ABSTRACT

In this research, dynamic characteristics of 46 damaged or retrofitted buildings (22 RC and 24 steel buildings) induced by Sarpol-e Zahab earthquake are determined by ambient vibration tests. The obtained results are compared with the results of proposed empirical relations between codes and literature. Furthermore, empirical relations are proposed for calculation of fundamental periods of different types of buildings. In addition, damping ratios and mode shapes of buildings are obtained and presented. In the last section, target displacements of buildings are calculated using the experimental, analytical, and empirical periods and a thorough comparison is made between them.

摘要

在这项研究中，通过环境振动试验确定了由 Sarpol-e Zahab 地震引起的 46 座受损或改造建筑（22 座钢筋混凝土和 24 座钢结构建筑）的动态特性。将获得的结果与提出的代码和文献之间的经验关系的结果进行比较。此外，还提出了计算不同类型建筑物基本周期的经验关系式。此外，还获得并呈现了建筑物的阻尼比和振型。在最后一节中，使用实验、分析和经验周期计算了建筑物的目标位移，并在它们之间进行了彻底的比较。