Optimal Permutation for Nodes of Bridge Structure by Using Object Oriented Method

Enhancing the speed of finite element analysis in bridge structures not only improves the efficiency and quality of engineering design, but also plays a crucial role in bridge safety assessment, emergency management, and cost control. It is a key direction in the development of modern bridge engineering technology. The total stiffness half bandwidth of a bridge structure is a critical factor that affects the analysis speed, as its size directly influences the computational resources and time required to solve structural equations. This paper analyzes the characteristics of node arrangement when the total stiffness half bandwidth is minimized, and summarizes three principles. The AD algorithm is applied for node optimization ordering, and the algorithm is further optimized in light of the specific characteristics of bridge structures. An object-oriented bandwidth optimization program was developed using VC++. The correctness and reliability of the program were verified through comparative case studies, demonstrating that the method can optimize the half bandwidth value significantly, thereby reducing the computer memory usage and enhancing the computational analysis efficiency.