A system and method for non-destructive real-time detection of pile foundation based on potential signal

Abstract

The invention discloses a pile foundation non-destructive real-time detection system and method based on a potential signal, which is suitable for simulating the force state of an underground pile foundation in a laboratory and monitoring pile foundation damage, and is also suitable for pile foundation damage of a building on site monitoring and evaluation. Under laboratory conditions, the pile foundation is loaded with a reaction beam loading device to simulate the load on the pile foundation in actual use. Under field conditions, no load is applied to the pile foundation. Electrodes are installed at different positions on the surface of the pile foundation under test. The connecting line collects the potential signal, and evaluates the damage of the pile foundation according to the monitored change in the surface potential signal of the pile foundation, so as to realize the judgment and evaluation of whether the pile foundation is damaged, the location of the damage, and the degree of damage. The invention has simple operation and good detection effect, and can realize the non-destructive detection of the safety of the pile foundation deeply buried in the ground without destroying the structure of the pile foundation itself, and evaluates whether the pile foundation is damaged or destroyed according to the change rule of the continuous detection data .

Description

Technical field [0001] The present invention belongs to the field of pile foundation detection, and more particularly to a pile foundation lossless real-time detection system and method based on a potential signal. Background technique [0002] The bracket pile has the advantages of high carrying capacity, small settlement, simple construction machine, is an important bearing structure in the building base, the stability of the pile foundation and the safety status of the whole building. The superiority of the bracket gradually appears in a large number of engineering practices, but the pile foundation is usually underground or underwater, and the detection of its stability and damage is currently used is the outdoor static load loading method. [0003] The usual pile base static load method is to form a load platform by equilibrating the steel beam on the top of the pile foundation, and then form a load bearing platform in the balance steel beam or the concrete beam plate. When ...

AI Technical Summary

Problems solved by technology

However, when there are uneven layers with large impedance differences around the pile foundation, there will be large differences in the propagation speed of the mechanical wave transmission, which will cause misjudgment of the time inflection point and affect the detection results.

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