The optimization of the radius of openings and the gap between openings is performed based on a modified eigen buckling load, which corresponds to arch efficiency.
通过选用一种代表开洞拱效率的特征值屈曲荷载参数，研究了腹板孔洞的半径和间距的优化尺寸。
The effects of geometrical imperfections, unuhiform loads and support settlements on the in-plane buckling of circular arch are investigated.
研究了几何缺陷、荷载非均匀分布和支座沉陷对圆弧拱面内屈曲的影响。
For a secondary bifurcation buckling load, the limit load carried capacity of the arch of 0.1 rise-span ratio is the biggest one under a full span load distribution.
全跨均布荷载作用下，矢跨比0.1的拱极值点屈曲和二次分岔屈曲极限承载力均大于其他拱。
The stability of arch dam against elastic buckling has always been ignored.
拱坝的抗屈曲稳定性一直是未被重视的问题。
Secondly, a classical elastic flexural-torsional buckling tests on arch is introduced, which is simulated by shell element SHELL63 and beam element BEAM189 of commercial software ANSYS.
其次介绍了一个经典的拱的弹性弯扭屈曲试验，并采用有限元商业软件ANSYS中的SHELL63单元和BEAM189单元分别进行了模拟。
Throgh eigenvalue buckling analyses, the stability of the through steel-box tie-bar arch-bridge is analyzed.
根据特征值屈曲分析方法，对某下承式钢箱系杆拱桥的稳定性进行分析计算。
This paper presents an elastic nonlinear buckling analysis of a kind of steel structure hybridized by I section arch and tensile cables.
本文应用非线性有限元方法研究了索拱结构的平面内稳定问题。
This paper presents an elastic nonlinear buckling analysis of a kind of steel structure hybridized by I section arch and tensile cables.
本文应用非线性有限元方法研究了索拱结构的平面内稳定问题。
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