Applicable conditions of the near-field site response of a large velocity pulse by equivalent linearization method

作者：CHEN Xueliang; JIN Xing; GAO Mengtan

来源：哈尔滨工程大学学报, 2015, (8).

DOI：10.3969/j.issn.1006-7043.201406079

• equivalent linearization
• one-way large velocity pulse
• two-way large velocity pulse
• permanent dis-placement
• applicable conditions
• site response

In order to explore the feasibility of equivalent linearization method, this paper takes the near?field strong ground motion with typical characteristics, specifically, one?way large velocity pulses with a large permanent dis?placement, and two?way large velocity pulses with no permanent displacement, as input, the applicable conditions of using equivalent linearization method to analyze the near?field site response of large velocity pulse are calculated and analyzed by self?examination method and qualitative comparison method of previous results. The results show that:for the weak and moderate two?way large velocity pulse?type near?field ground motions, the equivalent linear?ization method is reasonable and effective. However, the equivalent linearization method is not appropriate for one?way large velocity pulse?type near?field ground motion, the calculation result will have large error. In particular, it does not reflect permanent displacement and plastic deformation characteristics of site.

• 单位
  中国地震局工程力学研究所; 北京; 中国地震局地球物理研究所