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author:

Xu, J.-C. (Xu, J.-C..) [1] | Jian, W.-B. (Jian, W.-B..) [2] | Shang, Y.-Q. (Shang, Y.-Q..) [3]

Indexed by:

Scopus PKU CSCD

Abstract:

A study of seismic failure mechanism of soft soil sites in Fuzhou is presented. The characteristics of frequency-spectrum structure and response of ground soils, including soft soils and the frequency of ground micro-tremor, were investigated. From the results, it is found that the site soft soil enlarges predominant period of ground micro-tremor to some degree, and the predominant period of ground micro-tremor has a close relationship with the stiffness of the foundation soils. The correlations among the predominant period of ground micro-tremor, the overburden thickness of soils, and the shear wave velocity of overburden, are established. These relations reveal that the predominant period of the ground micro-tremor is positively proportional to overburden thickness, but decreases with the increase of shear wave velocity. In addition, based on the completed measurements of the natural periods of the buildings in the city, using the empirical calculation methods, and approximate calculation methods applied in California, USA, the improved approximate calculation formulae are developed for natural periods of high-rise buildings. The results reveal the seismic failure mechanism in the abundant soft soil sites, and demonstrate the causes of potential seismic failures for some buildings.

Keyword:

Earthquake; Frature mechanism; Micro-tremor; Sand liquification; Soft Soil; Soil mechanics

Community:

  • [ 1 ] [Xu, J.-C.]Inst. of Disaster Prevention, Zhejiang Univ., Hangzhou 310027, China
  • [ 2 ] [Jian, W.-B.]Inst. of Geotechnical Eng., Fuzhou Univ., Fuzhou 350002, China
  • [ 3 ] [Shang, Y.-Q.]Inst. of Disaster Prevention, Zhejiang Univ., Hangzhou 310027, China

Reprint 's Address:

  • [Xu, J.-C.]Inst. of Disaster Prevention, Zhejiang Univ., Hangzhou 310027, China

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Source :

Chinese Journal of Rock Mechanics and Engineering

ISSN: 1000-6915

Year: 2005

Issue: 2

Volume: 24

Page: 313-319

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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