KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
권호 표지

Static Test of Precast Concrete Barrier II. Analysis of the Measured Data

프리캐스트 콘크리트 방호벽의 정적 실험 II. 계측값 분석

Jeon, Se-Jin;Choi, Myoung-Sung;Kim, Young-Jin
전세진;최명성;김영진

  • Published : 20071100

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Abstract

A new type of precast concrete barrier system was developed and static tests were performed with five sets of specimens with different test variables to verify the structural performance against the car crash. In the preceding companion paper, failure mode and load-carrying capacity were mainly investigated. In this paper, structural responses represented by displacements and strains were measured and analyzed to further assess the structural behavior. When the shear key system was used with an epoxy applied between barriers, integrity of the barriers was maintained up to the ultimate state. The proposed joint system of the barrier and deck can efficiently transfer the load applied in the barrier into the deck. A crucial factor that affects the failure mode and ultimate load of the barrier is a horizontal crack and yielding of the vertical reinforcements that occur by the flexure with respect to longitudinal direction at a vulnerable section with a decreased thickness. The specimens were designed so that stiffnesses of the barrier and deck are balanced and, as a result, responses of the deck were not dominant when compared with those of the barrier. Comparison with the results of finite element analyses shows that the proposed system has an integrity that can resist the car crash in an effective manner.

Keywords

References

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