| 黏弹性地基上路面板在多轮荷载作用下的响应分析 |
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| 引用本文： | 姚海林,卢正,刘干斌,骆行文.黏弹性地基上路面板在多轮荷载作用下的响应分析[J].岩土力学,2009,30(2):367-373. |
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| 作者姓名： | 姚海林 卢正 刘干斌 骆行文 |
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| 作者单位： | 1. 中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室，武汉 430071；2. 宁波大学 建筑工程与环境学院，宁波 315211 |
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| 基金项目： | 西部交通建设科技项目，宁波市自然科学基金，中国科学院知识创新工程青年人才领域前沿项目 |
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| 摘 要： | 将内配纵向钢筋的路面视为置于黏弹性Winkler地基上的正交各向异性薄板，假设板在荷载运动方向上为无限长，车辆轮载被简化成包含自振频率的矩形均布移动荷载。应用三角级数及Fourier变换方法，得到了单轮荷载作用下路面竖向位移的表达式。在Fourier变换域内，利用叠加原理分别得到了前后双轮荷载和平行双轮荷载作用下路面竖向位移的解析解答。在此基础上，推导出连续配筋混凝土路面上受4轮车辆荷载作用时轮载附近位移的稳态响应表达式。利用数值积分方法对表达式进行Fourier逆变换，得到了数值结果，并全面地分析了多轮荷载作用时荷载间距、相位差、荷载速度、频率、地基阻尼以及配筋率对路面竖向位移响应的影响。
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| 关 键 词： | 黏弹性地基 多轮荷载 Fourier变换 前后双轮荷载 平行双轮荷载 |
| 收稿时间： | 2008-05-26 |
Dynamic response of pavement resting on viscoelastic foundation under multiple moving loads |
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| YAO Hai-lin,LU Zheng,LIU Gan-bin,LUO Xing-wen.Dynamic response of pavement resting on viscoelastic foundation under multiple moving loads[J].Rock and Soil Mechanics,2009,30(2):367-373. |
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| Authors: | YAO Hai-lin LU Zheng LIU Gan-bin LUO Xing-wen |
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| Institution: | 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Faculty of Civil, Construction and Environment Engineering, Ningbo University, Ningbo 315211, China |
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| Abstract: | The dynamic displacement response of continuously reinforced concrete pavement (CRCP) resting on viscoelastic Winkler foundation has been investigated when the system is subjected to multiple rectangular moving loads. The pavement is treated as an orthotropic plate and infinite in the moving direction. The theoretical solutions of the vertical displacement of CRCP under single moving load are obtained by using the trigonometric series and Fourier transform, and the superposition method is used to obtain the analytical solutions of CRCP under tandem-axle, dual-wheel and four-wheel loads in the transformed field domains of moving space. By employing fast fourier transform (FFT), the numerical results are derived and used to analyze the influence of the load velocity, frequency, viscous damping, reinforced ratio and the distance and phase between the multiple loads on the maximum deflection and on the deflection distributions. |
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| Keywords: | viscoelastic foundation multiple loads Fourier transform tandem-axle loads dual-wheel loads |
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