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http://dx.doi.org/10.7843/kgs.2016.32.12.45

An Experimental Study on the Stability of IER according to the Head Connection Method  

Yoo, Jae-Won (Dept. of Civil Engrg., Pusan National Univ.)
Im, Jong-Chul (Dept. of Civil Engrg., Pusan National Univ.)
Seo, Min-Su (Dept. of Civil Engrg., Pusan National Univ.)
Kim, Chang-Young (RIIT, Pusan National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.32, no.12, 2016 , pp. 45-57 More about this Journal
Abstract
The Inclined Earth Retaining Structure (IER) is the structure using an integrated system of both front supports and inclined back supports to increase the stability for excavation. The IER is a structurally stable temporary excavation method using the back supports restraining the lateral displacement of the front supports as stabilizing piles. The back supports connected to the front supports significantly reduce the earth pressure acting on both the front wall and the front supports by distributing it to the back supports in order to increase the structural stability. In this study, mechanical behaviors of IER according to the head connection type using fixed- or hinge-connection were found by performing numerical analysis and laboratory model tests in the sandy ground. The maximum lateral displacement of fixed-connection was 88% of that of hinge-connection in the numerical analysis. The lateral displacement of fixed-connection was 7% of that of hinge-connection in the laboratory model test results. Furthermore, the earth pressure of the fixed-connection was 67% of that of the hinge-connection in the shear-strain analysis results of the model ground.
Keywords
IER; Inclined Earth-Retaining Structure; Head connection method; fixed; Hinge;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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