再生混凝土梁时变挠度分析与预测

发布时间：2018-04-03 18:37

本文选题：再生混凝土梁　切入点：时变挠度　出处：《工程力学》2017年04期

【摘要】：重点考虑收缩和徐变等因素,对再生混凝土梁的时变挠度进行了理论分析。假定收缩和徐变不会相互影响,通过截面时随分析,得到再生混凝土梁时变相对受压区高度表达式。依据现有文献的试验数据,对分析结果准确性进行了验证。结果表明:对于不同的再生粗骨料取代率,时变挠度的计算结果与试验结果相比,大多数误差可控制在19%以内。该文的工作较好揭示了再生混凝土梁时变挠度的演化特点,可以为今后再生混凝土梁的长期挠度预测提供理论基础。
[Abstract]:Considering the factors of shrinkage and creep, the time-varying deflection of recycled concrete beam is analyzed theoretically.Assuming that shrinkage and creep do not interact with each other, the time-varying relative compressive zone height expression of recycled concrete beams is obtained through cross-section time-dependent analysis.The accuracy of the analysis results is verified according to the experimental data of the existing literature.The results show that the calculated results of time-varying deflection can be controlled within 19% of the experimental results for different replacement rates of recycled coarse aggregate.The work in this paper reveals the evolution characteristics of the time-varying deflection of recycled concrete beams and can provide a theoretical basis for the prediction of long-term deflection of recycled concrete beams in the future.
【作者单位】：同济大学建筑工程系;
【基金】：国家杰出青年科学基金项目(51325802)
【分类号】：TU375.1

【相似文献】