State of Art of Seismic Design for CFRD From Earthquake-induced Damage of Zipingpu Dam

Abstract

Based on the detailed in-situ investigations and analyses of earthquake-induced damage of Zipingpu CFRD (Concrete Faced Rock-fill Dam) after the ‘5.12’ Wenchuan earthquake in China, some available guidelines and experiences for seismic design of CFRD with the height above 200 m which will be built in high seismicity area can be obtained. As we know, the Zipingpu CFRD subjected to the strong earthquake with magnitude of IX suffers a little damage and operates well after repair, it is proved that reasonable seismic design can prevent the CFRD dams from severe damage or collapse during strong earthquake. The key parts of seismic design for CFRD located high seismic area mainly contain that: 1) protection of dam crest and slopes, 2) improving tensile and compressive strength of vertical joints, 3) seismic design of horizontal construction joint, 4) reducing earthquake-induced deformation, etc.