[1]张岗,王新敏,贺拴海..子模型技术在混凝土箱梁悬臂板分析中的应用[J].郑州大学学报(工学版),2007,28(03):28-32.[doi:10.3969/j.issn.1671-6833.2007.03.008]
　ZHANG Gang,Wang Xinmin,He Jihai.Application of sub-model technology in concrete box girder cantilever plate analysis[J].Journal of Zhengzhou University (Engineering Science),2007,28(03):28-32.[doi:10.3969/j.issn.1671-6833.2007.03.008]

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子模型技术在混凝土箱梁悬臂板分析中的应用()

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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

28

期数:

2007年03期

页码:

28-32

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Application of sub-model technology in concrete box girder cantilever plate analysis

作者:

张岗; 王新敏; 贺拴海.

石家庄铁道学院,大型结构所,河北,石家庄,050043, 石家庄铁道学院,大型结构所,河北,石家庄,050043, 石家庄铁道学院,大型结构所,河北,石家庄,050043

Author(s):

ZHANG Gang; Wang Xinmin; He Jihai

关键词:

桥梁工程;  混凝土箱梁;  悬臂板;  有限元;  子模型技术

Keywords:

bridge engineering;  concrete box girder;  cantilever plates;  finite elements;  Submodel technology

DOI:

10.3969/j.issn.1671-6833.2007.03.008

文献标志码:

A

摘要:

结合子模型技术,通过大型有限元程序分别建立实体单元模型及板壳单元模型,进行数值仿真分析.研究子模型技术在混凝土箱梁悬臂板实体单元建模分析中的3种方法及实施技巧,考察悬臂板根部内力的影响因素:厚度、长度、箱梁畸变及荷载作用位置.结果表明:子模型区域宽度越接近悬臂板有效分布宽度,子步法和混合网格法计算结果越准确,效率高;对于有效梁段法,3倍于有效分布宽度的梁段为计算精度和计算时效的最佳尺度.实体单元建模综合考虑影响因素,其分析结果相对于板壳单元分析结果及其它算法更接近试验结果,子模型技术适合于混凝土箱梁悬臂板局部精细分析.

Abstract:

Combined with sub-model technology, the solid element model and the plate and shell element model are established through a large-scale finite element program respectively for numerical simulation analysis. Three methods and implementation techniques of sub-model technology in the modeling and analysis of concrete box girder cantilever slabs were studied, and the influencing factors of the internal forces of the cantilever slab were investigated: thickness, length, box girder distortion and load action position. The results show that the width of the sub-model area is closer to the effective distribution width of the cantilever plate, the more accurate and efficient the calculation results of the substep method and the mixed mesh method are. For the effective beam segment method, the beam segment that is 3 times the effective distribution width is the best scale for calculating accuracy and calculating time. The solid element modeling comprehensively considers the influencing factors, and the analysis results are closer to the test results than the analysis results of plate and shell elements and other algorithms, and the sub-model technology is suitable for the local fine analysis of concrete box girder cantilever plates.

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