Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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Experimental Study on Pull-out Strength of Glued-in Rods Connection according to Adhesive

접착제에 따른 Glued-in Rod 접합부 인발성능에 관한 실험 연구

  • Park, Keum-Sung (Dept. of Building Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Oh, Keunyeong (Dept. of Building Research, Korea Institute of Civil Engineering and Building Technology)
  • Received : 2022.03.17
  • Accepted : 2022.04.12
  • Published : 2022.04.20
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Abstract

In this study, a pull-out test considering the adhesive type, embedded length, and direction of re-bar was conducted to evaluate the pull-out performance of glued-in rod joints using timber and adhesive produced in Korea. In the test, the specimens using liquid adhesive showed better pull-out performance, and the longer the embedded length of the re-bar, the higher the maximum tensile load by inducing the yield of the re-bar first. Through the test results, a glued-in rod joints design, which is advantageous to design the adhesive strength stronger than the yield strength of re-bar, was proposed, and a correction factor of 0.75 for the adhesive strength considering construction error was also suggested.

본 연구에서는 국내에서 생산되는 목재와 접착제를 활용한 Glued-in rod 접합부의 인발성능을 평가하고자 접착제의 종류, 철근의 매입깊이 및 매입방향을 고려한 인발성능 실험연구를 수행하였다. 실험결과, 액상형 접착제 사용 실험체가 더 우수한 인발성능을 보여주었으며, 철근의 매입깊이가 길어질수록 철근의 항복을 먼저 유도하여 높은 최대 인발하중을 보여주었다. 인발성능 실험결과를 통하여 철근의 항복강도보다 접착제의 부착강도를 더 강하게 설계하는 것이 유리한 Glued-in rod 접합부 설계식을 제안하였으며, 접착제의 부착강도의 시공오차를 고려한 보정계수 0.75 또한 제안하였다.

Keywords

Acknowledgement

This research was supported by a grant(No. 22AUDP-B146511-05) from the Urban Architecture Research Project funded by the Korea Agency for Infrastructure Technology Advancement(KAIA).

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