EXPERIMENT STUDY ON THE SEISMIC BEHAVIOR OF THE SRC SHORT- PIER SHEAR WALL WITH CONFINED CONCRETE
RC (Reinforced Concrete) short-pier shear wall structure is a new type of mid-rise residential structure system. In this paper, a new form of construction employing shaped steel as boundary element of RC short-pier shear wall is put forward. The structure of this boundary element (named shaped steel confining boundary element) is a lattice form framed by steel (channel steel, angle steel and lace bars). It is embedded in the boundary zone of SRC (Steel Reinforced Concrete) short-pier shear wall to make it possible to improve the bearing capacity and ductility of this shear wall and to improve its seismic performance. 9 short-column specimens of these boundary elements are tested under vertical load, and 2 models of this SRC short-pier shear wall are tested under reversed cyclic loading. The failure processes and modes of this short specimens and SRC short-pier shear walls are observed. The failure characteristics and mechanical behaviors such as the loading -displacement hysteretic curves, loading bearing capacity, displacement ductility and energy dissipation are analyzed. The law about bearing capacity and displacement ductility of this shaped steel confining boundary element influenced by lateral constraining is revealed. The experimental result indicates that the confinement effects are closely related to the pitch of lace bars, and the hysteretic curves of SW2 specimen of this SRC shortpier shear wall are symmetric and plump. The shortcolumn specimens have good ductility and large bearing capacity, and therefore have excellent seismic behavior.
SRC short-pier shear wall shaped steel confining boundary element confined concrete seismic behavior
Wen-Wu Lan Hua Xie Ying Zhang Quan-Jiang Li
College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, P.R. China Guangxi Polytechnic of Construction, Nanning 530003, P.R. China
国际会议
广州
英文
1420-1425
2009-11-28（万方平台首次上网日期，不代表论文的发表时间）