| Hyperbola-Logistic模型预测列车引起的地面振动 |
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| 引用本文： | 陈功奇,高广运,蒋建平.Hyperbola-Logistic模型预测列车引起的地面振动[J].岩土力学,2013,34(Z1):313-317. |
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| 作者姓名： | 陈功奇 高广运 蒋建平 |
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| 作者单位： | 1. 同济大学 地下建筑与工程系，上海 200092；2. 同济大学 岩土及地下工程教育部重点实验室，上海 200092； 3. 上海海事大学 海洋环境与工程学院，上海 200135 |
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| 基金项目： | 国家自然科学基金资助（No.51178342）；上海市重点学科建设项目资助（No.B308） |
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| 摘 要： | 振动波在土介质中传播包含呈幂函数关系的几何衰减和呈指数函数关系的阻尼衰减两方面,针对振动波衰减的两种性质,提出Hyperbola-Logistic组合模型来描述振动波沿地表的传播。实例分析表明,Hyperbola-Logistic组合模型既可以用来预测地面位移、速度、加速度及振级的衰减,又可以预测高架桥段、路堤段及地下列车引起的地面振动。Hyperbola-Logistic组合模型具有较高的拟合精度,相关系数R均在0.95以上,决定系数R2均在0.90以上,它对振动衰减的拟合是可信的。通过对比,文中模型无论数值大小还是分布趋势,都能更好地预测列车引起的地面振动。
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| 关 键 词： | Hyperbola-Logistic组合模型 地面振动 振动衰减 移动列车 |
| 收稿时间： | 2012-09-27 |
Analysis of ground vibration of moving train by using Hyperbola-Logistic model |
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| CHEN Gong-qi,GAO Guang-yun,JIANG Jian-ping.Analysis of ground vibration of moving train by using Hyperbola-Logistic model[J].Rock and Soil Mechanics,2013,34(Z1):313-317. |
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| Authors: | CHEN Gong-qi GAO Guang-yun JIANG Jian-ping |
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| Institution: | 1.Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 3. College of Ocean Environment and Engineering, Shanghai Maritime University, Shanghai 200135, China |
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| Abstract: | The ground vibration attenuation consists of geometric attenuation in the form of power function and damping attenuation in the form of exponential function. The Hyperbola-Logistic model is proposed based on the two characteristics. Through case study, it is revealed that the Hyperbola-Logistic model can not only be used to predict ground displacement and attenuation of velocity, acceleration, and vibration level, but also be used to predict ground vibration caused by train passing the viaduct section, embankment section and underground section. The Hyperbola-Logistic model has a better fitting precision, whose correlation coefficient R is above 0.95 and determination coefficient R2 is above 0.90, which demonstrates its credibility to predict ground vibration attenuation. This model shows its advantage both in quantitative value and distribution trends after comparison, so as to provide it a better way to predict ground vibration caused by the train. |
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| Keywords: | Hyperbola-Logistic model ground vibration vibration attenuation moving train |
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