide rail 5, the upper end of the spring 7 abuts against the upper end of the support column 4, and the lower end of the spring 7 abuts against the upper end of the slide block 6;
the lower end of the support column 4 is hinged with more than 3 first swing rods 9; the lower end of the first swing rod 9 is hinged to the lower end of the support column 4, the upper end of the first swing rod is hinged to the idler wheel 8, one end of the second swing rod 10 is hinged to the middle of the first connecting rod, and the other end of the second swing rod is hinged to the side portion of the sliding block 6.
The working principle of the ultrasonic detection carrier of the bridge pile foundation is explained as follows: firstly, an ultrasonic probe is installed on a fixed seat 1, then a carrier body provided with the ultrasonic probe is placed into a detection tube 3 pre-buried in a pile foundation through a cable 2, when the carrier body is not placed in the detection tube 3, the horizontal distance between each roller 8 and the center of the carrier body is larger than the inner radius of the detection tube 3, when the carrier body is placed in the detection tube 3, each roller 8 contracts towards the center direction of the carrier body, a first swing rod 9 connected with each roller 8 swings towards the center direction of the carrier body so as to drive a second swing rod 10 to swing, one end of the second swing rod 10 connected with a sliding block 6 moves upwards so as to drive the sliding block 6 to move upwards along a guide rail 5, and because a spring 7 is sleeved outside the guide rail 5, in the process of moving upwards the sliding block 6, the spring 7 applies downward resilience force to the sliding block 6, so that the resilience force is transmitted to the roller 8 through the second swing rod 10 and the, the roller 8 is tightly attached to the inner wall of the detection tube 3 and rolls downwards, so that the ultrasonic probe connected with the lower part of the carrier body descends stably.
Among the ultrasonic detection carrier mechanism of above-mentioned bridge pile foundation, when ultrasonic transducer transferred to the pile foundation in pre-buried test tube 3 in detecting, set up the detection carrier between hawser 2 and ultrasonic transducer, the detection carrier is through setting up gyro wheel 8, pendulum rod mechanism and 6 guide rail 5 mechanisms of slider, make the detection carrier bear when ultrasonic transducer descends, 3 inner walls of test tube descend steadily hugging closely under spring 7's resilience force conduction gyro wheel 8, avoid ultrasonic transducer to transfer the in-process and take place the swing and influence the accuracy that detects.
Further, the ultrasonic detection carrier structure of the bridge pile foundation further comprises a pressure controller 15 and an air cylinder 11; the lower end of the supporting column 4 is connected with a vertically downward cylinder 11, the lower end of the first swing rod 9 is hinged to the piston end of the cylinder 11, the pressure controller 15 is arranged at the upper end of the sliding block 6, and the pressure controller 15 is electrically connected with the cylinder 11.
As is apparent from the above description, by providing the vertically downward cylinder 11 at the lower end of the supporting pole 4, and providing the pressure controller 15 at the upper end of the slider 6, the roller 8 contacts the inner wall of the detection pipe to bear the pressure transmitted by the inner wall of the detection pipe, the pressure is transmitted to the sliding block 6 through the first swing rod 9 and the second swing rod 10, so that the sliding block 6 has the potential energy of sliding upwards, the slider 6 is subjected to the downward pressure of the spring 7, so that the pressure controller 15 senses the corresponding pressure value, the stroke of the cylinder 11 is controlled by the pressure value, the included angle between the first swing rod 9 and the supporting column 4 can be adjusted by the piston of the cylinder 11, so as to adjust the distance between the roller 8 and the center of the carrier body in a free state according to the inner diameter of the detection tube 3, thereby make the carrier body both put into detecting tube 3 easily down, can guarantee again that gyro wheel 8 hugs closely 3 inner walls of detecting tube steady decline.
Furthermore, in the ultrasonic testing carrier structure for the bridge pile foundation, the upper end of the guide rail 5 is connected with an adjusting knob 12 through threads, and the upper end of the spring 7 abuts against the lower end of the adjusting knob 12.
From the above description, the tightness of the spring 7 is adjusted by the adjusting knob 12, so that the spring 7 transmits a suitable resilience force to the roller 8, and further the carrier body can be more stably and rapidly descended in the detecting tube 3.
Further, among the ultrasonic testing carrier structure of above-mentioned bridge pile foundation, still include protective bracket 13, protective bracket 13 sets up in fixing base 1 below.
As can be known from the above description, set up protective bracket 13 below fixing base 1, when ultrasonic transducer installs on fixing base 1, protective bracket 13 wraps up in the ultrasonic transducer outside, and when making the carrier body place detecting tube 3 down, protective bracket 13 can keep out intraductal filth for ultrasonic transducer, avoids ultrasonic transducer direct contact filth and influences the accuracy that detects.
Further, in the ultrasonic detection carrier structure of the bridge pile foundation, a weighting block 14 is arranged at the lower end of the protection bracket 13.
As can be seen from the above description, by providing the weight 14 at the lower end of the protective bracket 13, the stable descending of the carrier body vertically downward can be further ensured.
