EARTHQUAKE DAMAGE DETECTION IN STRUCTURES AND EARLY WARNING
The ability to monitor the health of an instrumented structure, detect damage as it occurs, and issue an early warning during or soon after the earthquake (or some other natural or man made disaster), and before physical inspection is possible, has significant potential benefits in reducing loss of life and injuries, in emergency response, and in recovery following the disaster. The timeliness of such information, even when the damage is obvious or there is no structural damage, is very useful to a building owner, of an important business or a critical facility. To be practically useful, the structural health monitoring systems must be robust when applied to real data, reliable, and sufficiently sensitive and accurate. This paper reviews briefly the current methods, trends and outstanding issues in practical implementation of such systems, with emphasis on a new method based on detecting changes in wave travel times using impulse response functions. This method can be viewed as an intermediate scale method, bridging the gap between the NDT and global vibrational methods. Results are shown as proof of concept studies using data from full scale buildings.
Earthquake damage detection early warning health monitoring waves in buildings impulse response function Van Nuys hotel Imperial County Services building.
M.I. Todorovska M. D. Trifunac
Res. Prof., Dept. of Civil Engng., Univ. of Southern Cal., Los Angeles, CA 9089-2531, U.S.A. Prof., Dept. of Civil Engng., Univ. of Southern Cal., Los Angeles, CA 9089-2531, U.S.A.
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）