摘要
玻璃板在风荷载作用下易发生脆性疲劳破坏,研究其疲劳性能对实际玻璃幕墙设计有指导作用。该文对点支式单层和夹层玻璃板单元的足尺模型进行了高频疲劳试验。在幕墙规范和静载试验的基础上,确定了点支式玻璃的疲劳应力幅值,以大面中心主应力为控制应力制定出疲劳荷载取值,对单层和夹层2组玻璃模型进行了大面中心集中力单点加载疲劳试验。结果表明:在疲劳循环200万次后,试件及其连接均未出现断裂。在疲劳加载后的静载破坏试验中发现:2组玻璃的极限抗弯承载力几乎没有减弱。试验表明:工程中应用的单层和夹层点支式玻璃具有良好的抗疲劳性能。
Brittle fatigue failure, which easily occurs in glass plates with wind loads, must be well understood for glass curtain wall designs. This paper describes high frequency fatigue tests on single layer and laminated glass panels. The fatigue stress amplitudes were determined according to the current codes as well as in static loading tests. The maximum stress at the center of the glass panel was used to quantify the applied fatigue load by a loading test. The test results show no fatigue after 2 million-cycle loading. The remaining static strength after the fatigue tests showed no strength reduction after the 2 million cycle loadings. The experiments show that point-supported single layer and laminated glass panels both have adequate fatigue capacity.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第3期346-350,共5页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金资助项目(90815004)
KGE科学研究基金资助项目(200504)
关键词
点支式玻璃板
静载破坏试验
高频疲劳试验
疲劳性能
应力幅
point supporting glass faceplate
static load destructivetesting
high-frequency fatigue testing
fatigueproperties
rate of stress
