九曲江大桥吊杆张拉力的优化

The optimization of boom's tension force in Jiuqu River Bridge

以九江大桥为例,在计算中采用系梁的线形、拱肋弯矩作为控制目标来确定成桥状态时吊杆的合理张拉力,并对这两种方法的优缺点进行了分析比较,最后得出:刚性支承梁法在吊杆力的计算上有明显缺陷,建议采用刚性吊杆法的结论。

Taking Jiujiang Bridge as an example,this paper determined the reasonable tension of bridge completion state to suspender as arch rib bending moment as control target,and analyzed and compared the advantages and disadvantages of the two methods,finally obtains the rigid support beam method had obvious defects in suspender force calculation,recommend the conclusion of using rigid suspender method.