[1]倪富健,成晟,顾兴宇,等.路面结构的动态谱元分析[J].东南大学学报(自然科学版),2010,40(3):575-580.[doi:10.3969/j.issn.1001-0505.2010.03.027]
 Ni Fujian,Cheng Sheng,Gu Xingyu,et al.Spectral element analysis of dynamic pavement structure response[J].Journal of Southeast University (Natural Science Edition),2010,40(3):575-580.[doi:10.3969/j.issn.1001-0505.2010.03.027]
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路面结构的动态谱元分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第3期
页码:
575-580
栏目:
交通运输工程
出版日期:
2010-05-20

文章信息/Info

Title:
Spectral element analysis of dynamic pavement structure response
作者:
倪富健1 成晟2 顾兴宇1 马翔1
1 东南大学交通学院,南京 210096; 2 泰州市公路管理处, 泰州 225300
Author(s):
Ni Fujian1 Cheng Sheng2 Gu Xingyu1 Ma Xiang1
1 School of Transportation, Southeast University, Nanjing 210096, China
2 Taizhou Highway Management Department, Taizhou 225300, China
关键词:
道路工程 动态响应 层刚度矩阵 波动 谱元法 黏弹性
Keywords:
road engineering dynamic response layer stiffness matrix wave approach spectral element method viscoelastic
分类号:
U416.01
DOI:
10.3969/j.issn.1001-0505.2010.03.027
摘要:
结合层单元刚度矩阵和有限单元法,基于快速傅里叶变换和傅里叶-贝塞尔理论,根据层间连续和光滑2种接触状态分别进行系统矩阵组装,推导出了一种精确性和鲁棒性很好的谱元计算方法,可以对轴对称层状体系的动态行为进行分析,并开发了计算程序.从两方面对该算法的准确性进行了验证:静态过程与BISAR3进行比较; 动态计算结果直接与实测数据比较.该方法计算速度快,能够精确计算路面结构的动态响应,有广泛的工程应用价值.由于谱元法在频率-波数空间内进行运算,因此还可方便导入材料黏弹性模型,以考察结构的流变属性.
Abstract:
Combining a layer stiffness matrix and a spectral element in the analysis of the dynamic behavior of axially symmetric multi-layered media, an accurate and computationally robust algorithm for solving dynamic problems is developed, based on Fourier-Bessel theory and the fast Fourier transform. When assembling the system stiffness matrix, the interface bonding conditions between layers are also considered. Numerical implementation is presented. The accuracy of the spectral element method is verified by comparing it with what of BISAR3 for quasi-static processes, when the pulse duration is long enough, and with the measured FWD(falling weight deflectmeter)deflections data for dynamic processes. Because of the evaluation of system response in frequency domain, this approach allows for adjustment of frequency dependent properties. The method is fast and can accurately calculate the dynamic response of pavement structure, there is a wide range of engineering applications. As the spectral element method in the frequency-wave number space for operation, so can easily import the viscoelastic material model to study the rheological properties of the structure.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 倪富健(1968—),男,博士,教授,博士生导师,nifujian@gmail.com.
引文格式: 倪富健,成晟,顾兴宇,等.路面结构的动态谱元分析[J].东南大学学报:自然科学版,2010,40(3):575-580. [doi:10.3969/j.issn.1001-0505.2010.03.027]
更新日期/Last Update: 2010-05-20