三心拱在不同参数影响下平面内稳定性研究

Study on in-plane stability performance of basket handle arch under impacts of various parameters

利用ANSYS有限元程序,考虑几何非线性,对三心拱在参数中拱圆心角2α、高跨比H/L及侧拱圆心角2α1变化时的平面内屈曲临界荷载的变化规律进行研究,对三心拱的平面内稳定性得到一些定性认识。

Utilizing finite element program-ANSYS the variation regularities of in-plane buckling critical load of basket handle arch with the changes of central angle 2α of middle arch, depth-span ratio H/L and central angle 2α1 of side arch are studied. Some qualitative conclusions about the in-plane stability performance of basket handle arch are obtained.