摘要
在实际工程施工中,梁拱组合体系桥常需要进行二次调索。将无应力长度控制法应用于(55+230+55)m某大跨梁拱组合体系桥的二次调索过程,提出了计算索力增量的k值迭代法,并与差值迭代法进行比较分析,结果表明,该方法目标明确、迭代次数少、计算精度高、方便施工,在工程应用中取得较好的效果。
In practical engineering construction,the beam-arch composite system bridge often needs secondary cable adjustment.In this paper,the stress-free length control method is applied to the secondary cable adjustment process of(55+230+55)m long-span beam-arch composite system bridge,and the k-value iteration method for calculating cable force increment is proposed.The comparison with the difference iteration method shows that the method has clear objectives,fewer iterations and less calculation.It has high precision,convenient construction and good effect in engineering application.
作者
林阳
覃建标
黄才良
LIN Yang;TAN Jian-biao;HUANG Cai-liang(Institute of Bridge Engineering,Dalian University of Technology,Dalian 116024,China;Guangxi Datengxia Gorge Water Conservancy Development Co.,Ltd.,Nanning 530000,China)
出处
《北方交通》
2019年第10期14-18,共5页
Northern Communications
关键词
梁拱组合体系桥
二次调索
无应力长度
锚杯拔出量
索力增量
差值迭代
Beam-arch composite system bridge
Secondary cable adjustment
Stress-free length
Anchor cup pullout
Cable force increment
Difference iteration
