Abstract
Determination of site fundamental periods is remarkably important to classify soil deposits and to identify the resonant probability of any structures during an earthquake. Recent developments in the literature exposed that the fundamental period is a better proxy than time-averaged velocity to 30 m (VS30 ) or the best complementary parameter to VS30 to evaluate the soil characteristics. Because great efforts have been paid to achieve VS30 maps of many regions and countries, an approximate methodology based on this parameter and engineering bedrock depth (Zbr ), in which the shear-wave velocity reaches 760 m/s (Z0:76 ) or 1000 m/s (Z1:0 ), is presented here to find out the site fundamental periods. The methodology is developed and verified using the Kiban Kyoshin network database. Outcomes of the proposed methodology are also compared with some of the literature equations and methods. The comparative studies resulted in a great correlation with a relatively low standard deviation. Therefore, it is conceivable to apply the proposed methodology easily to the regions where VS30 and engineering bedrock depth are already known.
| Original language | English |
|---|---|
| Pages (from-to) | 2606-2620 |
| Number of pages | 15 |
| Journal | Bulletin of the Seismological Society of America |
| Volume | 112 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Oct 2022 |
Bibliographical note
Publisher Copyright:© Seismological Society of America.
Funding
The authors appreciate the National Research Institute for Earth Science and Disaster Prevention (NIED) of Japan for making the Kiban Kyoshin network (KiK-net) database publicly available. In addition, the authors are grateful to Su-Yang Wang and Chuanbin Zhu for sharing their research findings. The constructive comments of the esteemed editor Hiroshi Kawase and the anonymous reviewers are also acknowledged gratefully.
| Funders | Funder number |
|---|---|
| National Research Institute for Earth Science and Disaster Prevention |