Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2008.10a
- /
- Pages.1090-1097
- /
- 2008
Reliability Analysis on the Decision Method of Lateral Flow of Foundation Piles for Abutment
교대 기초말뚝의 측방유동 판정식에 관한 신뢰성 해석
- Ahn, Jong-Pil (Dept. of Civil Engineering, Chosun University) ;
- Kim, Gyu-Deok (Seolim, Co., Ltd) ;
- Kim, Il-Goo (Graduate School, Dept. of Civil Engineering, Chosun University) ;
- Choi, Jin-Ho (Graduate School, Dept. of Civil Engineering, Chosun University)
- Published : 2008.10.10
Abstract
This study conducted the decision method of lateral flow in abutment structures founded on the soft soils and the reliability analysis on the foundation pile for abutment. On the basis of the results, this study proposed the reliability design model. Reliability analysis was conducted by applying second moment method, point estimation method, and expected total cost minimization to lateral movement index, lateral movement decision index, modified lateral movement decision index, and circular failure safety factor for the decision criteria of lateral flow. The reliability index by analysis method had a similar tendency each other. Point estimation method was found as a practical method in the aspect of convenience because it could conduct the analysis only by mean and standard deviation as well as the partial derivative on random variables was not necessary. Optimum reliability index and optimum safety according to increasing in failure factors and load ratio were analyzed and loads and resistance factors of the design criteria of optimum reliability were estimated. It presented rational design model which can consider construction level and stability and economical efficiency overall.
Keywords
- Lateral flow;
- Reliability analysis;
- Foundation pile;
- Second moment method;
- Point estimation method;
- Expected total cost minimization