利用新近补充的美国西部地区宽频带速度基岩记录，对水平向基岩5%阻尼比地震动反应谱衰减关系的长周期段（T=3~10 s）进行了重新拟合，并将其与短周期反应谱衰减关系（T=0.04~6.00 s）在周期2.0 s附近进行对接。基于新得到的长周期范围0.04~10.00 s的衰减模型，对离散标准差、远场区域归一化反应谱特性等进行了分析。新得到的衰减关系使用的技术方法和强震数据集等与GB 18306—2015《中国地震动参数区划图》项目编图采用的相一致，适用范围为Ms5.0~8.0，震中距0~500 km。
Abstract
Based on the newly supplemented broadband velocity response records of bedrock in the western United States, the long period (T=3-10 s) part of 5% damping ratio seismic response spectrum attenuation relationship of horizontal bedrock was re-fitted, and it was connected with the short period (T=0.04-6.00 s) part near the period of 2.0 s. Based on the new obtained attenuation model in the long period range of 0.04-10.00 s, discrete standard deviation and far-field normalized response spectrum characteristics were analyzed. The technical method and strong earthquake data set used in the new obtained attenuation relationship were consistent to those used in the seismic parameter zonation map of China (GB 18306—2015) with the applicable range of Ms5.0-8.0 and the epicentral distance of 0-500 km.
关键词
强地面运动 /
衰减关系 /
水平向地震动 /
长周期反应谱
{{custom_keyword}} /
Key words
strong ground motion /
attenuation relationship /
horizontal ground motion /
long period response spectrum
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
［1］ABRAHAMSON N, SILVA W, KAMAI R. Summary of ASK14 ground-motion relation for active crustal regions［J］. Earthquake Spectra, 2014, 30:1025-1055.
［2］BOORE D M, STEWART J P, ATKINSON G M. NGA-West 2 equations for predicting PGA, PGV and 5%-damped PSA for shallow crustal earthquakes［J］. Earthquake Spectra, 2014, 30:1057-1085.
［3］CAMPBELL W K, BOZORGNIA Y. NGA-West 2 ground motion model for the average horizontal components for PGA, PGV and 5%-damped linear acceleration response spectra［J］. Earthquake Spectra, 2014, 30:1087-1115.
［4］CHIOU S J, YOUNGS R. Update of the chiou and youngs NGA model for the average horizontal component of peak ground motion and response spectra［J］. Earthquake Spectra, 2014, 30:1117-1153.
［5］IDRISS M. An NGA-West 2 empirical model for estimating the horizontal spectral values generated by shallow crustal earthquakes［J］. Earthquake Spectra, 2014, 30:1155-1177.
［6］IBRAHIM R, SI H J, KOKETSU K, et al. Long-period ground-motion prediction equations for moment magnitude estimation of large earthquakes in Japan［J］. Bulletin of the Seismological Society of America, 2016, 106(1):54-72.
［7］霍俊荣.近场强地面运动衰减规律的研究［D］.北京：中国地震局，1989.
［8］俞言祥.长周期地震动衰减关系研究［D］.北京：中国地震局，2002.
［9］俞言祥，汪素云.中国东部和西部地区水平向基岩加速度反应谱衰减关系［J］.震灾防御技术，2006，1（3）：207-217.
YU Yanxiang, WANG Suyun. Attenuation relations for horizontal peak ground acceleration and response spectrum in eastern and western China［J］. Technology for Earthquake Disaster Prevention, 2006, 1(3):207-217.
［10］靳超宇，廖旭，黄河，等.基于美国NGA项目的长周期地震动衰减关系研究［J］.东北地震研究，2009，25（1）：70-75.
JIN Chaoyu, LIAO Xu, HUANG He, et al. Study on the attenuation relationships of long period ground motions based on NGA［J］. Seismological Research of Northeast China, 2009, 25(1):70-75.
［11］韩小雷，尤涛，季静.加速度反应谱长周期段下降规律研究［J］.振动与冲击，2018，37（9）：86-105.
HAN Xiaolei, YOU Tao, JI Jing. Descending law in long-period range for an acceleration response spectrum［J］. Journal of Vibration and Shock, 2018, 37(9):86-105.
［12］肖亮.水平向基岩强地面运动参数衰减关系研究［D］.北京：中国地震局，2011.
［13］俞言祥，李山友，肖亮.为新区划图编制所建立的地震动衰减关系［J］.震灾防御技术，2013，8（1）：24-33.
YU Yanxiang, LI Shanyou, XIAO Liang. Development of ground motin attenuation relations for the new seismic hazard map of China［J］. Technology for Earthquake Disaster Prevention, 2013, 8(1):24-33.
［14］陈培善，陈海通.由二维破裂模式导出的地震定标律［J］.地震学报，1989，11（4）：337-350.
CHEN Peishan, CHEN Haitong. Scaling law from two-dimensional faulting model［J］. Acta Seism Sinica, 1989, 11(4):337-350.
［15］地震震级的规定:GB 17740—2017［S］.北京：中国标准出版社，2017.
［16］肖亮，俞言祥.一种新的拟合地震动衰减关系的分步回归法［J］.地震学报，2010，32(6)：725-732.
XIAO Liang, YU Yanxiang. A new step-regression approach for fitting ground motion data with attenuation relation［J］. Acta Seism Sinica, 2010, 32(6):725-732.
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
PDF(2164 KB)
