16. E. Hoek and E. T. Brown (1980) introduced the empirical criterion of failure for rocks: 01.p qu where m and s are constants; = qu 1/2 - (m 0 ³ + s)' qu rock mass qu rock substance/ (a) Compare this with Equation 3.15 for the case m = 0 and s = 1. (b) Hoek and Brown, in studying many sets of data, found the following approximate values: m = 7 for carbonate rocks, m = 10 for argillaceous rocks, m= 15 for sandstone and quartzite, m = 17 for volcanic rocks, and m = 25 for granitic and other intrusive rocks. Compare the peak compressive strengths as a function of confining pressure for a marble, a rhyolite, and a granite, all having qu = 100 MPa. What is the physical meaning of parameter m?

16. E. Hoek and E. T. Brown (1980) introduced the empirical criterion of failure for rocks: 01.p qu where m and s are constants; = qu 1/2 - (m 0 ³ + s)' qu rock mass qu rock substance/ (a) Compare this with Equation 3.15 for the case m = 0 and s = 1. (b) Hoek and Brown, in studying many sets of data, found the following approximate values: m = 7 for carbonate rocks, m = 10 for argillaceous rocks, m= 15 for sandstone and quartzite, m = 17 for volcanic rocks, and m = 25 for granitic and other intrusive rocks. Compare the peak compressive strengths as a function of confining pressure for a marble, a rhyolite, and a granite, all having qu = 100 MPa. What is the physical meaning of parameter m?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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