微裂和宏裂之间的相互作用对青混凝土裂传播的影响
Jianhuan Du1, Jingang Wang1, Zhu Fu1
1School of Architecture and Civil Engineering, Chengdu University, Chengluo Avenue No. 2025, Chengdu 610106, China.
Materials (Basel, Switzerland)
|June 27, 2024
概括
微裂和宏裂相互作用,影响青混凝土.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 地质力学 地质力学
背景情况:
- 了解青混凝土裂对于路面长寿至关重要.
- 微裂和宏裂之间的相互作用显著影响材料故障.
- 现有的模型往往简化了裂相互作用,需要更复杂的方法.
研究的目的:
- 为了研究青混凝土中微裂和宏裂之间的相互作用.
- 分析这种相互作用如何影响裂传播行为.
- 开发一款关于青路面破裂的预测模型.
主要方法:
- 开发了微裂-宏裂相互作用的理论模型.
- 使用塔利尔介质方法和离散元素方法 (DEM) 创建了一个半结构模型.
- 进行了半圆形曲虚拟测试,以获得材料参数并分析裂传播.
主要成果:
- 微裂和宏裂之间的相互作用会影响整个青混凝土的损坏.
- 在低微裂密度 (≤0.8) 观察到屏蔽效应.
- 在高微裂密度 (> 0.8) 观察到加速效应.
结论:
- 该研究提供了一种验证的理论和数值模型,用于青路面破裂.
- 这些发现支持长寿命青路面的设计和维护.
- 微裂密度是决定相互作用对裂传播影响的关键因素.
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