Recently, rationally-designed bridges are popular types of steel bridges in Japan, because of the reduction of construction cost and labor. They comprise of long spanned prestressed concrete slabs and steel plate-girder bridges without diagonals and laterals. But they are paid much attention, because their applicable shapes are limited constructing up to now. This report describes the structural behavior of them with skew and bending at piers beyond ordinary bridge design specification through the numerical analysis.
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