本文件提供了混凝土结构抗震评估和改造的要求。 它可用于降低地震事件中结构倒塌或翻转造成的地震损害风险。 本文件提供了详细地震评估方法的框架和原则，以及在发生严重地震前对现有钢筋混凝土结构和遭受地震袭击的结构进行的判断、抗震改造计划和设计、抗震改造执行。 这是一份总括性文件，包含一般规定，旨在为评估现有钢筋混凝土结构的地震损伤/预期损伤以及维修/改造提供广泛的选择余地。 因此，它旨在与声音工程判断结合使用。 本文件适用于根据特定国家或地区规定的结构设计标准设计的钢筋混凝土结构和预应力混凝土结构。 不适用于无钢筋混凝土和砌体结构。

This document provides requirements for seismic assessment and retrofit of concrete structures. It can be used to reduce the risk of seismic damage by structural collapse or turnover during a seismic event. This document provides the framework and principles of methods of detailed seismic assessment and the judgment, seismic retrofit plan and design, seismic retrofit execution of existing reinforced concrete structures before the occurrence of a severe earthquake and of the structures struck by an earthquake. It is an umbrella-type document with general provisions intended to provide wide latitude of choice in terms of comprehensive principle on the evaluation of the seismic damage/expected damage of existing reinforced concrete structures and repair/retrofit. Therefore, it is intended to be used in conjunction with sound engineering judgment. This document is applicable to reinforced concrete structures and pre-stressed concrete structures that have been designed on the basis of the structural design criteria set in a specific country or region. It is not applicable to unreinforced concrete and masonry structures.