A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Comparison of Soil Response during Earthquake Excitation and Uniform Cyclic Loading
Characterization of soil response under cyclic loading is one of the major challenges in evaluating liquefaction triggering. In this paper, the results of numerical simulations are presented for dynamic soil behavior during uniform and earthquake loading. For this purpose, Plasticity Model for Sands (PM4Sand) was utilized to simulate soil behavior for a range of loading intensities. This model incorporates a 2-surface kinematic yield mechanism to simulate soil behavior, and more importantly, considers the effect of fabric change and void ratio evolution during loading. Cyclic soil behavior was simulated under a series of uniform sine wave loading and earthquake excitations under controlled boundary conditions and stress paths. Dissipated energy and accumulated pore water pressures were evaluated during these simulations. Triggering of liquefaction was also monitored with different failure criteria. Thereafter, soil behavior was characterized, and a new approach was developed to represent earthquake time histories by equivalent uniform stress series. The proposed approach relates earthquake to uniform loading by the energy dissipated during the stress time history.
Comparison of Soil Response during Earthquake Excitation and Uniform Cyclic Loading
Characterization of soil response under cyclic loading is one of the major challenges in evaluating liquefaction triggering. In this paper, the results of numerical simulations are presented for dynamic soil behavior during uniform and earthquake loading. For this purpose, Plasticity Model for Sands (PM4Sand) was utilized to simulate soil behavior for a range of loading intensities. This model incorporates a 2-surface kinematic yield mechanism to simulate soil behavior, and more importantly, considers the effect of fabric change and void ratio evolution during loading. Cyclic soil behavior was simulated under a series of uniform sine wave loading and earthquake excitations under controlled boundary conditions and stress paths. Dissipated energy and accumulated pore water pressures were evaluated during these simulations. Triggering of liquefaction was also monitored with different failure criteria. Thereafter, soil behavior was characterized, and a new approach was developed to represent earthquake time histories by equivalent uniform stress series. The proposed approach relates earthquake to uniform loading by the energy dissipated during the stress time history.
Comparison of Soil Response during Earthquake Excitation and Uniform Cyclic Loading
Kamalzare, Soheil (author) / Olgun, C. Guney (author)
IFCEE 2015 ; 2015 ; San Antonio, Texas
IFCEE 2015 ; 1207-1216
2015-03-17
Conference paper
Electronic Resource
English
COMPARISON OF SOIL RESPONSE DURING EARTHQUAKE EXCITATION AND UNIFORM CYCLIC LOADING
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