Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
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Pullout Resistance Characteristics of Strip-type Reinforcement based on Extensibility

신장성에 따른 띠형 보강재의 인발저항 특성

  • Lee, Kwang-Wu (Geotechnical Engineering, Research Division, Korea Institute of Construction Technology) ;
  • Cho, Sam-Deok (Geotechnical Engineering, Research Division, Korea Institute of Construction Technology) ;
  • Han, Jung-Geun (School of Civil and Environmental Engineering, Urban Design and Study, Chung-Ang Univ.) ;
  • Hong, Kikwon (School of Civil and Environmental Engineering, Urban Design and Study, Chung-Ang Univ.)
  • Received : 2012.12.04
  • Accepted : 2012.12.22
  • Published : 2012.12.30
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Abstract

This paper describes large scale pullout test results, in order to evaluate extensibility effect of strip-type reinforcement. The same test for ribbed steel strip reinforcement also is conducted to compare the friction resistance reinforcements' evaluation results. The pullout resistance of the ribbed steel strip reinforcement, which has a small cross sectional areas, was better than the friction resistance reinforcements' due to the bearing (passive) resistance. In case of friction resistance reinforcements, the pullout resistance of extensible reinforcement was better than inextensible reinforcement' even though they have a similar cross sectional areas.

본 연구에서는 띠형 형태의 보강재에 대하여 신장성에 따른 인발저항 특성을 평가하기 위하여, 강재스트립 및 띠형 섬유보강재를 대상으로 대형인발시험을 수행하였다. 또한 약간의 지지저항이 함께 발현되는 돌기형 강재스트립 보강재의 인발시험 결과를 마찰저항 보강재의 결과와 비교하였다. 단면적이 작은 돌기형 강재스트립 보강재는 지지저항에 기인하여 마찰저항만으로 인발저항이 발현되는 보강재에 비하여 우수한 인발저항 특성을 갖는 것으로 확인되었다. 그리고 단면적이 유사한 마찰저항 보강재의 경우에는 신장성 보강재가 비신장성 보강재에 비하여 우수한 인발저항 특성을 나타내는 것으로 평가되었다.

Keywords

References

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