スパイラルシースを用いたプレキャスト耐震壁用の重ね継手の性状

概要

論文の詳細を見る
Experimental and analytical investigations were conducted to understand the structural behavior of the spirally confined lap splice for precast concrete structural walls. In the behavior model of the lap splice, the flow of forces was idealized as in a plane truss. The results of nonlinear analyses using constitutive response models for truss members agree well with the experimental results. Failure occurs when the distribution of bond stress between concrete and winding sheath becomes even throughout the length. As the lap length increases, the lap splice tensile strength increases because the concrete portions providing bond resistance increase. Reducing the spiral steel pitch and increasing the concrete cover enhance the maximum local bond resistance and hence the tensile strength due to an increase in the maximum strength of triaxially confined concrete struts.
1997-07-30