从欧洲抗震设计规范的一般规定浅谈结构抗震概念设计的重要性

A brief discussion on importance of seismic concept design of structures based on general rules of Eurocode 8

由于地震的作用以及在这种作用下的结构与构件的受力状况的复杂性和不确定性,结构抗震设计的计算假定与实际情况存在各种差异,甚至有时还根本无法计算。因此在这种情况下,为确保抗震结构性能,就不得不依赖结构抗震的概念设计。结构抗震概念设计是指工程师们根据结构地震破坏的形态和长期积累的实际工程经验等总结形成的符合工程师专业知识的基本设计原则和设计思想。本文简述了欧洲抗震设计规范EC8中关于结构抗震概念设计的基本原则和一般规定,探讨了结构抗震概念设计的目的及其在工程应用中的重要性,指出目前我国还没有一套全面系统的结构抗震概念设计理论。为切实地做好结构抗震设计工作,确保结构的安全耐久性,结构抗震概念设计理论的研究将是一项非常重要而有意义的工作。

Due to the complexity uncertainty of the load bearing of structure elements under the seismic action,various differences exist between the assumptions of seismic design and actual conditions,sometimes even unable to compute.To ensure the seismic reliability of structures,the key point is to perform the seismic concept design.The seismic concept design of structures is the basic principle and design idea in accordance with the professional knowledge of engineers acquired from the seismic structural damage and engineering practice experience.In this paper,the basic principle and general guiding rules on seismic concept design of Eurocode 8 are briefly introduced,and the purpose of seismic concept design and the importance of its application to engineering practice are discussed.Finally,it is indicated that a series of comprehensive and systematic theories on seismic concept design of structures does not exist in China presently.To carefully perform the seismic design of structures and ensure their safety and durability,the research on seismic concept design of structures will be more and more important.