大型公共建筑非结构构件韧性恢复机理与提升技术

大型公共建筑既是保障震后救灾及城市系统功能恢复的基础设施系统，又是地震灾害的重要承灾体，地震一旦发生，大型公共建筑中非结构构件会造成严重的地震灾害。地震灾害脆弱性已成为现阶段制约重大城市基础设施建设的核心问题。因此，深入揭示大型公共建筑非结构构件的地震致灾机理，发展地震灾害控制和预防技术，提升非结构构件地震韧性，已成为地震工程领域研究的热点与难点。本项目创新性地将大型公共建筑主体结构与非结构构件相结合，将大型公共建筑主附耦合系统物理损伤与功能损失相结合，将隔震减振技术与韧性评估方法相结合，采用理论分析、数值模拟和试验研究等多种手段，揭示大型公共建筑在复杂工程环境下的强地震动破坏性特征，提出大型公共建筑隔震减振体系及非结构构件韧性提升技术，阐明其大型公共建筑主附耦合系统韧性恢复机理及地震易损性，建立大型公共建筑抗震韧性评估方法，以期为大型公共建筑的安全运行提供理论支撑和技术保障。

Large public buildings are not only an infrastructure system to guarantee post-earthquake disaster relief and urban system functional recovery, but also an important hazard bearing body for earthquake disasters. Once an earthquake occurs, it will cause a serious earthquake disaster of the nonstructural components in the large public buildings. Earthquake disaster fragility has become the core problem that restricts the construction of major urban infrastructure. Therefore, in the field of seismic engineering, it has become the hot and difficult points to reveal the earthquake disaster mechanism of the nonstructural components deeply in the large public buildings, develop the control and prevention technology of earthquake disaster, and enhance their seismic resilience. This project innovatively combines the main structures with nonstructural components of large public buildings, combines the physical damage with the functional loss of main-secondary coupling systems in large public structures, and combines the technology of seismic isolation and vibration reduction with the method of resilience evaluation. Based on the theoretical analysis, numerical simulation and experimental research, the seismic damage characteristics of the large public buildings are revealed under complex engineering environments, the seismic isolation and vibration reduction system of large public structures and resilience performance improvements of nonstructural component are proposed, their resilience recovery mechanism and seismic fragility are elucidated and the seismic resilience evaluation method for large public buildings is established. All of this will provide the theoretical support and technical guarantee for the safe operation of large public buildings.