System for monitoring crack of piezoelectric-array converged alertness network structure and monitoring and installing methods

Abstract

The invention discloses a system for monitoring crack of piezoelectric-array converged alertness-network structure; on the basis of a bionic monitoring unit formed by the crossing of a plurality of mutually-insulated alertness lines, a piezoelectric array consisting of piezoelectric sensing elements is added; therefore, not only structural surface crack is accurately judged by the monitoring of the alertness line, but also structural internal stress field quantity is judged by piezoelectric signals of the piezoelectric elements, thereby acquiring analysis results such as potential bearing capacity and hazardous state pre-judgment before the crack appears and the depth and structural stress release state after the crack appears. The system can realize all-around and tri-dimensional damage detection of the engineering structure, which is a monitoring system with reliable use, high efficiency, low cost and correct result; simultaneously, the invention also discloses monitoring and installing methods of the piezoelectric-array converged alertness network structure crack monitoring system.

Description

technical field [0001] The invention relates to a crack monitoring system and a monitoring and installation method of a piezoelectric array fusion smart net structure. Background technique [0002] The development of disease, performance degradation and structural failure of most large concrete structures originate from the occurrence and development of cracks. Therefore, the crack problem is the most important content in the research on the health and safety of concrete structures. Timely detection and mastery of concrete cracks will enable timely grasp of the structural state, and effective measures (such as grouting, reinforcement, etc.) can be taken to reduce maintenance requirements, prolong the service life of the structure, and avoid loss of life and property due to damage and collapse. [0003] Currently, effective monitoring methods for cracks in concrete structures are limited. The methods proposed by experts and scholars at home and abroad mainly include: a. usin...

AI Technical Summary

Problems solved by technology

However, this kind of bionic monitoring method cannot accurately judge the non-apparent information such as the internal deformation field of the structure, the internal depth and range of the crack, so it is difficult to judge the potential bearing capacity before the crack appears, the pre-judgment of the dangerous state, and the depth and structural stress after the crack appears. state of release

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