To simply and highly accurately perform health monitoring of a concrete structure.
Stress applied to a concrete structure 12 can be directly measured from a voltage value generated in accordance with a distortion change transmitted to a piezoelectric sensor element 14 sealed in the concrete structure 12. A sound propagated through a solid such as a knock sound can be detected as vibration, dynamic displacement on a position where the piezoelectric sensor element 14 in the concrete structure 12 is sealed can be also detected and the detected result can be converted into inner stress and evaluated by performing arithmetic processing by analysis means 20. Consequently a degree of damage of the concrete structure 12 can be simply and accurately grasped by mutually comparing voltage values before and after lapse of predetermined time (e.g. a legal periodical inspection) or voltage values measured before and after a predetermined event (e.g. an earthquake).
| JP2009162661A | 2009-07-23 | |||
| JP2001201373A | 2001-07-27 | |||
| JP2006275698A | 2006-10-12 | |||
| JP2004301792A | 2004-10-28 | |||
| JP2001099760A | 2001-04-13 | |||
| JPH07159259A | 1995-06-23 |
| WO2004046704A1 | 2004-06-03 |
Miyazaki Yoshio
Kaoru Onozuka
Akio Tagami
High Masahiro