Taking the double-tower steel-concrete composite beam structure of a long-span bridge project in a certain area as an example,combining with the actual situation of the project,the construction control difficulties of the project are analyzed,and the construction control principles are determined,and the linear control of the main tower,the stress control of the main beam,the cable force control,and the closing control of the steel box beam are carried out.After testing the control effect,it is concluded that the maximum control error of beam top elevation is 15.6 mm,and the control deviation of cable force is less than 5%,which meets the construction standard of bridge engineering.
关键词
桥梁工程/大跨双塔/钢混组合梁/线形控制/应力控制
Key words
bridge engineering/large span twin towers/steel-concrete composite beam/linear control/stress control
维普
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