| 强夯加固机理及其环境影响的数值分析 |
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| 引用本文： | 蔡袁强,王大力,徐长节,陈超.强夯加固机理及其环境影响的数值分析[J].岩土力学,2005,26(Z1):159-162. |
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| 作者姓名： | 蔡袁强 王大力 徐长节 陈超 |
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| 作者单位： | 1. 浙江大学 岩土工程研究所，杭州 310027；2. 浙江省二轻集团公司，杭州 310009 |
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| 基金项目： | 浙江省城乡建设厅建设新技术、新产品研制和推广项目，浙江省建设厅资助项目(No.200106)，霍英东优秀青年教师资助项目(No.81067)。 |
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| 摘 要： | 采用大变形几何非线性有限元法分析强夯加固机理及其振动对环境影响。在强夯计算模型中，引入P波阻尼和S波阻尼的概念来说明土体的材料阻尼特性，同时运用改进人工边界法来模拟波在人工边界上的传播。采用速度和加速度作为强夯振动对环境影响的评价标准，得出强夯的最小安全距离。隔振沟是一种有效的隔振方法，分析了隔振沟隔振效果的各种影响因素，对实际工程具有一定的参考价值。
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| 关 键 词： | 强夯 材料阻尼 人工边界 衰减 隔振 |
| 收稿时间： | 2005-01-14 |
Numerical analysis of dynamic compaction and environmental effect caused by the impacting vibration |
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| CAI Yuan-qiang,WANG Da-li,XU Chang-jie,CHEN Chao.Numerical analysis of dynamic compaction and environmental effect caused by the impacting vibration[J].Rock and Soil Mechanics,2005,26(Z1):159-162. |
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| Authors: | CAI Yuan-qiang WANG Da-li XU Chang-jie CHEN Chao |
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| Institution: | 1. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China;
2. Zhejiang Provincial Second Light Industry Corporation, Hangzhou 310009, China |
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| Abstract: | The geometric nonlinear finite element method is used to analyze the impact mechanism of dynamic compaction. Damping of P wave and S wave are introduced to illuminate the material characters of the soil in the model. The improved artificial boundary conditions are applied to simulate wave propagation at the boundary. Two evaluation criterions (velocity criterion and acceleration criterion) are used to estimate the vibration influence to obtain the safe vibration range. The trench is an effective method of vibration isolation; and various influencing factors of trench are studied to give valuable reference for the engineering practice. |
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| Keywords: | dynamic consolidation material damping artificial boundary attenuation vibration isolation |
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