Foundation pile ultrasonic detection zero sound time calibration device

Abstract

The utility model provides a foundation pile ultrasonic detection zero sound time calibration device, which comprises a water tank, a positioning frame, a first transmitting transducer and a second receiving transducer, the positioning frame is placed in the water tank, and the positioning frame comprises an upper positioning plate and a lower fixing plate; the upper positioning plate and the lower fixing plate are connected through six height adjusting bolts to form a frame structure with an upper layer and a lower layer, a first upper through hole is formed in one side of the upper positioning plate, a first lower through hole is formed in the position, corresponding to the upper through hole, of the lower fixing plate, and the first transmitting transducer is inserted into the first upper through hole and the first lower through hole; the upper positioning plate is provided with a row of second upper through holes, the lower fixing plate is also provided with a row of second lower through holes, and the second receiving transducers are inserted into the second upper through holes and the second lower through holes. The system delay calibration device is simple in structure and convenient to operate, not only solves the problems that existing system delay calibration devices are uneven, inconvenient to operate, large in error and the like, but also improves the working efficiency of detection and reduces the engineering cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction engineering detection, and particularly relates to a zero-sound time calibration device for ultrasonic detection of foundation piles. Background Art

[0002] Pile foundations are an ancient and widely used form of foundation, consisting of a cap and single or group piles buried in the soil. Their function is to transfer all or part of the superstructure load to the foundation soil or rock strata, making them a crucial component of building structures. As a concealed project, the quality of pile foundations is directly related to the safety of the entire structure. With the increasing application of pile foundations in construction, the control of pile foundation construction quality is directly related to the success or failure of the project. Therefore, pile foundation testing is a crucial task that cannot be ignored. As an important means of pile foundation quality control, pile foundation nondestructive testing technology is gaining increasing attention in modern construction projects. In particular, the combined application of several testing methods during the testing of a single pile allows for a comprehensive assessment of existing pile foundation problems and a feasibility assessment of the overall quality of a particular project's local pile foundation, further guiding on-site construction operations.

[0003] Ultrasonic testing, as an important means and method for nondestructive testing of pile foundations, has a working efficiency that directly impacts the progress of construction units and the profitability of testing units. Zero-time calibration is a crucial step in ultrasonic testing technology, primarily used to determine the zero-time of the ultrasonic instrument system, thereby more accurately measuring the wave velocity of various sections of the pile body and providing a basis for determining the integrity of the pile concrete. Currently, the testing instruments provided by domestic ultrasonic testing instrument suppliers are largely similar. Existing system delay calibration equipment varies widely, is overly simple, inconvenient to operate, and suffers from large errors. With the gradual upgrading of pile foundation testing equipment, it is imperative to improve and enhance its important auxiliary devices in order to better serve construction projects and enhance testing efficiency and safety and quality levels. Summary of the Invention

[0004] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a zero-sound time calibration device for ultrasonic detection of pile foundations, which can be widely used in the calibration of the delay time of ultrasonic detection systems, thereby effectively reducing engineering costs and improving engineering efficiency.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] The calibrating device of ultrasonic detection of foundation piles at zero sound time comprises a water tank, a positioning frame, a first transmitting transducer and a second receiving transducer, the water tank being a rectangular parallelepiped structure and filled with clean water, the positioning frame being placed in the water tank, the positioning frame comprising an upper positioning plate and a lower fixing plate, the upper positioning plate and the lower fixing plate being made of transparent acrylic material and having the same size, the upper positioning plate and the lower fixing plate being connected to form an upper and lower two-layer frame structure by six height adjustment bolts, a first upper through hole being provided on one side of the upper positioning plate, a first lower through hole being provided on the lower fixing plate corresponding to the position of the upper through hole, the first transmitting transducer being inserted into the first upper through hole and the first lower through hole, a row of second upper through holes being provided on the upper positioning plate on the other side relative to the first through hole, the second upper through holes being arranged in a straight line with the first upper through hole; the lower fixing plate having the same structure as the upper positioning plate, a row of second lower through holes being provided on the lower fixing plate, the position of the second lower through holes corresponding to the position of the second upper through hole, the second receiving transducer being inserted into the second upper through hole and the second lower through hole.

[0007] Furthermore, the specifications of the water tank are 1.2 meters in length, 0.4 meters in width, and 0.35 meters in height, and the water tank is made of plastic sheets.

[0008] Furthermore, there are four second upper through holes, the distance between every two second upper through holes is 5 centimeters, and the accuracy of the hole distance between the second upper through holes is 1 mm.

