140 m跨下承式钢管混凝土提篮拱的灌注施工线形分析

Line Shape Analysis of Pouring Construction of 140 m Span Through-Type Concrete Filled Steel Tube Basket Arch

结合140 m跨下承式钢管混凝土提篮式系杆拱桥灌注顶升施工的实际,采用有限元对灌注顶升施工的线形变化进行了分析,并据此研究了施工顺序对拱肋受力的影响,提出了最佳施工顺序。其实测数据与计算方法可为同类型桥梁的建设提供借鉴。

Combined with the actual pouring and jacking construction of 140 m span through-type concrete filled steel tube basket tied arch bridge, the line shape variation of pouring and jacking construction was analyzed by the finite element method, and accordingly, the influence of the construction sequence on the arch rib stress was studied. The best construction sequence was then proposed. The measured data and calculation method can provide references for the construction of the same type bridges.