Experimental Study on Fatigue Behavior and Study on Cracking Mechanism in the Crossbeam Region of Novel Key Hole Open-rib Orthotropic Steel Decks新型开肋正交异性钢桥面板腹板区域疲劳行为与裂纹形成机理的实验研究Thin-Walled StructuresIF6.62025-07-150PRE