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测量工作是斜拉桥钢箱梁吊装施工的重要组成部分,从施工控制网的建立、观测与数据处理、平差计算,到上部结构的施工放样,钢箱梁吊装过程中平面与竖向形态测量监控等,贯穿整个施工过程。之江大桥属高次超静定结构,是由塔、梁、索共同组成的平衡体系,任何状态的改变都会影响结构内力分配和主梁线形的变化。
The measurement work is an important part of the hoisting construction of the steel box girder of cable-stayed bridge. From the establishment of construction control network, observation and data processing, adjustment calculation, to the construction lofting of the superstructure, the plane and vertical form during hoisting of steel box girder Measurement monitoring, etc., throughout the construction process. The Zhijiang Bridge is a high-order statically indeterminate structure, which is a balanced system composed of towers, beams and cables. Any change of state will affect the distribution of internal forces and the linear change of the main girder.