Double Loop Single Pylon Cable-stayed Birdge Construction Control And Cable Force Research

Mechanical behavior of cable-stayed bridge with its appearance, by leaps andbounds in terms of economic superiority compared to bridge a lot more, making it nowthe preferred structure of large span bridge types. Future of cable-stayed bridge of amore slender, more lightweight and brings a great deal of difficulty to construction.Therefore, study on construction control of cable-stayed bridges are very meaningful.Currently, construction monitoring of cable-stayed bridge is used in the simulation byfinite element method calculation of plane frame analysis. This article in LIBO,Guizhou Guang Tang bridge engineering background, on double-ring force analysis ofcable-stayed bridge with single tower structure, and successfully applied to Adaptivecontrol method in construction control of cable-stayed bridge, solving a series ofproblems in bridge construction control and analysis of its causes.According to the principles of design of cable-stayed bridges and bridgeconstruction method of characteristics, finite element simulation software simulationapplication in the construction of the actual state, simulation in the process ofconsidering geometric nonlinear effect. At present, the cable-stayed bridge constructioncontrol method of adaptive control method is the most widely used. Detailed in thisarticle expounded the principle of adaptive control method for cable-stayed bridge, acomprehensive analysis of its process. Determination of the reasonable finished deadstate of this bridge is the smallest bending energy method used, is based on the cableforce incompletion stage provided by the design unit, calculated by difference ofapplication is installed the rational bridging cable force and tension at the beginning ofconstruction, provided a theoretical basis for construction control of cable-stayedbridges.This article describes in detail in cable-stayed bridge in the practice of monitoringand control methods, practical reference value. Guizhou Guang Tang Bridge is used bybracket girder of cast by pouring, a stretch of stay cables in place of the constructionprogramme. But in the actual construction process, needs to set the second cable.Applications presented forward-difference method and influence matrix method foradjusting cable, both calculated method of cable force adjustment results are quitesatisfactory.