According to fatigue damage accumulation theory, test load of verified fatigue test on rail across beam and welded connections with integral joint of combined steel truss bridge was gotten.
依据疲劳损伤累积理论，确定了公轨两用钢桁桥轨道横梁与整体节点连接头验证性疲劳试验的试验荷载。
According to feature of bolted and welded steel truss beam, the reasonable model simplified and calculating method is presented.
根据栓焊钢桁梁的结构特点，提出结构模型的简化计算图式的处理方法。
Using a new material, the transverse wave Angle beam probes in ultrasonic testing of welds for steel space grid structures with welded joints are made.
通过采用一种新材料，制造出了用于焊接球节点钢网架焊缝超声波探伤的超声波横波斜探头。
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