Identification of Connection Flexibility Effects Based on Load Testing of a Steel-Concrete Bridge

关键词 Abstract： In the case of composite girders an effective cooperation of both parts of the section is influenced by deformability of connectors. Limited flexural stiffness of welded studs used commonly in bridge structures does not provide full interaction of a steel beam and a concrete slab. This changes strain distribution in cross-sections of a composite girder and results in redistribution of internal forces in steel and concrete element. In the paper partial interaction index defined on the basis of a neutral axis position which can be used for verification of steel-concrete interaction in real bridge structures rather Composite bridge partial interaction 混凝土桥 负载测试 连接器 钢梁 鉴定 活性 桥梁结构 组合梁桥