Reliability-Based Safety and Capacity Evaluation of High-Speed Railroad Bridges

신뢰성에 기초한 고속철도 교량의 안전도 및 내하력평가

  • 조효남 (한양대학교 토목환경공학과) ;
  • 곽계환 (한양대학교 토목환경공학과)
  • Published : 1997.09.01

Abstract

In Korea, the construction of the first high-speed railroad on the Seoul-Pusan Corridor has already started 3 years ago, in the paper, an attempt is made to develop reliability-based safety and capacity evaluation models for the computer-aided maintenance of the high-speed railroad bridges. The strength limit state models of PC railroad bridges for reliability analysis encompass both the single failure mode such as bending or shear strength and the combined interaction equations which simultaneously take into account flexures, shear and torsion. Then, the actual load carrying capacity and the realistic safety of bridges are evaluated using the system reliability-based equivalent strength, and the results are compared with those of the element reliability based or conventional methods. It is concluded that the proposed models may be appropriately applied in practice for the realistic assessment of safety and capacity of high-speed railroad bridges.

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