Title:
Shake-Table Model Tests on Recycled Aggregate Concrete Frame Structure
Author(s):
Jianzhuang Xiao, Changqing Wang, Jie Li, and Mathews Mulife Tawana
Publication:
Structural Journal
Volume:
109
Issue:
6
Appears on pages(s):
777-786
Keywords:
frame structure; recycled aggregate concrete (RAC); seismic behavior; shake-table tests; Wenchuan earthquake wave
DOI:
10.14359/51684121
Date:
11/1/2012
Abstract:
A 1/4-scale model of a two-bay, two-span, six-story recycled aggregate concrete (RAC) frame structure was tested on a shake table. Dynamic characteristics of the structure were assessed through white-noise tests. The building suffered increasing levels of damage as excitations became more severe. The damage ranged from cracking to crushing of concrete. Nevertheless, the building did not collapse under base excitations with peak ground acceleration (PGA) up to 1.170g. The interstory drift, seismic force, interstory shear, hysteresis curves, capacity curve, ductility coefficient, and stiffness degradation were computed and analyzed. Furthermore, general behavior of the RAC frame structure model was compared and discussed with that of the normal aggregate concrete (NAC) frame structure. The test results demonstrate that it is feasible to apply and popularize RAC frame structures less than six stories high in aseismic regions and the Sichuan Wenchuan post-earthquake reconstruction area.