Furthermore, in the ultrasonic testing carrier structure for the bridge pile foundation, the number of the first swing rods 9 is 3, the number of the second swing rods 10 is 3, and the number of the rollers 8 is 3.
As can be seen from the above description, the 3 first swing rods 9 enable the connected rollers 8 to form a three-foot standing situation, so that the cost is saved, and the carrier body can be stably attached to the inner wall of the detection tube 3 when descending.
Further, in the ultrasonic testing carrier structure for a bridge pile foundation, the first swing link 9 is made of 304 stainless steel.
From the above description, the first swing link 9 is made of 304 stainless steel, which has the advantages of high strength, corrosion resistance and long service life, and further ensures that the carrier body can stably descend in the detection tube 3.
Further, in the ultrasonic testing carrier structure for a bridge pile foundation, the second swing link 10 is made of 304 stainless steel.
From the above description, the second swing link 10 is made of 304 stainless steel, which has the advantages of high strength, corrosion resistance and long service life, and further ensures that the carrier body can stably descend in the inspection pipe 3.
Further, in the ultrasonic detection carrier structure for a bridge pile foundation, the weight 14 is made of UHPC.
From the above description, it can be seen that the weight 14 has the functions of blocking dirt and guiding vertically, and UHPC has the advantages of high strength and corrosion resistance, so that the weight 14 made of UHPC has a longer service life.
Furthermore, in the ultrasonic detection carrier structure of the bridge pile foundation, the roller 8 is made of nylon.
As can be seen from the above description, the roller 8 made of nylon has a certain elasticity, so that when the carrier body descends in the detection tube 3, the roller 8 can cling to the inner wall of the detection tube 3, and the carrier body is further ensured to descend stably.
Example 1
An ultrasonic detection carrier for a bridge pile foundation comprises a carrier body, wherein the upper part of the carrier body is connected with a cable 2, and the lower part of the carrier body is provided with a fixed seat 1 for fixing an ultrasonic probe; the carrier body comprises a support pillar 4, a guide rail 5, a slide block 6, a spring 7, a roller 8, a first swing rod 9 and a second swing rod 10; the support column 4 is vertically fixed in the middle of the carrier body, a guide rail 5 in the vertical direction is arranged at the upper section of the support column 4, the slide block 6 is in sliding sleeve joint with the guide rail 5, the spring 7 is sleeved outside the guide rail 5, the upper end of the spring 7 abuts against the upper end of the support column 4, and the lower end of the spring 7 abuts against the upper end of the slide block 6; the lower end of the support column 4 is hinged with more than 3 first swing rods 9; the lower end of the first swing rod 9 is hinged to the lower end of the support column 4, the upper end of the first swing rod is hinged to the idler wheel 8, one end of the second swing rod 10 is hinged to the middle of the first connecting rod, and the other end of the second swing rod is hinged to the side portion of the sliding block 6.
Also comprises a pressure controller 15 and a cylinder 11; the lower end of the supporting column 4 is connected with a vertically downward cylinder 11, the lower end of the first swing rod 9 is hinged to the piston end of the cylinder 11, the pressure controller 15 is arranged at the upper end of the sliding block 6, and the pressure controller 15 is electrically connected with the cylinder 11.
The pressure controller 15 includes a pressure sensor and an AT89C51 single chip microcomputer, and the AT89C51 single chip microcomputer sets a corresponding program to adjust the ventilation amount of the cylinder 11, so as to control the stroke of the cylinder 11.
The ultrasonic detection carrier of bridge pile foundation still includes protective bracket 13, protective bracket 13 sets up in fixing base 1 below. The lower end of the protective bracket 13 is provided with a weighting block 14. The first swing link 9 is made of 304 stainless steel. The second swing link 10 is made of 304 stainless steel. The weight 14 is made of UHPC. The roller 8 is made of nylon.
