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| 结构多尺度有限元模型修正试验研究 | |
| 引用本文： | 孙正华,李兆霞,陈鸿天. 结构多尺度有限元模型修正试验研究[J]. 特种结构, 2008, 25(4): 61-66 |
| 作者姓名： | 孙正华 李兆霞 陈鸿天 |
| 作者单位： | 1. 江苏省建筑工程质量检测中心有限公司,南京,210008 2. 东南大学,土木工程学院,南京,210096 3. 香港理工大学,土木与结构工程系,香港九龙 |
| 基金项目： | 国家自然科学基金资助项目，高等学校博士学科点专项科研基金，香港政府研资局(RGC)资助项目 |
| 摘 要： | 本文以实验室的大跨桥梁结构钢箱梁纵向加劲桁架缩尺试样为研究平台,具体讨论了多尺度模型修正和验证的实施过程。首先分析了影响此结构多尺度模型精度的一些因素,然后采用基于灵敏度的方法对多尺度模型进行修正,并通过实测数据从动力特性和静力响应等多方面对所建的结构多尺度有限元模型进行了验证。结果表明:基于子结构方法建立的结构多尺度模型是有效的。 |
| 关 键 词： | 结构多尺度有限元模型 模型修正 模型验证 桥梁加劲桁架 |
Model Updating and Verification of Multi-scale Model of the Welded Steel Truss |
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| Sun Zhenghua,Li Zhaoxia,Chen Hongtian. Model Updating and Verification of Multi-scale Model of the Welded Steel Truss[J]. Special Structures, 2008, 25(4): 61-66 | |
| Authors: | Sun Zhenghua Li Zhaoxia Chen Hongtian |
| Abstract: | The detailed process of model updating and validating was discussed for the case of the reduced scale specimen of the steel box girder in longitudinal stiffening truss of a long span bridge.Firstly,some influence factors affecting the accuracy of the multi-scale finite element model were analyzed using sensitivity method.Then,sensitivity- based model updating technology was adopted to update the developed multi-scale FEM and model verification was carried out through calculating and comparing testing stresses.It can be concluded that the multi-scale finite element model based on the substructure method is valid. |
| Keywords: | Multi-scale finite element model Model updating Model verification Bridge truss |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |