Earthquake Analysis of the Modified Geometry of the Concrete Nonoverflow Section Richard B. Russell Dam

摘要

Finite element computer analyses were performed for the modified geometry of the nonoverflow section of the Richard B. Russell Dam. Input for these analyses were synthetic earthquake records whose response spectra bounded the project design spectra prescribed by the Nuclear Regulatory Commission (NRC) Guide 1.60 at 0.25-g ground acceleration. Also the effects of variation in the elastic modulus of the concrete were studied using scaled time histories from the Helena and San Fernando earthquakes. A comparison of the results from these analyses is made with the actual earthquake experience at Koyna Dam in India. Acceleration, velocity, and displacement time histories along with the associated response spectra are presented in Appendix A. (Author)