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基于影响面法的预应力混凝土桥墩延性能力分析

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摘要 基于响应面法对预应力混凝土桥墩延性能力展开研究。主要分析了纵向钢筋配筋率、箍筋配筋率、预应力钢束的数量和混凝土强度对预应力混凝土桥墩曲率延性系数的影响。参考以往的混凝土桥墩的设计参数,采用Box-Behnken试验设计法,利用数值分析,计算25个预应力混凝土桥墩的延性系数,通过响应面法得到延性系数的回归方程。从计算结果可以看出:预应力钢束的数量对桥墩延性系数影响显著,随着预应力钢束数量的增加,桥墩延性系数曲线减小;随着箍筋配筋率和混凝土强度提高,桥墩延性系数线性增加;随着纵向钢筋配筋率提高,桥墩延性系数略有增加。
出处 《中外公路》 北大核心 2017年第4期199-202,共4页 Journal of China & Foreign Highway
基金 国家留学基金资助项目(编号:201506060044 201508210247) 中央高校基本科研业务费专项资金资助项目(编号:DUT15QY34)
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