负弯矩区采用UHPC的钢-混组合小箱梁力学性能研究
Transportation Science & Technology（2022）
Abstract
以武汉市东西湖段快速化改造工程为依托,提出简支变连续组合梁墩顶负弯矩区UHPC"T形"接缝方案,通过负弯矩区接缝的构造方案比选和UHPC"T形"接缝设计,利用midas Civil软件建立钢-混组合小箱梁全桥模型,并对组合梁进行1:2的缩尺模型纵向抗弯性能试验.结果表明,钢-混组合小箱梁负弯矩区UHPC"T形"接缝构造满足在正常使用极限状态下规范对结构裂缝宽度的要求.
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Key words
ultra-high performance concrete（UHPC）,composite beam,negative moment zone,bearing capacity,wet joint,finite element analysis
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