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Steel-concrete combined section structure of cross beam between ribs of half-through arch bridge
The invention discloses a steel-concrete combined section structure of a cross beam between ribs of a half-through arch bridge. The steel-concrete combined section structure comprises concrete arch ribs, pre-embedded steel plates, anchor plates, shear nails, pre-embedded steel bars, prestressed anchor bars, the cross beam between the ribs, anchor sealing concrete, anchor sealing steel bars and the like. The steel cross beams are adopted as the inter-rib cross beams, compared with traditional concrete cross beams, the weight of the cross beams is greatly reduced, and transportation and hoisting are more convenient; by arranging the prestressed anchoring ribs, the shear nails and the embedded steel bars, the shear resistance of the joint surface can be remarkably improved, and the stability of the connecting part is effectively enhanced; the prestressed anchoring ribs are finish-rolled twisted steel ribs, and compared with prestressed steel strands, the finish-rolled twisted steel ribs have the advantages that connection and anchoring are easy and convenient, tensioning and anchoring are safe and reliable, and the quality is easy to control; spiral steel bars are arranged on the right side of the left anchor bearing plate and the left side of the pre-embedded steel plate, so that concrete under the anchor is restrained, concrete splitting is resisted, transverse deformation of concrete in a core area is limited, and the anti-cracking capacity and the ultimate bearing capacity of the concrete in an anchoring area are improved.
本发明公开了一种中承式拱桥肋间横梁钢混结合段构造，包括混凝土拱肋、预埋钢板、锚固板、剪力钉、预埋钢筋、预应力锚固筋、肋间横梁、封锚混凝土、封锚钢筋等。肋间横梁采用钢横梁，与传统混凝土横梁相比，横梁重量大大降低，运输吊装更加方便；通过设置预应力锚固筋、剪力钉和预埋钢筋，可显著提高结合面的抗剪能力，有效增强连接部位稳定性；预应力锚固筋采用精轧螺纹钢筋，相较于预应力钢绞线，具有连接、锚固简便、张拉锚固安全可靠、质量易控制等优点；在左锚垫板的右侧和预埋钢板的左侧设置螺旋钢筋，从而约束锚下混凝土地和抗混凝土劈裂，限制核心区混凝土的横向变形，提高锚固区混凝土的抗裂能力和极限承载能力。
Steel-concrete combined section structure of cross beam between ribs of half-through arch bridge
The invention discloses a steel-concrete combined section structure of a cross beam between ribs of a half-through arch bridge. The steel-concrete combined section structure comprises concrete arch ribs, pre-embedded steel plates, anchor plates, shear nails, pre-embedded steel bars, prestressed anchor bars, the cross beam between the ribs, anchor sealing concrete, anchor sealing steel bars and the like. The steel cross beams are adopted as the inter-rib cross beams, compared with traditional concrete cross beams, the weight of the cross beams is greatly reduced, and transportation and hoisting are more convenient; by arranging the prestressed anchoring ribs, the shear nails and the embedded steel bars, the shear resistance of the joint surface can be remarkably improved, and the stability of the connecting part is effectively enhanced; the prestressed anchoring ribs are finish-rolled twisted steel ribs, and compared with prestressed steel strands, the finish-rolled twisted steel ribs have the advantages that connection and anchoring are easy and convenient, tensioning and anchoring are safe and reliable, and the quality is easy to control; spiral steel bars are arranged on the right side of the left anchor bearing plate and the left side of the pre-embedded steel plate, so that concrete under the anchor is restrained, concrete splitting is resisted, transverse deformation of concrete in a core area is limited, and the anti-cracking capacity and the ultimate bearing capacity of the concrete in an anchoring area are improved.
本发明公开了一种中承式拱桥肋间横梁钢混结合段构造，包括混凝土拱肋、预埋钢板、锚固板、剪力钉、预埋钢筋、预应力锚固筋、肋间横梁、封锚混凝土、封锚钢筋等。肋间横梁采用钢横梁，与传统混凝土横梁相比，横梁重量大大降低，运输吊装更加方便；通过设置预应力锚固筋、剪力钉和预埋钢筋，可显著提高结合面的抗剪能力，有效增强连接部位稳定性；预应力锚固筋采用精轧螺纹钢筋，相较于预应力钢绞线，具有连接、锚固简便、张拉锚固安全可靠、质量易控制等优点；在左锚垫板的右侧和预埋钢板的左侧设置螺旋钢筋，从而约束锚下混凝土地和抗混凝土劈裂，限制核心区混凝土的横向变形，提高锚固区混凝土的抗裂能力和极限承载能力。
Steel-concrete combined section structure of cross beam between ribs of half-through arch bridge
一种中承式拱桥肋间横梁钢混结合段构造
PEI HUITENG (author) / YU BINGXING (author) / YU SHAOHUA (author) / WEI JIANHUA (author) / CHEN YE (author) / XIE QUN (author) / ZHAN SHAOWEI (author) / WU PENG (author) / LIU YUHUA (author) / HU HUOQUAN (author)
2023-05-05
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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