螺栓球与圆钢管组合试件的超低周疲劳试验研究  

Research on Ultra-low Cycle Fatigue Testing of Bolt Ball and Circular Steel Pipe Composite Specimens

作　　者：张洁 宋夏芸[1,2] 李卫文 杜雷鸣 李海旺 ZHANG Jie;SONG Xia-yun;LI Wei-wen;DU Lei-ming;LI Hai-wang(Shanxi Engineering Vocational College,Taiyuan,Shanxi,030009,China;School of Civil Engineering,Taiyuan University of Technology,Taiyuan,Shanxi,030024,China)

机构地区：[1]山西工程职业学院,山西太原030009 [2]太原理工大学土木工程学院,山西太原030024

出　　处：《建材技术与应用》2024年第3期37-41,共5页Research and Application of Building Materials

基　　金：山西省青年基金项目(202303021212307);山西省青年基金项目(202203021222335)。

摘　　要：随着社会经济的发展,越来越多的大跨度空间网格结构成为城市避难场所,因而强震下空间网格结构的安全性显得尤为重要。为研究螺栓球与圆钢管组合试件的超低周疲劳性能,对其进行了超低周疲劳试验,获得了组合试件超低周疲劳破坏形态的相关数据。试验数据表明:构件在整体失稳的情况下仍表现出稳定的滞回性能。对比分析了9种螺栓直径对试件滞回性能、骨架曲线和刚度退化的影响。With the development of social economy,more and more large-span spatial grid structures have become urban shelters,so the safety of spatial grid structures under strong earthquakes is particularly important.To study the ultra-low cycle fatigue performance of bolted ball and circular steel pipe composite specimens,ultra-low cycle fatigue tests were conducted,and relevant data on the ultra-low cycle fatigue failure mode of the composite specimens were obtained.The experimental data shows that the components still exhibit stable hysteresis performance despite overall instability.A comparative analysis was conducted on the effects of 9 bolt diameters on the hysteresis performance,skeleton curve,and stiffness degradation of specimens.The research on the ultra-low cycle fatigue performance of bolted ball node mesh structures has certain reference significance.

关 键 词：网格结构 超低周疲劳试验 滞回性能 骨架曲线 

分 类 号：TU399[建筑科学—结构工程]