系杆拱桥吊杆张拉调索方法的比选及实施

Comparison,Selection and Implementation of Suspender Tension Cable Adjusting Method of Bowstring Arch Bridge

以上海大芦线二期航道整治桥梁工程的湖北桥系杆拱桥为例,对施工监控过程的吊杆张拉调索方法-基于影响矩阵法的分批张拉调索法与计算机控制的同步智能张拉调索法进行比选。采用传统的吊杆分批张拉调索法,吊杆张拉力的计算量大,吊杆力误差积累需要多次调整;而同步智能张拉调索法的吊杆力调整方便、控制精确,且张拉速度快。湖北码头桥的工程实践证明,同步智能张拉调索法的优势明确,值得类似工程的借鉴。

Taking the bowstring arch bridge of Hubei Bridge in Daluxian Channel Improvement Bridge Project PhaseⅡ in Shanghaiasan example,the articlecompares and selects the suspendertension cable adjusting methodsthe batch tensi on cable adjusting method based on influence matrix method and the synchronous intelIigent tension cable adjusting method controlIed by computer in the constructi on monitori ng process The amount of calculation for the suspender tension force is large if the conventional batch tension cable adjusting method of suspender is used.The error accumulation of suspender force is required to adjust for many times.But the adjustment and control of suspender force by the synchronous intelligent tensi on cable adj usting method is convenient and exact and the tension speed is fast The engineering practice of Hubei Dock Bridge shows that the superiority of synchronous intelligenttension cableadjusting method is clear,which isworth of referenceforthe similar projects