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Title |
Evaluation of Flexural Behavior of Walls Composited Using a Cast In Place (CIP) Pile and a Basement Wall
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Authors |
심재일(Jae-Il Sim) ; 문주현(Ju-Hyun Mun) ; 양근혁(Keun-Hyeok Yang) ; 이혜지(Hye-Ji Lee) |
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DOI |
https://doi.org/10.4334/JKCI.2024.36.6.561 |
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Keywords |
지하합성벽; 현장타설 말뚝; 전단연결재; 휨 거동 composite basement wall; cast in place pile; shear connector; flexural behavior |
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Abstract |
The objective of this study was to evaluate the flexural behavior of a composite wall comprising a cast-in-place (CIP) pile and a basement wall, connected using a socket-type shear connector (SSC). The main parameters investigated were the cross-sectional shape of the CIP pile, the type of tension reinforcement in the CIP pile, and the loading direction. A total of 12 composite basement walls were prepared and tested under monotonic 4-point loads. The test results showed that using SSC in the composite basement walls can achieve full composite action at the interface between the CIP pile and the basement wall. In addition, it was confirmed that a square cross-section with equivalent detailing exhibited flexural performance comparable to that of a circular cross-section. However, the AISC 360-16 standard, which is based on the concept of plastic stress distribution, was found to underestimate the maximum flexural moment of the composite basement walls using SSC. In particular, the installation of steel plates to replace H-shaped steel beams and deformed bars, which are commonly used in CIP piles, was effective in improving the ductility of the composite basement walls.
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