Application of Piezoelectric Materials in Structural Health Monitoring of Civil Engineering Structure

Abstract

Aimed at the high water and high alkali environment in concrete, a small embedded piezoelectric ceramic sensor for monitoring reinforced concrete structure is developed, and its basic performance parameters are given. According to the working principle of the charge amplifier, the formula of the output voltage of the piezoelectric ceramic sensor subjected to vertical uniform force is deduced according to the piezoelectric equation. According to the test results of the sensor performance, the performance parameters of the sensor with different sizes of piezoelectric ceramics are compared.