Finished-Stage Cable Force Optimization Research Of Cable-Stayed Bridge Without Backstays

Leaning Tower cable-stayed bridge without backstays, is a kind of novel and uniquebridge structure along with beautiful shape.The use of pillar tilt is to balance the dead loadand live load. Because Leaning Tower cable-stayed bridge without backstays has the pointof no back stayed cable and asymmetry, later bridge structures have an adjustment to cableforce internal force and the final state of the linear to meet the design requirements.In this paper, the main contents as follows:1this article through the domestic and foreign existing no back stayed cable bridgeanalysis and study,introduces a various of cable force adjustment method at finished stage,as well as its advantages and disadvantages. It is mostly about how to judge criticaloptimization state and select the appropriate cable tension optimization2At finished bridge optimization calculation stage，ZiChang bridge is analyzed by usingthe finite element model of MIDAS.By comparing the various cable force optimizationmethods,The paper uses the unknown load coefficient method and influence matrix methodfor the optimization of cable force by Selecting the suitable bridge optimization controltarget and optimizing the constraint conditions and. In this paper, the method of cableoptimization similar bridge has guiding significance.to the similar bridge3At finished bridge optimization construction control stage, Choosing the right bridgecable force method is able to find out a set of cable force optimization value.But if theconstruction process failed to take strict construction control cable force especially tensionanchor is not in place, the bridge still cannot achieve bridge bridge optimal state.Thereforethis bridge uses adaptive control theory to strict construction control,and Introduces thetension of anchor cable force matters.To ensure the accuracy of the tension cable force, thepressure sensor and Anchor cable project select dual control plan. Finally through the analysisof tower beam deformation value, we can verify the effectiveness of the cable force tension.