橋梁一般(施工)

[I-316] Consideration of the effect of temperature change for multi span continuous steel girder bridges with multi-supported fixing method

〇Takao Yamada¹, Hitoshi Wada¹ (1.TAKADAKIKO CO.,LTD.)

Keywords:23span continuous steel girder bridges, multi-supported fixing method, temperature change, composite effect of the steel girder and the floor slab, axial force caused by temperature change, steel-concrete composite slab

Recently, multi span continuous steel girder bridges with multi-supported fixing method has been increasing for the purpose of improving the seismic resistance, running performance, and noise control of bridges. In this paper, we measured the behavior of multi span continuous steel girder bridges with a steel-concrete composite slab at the multi-supported fixing method against temperature changes. As a result of the measurement, the composite effect of the steel girder and the floor slab shows a behavior with the Young’s modulus ratio of about n=21 even if it is designed as a non-composite girder.