고강도 콘크리트 전단벽의 강도와 변형능력

Strength and deformability of framed reinforced concrete shear walls with openings were investigated based on available experimental data. Up to 61 shear wall, tested either under monotonically increasing lateral loading or reversed lateral loading, were evaluated in terms of load and drift capacities. Results of 61 tests of shear walls with openings were reviewed to evaluate the current design provisions defined in ACI 318-02 and AIJ Code pertaining to shear design of shear walls without openings. The results indicate that ACI 318-02(considering AIJ Reducing Ratio) were found to overestimate the shear strength of shear walls with openings while AI] tended to underestimate that. A reasonable lower bound to the shear strength of high-strength concrete shear walls is found to be 1.09√fcu kgf/㎠. While deformability of shear walls with openings reduces with opening periphery ratio, the product of area ratio and strength of horizontal reinforcement increases. The magnitude of axial stress and shear stress had a significant effect on the deformability of shear walls with openings.