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Title |
Size Effects in the Failure of Simple Supported Sandwich Slab Bridges
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Keywords |
치수효과 ; 복합재료 ; 특별직교이방성판 ; 강도감소 ; 슬래브교량 Size effect ; Composite materials ; Specially orthotropic plate ; Strength reduction ; Slab bridges |
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Abstract |
Composite materials can be used economically and efficiently in civil engineering applications when standards and procedure for analysis, design, construction and quality control are to be established. Bridge systems, including the girders and cross-beams, and concrete decks behave as the specially orthotropic plates. For such systems with sections, boundary conditions other than Navier solution types, it is very difficult to obtain its analytical solution. To design the bridge made by the composite materials, cross-section was used as the form-core shape for economical reason and finite difference method was used for output of the stress value. The Tsai-Wu failure criterion for stress space is used. In this paper, the rate of tensile strength reduction due to increased size was considered. And also numerical study is made for these cases.
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