Abstract
References
Information
The various support members such as ground anchor, cable and rock bolts have been developed and are also commonly being used in order to solve problems like subsidence, collapse and failure. The purpose of this study clarified a difference of a supporting effect between a new type of spiral bolt and a conventional type of rock bolt. A pull-out test was performed with different curing periods of grout each test in laboratory, where load, displacement and strain were measured to clarify characters of support members. The supporting effects of spiral and rock bolts was compared after inner, external pressure and shear stress were calculated from the data obtained by pull-out test. The result from the case with curing period 7days and 28days has a similar tendency. In spiral bolt lager displacement was observed compared to rock bolt. In addition, inner and external pressure of spiral bolt were smaller than those of rock bolt.
지반침하나 붕괴, 파괴등과 같은 문제들을 해결하기 위해 그라운드 앵커나 케이블 볼트, 록 볼트와같은 지보재들이 개발되어 사용되고 있다. 본 연구에서는 일반적으로 사용되고 있는 지보재인 록 볼트와 새로운형태의 지보재인 스파이럴 볼트 사이의 지보효과에 대해 규명하고자 한다. 지보재의 특성을 규명하기 위해 그라우트의 양생조건을 달리하여 실내인발시험을 수행하였고, 하중과 변위, 변형률을 측정하였다. 실내인발시험을통해 얻어진 data를 이용해 내부압과 구속압, 전단응력을 계산하여 스파이럴 볼트와 록 볼트의 지보 특성에대해 비교하였다. 양생기간 7일과 28일의 결과는 비슷한 경향을 보였고, 스파이럴 볼트가 록 볼트에 비해 변위가더 크게 발생하였다. 내부압과 구속압의 경우 스파이럴 볼트에 비해 록 볼트가 더 크게 나타났다.
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- Publisher :The Korean Society of Mineral and Energy Resources Engineers
- Publisher(Ko) :한국자원공학회
- Journal Title :Journal of the Korean Society for Geosystem Engineering
- Journal Title(Ko) :한국지구시스템공학회지
- Volume : 46
- No :6
- Pages :703-710
Journal of the Korean Society of Mineral and Energy Resources Engineers
