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虚拟层合单元法及其在桥梁工程中的应用
引用本文:凌道盛,张金江,项贻强,徐兴.虚拟层合单元法及其在桥梁工程中的应用[J].土木工程学报,1998(3).
作者姓名:凌道盛  张金江  项贻强  徐兴
作者单位:浙江大学 (凌道盛,张金江,项贻强),浙江大学(徐兴)
摘    要:本文在提出一种新型层合板壳单元的基础上,为适应箱形、T形等截面形式比较复杂的桥梁的有限元计算,提出了“虚拟层台单元”及“虚拟层” 的概念.本方法可大大减少单元数目,大幅度地提高计算效率,并可以十分容易地处理斜弯桥、变截面、变高度及复杂边界条件的问题,而且达到相当满意的精度,具有广泛的工程应用前景.

关 键 词:板壳单元  虚拟层合单元法  桥梁工程  箱形梁

THE METHOD OF VIRTUAL LAMINATED ELEMENT AND ITS APPLICATION IN BRIDGE ENGINEERING
Ling Daosheng Zhang Jinjiang Xiang Yiqiang Xu Xing.THE METHOD OF VIRTUAL LAMINATED ELEMENT AND ITS APPLICATION IN BRIDGE ENGINEERING[J].China Civil Engineering Journal,1998(3).
Authors:Ling Daosheng Zhang Jinjiang Xiang Yiqiang Xu Xing
Affiliation:Zhejiang University
Abstract:The concept of virtual lamina and the method of virtual laminated element are put forward based on a new type of laminated plate and shell element presented in this paper. By this method, the number of needed elements can be greatly decreased as well as the computing efficiency can be greatly improved. Moreover, some difficult problems, such as skewed and curved bridges, bridges with varied cross section and varied depth, can be easily dealt with.
Keywords:plate and shell element  the method of laminated element  bridge engineering  box girder bridge
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