Nested Lumped-Parameter Model for Foundation with Strongly Frequency-dependent Impedance

被引：18

作者：

Wang, Jue ^{[1
]}

Zhou, Ding ^{[1
]}

Liu, Weiqing ^{[1
]}

Wang, Shuguang ^{[1
]}

机构：

[1] Nanjing Tech Univ, Coll Civil Engn, Mail Box 8020-35,30 Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China

来源：

JOURNAL OF EARTHQUAKE ENGINEERING | 2016年 / 20卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Soil-Structure Interaction; Lumped-Parameter Model; Impedance Function; Flexibility Function; Complex Chebyshev Polynomial; Nested Division; SOIL-STRUCTURE INTERACTION; TIME-DOMAIN; HALF-SPACE; EMBEDDED FOUNDATIONS; POLYNOMIAL-FRACTION; DYNAMIC-RESPONSE; UNBOUNDED SOIL; PILE; SURFACE; REPRESENTATION;

D O I：

10.1080/13632469.2015.1109568

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A nested lumped-parameter model (LPM) consisting of frequency-independent springs and dashpots is proposed to represent the foundation-soil dynamic system with strongly frequency-dependent impedance in time domain. Due to the convergence and robustness of the complex Chebyshev polynomial, it is used to approximate the dynamic flexibility of the foundation by least-square curve-fitting technique. The comparisons with existing LPMs show that the present model can express the impedance by using a small number of elements and reduce oscillation of the solution appearing in simple polynomial approximations. Finally, several examples of foundations with irregular geometries are presented to show the application of nested LPMs.

引用

页码：975 / 991

页数：17

共 39 条

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