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Safety and Applicability Evaluation of Railway Bridges in China 被引量:1

Safety and Applicability Evaluation of Railway Bridges in China
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摘要 There are more than eight different design standards in use for the existing railway bridges in China, which have different applicabilities for bridges built in different periods. In this paper, the design load standards in different periods are introduced and compared; The working status of the railway is investigated. According to the developing trend of separating passenger and freight transports, by comparing the computed results of the bridge effect and the fatigue cumulative damage, the applicabilities of bearing capacity and fatigue are analyzed for existing bridges. The results indicate that the bearing capacities of 99% existing bridges are suitable for the demand of 26.5 t (axle-weight) freight trains. However, for culverts, bridges with spans less than 20 m, longitudinal and transverse beams of through bridges, suspenders of truss bridges and other locally-stressed members should be evaluated and reinforced due to the increasing axle-weight.
出处 《Journal of Civil Engineering and Architecture》 2010年第1期53-59,共7页 土木工程与建筑(英文版)
关键词 Railway bridge SAFETY FATIGUE passenger-freight separation. 既有铁路桥梁 适用性 中国 安全性 疲劳累积损伤 评价 设计标准 承载能力
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  • 1X. Z. Chen, Q. S. Wang, L. L. Zhang, Z. T. Ke and D. Zhang, Research on Dynamic Factors of Simply Supported Concrete and Steel Beams, China Academy of Railway Sciences, 1990.
  • 2L. Wang and G. A. Sun, Investigation and Statistics Analysis of Nationwide Train Compositions, China Academy of Railway Sciences, 2008.
  • 3British Standard Institution, Steel Bridge, Concrete Bridge and Composite Beam (Volume I), Southwest Jiaotong University Press, Pt. 1-4, 1987, pp. 1978-1982.

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