摘要
本文提出了两种方法用于分析、计算平面形状不规则的板或类板结构。利用等效网格模拟异形板或类板结构,编制了计入剪切变形影响的平面格构静力分析程序,其中将等参单元的思想引入任意四边形网格的荷载分配上。随后导出了影响面计算公式,编制了相应的程序,并将所得影响面以等值线的形式用绘图仪自动输出,为异形桥梁的设计计算提供了新的途径。本方法的电算结果与光弹贴片试验结果相此较,两者吻合良好。文末给出了一个实例。
Two methods are presented to analyse the irregular shaped slabs and pseudo-slabs. The finite element method based on grillage analogy is programmed, in which the effects of shear deformation are taken into account, and the concept of isoparametric element is introduced to load distribution for quadrilateral grid. The formulas based on grillage model are developed to calculate the influence surface, and the corresponding program is designed. For the convenience of application, the influence surface is automatically given in the form of coutour line, which offers a new way for the design of irregular shaped bridges. The photoelastic coat test results of forked bridge model are in agreement with those by the program. Finally, an example is given.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
1989年第6期61-68,共8页
Journal of Southeast University：Natural Science Edition
关键词
桥梁
异形板
类板结构
计算法
slab, internal force, influence line, programs, finite element methed / pseudo-slab, irregular shaped slab
