Development of a Data Base for the Response Characteristics of Selected Mexico City Buildings Under Ambient Excitations

该项目的目的是验证墨西哥城典型建筑的动态特性，并测量这些建筑的阻尼特性。选择了一座钢建筑和四座钢筋混凝土建筑，并使用地震仪和模拟数据记录器监测其环境响应。这些环境数据的模拟测量被统一处理和分析光谱特性和模态特性。进一步，将分析结果与实验结果进行关联，以确定良好的设计特征、关键元件的应力分布、扭转效应、面内柔度效应以及观察到的损伤与应力强度之间的关系。

The objective of this project is to validate the present dynamic characteristics of typical Mexico City buildings and to measure the damping characteristics of these buildings. One steel and four reinforced concrete buildings are chosen and their ambient responses are monitored using seismometers and analog data recorders. These analog measurements of ambient data are uniformly processed and analyzed for spectral characteristics and modal properties. Further, correlation of analytical and experimental results is made to identify good design features, stress distribution in critical elements, torsional effects, effects of in-plane flexibility, and relationship between observed damage and stress intensity.