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http://dx.doi.org/10.7843/kgs.2006.22.12.45

Behavior of Bond-type Shallow Anchors in Rock Masses ( I ) - Metamorphic Rock (gneiss) at Taean Test Site -  

Kim, Dae-Hong (KEPRI/KEPCO)
Lee, Dae-Soo (KEPRI/KEPCO)
Chun, Byung-Sik (Dept. of Civil Engrg., Hanyang Univ.)
Kim, Byung-Hong (Dept. of Civil Engrg., Hanyang Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.22, no.12, 2006 , pp. 45-55 More about this Journal
Abstract
This paper presents the results of full-scale uplift load tests performed on 30 passive anchors grouted to various lengths at Taean site in Korea. Various rock types were tested, ranging from highly weathered to sound gneiss. Rock anchors were installed over a wide range of rock types and qualities with a fixed anchored depth of $1{\sim}4m$. The majority of installations used SD4O-D51 no high grade steel rebar to induce rock failure prior to rod failure. In many tests, rock failure was reached and the ultimate loads were recorded along with observations of the shape and extent of the failure surface. The test results, the failure mechanisms as well as uplift capacities of rock anchors depend mostly on rock type and quality, embedded fixed length, and the strength of rebar. Based on test results, the main parameters governing the uplift capacity of the rock anchor system were determined.
Keywords
Bond type anchor; Failure mechanism; Rock anchor; Transmission tower foundation; Uplift capacity;
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