Dynamic Response of Precast Concrete Frames (PRESSS)

9307666艾布拉姆斯该项目将调查使用现有的分析模型来确定具有延性连接的预制混凝土框架系统的非线性动态响应。 将通过将计算响应与三个缩比结构的测量响应相关联来验证PRESSS程序中先前开发的计算模型。 将使用从全尺寸PRESSS实验中获得的框架连接细节构建每个缩小比例框架系统。 测试结构将受到一系列轻，中度和强烈的模拟地震运动使用伊利诺伊州振动台。 将根据一系列补充的拟定静态试验结果，对缩小比例框架连接的滞后关系进行表征，以输入计算模型。 除了验证数值模型外，还将使用物理模型的动态响应来建议计算动态响应的简化分析程序。 然后将这些简化程序的结果与用更复杂的模型计算的响应相关联，以进行验证。 此外，使用简化模型计算的响应将与实际预制框架建筑物在地震下的实测动态响应相关。 一旦开发，简化的分析方法将被用来检查系统响应的各种框架系统在不同的美国地震带具有不同的网站特性。 本研究将 h）的 0* 0*0 完成的目的是外推大规模构件测试数据，以设计全国范围内的框架结构系统。***

9307666 Abrams The project will investigate the use of existing analytical models for determining nonlinear dynamic response of precast concrete frame systems with ductile connections. Computational models developed previously within the PRESSS program will be verified by correlating computed response with measured response of three reduced scale structures. Each of the reduced scale frame systems will be constructed using frame connection details derived from full scale PRESSS experiments. Test structures will be subjected to an array of light, moderate and strong simulated earthquake motions using the Illinois shaking table. Hysteresis relations for reduced scale frame connections will be characterized for input to computational models based on results of a supplemental series of proposed static tests. In addition to verifying numerical models, dynamic response of the physical models will be used to suggest simplified analytical procedures for calculating dynamic response. Results of these simplified procedures will then be correlated with response computed with more complex models for verification. In addition, response computed using simplified models will be correlated with measured dynamic response of an actual precast frame building subjected to an earthquake. Once developed, the simplified analytical methods will be used to examine system response for various frame systems in different U.S. seismic zones with different site characteristics. This study will be h) 0*0*0* done with the purpose of extrapolating large scale component test data to design of frame structural systems across the nation. ***