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首页> 外文会议>NATO Advanced Research Workshop on Multi-Physics and Multi-Scale Computer Models in Non-Linear Analysis and Optimal Design of Engineering Structures under Extreme Conditions >Thermochemomechanics of cement-based materials at finer scales of observation: Application to hybrid analyses of shotcrete tunnel linings
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Thermochemomechanics of cement-based materials at finer scales of observation: Application to hybrid analyses of shotcrete tunnel linings

机译：粮食尺寸观察尺度的水泥基材料的热化学机械：对喷射隧道衬里混合分析的应用

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摘要

While thermochemomechanical models for the simulation of early-age cement-based materials are nowadays applied to a wide range of engineering problem, allowing to assess the risk of cracking and the level of loading of young concrete, shotcrete, jet-grouted soil,..., the unknown composition of the described materials still introduces uncertainties in the material description which might cause significant errors within the analysis. An adequate tool to introduce mixture variations in material models is provided by the multiscale concept, using the mixture characteristics as input data. Moreover, processes taking place in early-age cement-based materials can be taken into account at the respective scale of observation by adapting the composition and/or the mechanical properties of the constituents. In this paper, the multiscale concept is incorporated into thermochemomechanics of cement-based materials. The so-obtained material model is applied to hybrid analyses of shotcrete tunnel linings, allowing to assess the influence of mixture variations of shotcrete on the level of loading of the lining.
机译：虽然现在应用了早期水泥基材料的热化学机械模型，但现在应用于广泛的工程问题，允许评估裂缝的风险和年轻混凝土，喷射，喷射灌浆土壤的装载水平。 。，所描述的材料的未知组合物仍然在材料描述中引入了不确定性，这在分析中可能导致显着的误差。使用混合特性作为输入数据，通过多尺度概念提供了一种用于引入材料模型的混合变化的适当工具。此外，通过调整组合物的组合物和/或机械性能，可以在观察的各种规模中考虑在早期水泥基材料中进行的过程。在本文中，多尺度概念被纳入基于水泥基材料的热化学机械。所获得的材料模型应用于喷射隧道衬里的混合分析，允许评估吸管混合变化对衬里装载水平的影响。

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