Shear Behavior of Reinforced and Prestressed Concrete

受剪切和扭转作用的钢筋和预应力混凝土结构目前采用经验或半经验方法设计。目前还没有令人满意的理论来预测结构的抗剪强度和行为，如剪力墙和核密封容器在地震或风的作用下。本研究的主要目的是建立一个考虑混凝土的贡献、裂缝的本构规律和混凝土在结构中的软化作用的通用桁架模型理论。为了建立一般桁架模型理论所需的参数，至少需要测试50块抗剪板。每块面板的尺寸为250 x 250 x 12.7厘米。（98 x 98 x 5英寸）由于美国没有适当的设施，测试将在研究合作的基础上在日本鹿岛建筑技术研究所进行。

Reinforced and prestressed concrete structures subjected to shear and torsion are currently being designed by empirical or semi-empirical methods. No satisfactory theory has yet been developed to predict the shear strength and behavior of structures, such as shear walls and nuclear containment vessels under earthquake or wind motion. The main purpose of this research is to develop a general truss model theory which can take into account the contribution of concrete, the constitutive law of cracks, and the softening effect of concrete in structures. To establish the parameters required in the general truss model theory, a minimum of 50 shear panels will have to be tested. Each of the panels will be 250 x 250 x 12.7 cm. (98 x 98 x 5 in.) Since no suitable facilities are available in the United States, the tests will be carried out at the Kajima Institute of Construction Technology in Japan on the basis of research cooperation.