| 轨道交通桥梁运营期桥面线形监测数据分析 |
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| 引用本文： | 程辉,钟继卫,李振东.轨道交通桥梁运营期桥面线形监测数据分析[J].桥梁建设,2011(6). |
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| 作者姓名： | 程辉 钟继卫 李振东 |
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| 作者单位： | 1. 中铁大桥局集团桥科院有限公司,湖北 武汉 430034;桥梁结构安全与健康湖北省重点实验室,湖北 武汉 430034
2. 北京轨道交通建设管理有限公司,北京,100037 |
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| 摘 要： | 轨道交通桥梁活载具有单一、变化幅度小等特点,为合理有效评价桥梁结构在运营期是否安全,通过在桥面安装线形监测系统对梁桥面线形进行连续观测.结合轨道交通桥梁桥面线形具有明显的温度长周期效应及活载短周期效应的特点,将桥面线形进行解耦,分解为温度效应线形及活载效应线形,与有限元分析结果进行对比,发现测量值与分析值吻合程度高,且稳定性较好,因此选择单列轻轨列车通过桥梁的线形峰值作为桥面线形阈值报警系统的计算基准值,实现桥面线形监测的实时、自动化报警功能.
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| 关 键 词： | 斜拉桥 运营 监测 线形 温度 活荷载 时程曲线 |
Analysis of Monitoring Data of Deck Geometric Shapes of Rail Transit Bridge in Operation |
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| CHENG Hui
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ZHONG Ji-wei
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LI Zhen-dong.Analysis of Monitoring Data of Deck Geometric Shapes of Rail Transit Bridge in Operation[J].Bridge Construction,2011(6). |
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| Authors: | CHENG Hui ZHONG Ji-wei LI Zhen-dong |
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| Institution: | CHENG Hui1,2,ZHONG Ji-wei1,LI Zhen-dong3(1.Bridge Science Research Institute Ltd.,China Railway Major Bridge Engineering Group,Wuhan 430034,China,2.Key Laboratory of Bridge Structure Safety and Health of Hubei Province,3.Beijing City Rail Transit Construction and Management Co.,Ltd.,Beijing 100037,China) |
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| Abstract: | The live load of rail transit bridge has the characteristics of unitarity and small amplitude of changes.To rationally and effectively evaluate the safety of the bridge in operation,the geometric shapes of deck of the bridge have been continuously observed by the geometric shape monitoring system installed on the deck.In the light of the characteristics that the geometric shapes of the deck have significant long-cycle temperature effect and short-cycle live load effect,the geometric shapes are decoupled and... |
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| Keywords: | cable-stayed bridge operation monitoring geometric shape temperature live load time-history curve |
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