NEHRP Clearinghouse

Title
Hysteretic Behavior of Reinforced Concrete Framed Walls.
File
PB267298.pdf
Author(s)
Wang, T. Y.; Bertero, V. V.; Popov, E. P.
Source
National Science Foundation, Washington, D.C., December 1975, 398 p.
Identifying Number(s)
EERC-75-23
Abstract
Two identical three-story framed wall specimens, representing the lower portion of a ten-story framed wall building, were tested under monotonic and cyclic loading to study the behavior of the wall under seismic excitations. One-third-scale models of the specimen were used. The code-designed building consisted of ductile moment-resisting frames with two framed walls in the north-south direction and four framed walls in the east-west direction. Its floor system consisted of a flat reinforced concrete slab. To simulate the boundary conditions of the prototype wall as well as to transfer uniformly the applied shear force through the whole width of the wall, a portion of the flat slab was cast with the wall specimen. Shear force, axial force, and bending moment were applied to simulate the effects of gravity loads and earthquake excitations on the prototype. After incipient failure, each specimen was repaired to study the effectiveness of the repairing technique. Free vibration tests were carried out to determine the critical damping ratio and the frequency of vibration of each specimen before and after loading them to different levels of damage.
Keywords
Dynamic response; Ground motion; Buildings; Earthquake engineering; Loads (Forces); Mechanical hysteresis; Earthquakes; Reinforced concrete; Walls; Earth movements; Dynamic structural analysis