Abstract
Emergency control of spatially wide-spread facilities is an important measure to prevent damage spread in earthquake disaster. This study presents a probabilistic method to realize optimum subdivision of an extended system using control devices which are potentially used in emergency so that the immediate function of the system is most reliable in an earthquake emergency. Firstly, for a linear structure with random occurrence of damage, the expected length without functional interruption has been derived in continuous and discretized form. The DP (Dynamic Programming) algorithm is then employed to find optimum allocation of arbitrary number of control devices. Some illustrative examples have been demonstrated.
