摘要
在中(下)承式拱桥的有限元模型中,引入了由于施工中吊杆长度调整而产生的几何刚度矩阵,用一阶矩阵摄动理论,导出了相应的吊杆系静张力分析的相关公式。对一实际中承式拱桥的数值计算分析表明,使用本方法可有效地提高中(下)承式拱桥的吊杆静张力分析的准确性。
The correlative formulas analyzing static stress of suspenders of half-through or through arch bridges are presented in this paper. Based on the perturbation theory, geometry stiffness matrix produced by adjusting length of suspenders in construction is considered by improved FEM. The results are obtained by calculating the static stress on suspenders of a true half-through arch bridge. The results show that accuracy of static stress of suspenders of the half-through or through arch bridges can be improved in effect.
出处
《世界地震工程》
CSCD
北大核心
2006年第4期99-103,共5页
World Earthquake Engineering
关键词
中(下)承式拱桥
吊杆(索)
几何刚度矩阵
静张力
half-through or through arch bridge
Suspender
geometry Stiffness matrix
static stress
