摘要
运用ANSYS软件进行了不同线型的体外预应力筋加固简支梁的有限元分析。模型中考虑了材料非线性、几何非线性,忽略了梁体与转向块处、体外索的摩擦,将模拟结果与试验梁实测值比较,结果表明有限元模型精度较高,结果吻合良好。利用仿真分析方法,模拟了在施加体外预应力及加载过程中混凝土梁应力、挠度及极限荷载的变化,转向块对应力、挠度等的影响。
Based on ANSYS software , a nonlinear finite element analysis is performed on Reinforced Concrete Simple Supported Beams Reinforced by the Externally Prestressing tendons with different line shapes. Geometric and material nonlinear are considered in model, friction of external cable and beam and rotation block is ignored. Calculated value of ANSYS and actual value are compared, and it is shown that the precision of the model is high, both are in good agreement. Changing situation of stress and displacement for the concrete and effect of stress and displacement produced by rotation block during applying external prestress and loadingare are analyzed using simulative method.
出处
《低温建筑技术》
2010年第5期56-57,共2页
Low Temperature Architecture Technology
关键词
体外预应力
承载能力
转向块
externally prestress
bearing capacity
rotation block
