Evaluation of Existing Buildings Strengthened by Steel Bracing

这是洛马普里埃塔地震(1989年10月)后的一次调查项目，目的是从这一破坏性事件中吸取教训。这个项目解决了一个具体的问题--钢支撑在加固现有建筑物方面的有效性。将选择用钢支撑加固的建筑物，以研究目前使用的理念和设计程序的有效性。将制定改进的方法，通过使用钢支撑系统来加固现有建筑物，以提高它们在未来更大强度的“设计水平”地震中的安全性。这项研究得到的信息将有助于制定评估和加固现有建筑物的规范要求。

This is a post Loma Prieta earthquake (Oct. 1989) investigation project in learning from this damaging event. This project addresses one specific problem - the effectiveness of steel bracing in strengthening existing buildings. Buildings strengthened with steel bracing will be selected to study the effectiveness of currently used philosophy and design procedures. Improved methods will be developed for strengthening existing buildings by using steel bracing systems to enhance their safety during future earthquakes of greater "design level" intensities. Information resulting from this study will be useful for formulation of code requirements for evaluation and strengthening of existing buildings.