摘要
用有限个横向条带法构造了板桁组合结构板段考虑局部屈曲的空间位移模式。基于三维连续体的虚功增量方程，导出了横向条带板段单元的ＵＬ列式，并考虑了板段单元位形变化的影响。此计算方法自由度少，计算精度高，能用于大型板桁结构的几何非线性分析。文末计算了广东西江桥板桁组合结构模型梁，计算结果与实测结果吻合较好。
In this paper, a space displacement
field on considering the deck local buckling for the plate truss composite is constructed by
using transverse finite stripe. The Update Lagrangian formulations of deck beam finite element
in transverse stripe are induced based on the three dimensional continuum virtual work
incremental equilibrium equation, and the effect of large deformation is taken into consideration.
This method has high accuracy and less degrees of freedom, especially for geometric non
linear analysis of large plate truss composite structure. In the end of this paper. Guang Dong Xi
Jian plate truss composite structure model steel bridge is calculated, the results are very close
approximation to the test data.
出处
《计算力学学报》
CAS
CSCD
1999年第3期355-360,共6页
Chinese Journal of Computational Mechanics
基金
铁道部科技发展基金
关键词
板桁结构
横向条带板段单元
局部屈曲
UL列式法
plate truss composite structure
transverse stripe
deck
beam finite element
local buckling
U. L. formulation