[0009] Furthermore, the distance between the first upper through hole and the nearest second upper through hole is 40 cm. Compared with the prior art, the present invention has the following beneficial effects:

[0010] The utility model has a simple structure and is easy to operate. It not only solves the problems of uneven delay calibration equipment in the existing system, inconvenient operation and large errors, but also greatly simplifies the preliminary preparation work for ultrasonic testing of pile foundations, improves the work efficiency of testing, and effectively reduces engineering costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attachment Figure 1 This is a structural diagram of the zero-sound calibration device for ultrasonic detection of pile foundations according to the present invention;

[0012] Attachment Figure 2 It is a top view of the utility model;

[0013] Attachment Figure 3 It is attached Figure 1 Schematic diagram of the structure of the positioning frame shown. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0015] like Figure 1 、 Figure 2 As shown, a zero-sound calibration device for ultrasonic detection of foundation piles includes a water tank 1, a positioning frame 2, a first transmitting transducer 3 and a second receiving transducer 4. The water tank 1 is a rectangular parallelepiped structure, and the bottom end of the water tank 1 is closed to form a water tank structure. The specifications of the water tank 1 are 1.2 meters long, 0.4 meters wide, and 0.35 meters high. The water tank 1 is made of plastic sheet and is filled with clean water. The positioning frame 2 is placed in the water tank 1. Figure 3 As shown, the positioning frame 2 includes an upper positioning plate 21 and a lower fixing plate 22. The upper positioning plate 21 and the lower fixing plate 22 are both made of transparent acrylic material and are the same size. The upper positioning plate 21 and the lower fixing plate 22 are connected to form a two-layer frame structure through six height adjustment bolts 23. The height adjustment bolts 23 can adjust the distance between the upper positioning plate 21 and the lower fixing plate 22. A first upper through hole 211 is provided on one side of the upper positioning plate 21, and a first lower through hole 221 is provided on the lower fixing plate 22 corresponding to the position of the upper through hole 211. The first transmitting transducer 3 is inserted into the first upper through hole 211 and the first lower through hole 221. The other side of the upper positioning plate 21 relative to the first through hole 211 A row of second upper through holes 212 is provided, and the second upper through holes 212 are arranged in a straight line and are in the same line with the first upper through holes 211. There are 14 second upper through holes 212, and the distance between each two second upper through holes 212 is 5 cm. The accuracy of the hole spacing between the second upper through holes 212 is 1 mm, and the distance between the first upper through hole 211 and the nearest second upper through hole 212 is 40 cm; the lower fixing plate 22 has the same structure as the upper positioning plate 21, and a row of second lower through holes 222 is also provided on the lower fixing plate 22, and the positions of the second lower through holes 222 correspond to the positions of the second upper through holes 212, and the second receiving transducer 4 is inserted into the second upper through hole 212 and the second lower through hole 222.

[0016] The working principle of this utility model is as follows:

[0017] First, fill the water tank 1 with clean water to a depth of about 0.35m, insert the first transmitting transducer 3 into the first upper through hole 211 and the first lower through hole 221, and insert the second receiving transducer 4 into the group of second upper through holes 212 and second lower through holes 222 closest to the first upper through hole 211. After measuring the relevant data, insert the second receiving transducer 4 into the second upper through hole 212 and second lower through hole 222 in the latter group, record the acoustic time data of no less than 5 points in turn, and make a linear regression time-distance curve to obtain the system delay time, thereby completing the calibration of the ultrasonic detection instrument equipment.

[0018] The utility model has a simple structure and is easy to operate. It not only solves the problems of uneven delay calibration equipment in the existing system, inconvenient operation and large errors, but also greatly simplifies the preliminary preparation work for ultrasonic testing of pile foundations, improves the work efficiency of testing, and effectively reduces engineering costs.

[0019] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A zero-time calibration device for ultrasonic detection of foundation piles, comprising a water tank, a positioning frame, a first transmitting transducer, and a second receiving transducer, characterized in that: The water tank is a rectangular structure with clean water loaded in it. The positioning frame is placed in the water tank. The positioning frame includes an upper positioning plate and a lower fixing plate. The upper positioning plate and the lower fixing plate are both made of transparent acrylic material and are the same size. The upper positioning plate and the lower fixing plate are connected to each other through six height adjustment bolts to form a two-layer frame structure. A first upper through hole is provided on one side of the upper positioning plate, and a first lower through hole is provided on the lower fixing plate corresponding to the position of the upper through hole. The first transmitting transducer is inserted into the first upper through hole and the first lower through hole. A row of second upper through holes is provided on the upper positioning plate on the other side relative to the first through hole. The second upper through holes are arranged in a straight line and are on the same line as the first upper through hole. The lower fixing plate has the same structure as the upper positioning plate. A row of second lower through holes is also provided on the lower fixing plate. The position of the second lower through hole corresponds to the position of the second upper through hole. The second receiving transducer is inserted into the second upper through hole and the second lower through hole.

2. The zero-time calibration device for ultrasonic detection of pile foundation according to claim 1, characterized in that: The specifications of the water tank are 1.2 meters long, 0.4 meters wide and 0.35 meters high. The water tank is made of plastic sheets.

3. The zero-time calibration device for ultrasonic detection of pile foundation according to claim 1, characterized in that: There are four second upper through holes, the distance between every two second upper through holes is 5 cm, and the accuracy of the hole distance between the second upper through holes is 1 mm.

4. The zero-time calibration device for ultrasonic detection of pile foundations according to claim 1, characterized in that: The distance between the first upper through hole and the nearest second upper through hole is 40 centimeters.

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