This study proposes a measurement method using angular sensors to measure deformation and displacement of bridges. The proposed measurement method consists of gyroscope sensors and data processor to transform angular to vertical displacement. This study contains experimental evaluation to verify the applicability of the proposed method. 4-points bending tests were conducted on a small-sized girder specimen. The displacements were measured with both conventional LVDT and gyroscope sensor to compare the accuracy of the proposed method. It is estimated that the method using gyroscope shows some noise in data, but the method using gyroscope has advantages to measure the vertical displacement. Therefore if the sampling rate and synchronizing problems can be approved, it can be a good alternative measuring method for the deformation of the bridges.

• 정치영(부산대학교 지진방재연구센터 연구교수, 공학박사) | Jung, Chi-Young 교신저자
• 박동욱(부산대학교 지진방재연구센터 연구교수, 공학박사) | Park, Dong-Uk
• 김남식(부산대학교 건설융합학부 교수, 공학박사) | Kim, Nam-Sik