重要性不同的现有结构抗震加固设计地震动参数研究

Seismic strengthening design ground motion parameters for existing buildings with different importance

提出了重要性不同的现有结构抗震加固设计基准期取值原则,给出了现有结构抗震加固设防水准的定义。基于地震危险性特征分区,利用地震动参数的危险性曲线公式对重要性不同的现有结构抗震加固设计地震动参数进行了分析。同时,为了便于工程设计人员使用,给出了现有结构设计地震动参数取值的简化方法。最后,通过算例解释了理论方法和简化计算方法中抗震加固设计地震动参数的取值方法和步骤。

Sampling principle of seismic strengthening design reference periods for existing buildings with different importance is presented. The conception of three design levels is given. The seismic strengthening design ground motion parameters for existing buildings with different importance are researched in detail by use of hazard curve formulas of seismic ground motion parameters based on seismic hazard characteristic zone. In order to help the designers use this mefhod easily, the simplified method is put forward. At last, the method and calculation step is explained by a calculation example.