An Experimental Investigation of the Dynamic Torsional- Translational Response of Reinforced Concrete Building Structrues

该项目有两个总体目标：(A)开发钢筋混凝土结构扭转-平移反应的基本实验数据，以检验理论和改进数值模型对于非线性行为和(B)为设计应用寻找表示问题的相对简单的方法。实验工作的结果将通过使用非线性和修改的线性模型来表示观察到的行为的目标的研究来评估。研究了动力相互作用和材料相互作用对耦合结构响应的影响。这些实验涉及一种特殊设计的样品，它可以围绕其水平和垂直轴线自由旋转。钢筋混凝土梁抵抗绕Y轴和X轴旋转的倾向。惯性力相对于垂直轴是偏心的。试件构型和相关的实验装置允许不同试件之间的质量、硬度和强度的独立变化。研究将包括8个试件的地震模拟试验，以调查地震运动类型、刚度和强度对扭转-平移组合反应的影响。该项目的目标是理论和实验的交叉点，并通过故意简单的测试设置设计，测试现有的理论，并使直接的动态建模成为可能。

This project has two overall goals: (a) to develop basic experimental data on the torsional-translational response of reinforced concrete structures in order to test the theory and improve numerical models for nonlinear behavior and (b) to seek relatively simple methods of representing the problem for design applications. Results of the experimental work will be evaluated by studies toward the goals indicated using nonlinear and modified linear models to represent observed behavior. Both dynamic interaction and material interaction affecting the coupled structural response will be investigated. The experiments involve a specially designed specimen which is free to rotate about its horizontal and vertical axes. The tendencies for rotation about Y and X are resisted by reinforced concrete beams. The inertia force is eccentric with respect to the vertical axis. The specimen configuration and the associated experimental setup permits the independent variation of mass, stiffness, and strength from specimen to specimen. Study will include earthquake-simulation testing of eight specimens to investigate the effects of type of earthquake motion, stiffness, and strength on combined torsional-translational response. The project targets at the intersection of theory and experiments, and through deliberately simple design of the test setup, tests existing theories and makes straightforward dynamic modeling possible.