钢桁梁桥是将实腹的钢板梁桥按照一定规则空腹化的结构形式，结构整体上为梁的受力方式，即主要承受弯矩和剪力的结构。由制动联结系、桥面、支座及桥墩（桥台）组成。
... steel truss girder bridge 钢桁梁桥 steel truss stiffening girder 高性能钢 middle-through steel truss girder 半穿式钢桁梁 ...
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To the long span steel truss bridge, joint fatigue damage is the main-type destroys.
对于大跨度钢桁梁桥，节点疲劳破坏是最主要的破坏形式。
参考来源 - 轨道栋梁与整体节点联接疲劳性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
算例说明，应用近似计算式将使三线钢桁梁桥的疲劳检算变得简单、方便。
Calculation example shows that fatigue check and computation of steel truss bridge becomes simpler and more convenient by employing approximate formula.
结果表明：在钢桁梁桥弦杆内填混凝土能降低杆件的应力水平，提高桥梁的整体刚度。
The results show that the stresses of chord members of partially concrete-filled steel truss bridge are decreased, while its integral stiffness is increased.
该研究思路和方法也为四线钢桁梁桥及更多线钢桁梁桥的疲劳检算多线系数研究提供依据。
The research ideas as well as (approaches) have provided useful reference of multiple-line coefficient for fatigue check and computation of four-line and multiple-line steel truss bridge.
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