吴庆雄, 陈宝春. 塔桅结构的斜索面内固有振动计算的修正Irvine方程[J]. 工程力学, 2007, 24(4): 18-023.
引用本文: 吴庆雄, 陈宝春. 塔桅结构的斜索面内固有振动计算的修正Irvine方程[J]. 工程力学, 2007, 24(4): 18-023.
WU Qing-xiong, CHEN Bao-chun. MODIFIED IRVINE EQUATIONS FOR IN-PLANE NATURAL VIBRATIONS OF INCLINED CABLES IN TOWER AND GUYED MAST STRUCTURES[J]. Engineering Mechanics, 2007, 24(4): 18-023.
Citation: WU Qing-xiong, CHEN Bao-chun. MODIFIED IRVINE EQUATIONS FOR IN-PLANE NATURAL VIBRATIONS OF INCLINED CABLES IN TOWER AND GUYED MAST STRUCTURES[J]. Engineering Mechanics, 2007, 24(4): 18-023.

塔桅结构的斜索面内固有振动计算的修正Irvine方程

MODIFIED IRVINE EQUATIONS FOR IN-PLANE NATURAL VIBRATIONS OF INCLINED CABLES IN TOWER AND GUYED MAST STRUCTURES

  • 摘要: 针对Irvine方程计算斜索面内固有振动的不足之处,在推导出整体割线坐标下斜拉索的动力平衡方程式的基础上求得了能简单计算斜索固有振动特性的修正Irvine方程。通过与用Galerkin法得到的精确解进行的对比表明,利用该修正方程能较准确地计算出斜拉索的面内固有振动频率和固有振型。

     

    Abstract: Based on the derived in-plane equations of motion for inclined cables in the global secant coordinate system, the modified Irvine equations are deduced, which compensates the limitation of Irvine equations in calculating the in-plane natural vibration of inclined cables. Compared with the exact results obtained by a Galerkin method, it is shown that the modified Irvine equations can be used to calculate the in-plane natural frequencies and modal shapes of inclined cables.

     

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