Ti-Ni系形状記憶合金を用いた建築構造物のスマート構造化に関する基礎的研究

概要

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Smart structure exhibits artificial functions that are learning, evolution, monitoring and repairing, self-remodeling, immunity, shape formation, and parallel distributed processing. Smart structure consists of smart materials. Shape Memory Alloy (SMA), a kind of smart materials, shows superelasticity that is shape recovery property. In this paper, a probability of an application of SMA for realizing one of artificial functions, repairing, of smart structure is discussed. SMA was applied to mortar beam as main reinforcements to be self-restoration device. Static loading tests were conducted. Specimens were mortar beams with SMA main reinforcements, and a mortar beam with steel main reinforcements for comparison. The results indicate that (1) after maximum deflection, the mortar beam with SMA can return to about one-tenth deflection compared with the maximum, (2) the range of deflection of the mortar beam with SMA is more than eight times that of the beam with steel, and (3) wide single crack can occur at the critical section due to a weaker bond force between SMA and mortar. As a result, SMA can be useful to a self-restoration device.
一般社団法人日本建築学会の論文
2004-03-20