Journal of Korean Association for Spatial Structures (한국공간구조학회논문집)

Korean Association for Spatial Structures (한국공간구조학회)
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Shear Performance Evaluation at the Interface Between CLT and Concrete

구조용 집성판(CLT)-콘크리트 경계면의 전단성능 평가

  • Park, Keum-Sung (Korea Institute of Civil Engineering and Building Technology)
  • Received : 2021.06.03
  • Accepted : 2021.07.08
  • Published : 2021.09.15
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Abstract

An experimental study was carried out to evaluate the shear performance at the interface composed of structural laminates and concrete. The main variables are the number of CLT layers and the shape of the shear connector. The number of CLT layers consisted of 3 and 5 layers. A total of 6 test specimens for shear performance evaluation were prepared in the form of a shear connector, a direct screw type and a vertically embedded type. As a result of the experiment, similar behavior was shown in all specimens, regardless of the number of layers, including direct screw type (SC series) and vertically embedded type (VE series). The behavior at the joint surface was damaged due to the occurrence of initial shear cracks, expansion of shear groove cracks, and splaying at the interface after the maximum load.After the maximum load, the shear strength decreased gradually due to the effect of the shear connector. It can be seen that the shear strength of all specimens is determined by shear and compression stress failure of concrete at the interface of the notch joint.

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Acknowledgement

이 연구는 국토교통과학기술진흥원의 주거환경연구사업(No. 20RERP-B082884-07)과 도시건축연구사업(No. 20AUDP-B146511-03)의 지원으로 수행되었습니다.

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