| 大跨度预应力混凝土连续刚构桥的动力特性分析 |
| |
| 引用本文： | 宗周红,赖苍林,林友勤,任伟新.大跨度预应力混凝土连续刚构桥的动力特性分析[J].地震工程与工程振动,2004,24(3):98-104. |
| |
| 作者姓名： | 宗周红 赖苍林 林友勤 任伟新 |
| |
| 作者单位： | 福州大学,土木建筑工程学院,福建,福州,350002;福州大学,土木建筑工程学院,福建,福州,350002;福州大学,土木建筑工程学院,福建,福州,350002;福州大学,土木建筑工程学院,福建,福州,350002 |
| |
| 基金项目： | 福建省科技攻关重点项目(2003H027)，福建省自然科学基金重点项目(F0210007) |
| |
| 摘 要： | 介绍了福建泉州后渚大桥——大跨度预应力混凝土连续刚构桥的现场环境振动实验．并利用频域中的单模态识别法(SDOFI)、峰值法(PP)和时域中的随机子空间识别法(SSI)分别进行桥梁动力特性识别。利用ANSYS建立了全桥三维有限元模型并进行了理论模态分析，基于参数分析和环境振动测试结果对有限元模型进行了标定，建立了该桥的基准有限元模型，该模型可服务于桥梁长期健康监测与状态评估。
|
| 关 键 词： | 预应力连续刚构桥 环境振动 动力特性 模态分析 |
| 文章编号： | 1000-1301(2004)03-0098-07 |
Analysis of dynamic characteristics of a large-span prestressed concrete continuous rigid frame bridge |
| |
| Zong Zhouhong,Lai Canglin,Lin Youqin,Ren Weixin.Analysis of dynamic characteristics of a large-span prestressed concrete continuous rigid frame bridge[J].Earthquake Engineering and Engineering Vibration,2004,24(3):98-104. |
| |
| Authors: | Zong Zhouhong Lai Canglin Lin Youqin Ren Weixin |
| |
| Abstract: | The paper describes the field testing under ambient vibration on a large-span prestressed concrete continuous rigid frame bridge, named Houzhu Bridge, in Quanzhou, Fujian Province. The single-degree-of-freedom (identification) (SDOFI) method and the peak picking (PP) method in frequency domain and the stochastic subspace identification (SSI) method in time domain are used for the output-only data model identification. The 3-D finite element model (FEM) is constructed and modal analysis is performed to get natural frequencies and mode shapes by using ANSYS software. The FE model is calibrated based on the ambient vibration and parameter analysis, and then the baseline FE model is constructed. This calibrated FE model can serve as a baseline in the long-term health monitoring and condition evaluation of the bridge in service. |
| |
| Keywords: | prestressed continuous rigid frame bridge ambient excitation dynamic characteristics modal analysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
