長大斜張橋の弾塑性有限変位解析における計算効率に関する2, 3の考察

抄録

The method of numerical iteration strategy for the elsto-plastic finite displacement analysis of long-span cable-stayed bridges is discussed in this paper. An improved method for stress integration in plastic zone is first proposed. As for the iterative analysis, some of arc-length and displacement incremental methods are considered and their efficiency is compared by analyzing a cable-stayed bridge model with the center span length of 1400m. The numerical result shows that the iterative method using displacement control condition is efficient for the elsto-plastic finite displacement analysis of the long-span cable-stayed bridge.