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既有桥梁承载能力评估方法

, PP. 147-152

Keywords: 现有桥梁,承载力,静力评估,动力评估

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Abstract:

既有桥梁结构承载能力的评估涉及桥梁状态评定、养护与管理、维修与加固等,不仅是桥梁工程师的基本职责,也是广大业主所非常关心的.本文指出了桥梁评估与设计的基本区别,介绍了桥梁承载力评估的静力方法,分析了中美两国桥梁评估规范的异同.接着提出了一套既有桥梁结构承载能力评估的动力方法,该方法结合现场环境振动试验和有限元分析,具有显著的优点.文中采用2个典型桥例,分析了不同评估方法的结果与结论.最后依据发展要求,讨论了进一步研究的主要方向.

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