Seismic Response Analysis of Lightly Reinforced Concrete Shear Walls
Inkyu Rhee
International Journal of Railway, vol. 3, no. 2, pp.73-82, 2010
Abstract : Global and local behaviors of a lightly RC shear walls are investigated in this paper. For the sake of cyclic behaviors,
nominal ground accelerations of 0.15 g, 0.40 g and 0.55 g which associated with natural periods of the walls are applied
as listed in French CAMUS-2000 shake table test. Modified Kent & Park model, Drucker-Prager model for concrete
material and Giufre-Menegotto-Pinto model for rebar are used for time history analyses using fiber/solids elements
respectively. Alternatively, Eulerian beam analysis are discussed by imposing inelastic hinges at the most possible plastic
hinge location using modified Takeda's trilinear model with stiffness reduction. Relative displacements, base shears,
bending moments of 5-story shear building with 36-tons of mass under bi-lateral seismic excitation are extracted and
compared with EC-8, PS-92 and KBC-09 provisions. Multi-scaled degradation process; material damage, elemental
fracture and structural failure in turn is discussed in the view of numerical accuracy, efficiency and limitation depending
on three different model-based analyses.
Keyword : Lightly reinforced shear walls, Nonlinear time history analysis, Earthquake resistance |