펄스방전 그라운드 앵커의 확공특성 및 극한인발력에 관한 연구 = Expansion Ratio and Ultimate Load of Pulse-Discharge Bulbed Anchors

다국어 초록 (Multilingual Abstract)

The ground anchor is not usually used in soft clay and loose sand, because the pullout resistance of anchors can not be guaranteed. However, there is a method to increase the capacity of anchors using electric discharge geotechnical technologies, which are also known as pulse discharge and electric-spark technologies. The pulse-discharge anchor has a bulbed (or underreamed) bond length that is expanded by high voltage electrokinetic pulse energy. 24 anchors were installed in the weathered soil and sandy clay at the Geotechnical Experimentation Site at Sungkyunkwan University in Suwon, Korea. In this study, in order to define a relation between expansion rate of the anchor diameter and ultimate load, anchor load tests were carried out in accordance with testing procedures by AASHTO (AASHTO 1990) and FHWA (Weatheb 1998). And then several anchors were exhumed to measure the diameter of the pulse discharge anchors.

참고문헌 (Reference)

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2 김태훈, "펄스압에 의한 지반의 확공특성" 842-852, 2007

3 김성규, "압축형 그라운드 앵커의 하중전이에 관한 연구" 성균관 대학교 2000

4 Littlejohn, G. S., "Soil Anchors" 33-44, 1970

5 Briaud, J. L., "Should Grouted Anchors Have Short Tendon Bond Length?" ASCE 124 (124): 110-119, 1998

6 AASHTO, "Permanent Ground Anchor Specification In-situ Soil Improvement Technique" AASHTO 1990

7 Kim, Nak Kyung, "Performance of Tension and Compression Anchors in Weathered Soil" ASCE 129 (129): 1138-1150, 2003

8 Nak Kyung Kim, "Numerical simulation of ground anchors" 34 : 498-507, 2007

9 Kim,Nak kyung, "Load Transfer on Ground Anchors in Weathered Soil" 217-226, 2000

10 "Ground Anchors and Anchored Systems, FHWA-IF-99-015"

11 Littlejohn, G. S., "Design Estimation of the Ultimate Load-Holding Capacity of Ground Anchors" 67 (67): 131-154, 1980