連層耐震壁の曲げスリップに関する研究

概要

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The multi story shear wall (MSSW) in which the flexural yielding precedes shear failure would have flexural slip behavior, which would lead to the damage of the concrete, and the decline of the strength and ductility. This paper presents the slip mechanism of MSSW under a cyclic loading after flexural yielding and methods to control the behavior. To study the mechanism of the slip behavior, cross-section analyses using fiber models were conducted. There are four models with varying their arrangement of bars and axial load. The results of analyses show the region which the slip behavior will occur. The experimental test whose specimens is assuming 7-story building with MSSW preceding flexural yielding were conducted. Three specimens whose parameters are axial load and with/without bond of reinforcements were used. The paper concluded that (1) in case that the axial force is zero, the slip behavior after flexural yielding was occurred, (2) the slip behavior after flexural yielding can be controlled by increasing the axial force. Although, the collapse of concrete induced by axial load should be considered by reinforcing or controlling the slip behavior.
一般社団法人日本建築学会の論文
2009-03-27