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首页> 外文会议>Composite Construction in Steel and Concrete VII >Design Temperature Load Spectrum for the Fatigue Verification of Composite Bridges with Integral Abutments
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Design Temperature Load Spectrum for the Fatigue Verification of Composite Bridges with Integral Abutments

机译：具有整体式桥台的复合桥疲劳验证的设计温度载荷谱

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摘要

For (low cycle) fatigue design of steel foundation piles of composite bridges with integral abutments, not only traffic loads but also temperature loads as well have to be considered. Regarding this temperature fatigue load case, no specific rules and recommendations are given in EN 1991-2 (Eurocode 1: Actions on structures - Part 2: Traffic loads on bridges). The current paper proposes a simplified temperature load spectrum, to be used for (low cycle) fatigue design of constructional steel members of composite bridges with integral abutments. Therefore, effective bridge temperature hydrographs (100 year period) are derived by means of FE-calculations for various locations based on actual weather data. They are converted into pile strain hydrographs, taking into consideration residual strains and plastic deformations. The calculations are verified by laboratory low cycle fatigue tests and monitoring results. Finally, a design temperature load spectrum is proposed, based on classified temperature variations.
机译：对于具有整体式桥台的复合桥钢基础桩的（低周）疲劳设计，不仅要考虑交通荷载，还要考虑温度荷载。关于这种温度疲劳载荷情况，EN 1991-2（欧洲规范1：结构上的作用-第2部分：桥梁上的交通载荷）未给出具体的规则和建议。本文提出了一种简化的温度载荷谱，可用于带有整体式基台的复合材料桥梁结构钢构件的（低周疲劳）设计。因此，根据实际天气数据，通过有限元计算得出各个位置的有效桥梁温度水文图（100年）。考虑到残余应变和塑性变形，将它们转换为桩应变水位图。通过实验室低周疲劳测试和监测结果验证了计算结果。最后，基于分类的温度变化，提出了设计温度载荷谱。

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  • 会议地点 North Queensland(AU)
  • 作者

    Daniel Pak; Markus Feldmann;

  • 作者单位

    RWTH Aachen Univ., Institute of Steel Construction, 52074 Aachen, Germany;

    RWTH Aachen Univ., Institute of Steel Construction, 52074 Aachen, Germany;

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  • 原文格式 PDF
  • 正文语种 eng
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