NEHRP Clearinghouse

Title
A Rule-Inference Method for Damage Assessment of Existing Structures.
File
PB81119521.pdf
Author(s)
Ishizuka, M.; Fu, K. S.; Yao, J. T. P.
Source
National Science Foundation, Washington, DC. Engineering and Applied Science., July 1980, 13 p.
Identifying Number(s)
CE-STR-80-8
Abstract
A damage assessment methodology to determine the damage states of existing structures after an earthquake is described. A definitive and rational methodology can contribute to correct decisions in repairing structures, predicting future damage, and improving technologies for aseismic structures. The proposed approach implements an inference or reasoning procedure similar to that used by experts in computer programming. It consists of a question-and-answer subsystem which facilitates an efficient interactive man-machine interface and responds upon request of the user and controller to collect necessary data for assessment. Data include field observations and as much structural information as possible with respect to the building being assessed. Time-records of the accelerometers located in various stories are analyzed in the pattern recognition system. A block of control, inference and classification sends requests to the connected blocks to accept necessary information. The inference is performed consulting a knowledge base, and the result is classified into one of the damage state categories and reported through output processing. Recent full-scale dynamic test will be useful in developing a new methodology for damage assessment of existing structures.
Keywords
Dynamic response; Buildings; Damage assessment; Earthquake engineering; Earthquake resistant structures; Earthquakes; Fuzzy theory; Dynamic structural analysis