建筑结构连续倒塌性能研究进展1）

摘要

在爆炸、撞击等偶然载荷作用下，建筑结构中部分关键承重构件失效可能导致后果极为严重的结构整体连续倒塌破坏。本文对国内外建筑结构连续倒塌性能的试验研究和理论分析成果进行了总结，分析了结构倒塌过程中的各种抵抗机制及其对结构抗倒塌性能的贡献，对现有的结构抗连续倒塌设计与研究方法进行了评述，并对结构抗倒塌性能的研究进行了展望。%The failure of some critical bearing members in building structures caused by accidental loads such as explosion and impact could trigger a devastating progressive collapse of the global structures. This paper reviews the experimental and theoretical research results on the progressive collapse of building structures, and the resistance mechanisms during the collapse as well as the their contributions to the collapse resistance. The current design and assessment methods are discussed. Finally, the prospective research directions on the structural collapse are highlighted.