The advents of large and various kinds of concrete structures in the recent years are owing much to the remarkable development of structure analysis as well as to the continuing studies done on the materials and on the construction technology. However, the concrete structures are in general composed of two materials, that is, concrete and steel, and therefore have the peculiar problems quite different from those involved in the steel structures. In addition, the complexity of physical and mechanical properties of concrete itself makes the theoretical analysis of behaviors of concrete structures more complicated and more difficult. This paper describes the state-of-art of studies on structure analysis, testing, design philosophy and material properties, all related to concrete structures, and iutroduces briefly some of the modern structures and the problems to be solved in relation to their future development.
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