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A Stability Analysis for Vehicle Impact in U-Channel Segmental Concrete Bridges  

Choi, Dong-Ho (한양대학교 건설환경공학과)
Na, Ho-Sung (한양대학교 건설환경공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.10, no.6, 2010 , pp. 17-25 More about this Journal
Abstract
This paper studied on stability of the U-channel segmental concrete bridge under vehicle-impact loads. The U-channel bridge has advantages in that it reduces an additional dead load and the edge beams role as a barrier. But it has a dangerous factor which collapses the bridge structure when the edge beams are ruptured. Therefore, it is necessary to verify behaviors of the bridge system under vehicle-impact loads. Static and dynamic vehicle impact simulations were carried out on the basis of AASHTO LRFD design specifications. In case of the static analysis, equivalent static loads specified in the AASHTO codes are loaded on the edge beams and in case of the dynamic analysis, FEM vehicle models are modeled by applying the dynamic test specifications of AASHTO codes. As a result, it is shown that U-channel bridge system has sufficient safety against static and dynamic impact loads specified in the AASHTO LRFD design specifications.
Keywords
U-channel segmental concrete bridge; Edge beam; Impact simulation; Structural Stability;
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Times Cited By KSCI : 1  (Citation Analysis)
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