地震工程:从抗震、减隔震到可恢复性
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摘要
近年我国地震工程研究的发展呈现从抗震、减隔震走向可恢复功能的趋势。地震可恢复功能可定义为:受到地震动输入扰动后,结构、系统、城市具有可恢复功能的能力。对于工程结构而言,地震可恢复功能结构不仅要求结构在地震作用下保护生命,而且要求结构在震后快速恢复,减少对正常使用的影响。该文首先介绍了地震可恢复功能的基本概念,围绕地震可恢复功能结构,从设防目标、规范标准、结构体系、设计方法、性能指标以及工程应用等方面阐述了可恢复功能结构的特点及其与传统抗震结构的区别,最后对可恢复功能结构的未来进行了展望。
In recent years, the research on earthquake engineering in our country showed a tendency of development from earthquake resistance, energy dissipation, and isolation to resilience. Earthquake resilience can be defined as the capability of restoring the function for a structure, a system or a city after it has been interrupted by an earthquake event. In respect of structures, an earthquake resilient structure should not only protect life safety during a seismic event, but also restore its function quickly enough after the earthquake in order to minimize the influence to immediate occupancy. The fundamental concepts of earthquake resilience are introduced first. After that, the characteristics of an earthquake resilient structure and its uniqueness compared to a conventional structure are addressed over the aspects of seismic fortification objective, design code and standard, structural systems, design methods, performance indexes and project applications. Lastly, the direction of future development for earthquake resilient structures is forecasted.
In recent years, the research on earthquake engineering in our country showed a tendency of development from earthquake resistance, energy dissipation, and isolation to resilience. Earthquake resilience can be defined as the capability of restoring the function for a structure, a system or a city after it has been interrupted by an earthquake event. In respect of structures, an earthquake resilient structure should not only protect life safety during a seismic event, but also restore its function quickly enough after the earthquake in order to minimize the influence to immediate occupancy. The fundamental concepts of earthquake resilience are introduced first. After that, the characteristics of an earthquake resilient structure and its uniqueness compared to a conventional structure are addressed over the aspects of seismic fortification objective, design code and standard, structural systems, design methods, performance indexes and project applications. Lastly, the direction of future development for earthquake resilient structures is forecasted.
引文
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该文在第27届结构工程学术会议(2018西安)应邀作特邀报告
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