Nonlinear Finite Element Analysis of Framed Shear Walls

摘要

An extensive experimental and theoretical research has been carried out at the Structural Research Laboratory,rnUniversity of Houston (UH), to study the behavior of RC framed shear walls. Fourteen one-third scale specimens werernsystematically tested under reversed cyclic loading. The envelopes of the load-deformation responses were accuratelyrnpredicted by a non-linear finite element program called FEAPRC. FEAPRC was developed at UH by modifying the wellknownrnfinite element code FEAP for specific application to concrete structures. In FEAPRC, the analysis of crackedrnreinforced concrete elements utilizes the new smeared constitutive laws established in the Fixed-Angle Softened TrussrnModel (FA-STM). These constitutive laws include the smeared stress-strain relationships of concrete in compression and inrntension, as well as the smeared stress-strain relationship of steel bars embedded in concrete. The smeared constitutive lawrnof cracked concrete in shear, which was derived recently in a rational manner, was also verified.