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A platform for research: civil engineering, architecture and urbanism
Profiled steel sheet-ultrahigh toughness concrete combined bridge deck
The invention discloses a profiled steel sheet-ultrahigh toughness concrete combined bridge deck which comprises profiled steel sheets, round steel bars and ultrahigh toughness concrete. Round holes are formed in a rib web of each profiled steel sheet at equal intervals, and the round steel bars transversely penetrate through the round holes to form a bridge deck steel framework. The ultrahigh toughness concrete is poured on the bridge deck steel framework to play a role in protecting the bridge deck steel framework. According to the invention, the corrugated shape and the mechanical property of the profiled steel sheet enable the profiled steel sheet not to be additionally welded with longitudinal and transverse stiffening ribs, so that the fatigue performance of the structure is greatly improved while the construction complexity is reduced; and the transverse bending capacity of the combined bridge deck is improved through the round steel bars, the stress mode is changed from one-way stress to two-way stress, and meanwhile the round steel bars and the inter-hole steel plates jointly achieve the shear force connection and pulling resistance effects. The ultrahigh toughness concrete can ensure that no or only small cracks of 100 microns or below are generated, the use requirement of a reinforcing mesh is effectively avoided, the use amount is small, and the toughness and durability of the structure are improved.
本发明公开了一种压型钢板‑超高韧性混凝土组合桥面板，包括压型钢板、圆钢棒、超高韧性混凝土。在压型钢板板肋腹板上等间距开设圆孔，将圆钢棒沿横向穿过圆孔，成为桥面钢骨架。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。本发明中，压型钢板本身的波纹形状和力学特性使其无需额外焊接纵、横向加劲肋，降低施工复杂度的同时大幅提高了结构的疲劳性能；圆钢棒提高了组合桥面板的横向受弯能力，受力模式由单向受力变成双向受力，同时也与孔间钢板共同起到剪力连接和抗拔作用；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，有效规避了钢筋网的使用需求且用量少，提升了结构的韧性和耐久性。
Profiled steel sheet-ultrahigh toughness concrete combined bridge deck
The invention discloses a profiled steel sheet-ultrahigh toughness concrete combined bridge deck which comprises profiled steel sheets, round steel bars and ultrahigh toughness concrete. Round holes are formed in a rib web of each profiled steel sheet at equal intervals, and the round steel bars transversely penetrate through the round holes to form a bridge deck steel framework. The ultrahigh toughness concrete is poured on the bridge deck steel framework to play a role in protecting the bridge deck steel framework. According to the invention, the corrugated shape and the mechanical property of the profiled steel sheet enable the profiled steel sheet not to be additionally welded with longitudinal and transverse stiffening ribs, so that the fatigue performance of the structure is greatly improved while the construction complexity is reduced; and the transverse bending capacity of the combined bridge deck is improved through the round steel bars, the stress mode is changed from one-way stress to two-way stress, and meanwhile the round steel bars and the inter-hole steel plates jointly achieve the shear force connection and pulling resistance effects. The ultrahigh toughness concrete can ensure that no or only small cracks of 100 microns or below are generated, the use requirement of a reinforcing mesh is effectively avoided, the use amount is small, and the toughness and durability of the structure are improved.
本发明公开了一种压型钢板‑超高韧性混凝土组合桥面板，包括压型钢板、圆钢棒、超高韧性混凝土。在压型钢板板肋腹板上等间距开设圆孔，将圆钢棒沿横向穿过圆孔，成为桥面钢骨架。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。本发明中，压型钢板本身的波纹形状和力学特性使其无需额外焊接纵、横向加劲肋，降低施工复杂度的同时大幅提高了结构的疲劳性能；圆钢棒提高了组合桥面板的横向受弯能力，受力模式由单向受力变成双向受力，同时也与孔间钢板共同起到剪力连接和抗拔作用；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，有效规避了钢筋网的使用需求且用量少，提升了结构的韧性和耐久性。
Profiled steel sheet-ultrahigh toughness concrete combined bridge deck
一种压型钢板-超高韧性混凝土组合桥面板
XU ZHAO (author) / LI HUAIFENG (author) / CHEN GUOHONG (author) / HE PAN (author) / XU SHILANG (author) / TONG JINGZHONG (author) / LI QINGHUA (author) / WANG GUOZHONG (author)
2021-06-08
Patent
Electronic Resource
Chinese
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