Paul C. Rizzo Associates, Inc. (RIZZO) has developed efficient computational tools to evaluate the liquefaction potential of earth embankment dams located within high risk seismic regions. Two relevant case histories are the Saluda Dam and the Santee Cooper East Dam Extension, both structures susceptible to liquefaction, and located in South Carolina. Saluda Dam presents liquefaction risks with...

This paper proposes a systematic approach for the seismic design of 2D concrete dams. As opposed to traditional method which does not optimize dam cross-section, proposed engine offers optimal one based on predefined constraints. A large database about 24,000 simulations is generated transient simulation dam-foundation-water system. The includes over 150 various shapes, water levels, and materi...

The design of arch dams usually involves a prolonged process of successive trial and error redefinitions. The current computer technology however enables to automate this task, in order to achieve the most economic solution overall. In the paper, the implemented optimization method of the geometry of concrete arch dams is presented as well as case studies of its application in the design of two...

Traditionally the foundation in a dam is modeled by a sub-structuring approach for the purpose of seismic performance analysis. The main disadvantage of sub-structuring approach is that it cannot be used for solving nonlinear dynamic problems. Therefore, in that case seismic response analysis must be carried out in time domain. Among the different earthquake input mechanisms the deconvolved ear...

This paper aims to employ a 2D thermo-mechanical multi-scale ASR model for the analysis of concrete gravity dam in Western Switzerland. Simulation results are compared field measurements and observations. Analysis reveals negligible effect temperature variation on advancement. The difference length between upstream downstream faces is identified as main source drift at level crest. Study struct...

Based on geological information of the Fengman dam, the seepage flow of the dam is analyzed. There are many different affecting factors on seepage problem, for example: the effect of the parameter of concrete, cut-off wall, the permeability coefficient of cut-off wall, drainage hole and grout curtains etc. On the basis of the research, the seepage control mechanism and effectiveness of the seep...

The Janneh dam is a 162-meter high Roller Compacted Concrete arch-gravity dam under construction in the Nahr Ibrahim Valley of Lebanon. The impounded reservoir will supply water, irrigate agricultural areas and generate hydropower [1]. The dam will serve the Northern areas of Greater Beirut Mount Lebanon [2]. The project site is located in highseismicity region. The Peak Ground Accelerations ar...

This study analyzes the possible modes of seismic wave for concrete gravity dams and damage occurring in body where two dam sections are taken as a case study. Model (1) is typical section dam, while model (2) provided with specified steps at its base. The design waves included Operational Base Earthquake (OBE), Maximum Design (MDE), Credible (MCE) levels. body-foundation-reservoir water intera...