Large Span Cable-stayed Bridge Construction Control And Software Development,

As a kind of flexible structure with great ability of span ,cable-stayed bridge has quiet great progress in recent years. But because of an indeterminate flexible structure with many degree of redundancy, its variant inner force under dead-loading, nonlinear behavior and the correlation between construction method and completed structure, especially incessant conversion of system in construction method , these must bring many complicated change to construction internal force and displacement. These main factors resulting in construction control analysis become more important in the design of cable-stayed bridge.Based on the achievements of the former exports, construction control of cable-stayed bridge are discussed and analyzed. In this thesis ,three factors resulting in geometric nonlinearity are taken into account, then using plane frame method and based on plane bar finite element, nonlinear analysis to the construction of cable-stayed bridge is achieved. Ideal completed structure is determined by effect matrix method with choosing the strain energy of the structural system as optimum aim. Ideal state of construction is determined by back-running analysis. Based on these theories and methods, construction control of cable-stayed Analysis System is developed by using object oriented programming tools, Visual Basic as tool. This program make the construction control analysis of cable-stayed bridge become more convenience at any time.It should be pointed out an example is given for presented program to demonstrate the accuracy and efficiency of those program. Analyzing the result obtained from the program ,it can be concluded that the program is convenient for using.