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Analysis of Piled Piers Considering Riverbed Scouring  

Jeong, Sang-Seom (Member, Associate Professor, Dept. of Civil Engrg., Yonsei Univ.)
Suh, Jung-Ju (Member, Ph.D student, Dept. of Civil., Yonsei Univ.)
Won, Jin-Oh (Member, Ph.D student, Dept. of Civil., Yonsei Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.18, no.3, 2002 , pp. 43-50 More about this Journal
Abstract
This paper describes a simplified numerical procedure for analyzing the response of bridge pier foundations due to riverbed scouring. A computationally efficient algorithm to analyze the behavior of a pile group is proposed by considering soil-pile, pile-cap, and pile-fluid interactions. The complex phenomenon of the pile-soil interaction is modeled by discrete nonlinear soil springs (p-y, t-z and q-z curves). The pile-cap interaction is considered by geometric configuration of the piles in a group and connectivity conditions between piles and the cap. The pile-fluid interaction is incorporated into the procedure by reducing the stiffness of the soil-pile reactions as a result of nonlinearity and degradation of the soil stiffness with river bridge scouring. Through the numerical study, it is shown that the maximum bending moment increases with increasing scour depth. Thus it is desirable to check the stability elf pile groups based on soil-pile and pile-cap interactions by considering scouring depth in the riverbed.
Keywords
Pile-cap interaction; Pile group; Pile-soil interaction; Scouring; Soil stiffness;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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