标准模型在循环负荷下对轻质混凝土与烧结聚合物的长期行为具有充分性的标准模型
Paweł M Lewiński1, Zbigniew Fedorczyk1, Przemysław Więch1
1Building Research Institute (ITB), Filtrowa 1, 00-611 Warsaw, Poland.
Materials (Basel, Switzerland)
|January 10, 2026
概括
这项研究通过实验确定了在循环负荷下使用烧结聚合物的轻质混凝土的长期机械性能. 标准模型准确地预测了爬行应变的发展,证实了它适用于循环负荷结构的适用性.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 结构工程 结构工程
背景情况:
- 使用烧结聚合物的轻质混凝土为结构应用提供了潜在的好处.
- 了解其在循环负荷下长期的机械行为对于可靠的设计至关重要.
- 现有的标准模型需要在持续和变化的负载下对这种特定材料进行验证.
研究的目的:
- 通过实验确定在循环负荷下使用烧结聚合物的轻质混凝土的长期机械性能.
- 为了将实验结果与构成方程的既定分析标准模型进行比较.
- 评估这种混凝土对于循环负荷结构的适用性,并调查潜在的形现象.
主要方法:
- 在建筑研究院 (ITB) 实验测试两种轻质混凝土混合物.
- 使用爬行测试机器和张力测量测量用于变形分析.
- 分析了循环负荷下使用积分遗传定律和博尔茨曼叠加原理的爬行菌株.
主要成果:
- 确定了依赖时间的参数,包括弹性,收缩和爬行恢复菌株的断片模量.
- 将实验数据与欧元代码2 (2004年,2023年),2010年模型代码和2020年模型代码的模型进行比较.
- 具有校正因子的标准模型准确地预测了爬行菌株的发展;没有观察到.
结论:
- 使用烧结聚合物的轻质混凝土在循环负荷下表现出可预测的长期行为.
- 标准分析模型,特别是具有校正因子的Eurocode 2 (2023),可提供可靠的预测.
- 该材料适用于循环负荷混凝土结构.
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