Fig. 1. Schematic diagram of dynamic load tests (Park, 2017)
Fig. 2. Screen for pile model
Fig. 3. Structural detail and picture of PCFT piles
Fig. 4. Concrete pouring inside steel pipe using tremie pipe
Fig. 5. Hybrid composite piles using PCFT piles
Fig. 7. PCFT hybrid composite piles connected by bolting joint
Fig. 8. Dynamic load test for PCFT hybrid composite piles
Fig. 9. Force wave up-time curves for test piles
Fig. 10. CAPWAP analysis for PCFT hybrid composite pile when ignoring PM
Fig. 11. CAPWAP analysis for PCFT hybrid composite pile when applying change of pile impedance
Fig. 12. CAPWAP analysis for PCFT hybrid composite pile when applying only PM
Fig. 13. CAPWAP analysis for HCP when applying only PM
Fig. 6. Boring log and SPT results at test site
Table 1. Variation of allowable base load capacity and MQ with CAPWAP analysis condition
References
- Goble, G. G., Rausche, F. and Likins, G. E. (1980), The analysis of pile driving - A state-of-the-art, Proc. of the Int. Seminar on the Application of Stress-wave Theory on Piles, Blakema, Stockholm, pp. 131-161.
- Hyun, J. W., Bang, J. W., Lee, S. S. and Kim Y. Y. (2012), Shear strength enhancement of hollow PHC pile reinforced with infilled concrete and shear reinforcement, Journal of the Korea Concrete Institute, Vol. 24, No. 1, pp. 71-78 (In Korean). https://doi.org/10.4334/JKCI.2012.24.1.071
- KS F 2591 (2014), Method of Dynamic pile load test methods (In Korean).
- Paik, K. H. (2018), Strength characteristics of hollow prestressed concrete filled steel tube piles for hybrid composite piles, J. of the Korean Geotechnical Society, Vol. 34, No. 1, pp. 37-46 (In Korean). https://doi.org/10.7843/KGS.2018.34.1.37
- Park, J. B. (2017), A comparative study on the bearing capacity of dynamic load test and static load test of PHC bored Pile, Journal of the Korean Geo-Environmental Society, Vol. 18, No. 9, pp. 19-31 (In Korean).
- PDI (2009), PDA-W manual of operation - For use with PDA models PAK, PAL and PAX, OHIO, pp. 1-10-1-11.