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http://dx.doi.org/10.14190/JRCR.2021.9.2.208

Evaluation on the Structural Performance and Economics of Ultra-high Performance Concrete Precast Bridges Considering the Construction Environment in North Korea  

Kim, Kyoung-Chul (Korea Institute of Construction Technology)
Koh, Kyung-Taek (Korea Institute of Construction Technology)
Son, Min-Su (Korea Institute of Construction Technology)
Ryu, Gum-Sung (Korea Institute of Construction Technology)
Kang, Jae-Yoon (Korea Institute of Construction Technology)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.9, no.2, 2021 , pp. 208-215 More about this Journal
Abstract
In this study, a customiz ed bridge system was developed for North Korea application. For the application of North Korea, the customized bridge system design, fabrication, and construction performance evaluation were performed using ultra-high performance concrete a compressive strength 120MPa or more and a direct tensile strength 7MPa or more. The comparison of the North Korean truck luggage load(30, 40, 55) and the Korean standard KL-510 load showed that cross-section increased as the load increased. Furthermore, a bridge with a span length of 30m was fabricated with ultra-high performance concrete for the construction performance evaluation. The evaluation of the load condition analysis was performed by a flexural test. The results showed that a bridge with a span length of 30m secured about 167% of sectional performance under initial cracking load conditions and about 134% of load bearing capacity under ultimate load conditions. As a result of economic analysis, the customized bridge system using ultra-high-performance concrete was less than about 11% of the upper construction cost compared to the steel composite girder bridge. Therefore, these results suggest that the price competitiveness can be secured when applying the ultra-high-performance concrete long-span bridge developed through this study.
Keywords
Ultra-high-performance concrete; Precast concret; Flexural performance; Long-span bridge; North Korea customization;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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