Optimization Study On Error Adjustment Of The Whole Construction Process Of Cable-Stayed Bridge

In the process of Cable-stayed bridge construction, as a result of each kind of factor influence, it maybe exist great deviation between the linear of girder and the perfect condition, the tension of the cable does not tally with the ideal condition and has surpassed the allowance error situation. Tension of the cable affects to the security and the durability of the bridge which is finished, so in the entire process Cable-stayed bridge construction, we must link actual Tension and the ideal condition to formulate Tension so that the deviation of the structure linear,the endogenic force distribution and the perfect condition is the smallest.At present, many people are researching the endogenic force optimization adjustment theory and there are many correlation theories and the method. But for the optimization which adjusts regarding the Cable-stayed bridge construction process, the mature theory are also few. Establishing a set of the optimized method which the mechanics concept is clear, the computation is simple and the construction is feasible is a problem that need to be solved in bridge engineering.This article analyses this question in theoretically and proposed a set method base on the entire constructs process. The primary coverage is as follows:1. expatiating and suming up computational method about Cable-stayed bridge Tension and construction's Tension, introducing the characteristic and merit of the'Second place tension'2. Discussing the significance and the meaning of cable tension adjustment and the error adjustment. Cable-stayed bridge during construction of the cable force and adjust the error after the bridge adjust are belong many goal, many constrained optimization problem.After comparing a variety of mathematical optimization model, according to cable-stayed bridge construction error to adjust the whole process of the optimization study, stating the adjusted error of the construction process step-by-step optimization method.3. Cable-stayed bridge girder cantilever segmental construction error is the main beam adjust elevation and cable force and the smallest square of residual error as the objective function, acrossing to through the establishment Conflicts equations, Using least squares method for solving optimization. 4. Error adjustment is an important aspect of construction control after the cable-stayed bridge finished,Based on the internal force to the smallest margin over the control accuracy of the construction scope of the error set up a single goal adjust many constrained optimization model and solving optimization through the quadratic programming method in mathematical programming .5. According to applying in construction process of Pengxi River cable-stayed bridge,it is verified the correctness and the feasibility of the adjustment .