摘要
本文通过对25根部分预应力模拟试验梁进行静载和等幅疲劳试验,探讨了不同预应力度梁的刚度和挠度的变化规律,分析了主要影响因素,并提出了能反映预应力度大小和疲劳循环次数的刚度和挠度增量的建议计算方法,且与试验结果符合较好。
Based on the test results of twenty-five PPC simulated test beams understatic and fatigue loading, the thesis treats of the law of change aboutstiffness and deflection. It also analyses the primary factor influencing stiffnessand deflection. The predicting methods including the panameters of prestressdegree and fatigue cycle number are proposed and all the calculated valuesagree well with the measured ones.
出处
《交通科学与工程》
1990年第4期59-68,共10页
Journal of Transport Science and Engineering
关键词
部分预应力
刚度
挠度
疲劳试验
疲劳荷载
预应力度
循环次数
partially prestress
stiffness
deflection
fatigue test
fatigue loading
degree of prestress
cycle number
