合成・混合構造３/繊維補強コンクリート(構造)/環境配慮型コンクリート（構造）

[2079] 有限要素解析とX線技術を用いた遠心成形SFRC杭のせん断挙動解析

Chen Chi¹, LIM Sopokhem¹, 近藤壮一郎², 秋山充良¹ (1.早稲田大学 2.日本コンクリート工業 )

キーワード：steel fiber、fiber orientation、PHC pile、centrifugal forming、X-ray、shear behavior

This paper presents a finite element (FE) method to assess the shear performance of hollow circular steel fiber reinforced concrete (HSFRC) piles, considering the effects of fiber distribution and orientation influenced by centrifugal forming. A novel approach is developed to identify a constitutive tensile stress-crack opening relation for the HSFRC material using prisms made of SFRC and fiber distributions observed in small HSFRC piles visualized through an X-ray technique. The FE method provides a highly accurate prediction of the shear behavior of large HSFRC piles.