Abstract
Recently, infrastructures made of glass fiber reinforced polymer (GFRP), which have high durability performance and are cheaper than the cost of other fiber reinforced polymers have been constructing in Japan. Because elastic modulus of GFRP is lower than that of steel material and the deflection of structure made of GFRP becomes larger, the structural section area of GFRP members becomes larger than that of steel members. In this study, bending tests and theoretical consideration were carried out to study flexural behavior of the steel and GFRP composite girder that were laminated steel plates with many holes called punching metal to increase the bending rigidity of GFRP girders.
From these results, it was seen that the bending rigidity of the composite girders were varied due to the differences of kinds of punching metal and laminated position of the metal. And the laminated positions and the kinds of punching metal to increase the bending rigidity of the composite girder were found.
