• Title/Summary/Keyword: Compressive strength test method of spun concrete

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Study(III) on the Development of Charts and Formulae Predicting Allowable Axial Bearing Capacity for Prebored PHC Pile Socketed into Weathered Rock through Sandy Soil Layer - The Proper Use of Long-term Allowable Compressive Load of PHC Piles by Analyzing Quality Test and Product Specifications Data - (사질토층을 지나 풍화암에 소켓된 매입 PHC말뚝에서 지반의 허용압축지지력 산정도표 및 산정공식 개발에 관한 연구(III) - 품질 성능 검사 자료 및 성능 제원 표 분석을 통한 PHC말뚝의 장기허용압축하중 성능의 올바른 활용 -)

  • Kim, Chae Min;Yun, Dae Hee;Lee, Chang Uk;Choi, Yongkyu
    • Journal of the Korean Geotechnical Society
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    • v.35 no.9
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    • pp.15-28
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    • 2019

  • Long-term allowable compressive Loads of PHC piles were analyzed based on qualification tests results by 17 small and medium PHC pile producing companies and product specifications by 6 major and 17 small and medium PHC pile producing companies. At the present stage, an average long-term allowable compressive load of PHC pile was designed at 70% level from current design data, and safety factor of 4.0 was applied to long-term allowable compressive loads of PHC pile despite of its excellent quality. Most quality standards of PHC pile are specified at KS F 4306. But compressive strength test method of spun concrete is specified at KS F 2454. As a result of analyzing quality test data supplied by each manufacturer, all quality test results showed higher performances than standard values. Therefore, it was considered that the capacity of PHC pile can be used up to the maximum allowable compressive load of PHC pile when PHC pile is designed.

  • https://doi.org/10.7843/kgs.2019.35.9.15 인용 PDF KSCI