| 细观结构对混凝土动态力学特性的影响研究 |
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| 引用本文： | 雷光宇,孙剑虹,王欢元.细观结构对混凝土动态力学特性的影响研究[J].西北地震学报,2018,40(5):988-995. |
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| 作者姓名： | 雷光宇 孙剑虹 王欢元 |
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| 作者单位： | 陕西省土地工程建设集团, 陕西 西安 710075;西安理工大学岩土工程研究所, 陕西 西安 710048;陕西地建土地工程技术研究院有限责任公司, 陕西 西安 710075;陕西省土地整治工程技术研究中心, 陕西 西安 710075,陕西省土地工程建设集团, 陕西 西安 710075;陕西地建土地工程技术研究院有限责任公司, 陕西 西安 710075;陕西省土地整治工程技术研究中心, 陕西 西安 710075,陕西省土地工程建设集团, 陕西 西安 710075;陕西地建土地工程技术研究院有限责任公司, 陕西 西安 710075;陕西省土地整治工程技术研究中心, 陕西 西安 710075 |
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| 基金项目： | 退化及未利用土地整治创新团队（2016KCT-23） |
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| 摘 要： | 混凝土作为非均质复合材料,其力学特性受材料的微细观结构形态影响比较明显,物理试验很难将各因素孤立出来单独考虑其对混凝土力学特性的影响,本文从数值试验入手,把混凝土看作是由骨料、砂浆以及界面组成的三相材料,研究动压和动拉荷载作用下细观结构中诸如骨料位置、单元尺寸、材料强度以及骨料粒径对混凝土动态力学特性的影响,发现混凝土的细观结构对其动态力学特性有影响,不同因素对混凝土动态力学特性影响权重不同,相同因素在不同荷载作用下的影响结果也不同。
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| 关 键 词： | 混凝土 细观结构 动荷载 力学特性 |
| 收稿时间： | 2017/8/20 0:00:00 |
Effect of Mesostructure on the Dynamic MechanicalProperties of Concrete |
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| LEI Guangyu,SUN Jianhong and WANG Huanyuan.Effect of Mesostructure on the Dynamic MechanicalProperties of Concrete[J].Northwestern Seismological Journal,2018,40(5):988-995. |
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| Authors: | LEI Guangyu SUN Jianhong and WANG Huanyuan |
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| Institution: | Shaanxi Land Engineering Construction Group, Xi''an 710075, Shaanxi, China;Institute of Geotechnical Engineering, Xi''an University of Technology, Xi''an 710048, Shaanxi, China;Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Conseraction Growp Co., Ltd., Xi''an 710075, Shaanxi, China;Xhaanxi Provincial Land Consolidation Engineering Technology Research Ceuter, Xi''an 710075, Shaanxi, China,Shaanxi Land Engineering Construction Group, Xi''an 710075, Shaanxi, China;Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Conseraction Growp Co., Ltd., Xi''an 710075, Shaanxi, China;Xhaanxi Provincial Land Consolidation Engineering Technology Research Ceuter, Xi''an 710075, Shaanxi, China and Shaanxi Land Engineering Construction Group, Xi''an 710075, Shaanxi, China;Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Conseraction Growp Co., Ltd., Xi''an 710075, Shaanxi, China;Xhaanxi Provincial Land Consolidation Engineering Technology Research Ceuter, Xi''an 710075, Shaanxi, China |
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| Abstract: | Concrete is a nonhomogeneous composite material. Thus, its mechanical properties are affected by its mesostructure, and the isolation of the influences of various factors on the mechanical properties of concrete is difficult. In this study, concrete is considered as a three-phase material that consists of aggregates, mortar, and interface. Numerical experiments are conducted to analyze the influence of microstructural parameters (e.g., aggregate position, element size, material strength, and aggregate size) on the properties of concrete under dynamic compressive load and dynamic tensile load. The mesostructure of concrete affects the dynamic mechanical properties of concrete. However, different factors have different weights, and the same factor may exert different effects under different loads. |
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| Keywords: | concrete mesostructure dynamic load mechanical property |
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