Composite Cross-section Reinforced Bridge Carrying The Process Of Simulation Analysis

With the development of transport and communication trade and the upgrade of traffic load, large quantity of service bridge need maintenance or reinforcement to improve the traffic capability. Directed toward the feature of structural member reinforced by sticking stuff, the nonlinear analytical method of layered cross section is researched on the basis of assumption of plane cross section.Applying the theory of FEM, corresponding structural analysis program is developed. The program employs the layered-combination model, and integrated considers the nonlinearity of material and section feature based on the incremental-interactive method. Besides normal analysis of structure and calculation of section constant, the program has the function of analysis the section constant change of load-bearing structure, and this change's efface on the distribute of inner force. Especially important, the program could simulate the whole process of load-bearing bridge: load-bearing-section crack-force redistribute.The program has the friendly surface, convenience man-machine interaction. In the end, model experiment are given to examine and certify the reliability and applicability of this article's theory and program.