TY - JOUR ID - 240457 TI - Measurement and Computation of Dynamic Response of Arch Dams Including Interaction Effects JO - Journal of Seismology and Earthquake Engineering JA - JSEE LA - en SN - 1735-1669 AU - Ghanaat, Yusof AU - Hall, Robert L. AU - Redpath, Bruce B. AD - QUEST Structures AD - AD - Redpath Geophysics Y1 - 2000 PY - 2000 VL - 2 IS - 3 SP - 41 EP - 54 KW - Arch Dam KW - Dam-water-foundation Interaction KW - Accelerations KW - Hydrodynamic Pressures KW - Spectrogram KW - Reflection Coefficient KW - Absorption coefficient KW - Acoustic Reverberation KW - Explosives KW - Blast-generated Motions KW - field measurements DO - N2 - A computation and experimental study of dam-water-foundation interaction conducted at Longyangxia Dam in China is described. In the primary tests, the dam and its retained water were excited by detonating large explosive charges in shallow water upstream from the dam. The dam and water responses to the explosives were recorded by accelerometers, pressure sensors, and three-component seismographs. In secondary tests, the average reflection coefficient of the reservoir boundaries was measured using a newly developed procedure based on the acoustic reverberation concept. The results obtained indicate that explosive detonations appear to be the best means for exciting the dam-water-foundation system, and that an acoustic reverberation technique offers a practical procedure for measuring the overall reflection coefficient for the entire reservoir. Dam displacement and acceleration responses and hydrodynamic pressures due to acceleration signals recorded at the base of the dam were computed using current analytical procedures. Generally, reasonable agreement between the measured and computed responses was obtained but the prediction could be improved if non-uniform input motion could be defined and used. UR - http://www.jsee.ir/article_240457.html L1 - http://www.jsee.ir/article_240457_b0c21795ffd07d68859b2f4fda511ff6.pdf ER -