不锈钢芯板一字形墙单向压弯稳定承载力研究

廖莎; 李洲; 舒兴平

doi:10.13204/j.gyjz202002009

不锈钢芯板一字形墙单向压弯稳定承载力研究

doi: 10.13204/j.gyjz202002009

湖南大学土木工程学院钢结构研究所, 长沙 410082

详细信息

作者简介:
廖莎,女,1962年出生,副教授,硕士生导师。电子信箱:783988571@qq.com

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出版历程
- 收稿日期: 2019-10-20

RESEARCH ON THE STABILITY BEARING CAPALITY OF THE IN-LINE WALL OF THE STRUCTURE OF STAINLESS STEEL SANDWICH PANEL UNDER ONE-WAY COMPRESSION AND BENDING

Steel Structural Institute of Civil Engineering College, Hunan University, Changsha 410082, China

摘要

摘要: 不锈钢芯板一字形墙是由两片不锈钢面板及正交均匀排列的不锈钢芯管组成，芯管与面板之间的连接采用铜钎焊焊接。为研究不锈钢芯板一字形墙的压弯稳定性能，首先，进行了有限元特征值屈曲分析，得到了计算一字形墙弹性屈曲荷载及相应的正则化高宽比λ_n的计算式；通过有限元非线性分析，研究其受力过程和破坏机理，分析了高宽比、面板厚度、芯管外径、芯管壁厚以及芯管分布间距等参数变化对不锈钢芯板一字形墙压弯稳定承载力的影响，得到了轴心受压稳定系数φ_N与纯弯稳定系数φ_M，以及进行稳定设计的φ_N、φ_M-λ_n曲线；建立在可靠的有限元建立方法上，设计了3组不锈钢芯板一字形墙有限元模型，并对其压弯稳定承载力进行了有限元模拟研究。结果表明，计算式计算的构件承载力偏于安全。
- 不锈钢芯板 /
- 一字形截面 /
- 单向压弯 /
- 稳定性设计 /
- ABAQUS有限元模拟
Abstract: The in-line wall of the structure of stainless steel sandwich panel is composed of two stainless steel panels and orthogonally arranged stainless steel core tubes. The connection between the core tube and the panel was brazed by copper. In the paper, the stability of the in-line wall of the structure of stainless steel sandwich panel under compression and bending was studied.Firstly, the finite element eigenvalue buckling analysis was carried out, and the formula for calculating the elastic buckling load of the in-line wall and the corresponding regularized aspect ratio λ_n was obtained. The finite element nonlinear analysis was used to study the stress process and failure mechanism. The influence of parameters such as aspect ratio, panel thickness, outer diameter of core tube, wall thickness of core tube and distribution distance of core tubes on the stability bearing capacity of the in-line wall of the structure of stainless steel sandwich panel was obtained, as well as the stability coefficient of axial compression φ_N and pure bending stability coefficient φ_M, and the φ_N -λ_n and φ_M-λ_n curves for stable design were established. Based on the reliable finite element method of in-line wall of stainless steel sandwich panel were designed, and the stability bearing capacity under compression and bending was studied by finite element simulation. The results showed that the design formula could calculate the bearing capacity of the component safely.
- the structure of stainless steel sandwich panel /
- in-line section /
- one-way compression and bending /
- stability design /
- ABAQUS finite element simulation

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