黄小坤, 段树坤, 刘强, 崔明哲, 聂建国. 结构胶侧扭约束玻璃柱轴压承载力设计方法研究[J]. 工程力学, 2021, 38(3): 122-131. DOI: 10.6052/j.issn.1000-4750.2020.04.0280
引用本文: 黄小坤, 段树坤, 刘强, 崔明哲, 聂建国. 结构胶侧扭约束玻璃柱轴压承载力设计方法研究[J]. 工程力学, 2021, 38(3): 122-131. DOI: 10.6052/j.issn.1000-4750.2020.04.0280
HUANG Xiao-kun, DUAN Shu-kun, LIU Qiang, CUI Ming-zhe, NIE Jian-guo. A STUDY ON THE DESIGN METHOD FOR AXIAL COMPRESSIVE RESISTANCE OF GLASS COLUMNS LATERALLY AND TORSIONALLY CONSTRAINED BY STRUCTURAL ADHESIVE[J]. Engineering Mechanics, 2021, 38(3): 122-131. DOI: 10.6052/j.issn.1000-4750.2020.04.0280
Citation: HUANG Xiao-kun, DUAN Shu-kun, LIU Qiang, CUI Ming-zhe, NIE Jian-guo. A STUDY ON THE DESIGN METHOD FOR AXIAL COMPRESSIVE RESISTANCE OF GLASS COLUMNS LATERALLY AND TORSIONALLY CONSTRAINED BY STRUCTURAL ADHESIVE[J]. Engineering Mechanics, 2021, 38(3): 122-131. DOI: 10.6052/j.issn.1000-4750.2020.04.0280

结构胶侧扭约束玻璃柱轴压承载力设计方法研究

A STUDY ON THE DESIGN METHOD FOR AXIAL COMPRESSIVE RESISTANCE OF GLASS COLUMNS LATERALLY AND TORSIONALLY CONSTRAINED BY STRUCTURAL ADHESIVE

  • 摘要: 玻璃柱在工程应用中的一种形式是采用结构胶将其与玻璃面板连接,结构胶对玻璃柱的约束效应能改善玻璃柱稳定性。考虑结构胶对玻璃柱的侧向弹簧约束及扭转弹簧约束作用,基于平衡方程推导了结构胶约束玻璃柱的轴压临界荷载公式,讨论了结构胶弹性模量及玻璃柱的柱高、截面高度、截面厚度对临界荷载的影响,发现结构胶弹性模量、玻璃截面厚度影响最为显著。基于等效刚度法将临界荷载公式推广至夹层玻璃柱。针对工程实践中常用的硅酮结构胶,提出了结构胶约束玻璃柱在轴压荷载作用下考虑玻璃开裂及结构胶破坏的承载力设计准则,并通过有限元模型计算验证了理论研究的合理性。

     

    Abstract: One form of glass columns in engineering application is that the columns are connected with glass panels through structural adhesive, where the stability of the columns can be improved by the constraint effects from the structural adhesive. Considering the lateral and torsional spring constraints of structural adhesive on the glass column, the critical load formula of the glass column under axial compression is derived based on equilibrium equations. The influences of the elastic modulus of structural adhesive, the height, section depth and section thickness of the glass column on the critical load are discussed. It is found that the elastic modulus of structural adhesive and the section thickness of the glass column influence the critical load most significantly. The critical load formula is then extended to laminated glass columns based on the equivalent stiffness method. For the structural silicone adhesive commonly used in engineering practice, the design criteria for the load resistance of the glass columns are derived with the consideration of glass cracking and adhesive failure. The rationality of the theoretical research is verified by FEM analysis.

     

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