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3D-FE Analysis of Void Scale Causing Damage to Steel-Concrete Sandwich Deck


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Steel concrete composite decks with concrete sandwiched between top and bottom steel plates. Placing highly flowable concrete inside therefore may produce a void between the top deck and concrete owing to the change in volume while the concrete hardens or the accumulation of air while the concrete is placed. The void may cause local damage to the pavement or top steel plate and is likely to deteriorate the durability of the deck. In order to identify the scale of void that may cause damage to steel plates, three-dimensional finite element analysis was conducted. As a result, it was found that cracking occurred at bolted connections on the top steel plate when a wheel load acted at a point at a depth of 3mm or greater where the void was larger than the spacing between bolts.

identifier:長崎大学工学部研究報告 Vol.39(72), pp.20-27; 2009



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    departmental bulletin paper
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