摘要
对一种新型的倒三角形拼装桁架桥的整体稳定性进行研究。借助通用有限元分析软件ANSYS建立长度为51m桥梁的有限元模型,通过与桥梁静载试验对比验证有限元模型的可靠性。在此基础上考虑几何和材料双重非线性,进行非线性屈曲分析。采用弧长法追踪桥梁在荷载作用下的荷载-位移曲线,得到桥梁在多种跨度下的极限承载力和稳定安全系数。研究结果对同类桥梁的设计具有一定的参考价值。
Overall stability of a novel inverted triangle assembled truss bridge was studied. A model of 51 m-long bridge was built based on finite element method, and its reliability was verified by bridge loading test. Considering the material and geometrical dual non linear, non linear buckling analysis for the bridge was made. The load displacement curve of the bridge under load was traced through arcqength method, and the ultimate bearing capacity and stability safety factors for the bridge with different spans were obtained. The results can provide somc references for the design of the bridge.
出处
《钢结构》
北大核心
2015年第6期10-12,21,共4页
Steel Construction
基金
深海水下油气输送结构极端载荷作用机理研究(2014CB046801)
关键词
倒三角形
拼装桁架桥
非线性屈曲分析
极限承载力
inverted triangle
assembled truss bridge
nonlinear buckling analysis
ultimate bearing capacity
