新材料・新工法（構造）

[V-635] Consideration on separation behavior of joint surface between strand cast-in-place pile and steel pipe column

〇Seiji Ishibashi¹, Satoshi Takisawa¹, Kenichi Suzuki¹, Shinichi Yamanobe², Takuya Iwamoto², Ikuko Kuroiwa² (1.East Japan Railway Company, 2.Kajima Corporation)

Keywords:Strand, Cast-In Place Pile, Pile Head Part Joint

The strand cast-in-place pile method uses a steel strand or the like (hereafter, “strand”) as the steel in the axial direction of the cast-in-place pile. The joint structure between the pile and the steel column using this method is to fix the strand apartment building to the base of the steel tube column with a nut. Positive and negative alternating loading tests were performed to verify the separation behavior such as separation load on the joint surface. The results showed that the separation load was larger than the calculated value due to the pullout resistance of the stud.