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A platform for research: civil engineering, architecture and urbanism
Tough combined bridge deck composed of cold-bent Z-shaped steel
The invention discloses a tough combined bridge deck composed of cold-bent Z-shaped steel. The tough combined bridge deck comprises cold-bent curled Z-shaped steel, transverse reinforcing steel bars and ultrahigh-toughness concrete. And the cold-bent Z-shaped steel is transversely and continuously placed along the bridge deck and forms bridge deck steel framework through fillet weld welding. The lower side flange of the cold-bent Z-shaped steel is long and plays a role in reinforcing the outer side of the plate surface; the upper side flange is short and is provided with a row of circular holes, and the transverse reinforcing steel bars penetrate through the cold-bent Z-shaped steel flanges through the circular holes. And the ultrahigh-toughness concrete is poured on the bridge deck steelskeleton to play a role in protecting the bridge deck steel skeleton. In the combined bridge deck slab system provided by the invention, the ultra-high toughness concrete can ensure that tiny cracks of below 100 microns are not generated or only generated, and the toughness and durability of the structure are improved; the construction mode of combining the cold-bent Z-shaped steel and the transverse reinforcing steel bars replaces the anti-shearing and anti-pulling effects of studs, meanwhile, the out-of-plane stability of the bridge deck slab is improved, the material cost and the construction complexity are remarkably reduced, and the fatigue performance is excellent.
本发明公开了一种冷弯Z形钢组成的韧性组合桥面板，包括冷弯卷边Z形钢、横向钢筋、超高韧性混凝土。冷弯Z形钢沿桥面横向连续放置且通过角焊缝焊接形成桥面钢骨架。冷弯Z形钢下侧翼缘较长，起到板面外加劲作用；上侧翼缘较短且其上开有一排圆孔，横向钢筋通过圆孔穿过各冷弯Z形钢翼缘。超高韧性混凝土浇筑在桥面钢骨架上，起到保护桥面钢骨架的作用。本发明提出的组合桥面板体系中，超高韧性混凝土可保证不产生或仅产生100微米以下的微小裂缝，提升结构的韧性和耐久性；冷弯Z形钢与横向钢筋相结合的构造方式替代了栓钉的抗剪和抗拔作用，同时提升了桥面板的面外稳定性，显著降低材料成本和施工复杂度，且疲劳性能优越。
Tough combined bridge deck composed of cold-bent Z-shaped steel
The invention discloses a tough combined bridge deck composed of cold-bent Z-shaped steel. The tough combined bridge deck comprises cold-bent curled Z-shaped steel, transverse reinforcing steel bars and ultrahigh-toughness concrete. And the cold-bent Z-shaped steel is transversely and continuously placed along the bridge deck and forms bridge deck steel framework through fillet weld welding. The lower side flange of the cold-bent Z-shaped steel is long and plays a role in reinforcing the outer side of the plate surface; the upper side flange is short and is provided with a row of circular holes, and the transverse reinforcing steel bars penetrate through the cold-bent Z-shaped steel flanges through the circular holes. And the ultrahigh-toughness concrete is poured on the bridge deck steelskeleton to play a role in protecting the bridge deck steel skeleton. In the combined bridge deck slab system provided by the invention, the ultra-high toughness concrete can ensure that tiny cracks of below 100 microns are not generated or only generated, and the toughness and durability of the structure are improved; the construction mode of combining the cold-bent Z-shaped steel and the transverse reinforcing steel bars replaces the anti-shearing and anti-pulling effects of studs, meanwhile, the out-of-plane stability of the bridge deck slab is improved, the material cost and the construction complexity are remarkably reduced, and the fatigue performance is excellent.
本发明公开了一种冷弯Z形钢组成的韧性组合桥面板，包括冷弯卷边Z形钢、横向钢筋、超高韧性混凝土。冷弯Z形钢沿桥面横向连续放置且通过角焊缝焊接形成桥面钢骨架。冷弯Z形钢下侧翼缘较长，起到板面外加劲作用；上侧翼缘较短且其上开有一排圆孔，横向钢筋通过圆孔穿过各冷弯Z形钢翼缘。超高韧性混凝土浇筑在桥面钢骨架上，起到保护桥面钢骨架的作用。本发明提出的组合桥面板体系中，超高韧性混凝土可保证不产生或仅产生100微米以下的微小裂缝，提升结构的韧性和耐久性；冷弯Z形钢与横向钢筋相结合的构造方式替代了栓钉的抗剪和抗拔作用，同时提升了桥面板的面外稳定性，显著降低材料成本和施工复杂度，且疲劳性能优越。
Tough combined bridge deck composed of cold-bent Z-shaped steel
一种冷弯Z形钢组成的韧性组合桥面板
XU SHILANG (author) / TONG JINGZHONG (author) / LI QINGHUA (author)
2021-01-15
Patent
Electronic Resource
Chinese
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