Quick positioning device for detecting hollow pile through low strain method
A technology of positioning device and low-strain method, which is applied in the field of detection and can solve problems such as large position errors
Pending Publication Date: 2021-08-06
李正潮
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Problems solved by technology
[0006] The invention provides a fast positioning device for detecting hollow piles by a low strain method, which solves the problem of large position errors when testers locate the excitation points and detection points of hollow piles through their senses
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[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0022] Please refer to figure 1 , figure 2 and image 3 ,in, figure 1 A structural schematic diagram of a preferred embodiment of the low strain method detection hollow pile quick positioning device provided by the present invention; figure 2 for figure 1 The top view of the whole shown; image 3 for figure 1 Bottom view of the whole shown.
[0023] A rapid positioning device for detecting hollow piles by a low-strain method includes: a positioning column 1, and a casing hole 101 is opened at the bottom of the positioning column 1;
[0024] At least two sets of sensor installation points 2, at least two sets of sensor installation points 2 are set on the top of the positioning column 1;
[0025] There are at least two groups of vibration-hammering application points 3 , and at least two groups of vibration-hammering application points 3 are se...
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The invention provides a quick positioning device for detecting a hollow pile through a low strain method. The quick positioning device for detecting the hollow pile through the low strain method involves a positioning column, at least two sensor installing and drawing points and at least two excitation hammering drawing points, wherein a sleeve hole is formed in the bottom of the positioning column, the at least two sensor installing and drawing points are arranged at the top of the positioning column, and the at least two excitation hammering drawing points are arranged at the top of the positioning column. According to the quick positioning device for detecting the hollow pile through the low strain method, the top end of the head of the hollow pile is sleeved with the positioning column, the inner diameter of the hollow pile is the same as the inner diameter of the positioning column, a sensor is installed on a sensor installation drawing point which is drawn and positioned, excitation hammering is conducted on an excitation hammering drawing point which is drawn and positioned, and then detection data is collected through the installed sensor, and naked eye centering of detection personnel does not need.
Description
technical field [0001] The invention relates to the technical field of detection, in particular to a fast positioning device for detecting hollow piles by a low-strain method. Background technique [0002] At present, Article 8.3.4 of "Technical Specifications for Building Foundation Pile Inspection" (JGJ 106-2014) stipulates that the excitation point and detection point of the hollow pile should be 1 / 2 of the pile wall thickness, and the excitation point and detection point should be the same as that of the pile. The angle formed by the center line should be 90°; the theoretical research in the description of 8.3.4 shows that: when the solid pile installation point is about 2 / 3 of the radius R from the pile center, the interference is relatively small; the hollow pile installation point and A similar effect is also obtained when the angle between the excitation point planes is equal to or slightly greater than 90°, which is equivalent to the stagnation point of the low-orde...
Claims
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CPCE02D33/00
Inventor 李正潮马晓琳姜鹏李发江王阔潘磊
Owner 李正潮