| 大型振动台试验花岗岩相似材料配比研究 |
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| 引用本文： | 吕艳,刁钰恒,周泽华,柴少峰,王剑昆,王祚鹏,苏生瑞.大型振动台试验花岗岩相似材料配比研究[J].西北地震学报,2021,43(5):1150-1159. |
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| 作者姓名： | 吕艳 刁钰恒 周泽华 柴少峰 王剑昆 王祚鹏 苏生瑞 |
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| 作者单位： | 长安大学地质工程与测绘学院, 陕西 西安 710054;中国地震局(甘肃省)黄土地震工程重点实验室, 甘肃 兰州 730000;中国地质环境监测院, 北京 100081 |
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| 基金项目： | 国家自然科学基金面上基金（41672285）；地质灾害防治与地质环境保护国家重点实验室开放基金（SKLGP2018K015）；中央高校基本科研业务创新团队支持项目（300102260406，300102261403） |
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| 摘 要： | 为开展秦岭翠华山等大型花岗岩地震山崩的动力响应机制研究，研发配制用于振动台物理模型试验的花岗岩相似材料是该研究工作的基础。选取铁矿粉、石英砂、重晶石粉为骨料，石膏为调节材料，松香酒精溶液为黏结剂的相似材料配比方案，设计考虑4因素5水平的正交试验，并对试验结果进行极差分析及多元线性回归拟合，获得各因素对花岗岩相似材料物理力学性质的影响结果和相似材料配比经验方程。结果表明：花岗岩相似材料的密度随铁粉与重晶石粉占骨料比的增加而增大；随着黏结剂浓度的增加，花岗岩相似材料的抗压强度、弹性模量及黏聚力均显著增大；随着石膏含量的增加，密度、抗压强度及内摩擦角均减小。该试验得到的相似材料配比经验方程可以较好地为花岗岩相似材料或其他相似材料的配制提供参考。
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| 关 键 词： | 大型振动台试验 花岗岩相似材料 正交设计 |
| 收稿时间： | 2021/6/14 0:00:00 |
Proportion of granite similar material used inlarge-scale shaking table tests |
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| Institution: | College of Geological Engineering and Geomatics, Chang''an University, Xi''an 710054, Shaanxi, China;Key Laboratory of Loess Earthquake Engineering of China Earthquake Administration &Gansu Province, Lanzhou 730000, Gansu, China;China Institute of Geo-Environmental Monitoring, Beijing 100081, China |
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| Abstract: | To study the dynamic response mechanism of large-scale granite earthquake landslides, it is important to develop and prepare granite similar material for shaking table model test. In this paper, iron ore powder, quartz sand, and barite powder were selected as aggregates, gypsum as adjusting material and rosin alcohol solution as binder. The orthogonal test with 4 factors and 5 levels was designed, and the range analysis and multiple linear regression fitting were performed on the test results. On this basis, the influences of various factors on the physical and mechanical properties of granite similar material and the empirical equation of the similar material proportion were obtained. The results show that the density of granite similar material increases with the increase in the ratio of iron powder and barite powder in aggregate. With the increase of binder concentration, the compressive strength, elastic modulus, and cohesion of granite similar material significantly increase. With the increase of gypsum content, the density, compressive strength, and internal friction angle all decrease. The empirical equation of similar material proportion obtained from the test can provide a reference for the preparation of similar granite material or other similar materials. |
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| Keywords: | large-scale shaking table test similar material of granite orthogonal design |
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