Abstract

Info

Title:: Cracking Damage Process Monitoring of RC Frame Structure Based on Piezoelectric Ceramic Transducers

Author(s):: SUN Wei; YAN Shi; JIANG Shao-fei; CHEN Xin; School of Civil Engineering, Fuzhou University

Keywords:: piezoelectric ceramic transducer; RC frame structure; dynamic load; crack damage; process monitoring

Abstract:: Based on piezoelectric ceramic transducers, a cracking damage process monitoring of reinforced concrete (RC) frame structure under dynamic load was conducted. In the test, some piezoelectric transducers were buried into a two-span and two-story RC frame structure; the pseudo dynamic load and static load were applied on the model structure respectively. The cracking damage process of structure under the load was monitored. Moving average method was used in data smooth processing. The results show that the method is effective for monitoring the development tendency of structure health situation in long-term period. But monitoring data has volatility caused by environmental factors, which brings certain difficulty for damage identification. It will get better results after the data processing by moving average method. The concrete crack damage monitoring method based on piezoelectric ceramic transducers is fit for a long-term monitoring of structure, and the effective measure of data processing is significant for the damage identification.