DETERMINE THE RATIONAL COMPLETION CABLE FORCES OF COMPOSITE BEAM CABLE-STAYED BRIDGES USING STEP BY STEP ARITHMETIC
The main beam of composite beam cable-stayed bridge is an association construction. When determining the rational completion cable forces, it is different from others. In this paper, against the characteristic of composite beam cable-stayed bridge, combining specific example, simulating the main beam with plane double-deck frame model. First, determining a group of completion cable force by Zero main beam displacement method. Then, considering the combined action of dead-load and live-load, determining the rational feasible zone of flexural torque of the main beam by main beam stress balance method. At last, adjusting cable forces according to the influence matrix of cable force to flexural torque of the main beam. The cable force determined by this method is more rational. Compared with the traditional method, using plane double-deck frame model simulate the composite beam is easier. The construction process can be simulated conveniently according to the construction subsequence. Compared with using only one method determine the rational completion cable forces, the synthesis method proposed in this paper is more precision and the cable forces approach actual value. This method can be used only by large-scale finite element programANSYS, so the results are reliable. It can be used conveniently and easily.
cable-stayed bridge composite beam rational completion status cable force
Jun Yang
College of Civil & Hydraulic and Hydro-power Engineering of China Three Gorges University, Yichang 443002, P.R. China
国际会议
广州
英文
871-875
2009-11-28（万方平台首次上网日期，不代表论文的发表时间）