| 层状土中单桩竖向简谐动力响应的简化解析方法 |
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| 引用本文： | 栾茂田,孔德森,杨庆,韩丽娟. 层状土中单桩竖向简谐动力响应的简化解析方法[J]. 岩土力学, 2005, 26(3): 375-380 |
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| 作者姓名： | 栾茂田 孔德森 杨庆 韩丽娟 |
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| 作者单位： | 1. 大连理工大学 土木水利学院岩土工程研究所, 辽宁 大连 116024; 2. 大连理工大学 海岸和近海工程国家重点实验室, 辽宁 大连 116024; 3. 中国科学院武汉岩土力学研究所，湖北 武汉 430071；4.山东科技大学 土木建筑学院, 山东 青岛 266510 |
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| 基金项目： | 国家自然科学基金资助项目(No.50179006)，教育部跨世纪优秀人才培养计划研究基金资助项目(教技函[1999]2 号)，中国科学院武汉岩土力学研究所领域前沿基础研究基金项目(No.Q110305)。 |
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| 摘 要： | 运用土动力学和结构动力学原理，基于改进的Winkler地基梁模型，同时考虑桩周土的弱化效应和地基的成层非均质性，采用数理方程方法分别求解土与桩的振动微分方程，建立了竖向荷载作用下单桩简谐动力响应分析的计算力学模型和方法，并将所得结果与有限元计算结果进行了对比分析，验证了建议计算方法的合理性，通过对影响单桩竖向简谐动力响应的各相关参数进行变动参数比较分析，得到了各影响参数对单桩竖向简谐动力响应特性的一般影响规律。
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| 关 键 词： | 桩基 动力响应 非均质土层 弱化效应 简谐荷载 |
| 文章编号： | 1000-7598-(2005)03-0375-06 |
| 收稿时间： | 2003-12-02 |
| 修稿时间： | 2003-12-02 |
Simplified analytic method of vertical harmonic response of single pile embedded in layered soils |
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| LUAN Mao-tian,KONG De-sen,YANG Qing,HAN Li-juan. Simplified analytic method of vertical harmonic response of single pile embedded in layered soils[J]. Rock and Soil Mechanics, 2005, 26(3): 375-380 |
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| Authors: | LUAN Mao-tian KONG De-sen YANG Qing HAN Li-juan |
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| Affiliation: | 1. Institute of Geotechnical Engineering, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China; 2. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China; 3. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, wuhan 430071, China; 4.School of Civil and Architectural Engineering, Shandong University of Science and Technology, Qingdao 266510, China |
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| Abstract: | Based on a certain assumptions and the improved dynamic beam-on-Winkler’s foundation model, a simplified analytic method for computing the vertical dynamic harmonic response of single pile embedded in nonhomogeneous soil layers are established by using the principle of soil dynamics and structural dynamics. Both nonhomogeneity of soil strata and softening effect of soil layers around pile are simultaneously taken into account in the proposed computational method. The comparative study on a numerical example shows that the dynamic response of single pile computed by the simplified analytic method are relatively rational and can well agree with the numerical results obtained by the well-known finite element program. Finally the parametric studies are made to examine the effects of main relevant parameters on dynamic response of single pile embedded in nonhomogeneous layered soils. |
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| Keywords: | pile foundation dynamic response nonhomogeneous soil layers softening effect harmonic loading |
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