The Earthquake Engineering Online Archive - (Nisee e-library)

Three-dimensional earthquake analysis of concrete dams considering spatially-varying ground motion

Wang, Jinting; Chopra, Anil K.

Department of Civil Engineering, University of California, Berkeley, Modified from EACD-3D-96 software to include spatially-varying strong ground motion., 2008,

The response analysis procedure of the earlier EACD-3D-96 has been extended to consider a spatially-varying excitation along the dam-foundation rock interface. Dam and fluid domain substructures are modeled by three-dimensional finite elements; however, the foundation rock region is modeled by boundary elements on the surface of the canyon along the dam-foundation rock interface. The analytical procedure underlying the computer program EACD-3D-2008 assumes linear behavior for concrete dam, impounded water and foundation rock. Thus the possibility of concrete cracking, construction joints of the dam opening during vibration, or water cavitation are not considered. The initial static analysis considers only the effects of the self weight of the dam and hydrostatic pressures on the upstream face of the dam; thermal effects in the concrete or construction sequence of the dam are not included. This report is intended as a user's guide for EACD-3D-2008. Selected features of the computer program, which would facilitate its use, are described; idealization of the system is discussed; the required input data are described; the output is explained; and the response results from an example analysis are presented.

Available online: http://nisee.berkeley.edu/documents/SWSC/EACD-3D-2008.rar (3 MB)