Analysis of dynamic response of inhomogeneous subgrade under moving loads

doi:10.16285/j.rsm.2015.07.026

IR > 土木工程学院

	Analysis of dynamic response of inhomogeneous subgrade under moving loads
	Zhou Feng-xi1,2 ; Cao Yong-chun 1; Zhao Wang-gang 1
	2015-07-10
发表期刊	Yantu Lixue/Rock and Soil Mechanics
ISSN	10007598
卷号	36 期号:7 页码:2027-2033
摘要	Based on the theory of linear elastodynamics, and combined with the coordinate transformation, the dynamic governing equations for a half-plane inhomogeneous subgrade are developed. The dynamic response of a two-dimensional inhomogeneous subgrade subjected to moving loads is analyzed based on a semi-analytical method. Using Fourier series expansion, and assuming the series form of response function, the analytical expressions of various physical quantities are developed for the inhomogeneous subgrade subjected to moving loads, in which the shear modulus can arbitrarily change with depth. Assuming the shear modulus has an exponential distribution with the thickness, a parametric study is presented to illustrate the influence of the foundation soil inhomogeneity and load moving velocity as well as shear modulus at subgrade surface on the dynamical response of foundation soils. The calculated results are compared with the responses of a homogeneous subgrade, showing that the vertical displacement of soil decreases with the increase of the shear modulus at the surface of subgrade and the inhomogeneous gradient index, and increases with the increase of the load moving velocity. Under a moving load, the dynamic responses of inhomogeneous subgrade are significantly different from that of homogeneous subgrade. ©, 2015, Academia Sinica. All right reserved.
关键词	Elastic moduli Fourier series Linear transformations Shear flow Shear strain Soils Velocity Analytical expressions Co-ordinate transformation Exponential distributions Fourier-series expansion Inhomogeneous subgrade Moving load Semi-analytical methods Vertical displacements
DOI	10.16285/j.rsm.2015.07.026
收录类别	EI ; ESCI
语种	中文
WOS研究方向	Engineering
WOS类目	Engineering, Geological
WOS记录号	WOS:000409671300026
出版者	Academia Sinica
EI入藏号	20153301165682
EI主题词	Dynamic response
EI分类号	483.1 Soils and Soil Mechanics - 631.1 Fluid Flow, General - 921.3 Mathematical Transformations - 931.1 Mechanics - 951 Materials Science
来源库	Compendex
分类代码	483.1 Soils and Soil Mechanics - 631.1 Fluid Flow, General - 921.3 Mathematical Transformations - 931.1 Mechanics - 951 Materials Science
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/112323
专题	土木工程学院
通讯作者	Zhou Feng-xi
作者单位	1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Gansu, Peoples R China; 2.Lanzhou Univ Technol, Minist Educ, Western Engn Res Ctr Disaster Mitigat Civil Engn, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Zhou Feng-xi,Cao Yong-chun,Zhao Wang-gang. Analysis of dynamic response of inhomogeneous subgrade under moving loads[J]. Yantu Lixue/Rock and Soil Mechanics,2015,36(7):2027-2033.
APA	Zhou Feng-xi,Cao Yong-chun,&Zhao Wang-gang.(2015).Analysis of dynamic response of inhomogeneous subgrade under moving loads.Yantu Lixue/Rock and Soil Mechanics,36(7),2027-2033.
MLA	Zhou Feng-xi,et al."Analysis of dynamic response of inhomogeneous subgrade under moving loads".Yantu Lixue/Rock and Soil Mechanics 36.7(2015):2027-2033.