| 桥梁实测频率的温度影响分析 |
| |
| 引用本文： | 侯立群,李宏伟,冷志鹏,林长春,曾国良.桥梁实测频率的温度影响分析[J].中南公路工程,2011(4):4-7. |
| |
| 作者姓名： | 侯立群 李宏伟 冷志鹏 林长春 曾国良 |
| |
| 作者单位： | 宁波杉工结构监测与控制工程中心有限公司;哈尔滨工业大学土木工程学院;江西省交通科学研究院; |
| |
| 基金项目： | 江西省交通厅重点科技攻关项目(200810) |
| |
| 摘 要： | 基于桥梁健康监测系统的实测数据,研究了桥梁实测频率的温度影响规律,结果表明桥面实测频率在一天内呈周期变化,且总体趋势随温度升高而降低,但桥面频率时程曲线与温度时程曲线有时存在相位差。利用有限元模型分析了桥梁温度变化与频率变化的内在影响机理,结果表明温度导致的弹性模量的改变对频率的影响占主导地位,温度变化量与频率变化量近似成线性关系,并且有限元模拟的频率的温度影响趋势与实测数据的温度影响趋势一致。
|
| 关 键 词： | 桥梁工程 桥梁状态监测 有限元模拟 系统辨识 温度 |
Analysis and Correction Method of Temperature Influence on Measured Frequency of a Bridge |
| |
| HOU Liqun,LI Hongwei,LENG Zhipeng,LIN Changchun,ZENG Guoliang.Analysis and Correction Method of Temperature Influence on Measured Frequency of a Bridge[J].Central South Highway Engineering,2011(4):4-7. |
| |
| Authors: | HOU Liqun LI Hongwei LENG Zhipeng LIN Changchun ZENG Guoliang |
| |
| Institution: | HOU Liqun1,LI Hongwei1,2,LENG Zhipeng1,LIN Changchun1,ZENG Guoliang3(1.Ningbo Shangong Center of Structural Monitoring & Control Engineering Co.,Ltd.,Ningbo,Zhejiang 315176,China,2.School of Civil Engineering,Harbin Institute of Technology,Harbin,Heilongjiang 150090,3.Jiangxi Research Institute of Communications,Jiangxi,Nanchang,Jiangxi 330008,China) |
| |
| Abstract: | Based on measured data from the bridge health monitoring system,the regularity of temperature influence on measured frequency of this bridge was discussed.The result showed that the measured frequency of bridge deck changed periodically during a day and the average trend of frequency rose alone with the rise of the ambient temperature,but sometimes there was phase difference between the time-history of frequency of bridge deck and that of temperature.The internal influence mechanism of temperature on freque... |
| |
| Keywords: | bridge engineering bridge state monitoring finite element simulation system identification temperature |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
