Cable Tension Optimization And Program Design Of Cable-stayed Bridge

As a kind of flexible structure with great ability of span, cable-stayed bridge hasquiet great progress in recent years. The cable is one of the key parts of cable-stayed.bridge. It takes on most part of the load in constructing and constructed of cable-stayedbridge. Rational cable force can guarantee thestructure safety in construction and makethe structure's internal force reasonable after construction.The cable forces adjustment in design and construction of bridge are. Through theadjustment of cable force, structure's internal force can come out in reason. On thebasis of the analysis of basic calculate methods for rational cable force for concretecable-stayed bridge, the rational cable force of cable-stayed bridge is calculated by theleast bending strain energy method, advantages of the influence matrix method forcable force adjustment are discussed.In order to quantify the reliability of stay cable on cable-stayed bridge under theinfluence of vehicle load fatigue reliability formula of stay cable is modified byassuming that the fatigue life is in accordance with the Weibult distribution. Based onthe accurate analysis of vehicle load spectrum, the time history of stay cable issimulated.Based on these theories and methods, construction control of cable-stayedAnalysis System GPOM is developed by using object oriented programming tools,Fortran77 as tool. This program make the construction control analysis of cable-stayedbridge become more convenience at any time. It should be pointed out an example isgiven for presented program to demonstrate the accuracy and efficiency of thoseprogram. Analyzing the result obtained from the program, it can be concluded that theprogram is convenient for using.