摘要
Site effect analysis has been applied to investigate soil classification, alluvium depth, and fracture detection, although the majority of previous studies have typically focused only on the response of large-scale single structures. In contrast, we investigated the site effect for small-scale cracks using a case study in southern Taiwan to provide a means of monitoring slope stability or foundation integrity in situ using only an accelerometer. We adopted both the reference site and horizontal-to-vertical spectral ratio methods. We obtained seismographs associated with the typhoon-related development of a crack set (52 m long, 5 m deep) in a steep slope and compared the resonance frequency between two conditions (with and without cracks). Moreover, we divided the seismic waves into P, S, and coda waves and examined the seismic source effect. Our results demonstrate that frequencies of 14.5-17.5 Hz are most sensitive to these cracks, particularly for the E-W component of the P-waves, which coincides with the crack's strike. Peak ground acceleration, which is controlled by seismic moment and attenuated distance, is another important factor determining the resonance results. Our results demonstrate that the ratio of temporal seismic waves can be used to detect the existence of nearby subsurface cracks.
| 原文 | English |
|---|---|
| 文章編號 | 055002 |
| 期刊 | Journal of Geophysics and Engineering |
| 卷 | 11 |
| 發行號 | 5 |
| DOIs | |
| 出版狀態 | Published - 2014 十月 1 |
指紋
All Science Journal Classification (ASJC) codes
- Geophysics
- Geology
- Industrial and Manufacturing Engineering
- Management, Monitoring, Policy and Law
引用此文
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Site response variation due to the existence of near-field cracks based on strong motion records in the Shi-Wen river valley, southern Taiwan. / Wu, Chi Shin; Yu, Teng To; Peng, Wen Fei; Yeh, Yeoin Tein; Lin, Sih Siao.
於: Journal of Geophysics and Engineering, 卷 11, 編號 5, 055002, 01.10.2014.研究成果: Article
TY - JOUR
T1 - Site response variation due to the existence of near-field cracks based on strong motion records in the Shi-Wen river valley, southern Taiwan
AU - Wu, Chi Shin
AU - Yu, Teng To
AU - Peng, Wen Fei
AU - Yeh, Yeoin Tein
AU - Lin, Sih Siao
PY - 2014/10/1
Y1 - 2014/10/1
N2 - Site effect analysis has been applied to investigate soil classification, alluvium depth, and fracture detection, although the majority of previous studies have typically focused only on the response of large-scale single structures. In contrast, we investigated the site effect for small-scale cracks using a case study in southern Taiwan to provide a means of monitoring slope stability or foundation integrity in situ using only an accelerometer. We adopted both the reference site and horizontal-to-vertical spectral ratio methods. We obtained seismographs associated with the typhoon-related development of a crack set (52 m long, 5 m deep) in a steep slope and compared the resonance frequency between two conditions (with and without cracks). Moreover, we divided the seismic waves into P, S, and coda waves and examined the seismic source effect. Our results demonstrate that frequencies of 14.5-17.5 Hz are most sensitive to these cracks, particularly for the E-W component of the P-waves, which coincides with the crack's strike. Peak ground acceleration, which is controlled by seismic moment and attenuated distance, is another important factor determining the resonance results. Our results demonstrate that the ratio of temporal seismic waves can be used to detect the existence of nearby subsurface cracks.
AB - Site effect analysis has been applied to investigate soil classification, alluvium depth, and fracture detection, although the majority of previous studies have typically focused only on the response of large-scale single structures. In contrast, we investigated the site effect for small-scale cracks using a case study in southern Taiwan to provide a means of monitoring slope stability or foundation integrity in situ using only an accelerometer. We adopted both the reference site and horizontal-to-vertical spectral ratio methods. We obtained seismographs associated with the typhoon-related development of a crack set (52 m long, 5 m deep) in a steep slope and compared the resonance frequency between two conditions (with and without cracks). Moreover, we divided the seismic waves into P, S, and coda waves and examined the seismic source effect. Our results demonstrate that frequencies of 14.5-17.5 Hz are most sensitive to these cracks, particularly for the E-W component of the P-waves, which coincides with the crack's strike. Peak ground acceleration, which is controlled by seismic moment and attenuated distance, is another important factor determining the resonance results. Our results demonstrate that the ratio of temporal seismic waves can be used to detect the existence of nearby subsurface cracks.
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U2 - 10.1088/1742-2132/11/5/055002
DO - 10.1088/1742-2132/11/5/055002
M3 - Article
AN - SCOPUS:84907654916
VL - 11
JO - Journal of Geophysics and Engineering
JF - Journal of Geophysics and Engineering
SN - 1742-2132
IS - 5
M1 - 055002
ER -