主副拱协作体系柔性系杆拱桥拱肋刚度优化  

Arch Rigidity Optimization of Main-vice Arch Cooperation System Bridge with Flexible Tie Bar

作　　者：石雪飞[1] 徐凯[1] 

机构地区：[1]同济大学桥梁工程系,上海200092

出　　处：《石家庄铁道大学学报（自然科学版）》2012年第2期1-5,46,共6页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

摘　　要：主副拱协作体系(斜靠式)拱桥由主拱肋和斜靠其上的副拱肋构成,是一种受力复杂的空间组合体系。以主副拱协作体系柔性系杆拱桥为研究对象,计算得到了主副拱肋受力随拱肋截面刚度的变化规律,通过拟合数据点得到拱肋内力和抗力关于拱肋截面的参数表达式,在特定优化目标条件下,实现了对主副拱肋刚度的优化,并通过有限元模型验证了优化的正确性,对该类桥型的相关研究有借鉴意义。Main-vice arch cooperation system（inclined arch） bridge is a complicated spatial combination system composed of the main arch and the vice arch.This article is a study of a main-vice arch cooperation system bridge with flexible tie bar.The variation of arch stress state about arch rigidity is calculated.Parameter expression of arch force and resistance about arch section is obtained by fitting data points.The optimization of arch rigidity is achieved under certain optimization objective.Its rationality is tested and verified FEM,which provides a reference for related studies.

关 键 词：主副拱协作体系 柔性系杆 拱肋刚度 优化 

分 类 号：U442.54[建筑科学—桥梁与隧道工程]