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http://dx.doi.org/10.14481/jkges.2019.20.3.31

Estimation of Vertical Load Capacity of PCFT Hybrid Composite Piles Using Dynamic Load Tests  

Park, Nowon (Department of Civil Engineering, University of Seoul)
Paik, Kyuho (Department of Civil Engineering, Catholic Kwandong University)
Publication Information
Journal of the Korean GEO-environmental Society / v.20, no.3, 2019 , pp. 31-38 More about this Journal
Abstract
To determine the optimum dynamic load test analysis for PCFT (Prestressed Concrete Filled steel Tube) hybrid composite piles that PCFT piles are connected to the top of PHC piles, the dynamic load tests and CAPWAP analyses were performed on two hybrid composite piles with steel pipe and PCFT piles as upper piles. The results of the dynamic load tests and CAPWAP analyses showed that the particle velocity measured in PCFT hybrid composite piles was equal to the wave speed of PHC piles when the strain gauges and accelerometers are attached to the surface of inner composite PHC pile after removing the steel pipe in the upper PCFT pile. In addition, when assuming that the material of that upper PCFT pile was the same as that of the lower PHC pile and the cross-sectional area of the steel pipe in upper PCFT pile was converted to that for concrete through the pile model (PM) in CAPWAP analysis, the accuracy of the CAPWAP analysis result for PCFT hybrid composite piles was very high.
Keywords
Prestressed concrete filled steel tube pile; Hybrid composite pile; Dynamic pile load test; Field test; CAPWAP analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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