|Table of Contents|

Frequency Variable Parameters Model and Design of Dynamic Foundations(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2008年01期
Page:
55-59
Research Field:
Publishing date:
2008-03-20

Info

Title:
Frequency Variable Parameters Model and Design of Dynamic Foundations
Author(s):
WANG Hong-wei;  CHEN Xiao;  LIU Bin;  ZHU Fu-sheng
School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, Liaoning, China
Keywords:
dynamic foundation;  frequency variable parameter;  half-space;  transient vibration
PACS:
TU311.3
DOI:
-
Abstract:
In order to improve the theoretical model of the present dynamic machine foundation design, the characteristics of mass-spring-damper model and half-space model theory were combined, and a frequency variable parameters model with more accuracy was advanced. Through computational deduction, the dynamic solutions of the concerned model were obtained, and the model features and parameter effects were further analyzed. Meanwhile, authors pointed out that the dynamic response of the system was underestimated in low frequency domain, while overestimated in high frequency domain by the present mass-spring-damper parameter fixing model. Considering frequency variable parameters model, there existed a little differential value between harmonic response frequency and corresponding external excitation frequency. At last, according to the shortage of original design code, a design scheme with big and light foundations for the dynamic machines was recommended. It provids some feasible references for modification and improvement of the design code.

References:

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Memo

Memo:
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Last Update: 2008-03-20