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为了能更好地解决因地形条件限制而增加的施工难度,建立了大跨径钢箱提篮拱桥缆塔、扣塔合一的吊装结构体系,分析了该体系各部位的受力特点和传力功能,研究了结构体系的计算方法。以主跨274 m的重庆朝阳复建桥为例,借助有限元计算模型和仿真分析,验证了该方法的准确性。计算结果表明:该计算方法简单有效,且具有较高的计算精度,能有效地指导大跨径钢箱提篮拱桥的现场吊装施工。
In order to solve the difficulty of construction increased due to the limitation of terrain conditions, a hoisting structure system of large-span steel basket escalator arch bridge and buckle tower was established, and the force characteristics and transmission force of various parts of the system were analyzed Function, studied the calculation method of structural system. Taking the 274 m-long Chongqing Chaoyang Bridge as an example, the accuracy of this method is verified by means of finite element model and simulation analysis. The calculation results show that the calculation method is simple and effective, and has high calculation accuracy, which can effectively guide the construction of on-site hoisting of long span steel box basket arch bridge.