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Unformatted text preview: CE 728 Geotechnical Earthquake Engineering Solution for Assignment # 1 By : Özgür Kuruoğlu 1. a) The summary of the selected main shock strong ground motion records after the August 17, 1999 İzmit Earthquake (Mw=7.4) are noted on Table 1. The maximum horizontal ground accelerations at the same strong ground motion stations, that are predicted using the Abrahamson & Silva (1996), Boore et al. (1994), and Idriss (1994) attenuation relationships are shown on Table 2. (See Appendix 1) The distance to the rupture plane of the strong ground motion stations are measured from Figure 1, which shows the surface projection of the approximate zone of energy release as a result of the August 17, 1999 İzmit Earthquake (Mw=7.4). Table 1. Summary of selected main shock strong motion records. The locations of the recording stations are shown in Figure 1. Station Station Coordinates Distance to rupture plane (km) Site Class Peak Horizontal Acceleration (g) Strong Comp. Weak Comp. Sakarya (SKR)* 40.737 ° N 30.384 ° E 3.2 Stiff Soil 0.407 (E) N/A (S) Yarimca (YPT)* 40.763 ° N 29.761 ° E 4.8 Soft Soil 0.298 (N) 0.262 (E) Izmit (IZT) 40.790 ° N 29.960 ° E 9.6 Rock 0.226 (E) 0.169 (S) Duzce (DZC) 40.850 ° N 31.170 ° E 14.4 Soft Soil 0.368 (W) 0.322 (S) Table 2. Prediction of the maximum horizontal ground acceleration at the strong ground...
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- Fall '06
- Futurology, attenuation relationships, 1999 İzmit earthquake