지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국지반공학회 International Journal of Geo-Engineering International Journal of Geo-Engineering 제4권 제3호
- 발행연도
- 2012.9
- 수록면
- 19 - 28 (10page)
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초록· 키워드
오류제보하기
In the recent years, there has been a move to shift the design approach from working stress design to load resistance factor design (LRFD) methods. With the increasing use of augered cast-in-place (ACIP) piles in new construction, it is important that proper resistance factors be developed for the LRFD method. This paper focuses upon the development of the ACIP pile resistance factors using the t-z model. The t-z model provides the ability to enhance the load test data and to interpret field data for loading conditions beyond those measured during test. Ten static load tests consisting of load-settlement and load transfer data for ACIP piles were analyzed using the t-z model. A series of hack-calculations were performed to enhance the static load test data, which were then analyzed to obtain resistance bias factors for the currently used ACIP pile design methods. In addition, the back-calculated t-z model parameters were compared to those predicted using correlations for standard field investigation data, including standard penetration test (SPT), cone penetration test (CPT) and effective stress of the ground, Subsequently, the resistance biases were then used to obtain the resistance factors based upon the First-Order Second-Moment (FOSM) method Although, the LRFD of AC1P piles can be performed using the obtained resistance factors, the current design methods arc found to predict the side and tip behavior inconsistently and, therefore, the need for improved methods for resistance factor calibration are suggested.
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