Modelo Constitutivo para Nudos de Hormigón Armado Sismorresistentes, con Deslizamientos de Armaduras

Abstract

It is developed an mathematical model representing the hysteretic behavior of the concentrated rotations at beaun-joint interfaces of earthquake rellistant R/C frames . The model is built from cyclic nonlinear constitutive relations for reinforcinc bars anchored in the joint , for the concrete sections at beam-joint interface, and for the bond between steel and concrete.
The solution scheme is bued on the Newton-Raphson method with special considerations for load reversions , inflexion pointe due to slippace of reinforcinc bars, and concrete contact .
It is shown two examples comparing numerical and experimental results.