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底层大柱距框筒结构的受扭特性 被引量:1

CHARACTERISTICS OF FRAMED-TUBE STRUCTURES WITH WIDELY SPACED COLUMNS ON THE GROUND FLOOR UNDER TORSION
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摘要 本文提出了一种简便而又较精确的方法,以分析受扭的框筒结构,并介绍了一个15层的有机玻璃框筒结构模型试验情况。模型为底层大柱距的框筒结构,量测了结构的扭转角和第一、第二两层柱内的应变,通过换算得到柱内的剪力分布规律。根据模型试验结果,用等效的平面框架代替三维的框筒结构,在角柱处设置一具有特殊性质的水平虚拟构件,扭矩的作用,用作用于平面框架内的水平剪力来替代。计算结果与本文模型和另一模型的试验结果都相符合。最后,提出了一些主要结构参数对内力影响的规律,并进行了讨论。 A simple and accurate method to analyse the framed-tube structures under torsion as well as a 15-story framed-tube plexiglass model test is presented in this paper. The model is designed with widely spaced columns on the ground floor.The torsional angles of the structure and the strains in the 1st.floor and the 2nd.floor are measured.The distribution of internal shear in these columns is obtained. Based on the results of the model test,a three diamensional framed-tube structure can be replaced by an equivalent plane frame,and the fictions horizontal members with specially prescribed properties are added at the corners of the structure.The action of torsion can be represented by a pair of horizontal shear forces in the frame plane. The results from the theoretical analysis have good agreement with those from the model test by us and from another model test in reference by others.Finally,some principle structural parameters are presented and are discussed.
机构地区 同济大学
出处 《工程力学》 EI CSCD 1990年第1期76-88,共13页 Engineering Mechanics
关键词 高层 框筒结构 模型试验 受扭 Tall building with widely spaced structure 15-story model test Equivalent plane frame method Design suggestion
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参考文献1

  • 1屠成松,张建荣.高层筒中筒结构平面展开分析法[J]工程力学,1987(01).

同被引文献2

  • 1梁启智,高层建筑结构分析与设计,1992年
  • 2梁启智,钢结构研究论文报告选集,1982年

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