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http://dx.doi.org/10.7843/kgs.2019.35.11.75

A Study(VI) on the Development of Charts and Equations Predicting Bearing Capacity for Prebored PHC Piles Socketed into Weathered Rock through Sandy Soil Layers - Axial Compressive Bearing Capacity Prediction Table Solution or Chart Solution -  

Nam, Moon S. (Korea Expressway Corp. Research Institute)
Kwon, Oh-Kyun (Dept. of Civil Engrg., Keimyung Univ.)
Park, Mincheol (Seoul Institute of Technology)
Lee, Chang Uk (Dept. of Civil Engrg. in Graduate School, Kyungsung Univ.)
Choi, Yongkyu (Dept. of Civil, Environmental and Urban Engrg., Kyungsung Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.35, no.11, 2019 , pp. 75-95 More about this Journal
Abstract
The numerical analysis on PHC piles socketed into weathered rocks through sandy soil layers was conducted to propose the table solution or the chart solution to obtain the mobilization capacity. The mobilization capacity was determined at the settlement of 5% pile diameter and applied a safety factor of 3.0. In order to utilize the excellent compressive strength of the PHC pile effectively, it is recommended that the allowable bearing capacity of ground would be designed to be more than the long-term allowable compressive pile load. A procedure for determining an allowable pile capacity for PHC piles socketed into weathered rocks through sandy soil layers is given by the sum of the allowable skin friction of the sandy soil layer and the weathered rock layer and the allowable end bearing capacity of the weathered rock layer. The design efficiency of the PHC pile is about 85% at the reasonable design stage in the verification of the newly proposed method. Thus, long-term allowable compressive load (Pall) level of PHC piles can be utilized in the optimal design stage.
Keywords
Prebored PHC Piles; The table solution or the chart solution; Mobilized pile capacity; The reasonable design stage; The optimal design stage;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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