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承压板位置对混合塔结合部承载性能影响

Journal of Tongji University(Natural Science)(2018)

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Abstract
为揭示混合塔结合部承压板位置对承载性能及传力机理的影响,以两座混合塔斜拉桥为工程背景,进行了前承压板式和后承压板式结合部缩尺模型承载性能试验,测试了钢与混凝土的应变及相对滑移的分布,并对两种结合部的差异进行了比较分析.研究结果表明,混合塔前、后承压板式结合部的承压板传力比例均为40%左右,减少了连接件传递剪力的比例;由于承压板发挥较大作用,前、后承压板式结合部钢与混凝土间相对滑移较小;连接件剪力分布取决于承压板位置;前、后承压板式结合部均能发挥承压板传压和连接件传剪的复合作用,可作为混合塔结合部构造形式.
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Key words
bridge engineering,hybrid tower,joint connection,model test,bearing plate
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