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http://dx.doi.org/10.7843/kgs.2018.34.5.5

Analysis of Bearing Capacity and Safety Factor of Dynamic Load Test of Prebored and Precast Steel Pile  

Park, Jong-Jeon (Dept. of Civil and Environment Engrg., Yonsei Univ.)
Jeong, Sang-Seom (Dept. of Civil and Environment Engrg., Yonsei Univ.)
Park, Jeong-Sik (Dept. of Civil and Environment Engrg., Yonsei Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.34, no.5, 2018 , pp. 5-17 More about this Journal
Abstract
In this study, the static and dynamic load tests were carried out to propose the safety factor of steel prebored and precast piles in weathered rocks. The axial load tests have been conducted on test piles with nominal diameters of 0.508 and 0.457 m. The piles were subject to static loading tests (14 times) and dynamic loading tests (EOID 14times, Restrike 14times). The dynamic loading tests were first executed after the casting of test piles ((1) initial EOID test). (2)In the succeding 28 days from completion of construction, static load tests were performed and (3)final restrike tests were carried out after 15 days from the static test. As a result, the bearing capacity based on Davisson method was 15% higher than that of the restrike tests. The bearing capacity of the static load tests were larger than that of the dynamic tests. By comparing the safety factor through various loading tests, the safety factor of dynamic loading tests were suggested to be lowered to 1.75 from the conventional 2.0.
Keywords
Steel pile; Prebored and precast pile; Dynamic load test; Static load test; Safety factor; Bearing capacity;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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