摘要
对钢管混凝土拱桥吊装施工拱肋控制点的预抬高值分两部分进行考虑:一部分由刚体位移引起,一部分为拱肋弹性变形产生,两部分之和为实际的预抬高值。计算结果与有限元结果进行了比较,结果表明拱肋弹性变形可以达到刚体位移的量级,随着钢管混凝土拱桥跨度的增加,仍将拱肋简单的假定为刚体会带来不可接受的误差。
The prearranged height calculations in control points of steel arch ribs during constructing a concrete-filled steel tubular arch bridge are divided into two parts: rigid body displacement and elastic deformation. The calculated prearranged heights are compared with those obtained from finite element calculation. It is demonstrated that the elastic deformation can reach the same level of rigid body displacement. The rigid body assumption of steel arch ribs may result in unaccepted error with the increase in...
出处
《福建建筑》
2005年第3期52-54,41,共4页
Fujian Architecture & Construction
关键词
钢管混凝土拱桥
预抬高值
施工控制
弹性变形
concrete-filled steel tubular arch bridge
prearranged height
construction control
elastic deformation
