Inelastic Response and Collapse of Steel Building StructuresSubjected to Multicomponent Seismic Excitations (Collaborative Research)

最近在日本、墨西哥和其他地方的经验表明，钢结构建筑可能遭受严重破坏，甚至完全倒塌。本项目研究了最近认识到的几个因素对钢框架体系抗震性能的影响。这些是：多分量地震动的相互作用，P-delta效应和低延性构件的影响。该研究利用了密苏里-罗拉大学在受相互作用地面运动影响的建筑物地震分析方面建立的分析能力，以及利哈伊大学在钢结构建筑结构方面的广泛研究经验。这种合作应该提供一个独特的机会，以提高对高层钢结构建筑抗震性能的理解，并提供更可靠的方法来评估这种结构的安全性。其结果将对实践工程师、学术研究人员和代码编写机构非常有用。

Recent experience in Japan, Mexico, and elsewhere shows that substantial damage, even total collapse, can occur to steel buildings. This project studies the effects of several recently recognized factors on the seismic performance of steel frame systems. These are: interaction of multicomponent ground motions, P-delta effect, and the effect of low ductility members. The study makes use of the established analytical capabilities in seismic analysis of buildings subjected to interacting ground motions at the University of Missouri-Rolla, and the extensive research experience in steel building structures at Lehigh University. The collaboration should provide a unique opportunity to develop an improved understanding of the seismic performance of tall steel buildings and more reliable methods of evaluating safety of such structures. The results would be useful for practicing engineers, academic researchers, and code writing bodies.