防灾减灾工程学报2018，Vol.38Issue(1)：193-202,10.DOI:10.13409/j.cnki.jdpme.2018.01.026
多断层破裂下单双峰地震动参数对比分析
Contrastive Analysis of Single-and Double-plateau Ground Motion Parameters under Multi-fault Rupture
摘要
Abstract
The multi-fault rupture of large earthquake will lead to changes in the shape of the ground motion time history and more severe damage.In order to reveal the influence of multi fault rupture on the ground motion characteristics,the attenuation relationships of the peak,the duration and the response spectrum of single and double-plateau ground motions were deduced based on the 5 · 12 Wenchuan earthquake records.The differences between the single-and double-plateau ground motion parameters were compared.The results show that the peak,duration and response spectrum of the double-plateau ground motion caused by the multi-fault rupture are larger than those of the single-plateau ground motion.The changes of the single-and double-plateau ground motion parameters are the same with the increase of the fault distance,while the change rates are inconsistent.The change rates of the peak acceleration and energy duration of the double-plateau ground motion with the changing fault distance are higher than those of the single-plateau ground motion.The change rates of the peak velocity,absolute duration and accel eration response spectrum of the double plateau ground motion with the changing fault distance are lower than those of the single plateau ground motion.关键词
多断层破裂模式/5·12汶川地震记录/单峰/双峰/地震动参数/衰减规律Key words
multi fault rupture mode/5 · 12 Wenchuan earthquake records/single-plateau/double-plateau/ground motion parameters/attenuation relation分类
天文与地球科学引用本文复制引用
钟菊芳,吴海波..多断层破裂下单双峰地震动参数对比分析[J].防灾减灾工程学报,2018,38(1):193-202,10.基金项目
国家自然科学基金项目(51468045)、水利公益性行业科研专项项目(201401009)、江西省教育厅科技项目(GJJ160703)资助 （51468045）
