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http://dx.doi.org/10.12814/jkgss.2014.13.1.001

Design Improvement VE Case for Expansion of a Roadway over a Soft Soil  

Kim, Tae-Hyung (Department of Civil Engineering, Korea Maritime and Ocean Univ.)
Kim, Kook-Han (Naengjeong-Busan Construction Agency of the Korea Expressway Corporation)
Choi, Young-Chu (Naengjeong-Busan Construction Agency of the Korea Expressway Corporation)
Lee, Sa-Ik (Naengjeong-Busan Construction Agency of the Korea Expressway Corporation)
Ruy, Ji-Hoon (Department of Civil Engineering, Korea Maritime and Ocean Univ.)
Publication Information
Journal of the Korean Geosynthetics Society / v.13, no.1, 2014 , pp. 1-9 More about this Journal
Abstract
Expansion of a roadway on a soft ground can cause settlement of the existing road during embankment construction due to the consolidation characteristics of the soft soil. Many problems related to construction and maintenance, such as deterioration of the surface, decreased safety, and decreased structural stability, could affect the existing road. This scenario is especially true if the roadway foundation is a deep thick soft ground. Therefore, engineers should carefully select a proper design based on the characteristics of the soil layer. In this study, the expansion of the second branch of the Namhae Expressway was selected as the target site because this expressway has been constructing on a soft soil layer approximately 50 m thick. The original design was reviewed, problems were discussed and alternative was proposed through value engineering job plan phases: investigation, speculation, evaluation, development and presentation. In addition, the proposed alternative was evaluated on cost, function and value improvement. Compared to the original design, the proposed alternative saved cost and improved the function and overall value.
Keywords
Value engineering; Cost saving; Deep thick soft ground; Road expansion; Design;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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