炭素繊維束センサの開発と性能評価 : 杭の健全性モニタリング手法の開発(その1)

概要

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Various reports on damage to pile foundation of buildings due to 1995 Hyogoken-Nambu earthquake indicate the need to develop techniques for quick and accurate assessment of damage to piles following major earthquakes. In this paper, the monitoring sensor using the carbon fiber enclosed between glass fiber reinforced plastics is proposed. First, the performance requirements in monitoring the integrity of piles are discussed, and the applicability using the carbon fiber is confirmed comparing with other sensors. The proposed sensor has many advantages, for examples, a small section, a long-length, a good durability, an easy inspection using an electric resistance tester, etc. And also, the mechanical properties both of a carbon fiber and the sensor are investigated through the several type tension tests. As the result, the proposed sensor has the applicability in monitoring the integrity of structural elements, in which the discrimination is determined as the elongation percentage of the fiber, and the maximum strain is memorized referring to the residual electric resistance.
社団法人日本建築学会の論文
2002-07-30