王云晖,徐海岩,黄榆,龙华,何毅,申立学

• 1:四川农业大学土木工程学院
• 2:日喀则市科学技术局高新技术产业发展中心
• 3:西藏明德建设工程质量检测有限公司

摘要(Abstract)：

本文在喷射混凝土力学性能研究的基础之上，借助分子动力学模拟中径向分布函数（RDF）、自由体积分数（FFV）、均方位移（MSD）、浓度分布（CP）和弹性模量等指标，对单层衬砌早高强喷射混凝土的强度特性进行了模拟研究。研究表明：所建立模型的RDF曲线与目前已被证实的模型峰值趋势表现一致，且模型弹性模量和泊松比均处于一个合理的范围之内。其中掺加了30%超微粉复合掺和料的早高强喷射混凝土的弹性模量数值较基准组模型提升了6.92%，同时其FFV数值较基准组模型低3.31%。这表明掺入超微粉的衬砌整体力学性能较好且内部孔隙分布较为均匀。本文的研究结果为分子动力学模拟单层衬砌喷射混凝土提供理论支撑。

关键词(KeyWords)： 单层衬砌;早高强喷射混凝土;力学性能;分子动力学模拟;超微粉复合掺和料;纳米晶胶聚合物

Abstract:

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基金项目(Foundation): 西藏自治区科技厅-日喀则市区域科技协同创新专项（QYXTZX-RKZ2023-02）;; 日喀则市科技局科技计划项目;; 四川省自然科学基金青年基金（2024NSFSC0935）

作者(Author): 王云晖,徐海岩,黄榆,龙华,何毅,申立学

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