Device and method for measuring concrete overfilling height through preinstalled pipes

Abstract

The invention discloses a device and method for measuring the concrete overfilling height through preinstalled pipes. The device comprises the two preinstalled pipes, a grouting pipe, a control system, two acoustic wave transducers, an acoustic wave generator and a signal collection and analysis device. The two preinstalled pipes are fixed to the inner walls of the two sides of a grouting retaining cylinder in parallel, the grouting pipe is arranged to stretch into the grouting retaining cylinder and used for pouring concrete mortar into the grouting retaining cylinder, and a grouting port isformed, the control system comprises a grouting opening position controller, a transducer position controller and a control module, the grouting opening position controller is electrically connected with the grouting pipe and used for controlling an executing mechanism to complete gradual upward movement of a grouting opening, the two acoustic wave transducers are arranged in the two preinstalledpipes correspondingly and electrically connected with the transducer position controller, the acoustic wave generator is electrically connected with the control module and the transducer position controller, and the signal collection and analysis device is electrically connected with the control module and the grouting opening position controller and used for tracking the acoustic wave signal frequency and collecting and analyzing the acoustic wave signal transmission time and attenuation degree.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a device and method for measuring the superfill height of concrete by using a pre-installed pipe. Background technique [0002] With the rapid development of infrastructure projects, the grouting construction process of foundation piles is a key link in the entire project and an important guarantee for the smooth execution of the construction progress and safety. Acoustic detection is more and more popular in the monitoring of concrete foundation piles due to its advantages such as high monitoring accuracy, no restrictions on pile length and pile diameter, and no blind area in the test. Usually, two acoustic tubes are pre-installed in the process of concrete overfilling to ensure that the material strength, welding process and smoothness of the acoustic tubes meet the conditions. It is necessary to place the transmitting transducer and the receiving transducer in...

AI Technical Summary

Problems solved by technology

[0003] However, the monitoring results of acoustic detection will be directly affected by the installation conditions of the acoustic tube and the welding process

As the acoustic measuring tube will be inclined or bent due to the extrusion of concrete, the distance between the tubes will become larger or smaller, which will directly affect the analysis and judgment of the monitoring results

At the same time, the dynamic changes of the concrete mortar during the pouring process and the non-uniformity of the mortar and mud itself increase the difficulty of acoustic wave detection and the analysis of acoustic signals

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