1981
DOI: 10.1139/t81-061
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Side resistance rock sockets in sandstone, mudstone, and shale

Abstract: The fundamental parameters of rock strength, rock mass stiffness, and interface roughness that control the development of side shear in a rock socketed pile are discussed on the basis of results from laboratory model socket tests, constant stiffness direct shear tests, and instrumented prototype piles. Based on the understanding of these fundamental parameters and on a survey of socket field test results, an empirical design method is proposed for side shear only sockets. This design method considers both the … Show more

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Cited by 109 publications
(52 citation statements)
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“…The performance of rock-socketed piles at service loads is dependent predominantly on the shear stress developing at the interface between the concrete pile and the surrounding rock. Both practical experience and laboratory experiments have confirmed that sidewall roughness has a significant impact on the bearing capacity of rock-socketed piles [10,12,14,20,24,33,36,45].…”
Section: Introductionmentioning
confidence: 87%
“…The performance of rock-socketed piles at service loads is dependent predominantly on the shear stress developing at the interface between the concrete pile and the surrounding rock. Both practical experience and laboratory experiments have confirmed that sidewall roughness has a significant impact on the bearing capacity of rock-socketed piles [10,12,14,20,24,33,36,45].…”
Section: Introductionmentioning
confidence: 87%
“…Examples of these are found at the interface between the base of a dam or cast in situ pile rock sockets (Horvath, 1978;Rosenberg and Journeaux, 1976;Williams and Pells, 1981) and rock-steel interfaces such as rock bolts (Li and Håkansson, 1999) or H-steel piles driven into rock (Yu et al, 2013). These rock-steel interface examples result in constant normal stiffness (CNS) conditions, which lead to high normal stresses where the interface is subject to shear and constraint of dilation.…”
Section: Introductionmentioning
confidence: 99%
“…The models require numerical accuracy for parameters that are not typically evaluated in engineering. It is common to use parameters, such as rock cohesion (c), angle of friction (j) and uniaxial compressive strength (q u ), that are generated through Equation 1 and Table 1 (Horvath et al, 1980;Williams & Pells, 1981;Amir, 1986;Rowe & Armitage, 1987;Kulhawy & Phoon, 1993).…”
Section: Introductionmentioning
confidence: 99%