Nonlinear earthquake response analysis and energy calculation for seismic
slit shear wall structures
Jiang Huanjun (蒋欢军) and Lu Xilin (吕西林)
State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji
University, Shanghai 200092, China
Abstract: Based on the concept of structural passive control, a new
type of slit shear wall, with improved seismic performance when compared to an
ordinary solid shear wall, was proposed by the authors in 1996. The idea has
been verified by a series of pseudo-static and dynamic tests. In this paper a
macro numerical model is developed for the wall element and the energy
dissipation device. Then, nonlinear time history analysis is carried out for a
10-story slit shear wall model tested on a shaking table. Furthermore, the
seismic input energy and the individual energy dissipated by the components are
calculated by a method based on Newmark-b assumptions for this shear wall model,
and the advantages of this shear wall are further demonstrated by the
calculation results from the viewpoint of energy. Finally, according to the
seismic damage criterion on the basis of plastic accumulative energy and maximum
response, the optimal analysis is carried out to select design parameters for
the energy dissipation device.
Keywords: shear wall; energy dissipation; time history analysis;
optimal analysis; seismic damage criterion
