Stiffness For Linear Seismic Analysis Of Concrete Walls

Kausela statistical analysis of reinforced concrete wall buildings damaged during the 2010 chile earthquake.

Stiffness for linear seismic analysis of concrete walls.

Test of high rise core wall. There is a wide variety of models that have been used to simulate the non linear behavior of reinforced concrete walls. Guidance for effective stiffness modeling of shear walls in codes standards and references while fairly clear as they apply to wind analysis lack clarity and consistency when it comes to seismic analysis applications. A test was conducted on a large scale model of a concrete.

Perry adebar ahmed m. Effective stiffness for seismic analysis author s. A trilinear bending moment curvature model is used to develop a general method for determining the effective flexural stiffness of concrete walls for use in linear seismic analysis. 5 appears on pages s.

Such a stiffness is illustrated by the ei effective line in figure 1. The method accounts for the initial section stiffness e c i g prior to cracking and the retention of initial stiffness after cracking due to axial compression. Thus the appropriate stiffness for linear seismic analysis is an effective initial stiffness of the structure as it reaches the limit of essentially linear behavior. The effective initial stiffness should account for cracking of the concrete and other phenomena that reduce.

Effect of stiffness on the seismic performance of code conforming reinforced concrete shear wall buildings.