In summary, in the ultrasonic detection carrier mechanism for a bridge pile foundation provided by the invention, when the ultrasonic probe is lowered into the detection pipe pre-buried in the pile foundation, the detection carrier is arranged between the cable and the ultrasonic probe, and the detection carrier is provided with the roller, the swing rod mechanism and the slider guide rail mechanism, so that when the detection carrier bears the ultrasonic probe and descends, the roller can stably descend along the inner wall of the detection pipe under the conduction of the resilience force of the spring, and the detection accuracy is prevented from being influenced by the swinging of the ultrasonic probe in the lowering process.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (3)
1. The ultrasonic detection method for the bridge pile foundation with good downward placement stability is characterized by comprising a carrier body, wherein the upper part of the carrier body is connected with a cable, and the lower part of the carrier body is provided with a fixed seat for fixing an ultrasonic probe;
the carrier body comprises a support pillar, a guide rail, a slide block, a spring, a roller, a first swing rod and a second swing rod;
the support column is vertically fixed in the middle of the carrier body, a guide rail in the vertical direction is arranged at the upper section of the support column, the slide block is sleeved on the guide rail in a sliding manner, the spring is sleeved outside the guide rail, the upper end of the spring abuts against the upper end of the support column, and the lower end of the spring abuts against the upper end of the slide block;
the lower end of the support column is hinged with more than 3 first swing rods; the lower end of the first swing rod is hinged to the lower end of the support column, the upper end of the first swing rod is hinged to a roller, one end of the second swing rod is hinged to the middle of the first connecting rod, and the other end of the second swing rod is hinged to the side portion of the sliding block;
the detection method comprises the following steps:
the ultrasonic probe is arranged on the fixed seat, then the carrier body provided with the ultrasonic probe is put into a detection pipe pre-buried in the pile foundation through a cable, when the carrier body is not put in the detection tube, the horizontal distance between each roller and the center of the carrier body is larger than the inner radius of the detection tube, when the carrier body is placed in the detection tube, each roller contracts towards the center direction of the carrier body, the first swing rod connected with each roller swings towards the center direction of the carrier body, thereby driving the second swing link to swing, and the end of the second swing link connected with the slide block moves upwards, thereby driving the slide block to move upwards along the guide rail, in the process that the sliding block moves upwards, the spring applies downward resilience force to the sliding block, so that the resilience force is transmitted to the roller through the second swing rod and the first swing rod, the roller is tightly attached to the inner wall of the detection pipe to roll downwards, and the ultrasonic probe connected to the lower portion of the carrier body is enabled to stably descend.
2. The ultrasonic detection method for the downward-falling bridge pile foundation with good stability according to claim 1, characterized by further comprising a pressure controller and an air cylinder; the lower end of the supporting column is connected with a vertically downward air cylinder, the lower end of the first swing rod is hinged to the piston end of the air cylinder, the pressure controller is arranged at the upper end of the sliding block and is electrically connected with the air cylinder, the pressure controller senses a corresponding pressure value, and the stroke of the air cylinder is controlled through the pressure value.
3. The ultrasonic testing method for the downward-falling stable bridge pile foundation according to claim 1, wherein the upper end of the guide rail is connected with an adjusting knob through threads, the upper end of the spring abuts against the lower end of the adjusting knob, and the adjusting knob enables the spring to achieve proper tightness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403141.XA CN112663688B (en) | 2018-12-04 | 2018-12-04 | Ultrasonic detection method for bridge pile foundation with good lowering stability |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403141.XA CN112663688B (en) | 2018-12-04 | 2018-12-04 | Ultrasonic detection method for bridge pile foundation with good lowering stability |
| CN201811472006.3A CN109469115B (en) | 2018-12-04 | 2018-12-04 | Ultrasonic detection carrier for bridge pile foundation |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811472006.3A Division CN109469115B (en) | 2018-12-04 | 2018-12-04 | Ultrasonic detection carrier for bridge pile foundation |
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| Publication Number | Publication Date |
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| CN112663688A true CN112663688A (en) | 2021-04-16 |
| CN112663688B CN112663688B (en) | 2022-01-28 |
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| CN201811472006.3A Active CN109469115B (en) | 2018-12-04 | 2018-12-04 | Ultrasonic detection carrier for bridge pile foundation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114045887A (en) * | 2021-11-23 | 2022-02-15 | 浙江广川工程咨询有限公司 | Bored concrete pile wall and pile bottom detection device |
| CN114541378A (en) * | 2022-01-12 | 2022-05-27 | 中国建筑第八工程局有限公司 | Drilling tool device for repairing pile foundation defects and pile foundation defect repairing method |
| CN114622604A (en) * | 2022-03-04 | 2022-06-14 | 衢州市交科工程检测有限公司 | Fixing structure and fixing method of ultrasonic detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110579190B (en) * | 2019-09-19 | 2021-05-04 | 浙江安通工程技术咨询有限公司 | Bridge detection auxiliary device utilizing ultrasonic panoramic imaging principle |
| CN114563480B (en) * | 2022-04-28 | 2022-07-15 | 四川蜀工公路工程试验检测有限公司 | Road concrete structure strength detection device |
| CN117364858B (en) * | 2023-12-05 | 2024-03-22 | 廊坊市翔宇工程咨询有限公司 | Bridge foundation pile detection device based on ultrasonic technology |
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| CN114541378A (en) * | 2022-01-12 | 2022-05-27 | 中国建筑第八工程局有限公司 | Drilling tool device for repairing pile foundation defects and pile foundation defect repairing method |
| CN114541378B (en) * | 2022-01-12 | 2023-10-13 | 中国建筑第八工程局有限公司 | Drilling tool device for repairing pile foundation defect and pile foundation defect repairing method |
| CN114622604A (en) * | 2022-03-04 | 2022-06-14 | 衢州市交科工程检测有限公司 | Fixing structure and fixing method of ultrasonic detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109469115A (en) | 2019-03-15 |
| CN112663688B (en) | 2022-01-28 |
| CN109469115B (en) | 2020-11-20 |
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