Abstract
In this paper, mid-rise shear wall with concealed truss was proposed. This new composite shear wall includes two kinds of composition: one is the composition of two bearing systems, including truss and shear wall, and the other is the composition of two materials, including steel and concrete. Therefore, it is a double composite shear wall. The experimental study on the seismic behavior of six 1/3 scale mid-rise shear walls, including an ordinary mid-rise shear wall, a mid-rise shear wall with steel frame, and four mid-rise shear wall with concealed truss made of different materials, was studied. Based on the experimental study, the stiffness and its attenuation, bearing capacity, ductility, hysteretic property, energy dissipation, and failure phenomena of each shear wall were contrastively analyzed. The formulas of bearing capacity and stiffness were established. The results obtained from the formulas and those from experiment are in good agreement. Some suggestions for seismic design of shear wall are given in this paper. The experimental results show that the seismic behavior of the mid-rise shear wall with steel frame and that of every truss with different materials is obviously improved.
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