논문실적
| Empirical shear stiffness of embankment dams |
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학술지명 ICOLD 2019 Symposium
저자 박동순,신동훈,조성배
발표일 2019-06-13
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Because many zoned embankment dams are located in high-seismicity areas, reliable seismic analyses have become even more important. In this study, comprehensive geophysical surveys (downhole, SASW, SBF, MASW, HWAW, and seismic reflection surveys) were conducted for 21 existing earth-cored rock-fill dams (ECRD) in Korea. A comparison between empirically derived profiles and the downhole profiles obtained for core layers in this study revealed that Sawada and Takahashi’s empirical formula overestimates the shear stiffness of the core. Based on statistical analyses of the geophysical survey data, newly developed Vs profiles for the core layer, and composite core/shell layer on the crest of cored fill dams are proposed. When there is insufficient in-situ data, the proposed empirical model can be utilized as dynamic material properties of zoned embankment dams. |
