Experimental and Analytical Studies of Nonlinear Structural Systems Under Earthquake Load

该项目是一个协调努力的实验工作分析， 为了应对两个主要问题：验证数学 对实际结构的能力进行建模和预测。 该项目的重点是钢结构， 件. 拟进行的实验和分析实验室研究可 可以方便地分为三个主要标题：（1）设备，（2） 框架，和（3）接头。 这些研究补充了规模实地测试 正在进行或正在计划中的现有运动地震。 设备的研究包括故障模式的调查 支持相关设备响应。 对于钢框架研究， 将使用4“x 6”振动台研究由于 框架的水平运动和竖向不平顺的影响 刚度 详细的非线性模型将被开发为选定的 结构. 对于节点研究，双轴足尺钢-弯矩连接 将进行测试并与分析预测进行比较。 研究人员都是称职的研究人员，有良好的记录。 首席研究员是该领域的领导者， 对抗震设计的实际问题有丰富的经验。 这 研究将填补目前知识库中的一些空白， 的非线性结构行为，并将导致技术， 强震作用下结构可靠性设计的改进 发抖 建议提供两年连续补助金。

This project is a coordinated effort of experimental work analysis in order to be responsive to two major problems: verification mathematical modelling and prediction of the capacity of actual structures. The emphasis of this project is placed on steel structures and components. The experimental and analytical laboratory studies to be carried out can be conveniently grouped under three main headings: (1) equipment, (2) frames, and (3) joints. These studies complement the scale field tests on existing motion earthquakes which are underway or being proposed. The study of equipment includes investigation of the failure modes supported correlation equipment response. For the steel frame study a 4' x 6' shaking table will be used to study the response due to the horizontal motion and the effects of vertical irregularity of frame stiffness. Detailed nonlinear models will be developed for selected structures. For joint study biaxial full-scale steel-moment connection tests will be conducted and compared with the analytical prediction. The investigators are all competent researchers of proven track record. The Principal Investigator is a leader in the field and is highly experienced in the practical problems of seismic-resistant design. This research will fill some of the gaps in the current knowledge base about the nonlinear structural behavior and will lead to techniques for improved reliable design of structures subjected to strong earthquake shaking. A two-year continuing grant is recommended.