Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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The Flexural Strength of Building Basement Wall Composited With Infilled Square Steel Tube Pile

충전각형강관 말뚝과 합성된 건물 지하벽의 휨강도 평가

  • Seo, Soo-Yeon (School of Architecture, Korea National University of Transportation) ;
  • Lee, Byunghee (School of Architecture, Korea National University of Transportation)
  • 서수연 (한국교통대학교 건축학부) ;
  • 이병희 (한국교통대학교 건축학부)
  • Received : 2022.07.15
  • Accepted : 2022.09.03
  • Published : 2022.09.30
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Abstract

In this study, a design method for estimating the flexural strength of a composite underground wall in which a filled square tube pile and a building basement wall were combined was presented. When earth pressure is applied to the composite basement wall, most of the earth pressure is transmitted to the building wall through low-rigidity piles not combined with the basement wall. Flexural deformation between the two members occurs due to the difference in the flexural stiffness between the not combined pile and the basement wall. Accordingly, since tensile stress as well as shear stress along the interface are generated in the shear connector. An flexural strength calculation process that could reflect the state of the interface of the joint was presented and compared with actual experimental results in this paper. As a result, when the composite ratio was less than 100%, it was found that the filled square steel tube pile and the RC wall behaved completely independent under the consideration of the joint opening. In this case, the sum of each independent flexural strength was found to be close to the actual experimental results rather than the flexural strength by composite action. The calculated moment showed good correspondence with the experimental results. Therefore, through this calculation process, it is possible to predict the flexural strength of the composite basement wall in case opening deformation occurs between the filled square tube pile and the RC wall.

Keywords

Acknowledgement

이 연구는 국토교통부 주거환경연구개발사업의 연구비지원 (22RERP-B099826-08)에 의해 수행되었음.

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