AN EVALUATION OF SURGU-DAM RESPONSE DURING 5 MAY 1986 EARTHQUAKE

Surgu Dam, located in southeast Turkey was subjected to longitudinal c racks on the dam crest and simultaneous settlement on the upstream par t of the day, during 5 May 1986 Malatya Earthquake. In the following, a brief account of the 5 May 1986 earthquake and the damage occurred i n the dam is reviewed, and the results of a dynamic finite element ana lysis incorporating the non-linear soil properties are presented. It i s observed that, a Newmark type permanent displacement analysis carrie d out under simulated earthquake motions agree well with the actual me asurements made immediately after the earthquake. The Fourier amplitud e spectrum of the transient motions recorded on the dam crest is also in good agreement with that of the computed spectra under the low-ampl itude synthetic white-noise type base excitations.