Slip Failure Strength of Infilled Concrete with Reinforced PHC Pile by One-Cutting Method
원커팅 철근보강 PHC 말뚝의 속채움 콘크리트 부착파괴 성능

Young-Soo Chun, Young-Jong Sim, Jong-Bae Park
2011 LHI Journal of Land Housing and Urban Affairs  
Existing method protruding strands that are embedded in PHC pile to connect pile head and foundation slab shows poor constructibility. As this causes crack and damage in pile head and casualties often occurs in construction site during the work, alternative method called one-cutting method, in which pile above the ground surface and strands embedded in pile are completely cut and pile head is reinforced with rebar for connection with foundation slab, is currently adopted. However, the capacity
more » ... ever, the capacity of details for these methods are not mechanically proved. In this study, in order to suggest proper details of reinforcement for one-cutting method, failures due to lack of shear resistance between infilled concrete and PHC pile are analyzed through experiments and embedded depth with infilled concrete inside PHC pile is suggested. Assuming that slip failure strength is 0.4MPa, which is obtained from experiment conservatively, to have rebar yielded before slip failure, minimum depth of infilled concrete for PHC 450 and PHC 500, need to be 600mm above, and for PHC 600, 1,000mm above.
doi:10.5804/lhij.2011.2.4.553 fatcat:7dxqoixbcrb7dc6jduprig43iu