真空玻璃的应力分析及强度设计

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (4): 1141-1147.

• “玻璃材料与玻璃技术”专题 • 上一篇下一篇

真空玻璃的应力分析及强度设计

刘小根^1,2, 齐爽¹, 孙与康²

1.中国建筑材料科学研究总院有限公司,绿色建筑材料国家重点实验室,北京 100024;
2.中国国检测试控股集团股份有限公司,北京 100024

收稿日期:2021-11-04 修回日期:2021-12-10 出版日期:2022-04-15 发布日期:2022-04-27
作者简介:刘小根(1976—),男,博士,教授级高工。主要从事玻璃材料力学性能及服役可靠性方面的研究。E-mail:lxg@ctc.ac.cn
基金资助:
国家自然科学基金(52072356);2019枣庄英才项目(ZZYF-01)

Stress Analysis and Strength Design of Vacuum Glazing

LIU Xiaogen^1,2, QI Shuang¹, SUN Yukang²

1. State Key Laboratory of Green Building Materials, China Building Materials Academy, Beijing 100024, China;
2. China Testing & Certification International Group Co., Ltd, Beijing 100024, China

Received:2021-11-04 Revised:2021-12-10 Online:2022-04-15 Published:2022-04-27

摘要/Abstract

摘要： 基于真空玻璃的典型结构特征,分析了大气压差、温差及风载荷作用下真空玻璃的应力分布特征,给出了最大弯曲拉应力定量计算公式。基于结构抗力设计方法,分析了长期和短期应力协同作用下真空玻璃的承载性能设计。结果表明,在给定基片厚度情况下,随着支撑物间距的增大,真空玻璃最大弯曲拉应力呈近似线性增长,在支撑物间距不变情况下,真空玻璃最大弯曲拉应力随基片厚度增大呈指数式下降趋势。温差引起的最大弯曲拉应力与玻璃基片厚度及长宽尺寸无关,但与膨胀系数有关,温差值与其引发的真空玻璃最大弯曲拉应力呈线性关系。相同条件下,真空玻璃抗风压性能弱于与其等厚度的单片玻璃。在长期和短期应力协同作用下,宜分别计算不同应力作用时间下真空玻璃的效应设计值进行校核。

关键词: 真空玻璃, 应力分布, 大气压差, 温差, 风载荷, 长期应力, 短期应力

Abstract: The stress distribution characteristic of vacuum glazing due to atmospheric pressure difference, temperature difference and wind load were analyzed according to its typical structure characteristics, and the quantitative calculation formulas of the maximum bending tensile stress were given in this work. The bearing capacity design of vacuum glazing under synergetic effect of long-term and short-term stress was analyzed based on the structural resistance design method. The results show that under the condition of given substrate thickness, the maximum bending tensile stress of vacuum glazing basically increases linearly with the increase of the support spacing. With a given support spacing, the maximum bending tensile stress of vacuum glazing decreases exponentially with the increase of the substrate thickness. The maximum bending tensile stress due to temperature difference is not related to the thickness, length and width of the glass substrate, but related to the expansion coefficient.There is a linear relationship between the temperature difference and the maximum bending tensile stress of vacuum glazing. Under the same conditions, the wind pressure resistance of vacuum glazing is not as good as that of plate glass with equal thickness.Under the synergetic effect of long-term and short-term stress, the design value of vacuum glazing effect under different stress action time should be calculated separately for verification.

Key words: vacuum glazing, stress distribution, atmospheric pressure difference, temperature difference, wind load, long-term stress, short-term stress

中图分类号:

TQ171

刘小根, 齐爽, 孙与康. 真空玻璃的应力分析及强度设计[J]. 硅酸盐通报, 2022, 41(4): 1141-1147.

LIU Xiaogen, QI Shuang, SUN Yukang. Stress Analysis and Strength Design of Vacuum Glazing[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(4): 1141-1147.

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真空玻璃的应力分析及强度设计

Stress Analysis and Strength Design of Vacuum Glazing

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