|Table of Contents|

Comparison of Soil Dynamic Property Identification Method(PDF)

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

Issue:
2009年02期
Page:
32-
Research Field:
Publishing date:
2009-06-20

Info

Title:
Comparison of Soil Dynamic Property Identification Method
Author(s):
CHEN Jun1;  ZHAO Guan-yu2;  QI Xiao-yu2;  SHI Xiao-jun2
1. State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China; 2. Department of Building Engineering, Tongji University, Shanghai 200092, China
Keywords:
soil dynamic property;  shaking table test;  stochastic subspace iteration;  empirical mode decomposition;  frequency domain decomposition method
PACS:
TU411.8
DOI:
-
Abstract:
Combining free soil shaking table test, the predominant frequency of silty clay and its damping ratio used in series of shaking table test were identified by three commonly used methods, i.e. the stochastic subspace identification(SSI)method, frequency domain decomposition(FDD)method and empirical mode decomposition plus Hilbert transform(EMD+HT)method. The applicabilities of the three methods were verified and identification results were discussed in items of effect of input type, different soil depths and selection of calculating parameters concerning large damping ratio cases. The results show that the three methods are applicable for random excitation and small damping ratio cases; only empirical mode decomposition plus Hilbert transform method can produce reasonable results when soil predominant frequency and damping ratios are coupled with vibration process or subjected to strong earthquake.

References:

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Last Update: 2009-06-20