Structural Evaluation of Three-Sided Concrete Culverts and Comparision of Korean Specifications with AASHTO

세변 콘크리트 암거의 구조적 평가 및 AASHTO와 국내시방서와의 비교 분석

Three-sided concrete culverts can be used to replace short span bridges and multiple sections(barrels) of four-sided concrete box culverts. ASTM Standards do not specify designs for four-sided concrete box culverts with span lengths exceeding 3.6m(12ft) nor do they discuss the three-sided concrete culverts. This paper describes the analysis and design of three-sided flat-top Precast reinforced concrete culverts with span length or 4m(14ft). Both AASHTO and Korean specifications were used to compare the main reinforcing steel. It is shown that the related provisions of Korean specifications result in more conservative design than those of AASHTO specifications.