摘要
在缆索吊装斜拉扣挂施工中,拱肋线形与塔架位移控制是最关键的问题。为使成桥状态的线形和受力满足设计要求,简化拱肋拼装调索计算,采用零弯矩法来初估拱肋吊装过程中的扣锚索索力值,并利用ANSYS的一阶优化功能对其进行迭代优化,从而将结构优化计算理论引入到斜拉索索力确定中。
During erection and stay of cables, the key point is to control the arch rib alignment and displacement of the pylon. To meet the alignment and force as required in the design when the bridge is completed and simplify the calculation for arch rib erection and cable force adjustment, the zero moment method is adopted to estimate the anchor fast cable force with the first order optimization of ANSYS for iterative optimal analysis and the theory of structural optimal calculation to determination of the cable force is introduced.
出处
《中国市政工程》
2007年第A02期94-97,100,共5页
China Municipal Engineering
关键词
外倾式拱桥
缆索吊装
结构优化
索力
external slanted arch bridge
erection with cables
structural optimization
cable force
