| dc.description.abstract | Slender walls with discontinuities at their bases, such as flag walls or walls with
door openings or access, are common in Chilean practice because of the architectural
requirements at facades, first floors, and underground levels. However, there
is limited information about the behavior of such elements, and no designs or
guidelines in the current codes consider the effects of discontinuities at the base.
In this work, two analytical models are presented that estimate the yield displacement,
yield curvature, and ultimate curvature of walls with openings, such as flag
walls (setback), based on the dimensions of the opening and the longitudinal
boundary steel ratio calibrated from a parametric analysis of a nonlinear finite element
model. The results indicate that these discontinuities can have a major
impact on the elastic displacement, reducing it because of the presence of a more
rigid section above the opening, and also on the inelastic component, by increasing
the curvature (and the strain) at the wall base because the opening tends to
confine the plastic hinge within that area. | |
