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http://dx.doi.org/10.7843/kgs.2017.33.6.17

A Study on Bearing Capacity Reinforcement for PHC Pile Foundation Using Post-grouting  

Yoo, Min-Taek (High-speed Railroad Systems Research Center, Korea Railroad Research Institute)
Lee, Su-Hyung (Urban Railroad Research Team, Korea Railroad Research Institute)
Kim, Seok-Jung (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Choi, Yeong-Tae (High-speed Railroad Systems Research Center, Korea Railroad Research Institute)
Park, Jeongjun (High-speed Railroad Systems Research Center, Korea Railroad Research Institute)
Publication Information
Journal of the Korean Geotechnical Society / v.33, no.6, 2017 , pp. 17-25 More about this Journal
Abstract
In this research, post grouting methods were applied on PHC piles, and static load tests were conducted to confirm the effect of post grouting on bearing capacity enhancement of PHC piles. Grouting pressures of 1.9 MPa and 3.5 MPa were applied, and bearing capacities of grouted piles were compared with that of non-grouted pile. From the static load test results, the bearing capacities of grouted piles were about 3 times higher than that of non-grouted pile. In addition, the design efficiency (allowable bearing capacity/nominal bearing capacity) increased from 32% to 97% after post grouting, and the axial stiffness of piles also increased by about 1.3 times per grouting pressure.
Keywords
Post-grouting; Bearing capacity; Static load test; PHC pile;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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