Accession Number : AD0652871

Title :   STRESS AND WAVE PATTERNS IN SOILS SUBJECTED TO DYNAMIC LOADS.

Descriptive Note : Research rept.,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s) : Bernhard,R. K.

Report Date : MAR 1967

Pagination or Media Count : 60

Abstract : The report is divided into four parts: Parts I and II cover investigations of the reliability of shear stress measurements in soils subjected to vibratory loads for biaxial and triaxial systems, respectively. Part I is a summary only (See SIP 21834 for detailed treatment). Part III is a study of three-dimensional 'principal' stress patterns produced in soil subjected to vibratory loads. Part IV is a theoretical analysis of some aspects of soil wave propagation in stratified soil. From the measurements of five shear stresses and one normal stress, the stress distribution of a triaxial system can be determined. In noncohesive soils triaxial stress fields due to vibratory loads can be determined by recording six independent stress components. Sinusoidal force excitation and impact excitation yield time-distance graphs which can be used to determine reflection and refraction techniques in stratified soils. (Author)

Descriptors :   (*SOILS, LOADS(FORCES)), STRESSES, MECHANICAL WAVES, DYNAMICS, SHEAR STRESSES, VIBRATION, PROPAGATION, IMPACT SHOCK, MECHANICAL PROPERTIES, SOIL MECHANICS

Subject Categories : Soil Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE