基于NGA-BSSA13地震动衰减模型的主余震序列构造方法

Construction Method of Mainshock and Aftershock Sequence Based on NGA-BSSA13 Seismic Ground Motion Attenuation Model

地震的发生都伴随着主震、余震或震群的地震序列,因此考虑主余震序列地震动能够更加合理地反映工程的抗震能力。参照已有的相关研究成果,考虑震级、震距、发震机制、发震构造类型、局部场地条件、盆地效应、上盘效应等各类影响因素,基于NGA-WEST2-BSSA13地震动衰减模型,建立了主余震序列地震动参数构造方法。

The occurrence of earthquake is accompanied by the earthquake sequence of mainshock, aftershock or earthquake swarm. Therefore, it is more reasonable to consider the ground motion of mainshock and aflershoek sequence for reflecting the seismic capacity of project. Based on existing research results and considering seismic magnitude, seismic distance, seismic mechanism, seismic tectonics type, local site conditions, basin effect and hanging wall effect, the ground motion attenuation determination method of mainshock and aftershoek sequence is established based on NGA-WEST2-BSSA13 ground motion attenuation model.