| 倾斜入射快纵波在饱和土中单个圆柱体周围的散射 |
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| 引用本文： | 丁光亚,徐长节,王鹏. 倾斜入射快纵波在饱和土中单个圆柱体周围的散射[J]. 地震工程与工程振动, 2010, 30(3) |
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| 作者姓名： | 丁光亚 徐长节 王鹏 |
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| 作者单位： | 1. 温州大学,建筑与土木工程学院,浙江,温州,325035
2. 浙江大学,软弱土与环境土工教育部重点实验室,浙江,杭州,310027 |
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| 基金项目： | 国家自然科学基金，建设部科技计划资助项目，温州市科技计划资助项目 |
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| 摘 要： | 在Biot饱和土波动理论的基础上,采用波函数展开法,研究了饱和土体中单个圆柱体对倾斜入射PI波的散射特性,计算了背向散射谱和总散射截面积。结果表明,饱和土体中PI波倾斜入射时,随着倾斜入射角的增大,总散射截面积在减小,产生的散射波主要以PI波和SV波为主;随着饱和土体渗透系数的减小,PI波、PⅡ波和SV波背向散射谱平均幅值均呈增大趋势,但PI波背向散射谱幅值变化程度较小。
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| 关 键 词： | 饱和土 圆柱体 倾斜入射 快纵波 散射 |
Scattering of obliquely incident fast longitudinal waves around a cylinder in saturated soil |
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| DING Guangya,XU Changjie,WANG Peng. Scattering of obliquely incident fast longitudinal waves around a cylinder in saturated soil[J]. Earthquake Engineering and Engineering Vibration, 2010, 30(3) |
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| Authors: | DING Guangya XU Changjie WANG Peng |
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| Affiliation: | DING Guangya1,XU Changjie2,WANG Peng2(1.College of Architecture and Civil Engineering,Wenzhou University,Wenzhou 325035,China,2.MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering,Zhejiang University,Hangzhou 310027,China) |
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| Abstract: | On the basis of Biot's dynamic theory,the scattering of obliquely incident PI-wave around a cylinder in saturated soil was investigated by using wave function expansion technique,and the backscattering spectrum and the total scattering cross section of the cylinder were calculated.The numerical results show that when the obliquely incident wave is PI-wave,the total scattering cross section decreases with the increase of obliquely incident angle,and the scattered waves produced by the cylinder are just PI-wa... |
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| Keywords: | saturated soil cylinder obliquely incident fast longitudinal wave scattering |
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