Standard Test Method for Determining In Situ Creep Characteristics of Rock

Importancia y uso:

5.1 Results of this test method are used to predict time-dependent deformation characteristics of a rock mass resulting from loading. It is a test that may be required depending on rock type or anticipated loads, or both.

5.2 This test method may be useful in structural design analysis where loading is applied over an extensive period.

5.3 This test method is normally performed at ambient temperature in the field, but equipment can be modified or substituted for operations at other temperatures.

5.4 Results of this test method may be useful in verifying laboratory creep data and structural mathematical modeling analyses.

5.5 Creep characteristics are determined under a nonuniform state of stress within the rock mass underneath the plate.

5.6 If during a field investigation, time-dependent characteristics are detected, then an in situ creep test shall be performed.

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 facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.

Subcomité:

D18.12

Referida por:

D0420-18

Volúmen:

04.08

Número ICS:

07.040 (Astronomy. Geodesy. Geography), 93.020 (Earthworks. Excavations. Foundation construction. Underground works)

Palabras clave:

adit; creep; deformation; displacement; in situ stress; loading tests; rigid plate loading method ;