Building upon the intricate interplay of hydration, temperature, moisture, and mechanical forces, we introduce an innovative Chemo-Thermo-Hygro-Mechanical (C-T-H-M) multi-field coupling model tailored to massive concrete structures. This model facilitates the analysis of the cracking risk index through the application of the maximum effective energy density ratio. An exhaustive inquiry delves into the correlation between this index and factors such as structural form, failure driving force, and humidity effect in massive concrete. Findings reveal significant disparities in the cracking risk index across distinct structural configurations. By examining diverse stress scenarios and accounting for various failure driving forces, a Three parameters emerges as the chief contributor to the highest cracking risk index. Moreover, the proposed C-T-H-M model exposes a heightened surface cracking risk index in comparison with conventional Chemo-Thermo-Mechanical approaches. These observations underscore the significance of adopting a holistic perspective when assessing cracking risk indices and devising crack mitigation strategies, taking into account structural aspects, failure driving force, and humidity effect.

中文翻译：

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基于 Chemo-Thermo-Hygro-Mechanical 多场耦合模型的块状混凝土开裂风险指数研究


基于水合作用、温度、湿度和机械力的复杂相互作用，我们引入了一种创新的化学-热-湿-机械 （C-T-H-M） 多场耦合模型，专为大型混凝土结构量身定制。该模型通过应用最大有效能量密度比来促进开裂风险指数的分析。详尽的调查深入探讨了该指数与大块混凝土的结构形式、破坏驱动力和湿度效应等因素之间的相关性。研究结果显示，不同结构构型的开裂风险指数存在显著差异。通过检查不同的应力情景并考虑各种失效驱动力，三个参数成为最高开裂风险指数的主要贡献者。此外，与传统的化学热机械方法相比，所提出的 C-T-H-M 模型暴露了更高的表面开裂风险指数。这些观察结果强调了在评估开裂风险指数和制定裂缝缓解策略时采用整体视角的重要性，同时考虑结构方面、失效驱动力和湿度影响。