(北京市建筑设计研究院  100045)

［提要］考虑意外事件不致引发房屋非比例破坏，结构不仅应具有足够的承载力、延性，还应有一定的坚固性。对结构的破坏形式和结构的坚固性表现形式作了介绍，对其要求进行了探讨，并从结构体系、构件的受力性能等方面提出了钢筋混凝土房屋防连续倒塌的若干设计概念。

［关键词］  结构坚固性  非比例破坏  连续倒塌

Structural Robustness and Design Conception Regarding Prevention of Psogressive Collapse of RC Building/Hu Qingchang (Beijing Institute of Architectural Design, Beijing 100045, China)

Abstract: Considering accidental loads due to extreme events, structure should not only possess enough strength and ductility but also robustness. The robustness and its requirement are discussed. Finally, conception regarding prevention of progressive collapse of RC structure is introduced.

Keywords: structural robustness; disproportionate collapse; progressive collapse