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Time effects on the static response of concrete filled steel tubular arch bridges

机译：时间对钢管混凝土拱桥静响应的影响

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摘要

This paper presents a finite element model implemented in ABAQUS to investiagte the longtermrnbehaviour of CFST arch bridges and to highlight the influence of time effects on the overall structuralrnresponse considering the construction sequence and geometric nonlinearities. The numerical results presentedrnin the paper are based on a particular case study which consists of the Dong-GuanWaterway bridge. The abilityrnof the proposed approach to predict the long-term response of CFST arch bridges has been validated againstrnsite measurements recorded during construction. It has been observed that the time-dependent behaviour of thernconcrete has a significant effect on displacements, stress distributions, and bending moment diagrams of CFSTrnarches during construction and in service, while highlighting the importance of accounting for the actual timesrnof loading when inserting applied actions in the analyses and for the presence the live loads.
机译：本文提出了一种在ABAQUS中实施的有限元模型，以研究CFST拱桥的长期性能，并在考虑施工顺序和几何非线性的情况下，强调时间效应对整体结构响应的影响。本文中给出的数值结果是基于一个特殊的案例研究，该案例包括东关水道大桥。所提出的预测CFST拱桥长期响应的方法的能力已针对施工期间记录的现场测量结果进行了验证。已经观察到，混凝土的时变行为在施工和使用过程中对CFSTrnarches的位移，应力分布和弯矩图有显着影响，同时强调了在插入应用的作用时考虑实际时间荷载的重要性。分析以及现场荷载的存在。

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  • 来源
    《Tubular structures XIV》|2012年|65-72|共8页
  • 会议地点 London(GB)
  • 作者

    Y. Geng; X.R.Wu; Y.Y.Wang; G. Ranzi;

  • 作者单位

    School of Civil Engineering, Harbin Institute of Technology, Harbin, China;

    School of Civil Engineering, Harbin Institute of Technology, Harbin, China;

    School of Civil Engineering, Harbin Institute of Technology, Harbin, China;

    School of Civil Engineering, The University of Sydney, Sydney, Australia;

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  • 正文语种 eng
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