2009•Ha'erbin gongye daxue xuebaoRequires access
Seismic performance of high-rise shear wall with concealed truss
Jianwei Zhang
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Abstract
In order to improve the seismic performance of RC high-rise shear wall,the RC high-rise shear wall with concealed truss was brought forward.The concealed truss included steel truss,steel bar truss and the composition truss of shaped steel and steel bar.This new shear wall was a double composite shear wall,viz.,the combination of truss and shear wall and the combination of steel and concrete.The experimental study was carried out on the seismic performance of six 1/3 scale high-rise shear walls,including one with steel frame,four with different style concealed trusses as well as a normal one.The load-carrying capacity,ductility,stiffness and its attenuation,hysteretic property,energy dissipation and failure phenomena of each specimen were contrastively analyzed.The formulas of calculating load-carrying capacity and stiffness were established.Some suggestions for seismic design of RC high-rise shear wall with concealed truss were put forward.The results obtained from formulas and experiments were in good agreement.Experimental results showed that,compared with normal RC high-rise shear wall,the seismic performance of the RC high-rise shear wall with steel frame and concealed truss was obviously improved.