| 摘要 |
PROBLEM TO BE SOLVED: To monitor a situation of a structure in a disaster site difficult to aprroach, in a remote area not damaged by the disaster. SOLUTION: In this remote monitoring system, limit displacement sensors 20,... for sensing that relative displacement amounts of bridge girders 11 neighboring each other reach to a prescribed amount when it comes about are provided in joint portions of the respective bridge girders 11,... of a bridge 10, the respective sensors 20,... are connected to a relay center 40 via communication cables 30, and the relay center 40 is connected with a monitor 50 in a remote area via a communication network 60.
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