NEHRP Clearinghouse

Title
Inelastic Seismic Response of Reinforced-Concrete Low-Rise Shear Walls and Building Structures.
File
PB90123217.pdf
Author(s)
Cheng, F. Y.; Mertz, G. E.
Source
National Science Foundation, Washington, DC., October 1989, 445 p.
Identifying Number(s)
CIVIL ENGINEERING STUDY-89-30
Abstract
A technique of calculating inelastic deformation of low-rise shear walls is presented with consideration of coupling effect for bending and shear deformations, axial deformation, and the base rotation. The hysteresis loops are established on the basis of experimental data and analytical results for bending, shear and axial forces. Eleven hysteresis rules are comprehensively formulated for bending and shear with all possible combinations of large and small amplitude loops. Response studies of low-rise symmetric and unsymmetric buildings are performed. The peak base shear, displacement, ductility, and excursion ratio, response modification factor, and damage index are investigated for their sensitivity to the structural configurations and the interacting earthquake motions. Various earthquakes such as 1940 El Centro, 1952 Taft, and 1985 Mexico are used to study the response behavior of these structures. The response modification factor is found to be dependent on the building configuration, types of ground motion, orientation and number of components of the ground motion, and the damage level in the building.
Keywords
Dynamic response; Bend moments; Elastic properties; Earthquake engineering; Earthquake resistant structures; Axial loads; Hysteresis; Graphs (Charts); Shear properties; Walls; Shear strain; Deformation; Dynamic structural analysis