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Title |
Design of Ground Floor Slab According to the Method for Evaluating the Tensile Performance of Steel Fiber Reinforced Concrete
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Authors |
이종한(Jong-Han Lee) ; 조백순(Baik-Soon Cho) ; 조창오(Chang-Oh Cho) |
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DOI |
http://dx.doi.org/10.4334/JKCI.2016.28.1.095 |
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Keywords |
등가 휨강도비 ; 잔류 휨강도 ; 강섬유 보강 콘크리트 ; 지반 바닥슬래브 ; 항복선 이론 equivalent flexural strength ratio ; residual flexural strength ; steel fiber reinforced concrete ; ground supported slab ; yield line theory |
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Abstract |
Flexural strength of concrete ground slab reinforced with steel fiber is evaluated using the equivalent flexural strength ratio of steel fiber reinforced concrete based on the yield line theory. Recently, the European standard specifies that the tensile performance of the steel fiber reinforced concrete be evaluated directly from the residual flexural strength after the cracking of concrete. Thus, in the study, an experiment was carried out to evaluate the conventional equivalent flexural strength ratio and the residual flexural strength of the steel fiber reinforced concrete. Then the design flexural strength was investigated according to the location of a point load, based on the ratio of the radius of contact area of the load to the radius of relative stiffness. Design flexural capacity obtained from ACI 360R-10 was smaller than that from TR 34 (2003 & 2013). In addition, TR 34 (2013), which evaluates the design flexural capacity based on the residual flexural strength, showed slightly smaller value than TR 34 (2003).
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