Standard Test Method for Load Controlled Cyclic Triaxial Response of Soil

Importancia y uso:

5.1 Cyclic triaxial test results are used for evaluating the ability of soil to resist the shear stresses induced in a soil mass due to earthquakes or other cyclic loadings.

5.1.1 Cyclic triaxial tests may be performed at different values of effective confining pressure on isotropically or anisotropically consolidated specimens to provide data required for estimating the cyclic response of the soil.

5.1.2 Cyclic triaxial tests may be performed at a single effective confining pressure, usually equal to 100 kPa [14.5 lbf/in.²], or alternate pressures to compare cyclic response results for a particular soil type with that of other soils (2).

5.2 The cyclic triaxial test is a commonly used technique for determining cyclic soil response.

5.3 Cyclic response depends upon many factors, including density, effective confining pressure, applied cyclic stress, stress history, soil fabric, age of soil deposit, specimen reconstitution method, and the frequency, uniformity, and shape of the cyclic waveform. Thus, close attention must be given to testing details and equipment.

Note 1: The quality of the result produced by this standard is dependent on the competence of the personnel performing it and the suitability of the equipment and facility used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some, but not all, of those factors.

Subcomité:

D18.09

Volúmen:

04.08

Palabras clave:

cohesionless soils; consolidated-undrained tests; cyclic response; laboratory tests; triaxial tests;