形状记忆合金智能混凝土结构研究进展
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摘要
形状记忆合金作为一种智能材料,不仅在机械电子、生物医疗、航空航天领域得到了越来越多的应用,而且在土木工程的研究与应用方兴未艾。目前,形状记忆合金在土木工程领域的研究主要集中在混凝土梁的自检测、自修复,混凝土柱的抗震与加固处理,混凝土结构的阻尼抗震等方向。本文简述了形状记忆合金的发展过程及主要特性;分别介绍了利用形状记忆合金的形状记忆效应特性和超弹性特性制成的形状记忆合金智能混凝土构件或结构的研究与应用进展;指出了影响形状记忆合金智能混凝土结构发展的因素及今后的发展方向。
Shape memory alloys as a smart material,not only have been used in machinery and electronics,bio-medical and aerospace more and more widely,but also are just unfolding in civil engineering research and application.At present,the study of shape memory alloy in civil engineering mainly in self-monitoring and self-repairing of concrete beams,earthquake resistance and reinforcement of concrete columns,and seismic damping of concrete structures etc.The development of shape memory alloy and its main features are outlined in this paper.And the research progress of the shape memory effect and superelasticity of shape memory alloys in smart concrete application are introduced.Furthermore,the development of the form of materials and self-repairing structure in application of shape memory alloys are pointed out,and the factors which affect the development of smart concrete structure are showed.
引文
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