Determining the Rational Completion Cable Forces Based on Influence Matrix Method United Minimum Bending Energy Method

There are many methods to determine a rational completion state. However, it is difficult to determine the optimal cable tension using just one method, besides, different methods must be adopted for different types of bridges. As a result, it is feasible to combine minimum bending energy with the influence matrix method. The basic approach is: the initial cable tension can be determined through the minimum bending energy method, then the cable tension is adjusted through influence matrix, whose constraint conditions are stresses of key sections and support reaction from the top of pier, at last, the optimal cable tension of the finished state is determined. This method is not only simple but also very clear, and it achieves a good effect in determining the rational completion state of this type of bridges.