摘要
深入研究了 ANSYS 软件的优化功能模块,并以某大跨连续刚构桥为研究对象,提出了通过分节段优化进而达到全桥沿纵向优化的思路。在保证刚度和强度的条件下,通过对双肢薄壁墩壁厚的优化,使桥梁总重量减少了5.7%;通过对箱梁各部分厚度的优化,使得桥梁的总重量减少了2.5%。说明桥梁设计时优选腹板顶、底板的合理比例是必要的,适当减小双薄壁墩的壁厚是切实可行的,可提高结构性能,减少工程造价。
In this paper, with a deep understanding of the optimization module of ANSYS software, and tacking a large-span continuous rigid frame bridge as example, an advanced study of optimization is conducted, through local optimization of segments we can obtain the global optimization through optimization of the thickness of the wall of the pier, the total weight is reduced by 5.7% ;through optimization of the thickness of every part of the box girder the total weight is reduced by 2.5% ,while stiffness and strength are guaranteed. A reasonable proportion of the girder and thicker pier can improve the performance of the structure and reduce the cost.
出处
《建筑技术开发》
2008年第7期9-11,共3页
Building Technology Development
关键词
连续刚构
优化
箱梁
双肢薄壁墩
Continuous rigid frame
Optimization
Box-girder
Piers
