Linear and nonlinear response of concrete slab on CFR dam during earthquake

Behaviour of the reinforced concrete face slabs of concrete faced rockfill dams during impounding

“…The tensile stresses obtained in this study (as high as 20 MPa) were beyond the acceptable levels showing significant cracking of the concrete face slab may be an issue for a CFRD. Considering the reservoir interaction for the rockfill, principal tensile stresses on the order of 5 MPa were obtained for the face slab in Bayraktar and Kartal (2010). Zhang and Zhang (2009) employed a hardening elasto-plastic model with two yield surfaces for the rockfill, a softening model for the interface and linear elastic concrete elements for the simulation of a CFRD.…”

Investigation of the cracking of CFRD face plates

“…There have been several numerical studies on CFRDs focusing on performance during seismic loading [11][12][13]. Using a linear elastic model for the concrete face plate, axial tensile stresses of up to 20 MPa were obtained during earthquake excitation on a face plate in [11].…”

“…The nonlinear, confinement-dependent behavior of rockfill and the stick slip behavior of the interface were modeled in [12]; compressive and tensile stresses as high as 6 and 4 MPa, respectively, were obtained during shaking. Considering the effect of the reservoir, principal tensile stresses on the order of 5 MPa were obtained for the face plate in [13]. A face plate, as described in these studies, can be subjected to high tensile stress, necessitating detailed nonlinear modeling for an accurate prediction of its performance.…”

Seasonal differences in seismic responses of embankment on a sloping ground in permafrost regions

“…In addition, The Mohr-Coulomb yield criterion, often used in static analysis, is borrowed to judge plastic yielding. Although this criterion is adopted in many dynamic analyses [5,10,19,[37][38][39], it can not comprehensively describe the complex dynamic behavior of a soil, particularly the strain dependent behavior of stiffness and damping in the frozen soil. So the dynamic stress-strain model of the frozen soil deserves further study.…”

“…where ε e ij is elastic strain; ε p ij denotes plastic strain; dλ is plastic coefficient; Q represents plastic potential function, and it is equivalent to Mohr-Coulomb yield function since the freezing-thawing soil is assumed to meet associative plastic flow rule [38,39].…”