黄土地区某铁路专用线路基动力响应规律
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王瑞, 胡志平, 殷珂, 马甲宽, 任翔
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Dynamic Responses Law of Subgrade of a Special Railway Line in Loess Region
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WANG Rui, HU Zhiping, YIN Ke, MA Jiakuan, REN Xiang
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表1 模型土体参数
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Tab.1 Soil parameters of finite model
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土层 | 厚度/ m | 密度/ (kg·m-3) | 模量/ MPa | 阻尼比 | 泊松比 | 基床表层(新建) | 0.7 | 1900 | 86.5 | 0.04 | 0.25 | 基床底层(新建) | 2.3 | 1850 | 75.0 | 0.04 | 0.25 | 路堤本体(新建) | 1.75 | 1750 | 50.0 | 0.04 | 0.25 | 场地填方体 | 7.0 | 1750 | 50.0 | 0.04 | 0.25 | 基床表层(既有) | 0.7 | 1900 | 86.5 | 0.04 | 0.25 | 基床底层(既有) | 2.3 | 1850 | 75.0 | 0.04 | 0.25 | 路堤本体(既有) | 4.7 | 1750 | 50.0 | 0.04 | 0.25 | 地基土层 | 10 | 1680 | 26.3 | 0.05 | 0.25 | 基岩 | 10.0 | 2000 | 126.0 | 0.02 | 0.32 |
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