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首页> 外文期刊>Journal of Engineering, Design and Technology >A comparative study on static properties of a three-main-truss and three-cable-plane cable-stayed bridge
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A comparative study on static properties of a three-main-truss and three-cable-plane cable-stayed bridge

机译:三主桁三索面斜拉桥静特性的比较研究

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Purpose - This paper aims to obtain the further and overall generation about the static characteristics of the structure for the better application of the structure. Design/methodology/approach - Through nonlinear finite element simulation, serials of comparative analyses are performed on this structure and other three assumed structures, which illustrate the effect of the main part of the structure on the structural static properties. Meanwhile, adopting the first order method, spatial cable force optimization makes the structural mechanic more rational. Findings - Under same level stress, this three-main-truss and three-cable-plane bridge could save almost 38.8 percent vertical chords materials consumption at least. In contrast, this bridge has a lower lateral torsional stiffness, considering the key to raise the lateral and torsional stiffness is enhancing axial stiffness of plane bracing, the suitable plane bracing members area is twice as the original area. After rational optimization, the cable tension ratio between the mid-cable plane and the two side-cable planes ranges from 1.09 to 1.14. Originality/value - The work in this paper of the comparative analysis could give other engineers a way to a deep analysis method for the structural analysis, especially in civil engineering. The conclusions would provide other designers some applied advice.
机译:目的-本文旨在获得关于结构静态特性的更全面的信息,以更好地应用结构。设计/方法/方法-通过非线性有限元模拟,对该结构和其他三个假定结构进行了一系列比较分析,它们说明了结构主要部分对结构静特性的影响。同时,采用一阶方法,空间索力优化使结构力学更加合理。调查结果-在相同的水平应力下,这种三主桁架和三电缆平面桥至少可以节省近38.8%的垂直弦材料消耗。相反,该桥具有较低的侧向扭转刚度,考虑到提高侧向和扭转刚度的关键是增强平面支撑的轴向刚度,合适的平面支撑构件面积是原始面积的两倍。经过合理的优化后,中间电缆平面和两个侧面电缆平面之间的电缆张力比为1.09至1.14。独创性/价值-本文中比较分析的工作可以为其他工程师提供一种深入分析结构分析方法的方法,尤其是在土木工程中。结论将为其他设计师提供一些实用建议。

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