Identification of Civil Engineered Structures

这项研究的主要目标是开发一种实用和可靠地识别工程结构分析模型的方法。该方法基于(1)初始模型、(2)实验和数据处理、(3)提取全局响应参数和估计局部特征的算法以及(4)通过迭代过程更新模型的过程之间的复杂相互关系。这个想法的新特点是根据几个实验室样本的测试结果实施循序渐进的鉴定程序。选择具有已知或受控特征的标本。在每个步骤中，都要调查和处理误差和不确定度的来源。所考虑的初始试件将由几个有裂缝的预应力或钢筋混凝土梁组成，这些梁具有不同的刚度、支承灵活性和连续性分布。

The primary objective of the research is to develop a methodology for practical and reliable identification of analytical models of engineered structures. The methodology is based on the complex interrelationship between (1) an initial model, (2) experimentation and data processing, (3) algorithms to extract global response parameters and to estimate local characteristics, and (4) procedures to update the model through an iterative process. The novel feature of the idea is to implement step-by-step identification procedures based on test results of several laboratory specimens. The specimens are selected with known or controlled characteristics. In each step the source of error and uncertainty is investigated and dealt with. Initial specimens considered will be comprised of several cracked prestressed or reinforced concrete beams with different distributions of stiffness, support flexibility, and continutity.