虚拟调索法在钢筋混凝土系杆拱桥施工中应用

On application of virtual cable tension adjustment in reinforced concrete tied arch construction

针对某钢筋混凝土拱桥在施工过程中出现的吊杆索力实测值与理论值相差较大的情况,采用虚拟调索法在模型中模拟此时的状态,进行二次调索得到优化索力值,将其应用于实桥中,得到最终理想结果,经分析研究,此方法可行且具有一定的实践意义。

According to the fact of the larger differences between the measured value of the tied arch cable tension with the theoretic one in the construction process of some reinforced concrete arch bridge and unsatisfying tested cable adjustment for the demands, the paper adopts the virtual cable adjustment method in the simulation of the model, the optimal cable force value can be achieved in the secondary cable adjustment, applies the technique in factual bridges, achieves some ideal results, and proves by the analysis and research that the method is feasible and meaningful in practice.