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SW—Soil and Water: Mechanical Properties of Soils under Explosive Loading

✍ Scribed by L. Zhixiong; W. Yaohua; P. Junzheng

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
248 KB
Volume
80
Category
Article
ISSN
0021-8634

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✦ Synopsis

A series of stress histories were detected successfully by plate explosive impact, using piezoelectric crystal gauges pre-positioned at di!erent depths of clayey and sandy soils. The soil dynamic constitutive relation was obtained from the measured stress histories, by "tting a stress}depth}time surface. Results showed that the stress}strain curves had obvious stagnant-return phenomena, strain rate e!ect and waveform dissipation. These properties are important for correct evaluation of the dynamic behaviour of soils. Di!erent deformation characteristics of soils were found at di!erent depths. The surface layer displayed #uid elastoplastic property, while the middle and deeper layer displayed viscoplastic and elastic properties, respectively.

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