【摘要】 通过三片模拟梁试验实测结果，探讨了基频法评估铁路桥梁疲劳使用性能的可行性。试验结果表明，２５ｔ轴重荷载作用下，结构疲劳安全度及使用性能满足营运要求更多还原

【Abstract】 The first frequency method of estimating the fatigue serviceability on small and medium span railway concrete bridge is discussed in this paper through three piece test beam under fatigue load. The test results show that the existing railway concrete bridges have enough fatigue safety and good serviceability in their service life under 25 t axle weight vehicle load .更多还原