摘要
因芜湖桥结合钢桁梁的设计需要 ,对 C5 0混凝土疲劳荷载作用下的弹性模量做了试验 ,研究了混凝土的持续弹性模量、瞬时弹性模量、残余应变随疲劳次数、应力水平和应力幅的变化情况以及残余应变的恢复情况 ,由此提出了几种活载作用下钢与混凝土的弹性模量比取值的处理方法 。
With the need of the design of Wuhu Yangtze River Bridge, the fatigue tests of C50 concrete have been done. The influence of fatigue cycles, stress amplitudes and stress levels upon the strain module of the concrete including the total strain module and the current strain module and the recover of the residual strains have been studied. Several methods to process the elastic modulus ratio of steel to concrete have been suggested.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2001年第3期76-81,共6页
Journal of the China Railway Society
基金
铁道部科技发展计划项目! (96G35- N- 0 7)
