An Ultimate Load Capacity Analysis Of Preforce Concrete Structure By Virtual Laminated Element Method

When virtual laminated element were used to analyze the ultimate load capacity of bridge, it is found that the number of elements is so small that the calculation efficiency is very high. During the analysis process, the shape of the elements remained unchanged. We can obtain the ultimate load capacity easily as well as the whole process of the damage of a bridge. Firstly, the ultimate load capacity of deep and short beams is analyzed and calculated, using 20梟ode virtual laminated beam element, and the results were found agree well with the experiments. Then we used the virtual laminated element to analyze another two simple supporting beams and the results also agreed well with the experiments. Finally,virtual laminated element was used to analyze a box梘irder bridge named QIXING BRIDGE. Again we tracked the whole process of the damage and obtained the ultimate load capacity. The method of virtual laminated element provides us an feasible way to analyze the ultimate load capacity of a bridge as well as the damage process.