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Title |
Verification on the Axial and Flexural Plastic Resistance Analysis of Unconfined Corrugate Steel Sheet and Concrete Composite Section
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DOI |
https://doi.org/10.11112/jksmi.2022.26.3.1 |
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Keywords |
파형강판 합성단면; 한계상태설계; 소성설계; 휨; 압축 Corrugate steel plate-concrete composite section; Limit state design; Plastic design; Flexural; axial |
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Abstract |
For the composite section of corrugated steel sheet and concrete, which is often used in soil structures, a conservative design method based on the ultimate strength state is still applied due to the difficulty of the analysis of compatibility condition. In this study, plastic analysis was performed on the flexural and axial strength of the composite section using two limit state design methods, LRFD and LSD. As a result of the analysis of the experimental results, the LRFD analysis value was interpreted as a conservative results for compressive strength, and it was analyzed that the effect of the concrete compressive strength was greater than the steel ratio of the steel plate. The flexural strength was analyzed to be in good agreement with the experimental results by the LSD analysis. From the parametric analysis on the design variables, the hogging moment, which is affected by the tensile strength of the steel plate, slightly decreased the increasing rate of the strength due to the influence of the bolts connection, but the sagging moment linearly increased according to the increment of steel reinforcement ratio.
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