고강도 철근콘크리트 부재에서 철근의 장부작용에 대한 구조변수의 영향

Influence of Structural Parameters on the Dowel Action of Reinforcing Bar in Reinforced High Strength concrete Members

This study is aimed at the experimental investigation of the influence of the structural parameters such as concrete cover, width of specimen and bar size on the dowel action of reinforcing bari in high strength concrete members. Based on the proper combination of these parameter, a total of 46 specimens has been cast for fc'= 500 ㎏/㎠ and another 46 specimens for fc'= 700 ㎏/㎠, and cured at the laboratory. Comparative analyses have been made for the parametric contribution to the dowel strength from the test results, and a regress equation has been suggested.