点支式中空钢化玻璃板疲劳性能试验研究  

Fatigue Performance of Point-supported Insulated Tempered Glass Panels Under Cyclic Loading

作　　者：李海云[1,2] 舒赣平[3] 卢瑞华[3] 李玉学[1,2] 

机构地区：[1]石家庄铁道大学土木工程学院,河北石家庄050043 [2]石家庄铁道大学道路与铁道工程安全保障省部共建教育部重点实验室,河北石家庄050043 [3]东南大学混凝土与预应力混凝土结构教育部重点实验室,江苏南京210096

出　　处：《应用基础与工程科学学报》2017年第3期546-557,共12页Journal of Basic Science and Engineering

基　　金：国家自然科学基金资助项目(51278314);河北省自然科学基金(E2012210002);河北省高等学校重点学科项目资助

摘　　要：为了研究点支承中空钢化玻璃板的疲劳性能,对3组不同类别的中空钢化玻璃板分别进行集中荷载作用下的静载和疲劳试验.其中疲劳试验分常幅疲劳试验和变幅疲劳试验.疲劳试验结果显示疲劳破坏现象同静载破坏非常相似,都是由上层钢化玻璃片的破坏引起的,破坏时没有任何预兆.常幅疲劳和变幅疲劳试验数据之间的差别也不明显,对4点支承钢化玻璃板,无论采用常幅疲劳试验还是变幅疲劳试验,绝大部分试件是在1万次以内发生破坏,只有极少部分试件的疲劳寿命在1万次以上,但也都小于5万次.根据4点支承中空钢化玻璃板的疲劳试验,可以认为疲劳寿命5万次时的循环最大应力值为钢化玻璃的条件疲劳极限.Static and fatigue tests on three different styles of insulated tempered glass panels under concentrated loading have been carried out in order to investigate its fatigue performance. Fatigue tests were composed of constant amplitude and variable amplitude fatigue tests. The fatigue tests results showed that the fatigue failure of specimens almost always occurred on the upper insulated tempered glass accompanied by the suddenly destruction which was very similar to static failure. Strains of the specimens were measured during the fatigue tests and the test data indicated that there was no obvious difference between constant amplitude and variable amplitude fatigue tests. The experimental results revealed that almost all specimens failed in the fatigue tests have experienced no more than 10 000 cycles. Only a few specimens have experienced more than 10 000 cycles but withstood no more than 50 000 cycles, this means that the maximum stress of 50 000 cycles can be defined as the fatigue strength of the tempered glass panel.

关 键 词：中空钢化玻璃板 常幅疲劳试验 变幅疲劳试验 疲劳强度 

分 类 号：TU382[建筑科学—结构工程] TU317.2