邓科, 郭彦林. 轴心受压梭形变截面钢管格构柱的弹性屈曲性能[J]. 工程力学, 2005, 22(4): 31-37.
引用本文: 邓科, 郭彦林. 轴心受压梭形变截面钢管格构柱的弹性屈曲性能[J]. 工程力学, 2005, 22(4): 31-37.
DENG Ke, GUO Yan-lin. BUCKLING BEHAVIOR OF SHUTTLE-SHAPED LATTICED TUBIFORM COLUMN UNDER AXIALLY COMPRESSIVE LOAD[J]. Engineering Mechanics, 2005, 22(4): 31-37.
Citation: DENG Ke, GUO Yan-lin. BUCKLING BEHAVIOR OF SHUTTLE-SHAPED LATTICED TUBIFORM COLUMN UNDER AXIALLY COMPRESSIVE LOAD[J]. Engineering Mechanics, 2005, 22(4): 31-37.

轴心受压梭形变截面钢管格构柱的弹性屈曲性能

BUCKLING BEHAVIOR OF SHUTTLE-SHAPED LATTICED TUBIFORM COLUMN UNDER AXIALLY COMPRESSIVE LOAD

  • 摘要: 梭形钢管格构柱是由若干钢管分肢以及许多横向缀管组成的变截面轴心受压构件,良好的力学特性和优美的建筑造型使其广泛应用于索膜结构、大跨度空间结构及高层结构的支承体系,它是近年来出现的一种新型的结构构件.利用有限元软件ANSYS分析了梭形三肢钢管格构柱的几何参数对其弹性屈曲荷载和屈曲模态的影响.这些几何参数包括:柱长、整体长细比、分肢钢管几何尺寸(外径和壁厚)、横向缀管几何尺寸(外径和壁厚)、横向缀管数量(或分肢长细比)等.分析结果表明,梭形格构柱在不同的结构参数下的屈曲荷载和屈曲模态与等截面柱有很大的不同,其中“S”形的屈曲模态反映了这种构件新的屈曲性能.

     

    Abstract: Shuttle-shaped Latticed Column(SLC), as a new type of structural member, has been applied in many long-span public buildings recently because of its structural performance and aesthetical value. It is formed with longitudinal steel tubes and horizontal diaphragm steel tubes. This paper addersses its elastic buckling load and buckling mode under axial loading. A comprehensive study of influences of structural geometric parameter on SLC behavior is presented. These parameters include the SLC length, the SLC slenderness ratio, section property of longitudinal and horizontal tubes, the number of diaphragm tube sets, and so on. A new and interesting buckling mode is extracted from the numerical results, which is quite different from prismatic latticed column. SLC buckles in a mode of single wave or “S” wave, which is dependent on SLC geometric parameters.

     

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