Force and electricity complementary detecting probe, and exceeded pouring detecting device and method

Abstract

The invention belongs to the field of bored pile detecting equipment and particularly relates to a force and electricity complementary detecting probe, and an exceeded pouring detecting device and method. The force and electricity complementary detecting probe comprises a shell, wherein a detecting circuit board, and an electrode ring and a torque motor electrically connected with the detecting circuit board are arranged in the shell; a resistivity measurement module and a torque measurement module are arranged on the detecting circuit board; a rotary baffle plate is fixedly arranged at the end part of the output shaft of the torque motor and is positioned at the external part of the shell; the torque motor provides different torques for the rotary baffle plate capable of bearing differentrotary resistances; and the torque measurement module records the torque information provided by the torque motor in real time. According to the force and electricity complementary detecting probe, electrical parameter method measurement and force parameter method measurement are combined, the advantages of the electrical parameter method and the force parameter method are complementary, and thetwo types of measurement methods verify mutually to more effectively monitor the concrete pouring state and control the exceeded pouring height in a refined manner.

Description

technical field [0001] The invention relates to the field of detection equipment for cast-in-place piles, in particular to a detection probe with complementary force and electricity and an overfill detection device and method. Background technique [0002] Bored piles have become one of the main foundation forms of buildings. The technology of underwater cast-in-place concrete is often used. In order to ensure the quality of the piles, it is often required that the concrete be poured to a certain height beyond the design elevation. Chisel off the super-irrigated part. Because the hole is filled with muddy water during the pouring process, due to the action of muddy water, part of the concrete dissolves in water to form concrete laitance, and the other part of concrete that does not dissolve in water is aggregate concrete. The aggregate concrete sinks continuously, driving the concrete laitance and slurry. The muddy water layer keeps rising and is discharged through the drai...

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Problems solved by technology

Chinese Patent No. CN201410833047.6 discloses a device and method for monitoring the concrete interface of bored cast-in-situ piles, which uses the difference in electrical impedance of water, mud and concrete to detect whether the concrete pouring has reached the height by measuring the difference in electrical properties; but during the pouring process, Because the muddy water and concrete are turning up and down, the fluid medium in the hole changes greatly, and the electrical parameter value changes sharply and is not easy to stabilize, which brings a certain error to the measurement; and the electrical parameters of the concrete laitance and the concrete with aggregate are relatively close, and often Creates a situation where it is difficult to distinguish between concrete laitance and aggregate concrete

However, due to the laitance layer on the top of the bored pile, the anisotropy of the laitance layer and the concrete layer particles, the serious phenomenon of ultrasonic scattering and diffusion, it is easy to cause defects such as low accuracy, poor reliability and poor stability of the detection results.

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