Fig. 1. Types of PHC piles for field test
Fig. 2. Plan of boreholes & field test piles, soil profiles
Fig. 3. Pullout of extension plate attached PHC pile after installation
Fig. 4. Defects examples of extension plate attched pile end
Fig. 5. Defects examples of extension plate attached PHC piles
Fig. 6. Measurement results of spliced bolts after pile installation
Fig. 7. Defects in bolts spliced PHC piles before and after installation
Fig. 8. Toe Beta in PDA test
Fig. 9. Break in pile end (Linkins and Rausche, 2014)
Fig. 10. Impedance for bolts spliced equipment used in field test
Fig. 11. Example of static compressive pile load tests for EXT-piles
Fig. 12. Example of bending moment test results
Table 1. Kinds of PHC piles specified in KS F 4306
Table 2. Field installation methods of extension plate attached PHC piles and bolts spliced PHC piles
Table 3. Test plan
Table 4. Pile driving equipment
Table 5. Numbering for the integrity test
Table 6. Summary of field test results
Table 7. The correct proof test method for the extension-plate attached PHC piles and the bolts spliced PHC piles
References
- Choi, Y. and Kim, M. H. (2018), Axial bearing characteristics of tip-transformed PHC piles through field tests, Journal of KGS, Vol.34, No.11, Nov. 2018, pp.107-119. (In Korean)
- Kim, M. H. (2018a), Safe installation method development project for extension plate attached PHC piles and bolt spliced PHC piles(Final report), Inje University industry academic cooperation foundation, pp.1-341. (In Korean)
- Kim, M. H. (2018b), Safe installation method deveropement project for extension plate attached PHC piles and bolt spliced PHC piles (Final report) - supplement, Inje University industry academic cooperation foundation, pp.A-1-1-A-13-48. (In Korean)
- Kim, M. H. and Choi, Y. (2018), Comparison of splices between bolts and welding spliced PHC piles, Journal of KGS, Vol.34, No.12, Nov. 2018. (In Korean) (in process)
- Likins, G. and Rausche, F. (2014), Pile Damage Prevention and Assessment Using Dynamic Monitoring and the Beta Method, Soil Behavior Fundamentals to Innovations in Geotechnical Engineering, ASCE Geo-Institute Geotechnical Special Publication No.233, pp. 428-442.
- Pile Test Corp. (2018), Dynamic pile load test report for second open PHC pile field test to check pile performance, Report No. KJ1805R01, 2018. 8, pp.1-32. (In Korean)