Control Method on Main Girder Configuration of Self-Anchored Suspension Bridges Based on Long Segment Hoisting Method
Based on the object of self-anchored suspension bridge constructed with long segment hoist method, the load-carrying characteristics and construction technique which is different from other self-anchored suspension bridge is analyzed, and the method of calculation and control on steel box girder configuration during the construction course of long segment hoisted are proposed. For different calculation methods of girder configuration lifting, the influences of the three manners of pre-cambering for steel girders on the configuration and internal force of finished bridge are analyzed. The results show that inverse erection— forward erection—unstressed state synthetic method can guarantee the minimum deviation of steel girder configuration of finished bridge with the design, and it is not necessary to adjust the suspension cable force, and there is no change in main cable configuration and internal force.
Chaohe Chen, Yong Huang and Guangfan Li
Y. Zhao et al., "Control Method on Main Girder Configuration of Self-Anchored Suspension Bridges Based on Long Segment Hoisting Method", Advanced Materials Research, Vols. 243-249, pp. 1540-1548, 2011