基于系统概念的建筑结构地震破坏机制和破坏过程的控制

本文将结构视为系统,说明了结构系统的安全储备不同于结构构件的安全储备,由此说明了结构系统抵御意外灾害能力的鲁棒性特点。随后,阐述了结构系统的＂重要性层次＂和＂功能性层次＂概念,并基于这两种＂层次性＂概念,提出了结构系统的＂可设计性＂。针对建筑结构抗震的两种破坏机制,采用系统分析方法和＂可设计性＂原理,提出了形成两种结构破坏机制的控制原理。在此基础上,针对整体型破坏机制,基于结构系统的层次性原理,给出了预期结构抗震性能,进而提出了结构地震破坏机制和破坏过程的控制原理和可行方法。

Failure Mechanism and Its Control of Building Structures Under Earthquakes Based on System Concept

By taking building structures as systems,the difference between the safety margins of a structure and that of its element is clarified and the robustness of the structure to resist unexpected disasters is discussed.The system concept is further used to introduce the concepts of importance levels and functionality levels in structural systems,then the designability of structural systems is pointed out.The local and global failure mechanisms of building structures under earthquake are summarized,and the failu...