[1]孙正华,李兆霞,陈鸿天.结构行为一致多尺度有限元模型修正及验证[J].东南大学学报(自然科学版),2009,39(1):85-90.[doi:10.3969/j.issn.1001-0505.2009.01.016]
 Sun Zhenghua,Li Zhaoxia,Chan Hungtin Tommy.Updating and verification for multi-scale finite element model of structure behavior[J].Journal of Southeast University (Natural Science Edition),2009,39(1):85-90.[doi:10.3969/j.issn.1001-0505.2009.01.016]
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结构行为一致多尺度有限元模型修正及验证()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第1期
页码:
85-90
栏目:
数学、物理学、力学
出版日期:
2009-01-20

文章信息/Info

Title:
Updating and verification for multi-scale finite element model of structure behavior
作者:
孙正华1 李兆霞2 陈鸿天3
1 江苏省建筑科学研究院, 南京 210008; 2 东南大学土木工程学院, 南京 210096; 3 昆士兰科技大学建筑环境与工程学院, 昆士兰 Q4001
Author(s):
Sun Zhenghua1 Li Zhaoxia2 Chan Hungtin Tommy3
1 Jiangsu Institute of Building Science, Nanjing 210008, China
2 School of Civil Engineering, Southeast University, Nanjing 210096, China
3 School of Urban Development, Faculty of Built Environment and Engineering,
关键词:
结构健康监测 结构行为一致多尺度有限元模拟 模型修正 模型验证 桥梁加劲桁架
Keywords:
structural heath monitoring(SHM) concurrent multi-scale modeling of structural behavior model updating model verification bridge stiffening truss
分类号:
O346.5
DOI:
10.3969/j.issn.1001-0505.2009.01.016
摘要:
研究面向结构健康监测和损伤评估的含局部细节的结构多尺度有限元模型的修正和验证方法.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,如边界约束刚度、焊趾及其附近的几何及材料参数等,然后采用基于灵敏度的方法对多尺度模型进行修正,并通过不同于修正过程的加载工况和不同位置处的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行为一致多尺度模型是有效的.
Abstract:
The method on concurrent multi-scale model of structural behavior(CMSM-of-SB)for the purpose of structural health monitoring including model updating and validating has been studied. The detailed process of model updating and validating is discussed in terms of 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 CMSM-of-SB including the boundary restraint rigidity, the geometry and material parameters on the toe of the weld and its neighbor are analyzed using sensitivity method. Then, sensitivity-based model updating technology is adopted to update the developed CMSM-of-SB and model verification is carried out through calculating and comparing stresses on different locations under various loading from dynamic characteristic and static response. It can be concluded that the CMSM-of-SB based on the substructure method is valid.

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备注/Memo

备注/Memo:
作者简介: 孙正华(1976—),女,博士; 李兆霞(联系人),女,博士,教授,博士生导师,zhxli@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(10672038,90715014)、香港政府研资局(RGC)资助项目(PolyU 5134/03E)、江苏省自然科学基金资助项目(BK2008506)、江苏省建设系统科技资助项目(JS2008JH04).
引文格式: 孙正华,李兆霞,陈鸿天.结构行为一致多尺度有限元模型修正及验证[J].东南大学学报:自然科学版,2009,39(1):85-90.
更新日期/Last Update: 2009-01-20