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虎门桥主梁挠变之AR(P)模型分析

DOI: 10.3969/j.issn.1674-0696.2014.03.04, PP. 16-17

Keywords: 桥梁工程,AR(P)模型,挠变,挠曲,挠度,bridgeengineering,auto-regressive(P)model[AR(P)Jdef1ectionchange,flexure,def1ection

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Abstract:

:?以虎门大桥主梁施工为工程背景,针对其采用挂篮悬臂中的各梁块挠变必须加以控制,以防止桥跨挠由发展至超限的程度的需求,采用适合边施工边测量边预报的AR(P)模型方法进行监控,旨在支持相关施工方案的及时调整,使悬臂的施工状态尽可能稳定地接近设计状态。分析表明:主梁的合龙精度满足规范与技术标准的要求,验证了自回归理论在桥梁施工监测分析中的实用性和严谨性。

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