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A platform for research: civil engineering, architecture and urbanism
Through type plane bending steel arch bridge structure
The invention discloses a through type plane bending steel arch bridge structure which is characterized in that a bridge is composed of arch ribs, cross braces and arch foot areas, and a bridge plane is located at a road curve section; the axis of each arch rib is in a curve shape on the plane and the vertical face, the number of the arch ribs in the transverse bridge direction is two, and the two arch ribs are arranged in parallel or in an inwards-inclined mode in the longitudinal direction of the bridge. The transverse support is in a net shape on a horizontal projection plane and forms a truss structure with the two arch ribs; the arch foot areas are arranged between the tail ends of the arch ribs and the first cross brace, and the four arch foot areas are arranged in total; each arch foot area is of a box-type closed structure composed of arch foot area webs on the two side faces, arch foot area end plates on the end faces and internal stiffening plates, and the arch ribs and the steel beams are connected into a whole. The arch ribs and the net-shaped cross braces form a truss structure on the horizontal projection and jointly bear out-of-plane bending of the arch, and the bending moment of the arch in the transverse bridge direction is converted into axial force of the arch ribs and the cross braces; the arch springing section adopts a large arch springing area, the arch rib and the steel beam are connected into a whole, the supporting length of the arch rib is prolonged, and the bending moment of the arch springing in the transverse bridge direction is reduced.
本发明公开了一种下承式平面弯曲钢拱桥梁结构，桥梁由拱肋、横撑、拱脚区构成，桥梁平面位于道路曲线段；拱肋轴线在平面和立面上均呈曲线形状，拱肋横桥向数量为两片，两片拱肋沿桥梁纵向相互平行或内倾布置；横撑在水平投影面上呈网状形态、与两片拱肋形成桁架结构；拱脚区设置在拱肋末端至第一道横撑之间，共设置四个拱脚区；每个拱脚区由两侧面拱脚区腹板、端面的拱脚区端板和内部加劲板组成箱型封闭结构，将拱肋和钢梁联成整体。本发明拱肋和网状横撑在水平投影上形成桁架结构，共同承担拱的面外弯曲，将拱横桥向弯矩转换为拱肋和横撑的轴力；拱脚段采用大型拱脚区，将拱肋和钢梁联成整体，延长拱肋的支撑长度，降低拱脚的横桥向弯矩。
Through type plane bending steel arch bridge structure
The invention discloses a through type plane bending steel arch bridge structure which is characterized in that a bridge is composed of arch ribs, cross braces and arch foot areas, and a bridge plane is located at a road curve section; the axis of each arch rib is in a curve shape on the plane and the vertical face, the number of the arch ribs in the transverse bridge direction is two, and the two arch ribs are arranged in parallel or in an inwards-inclined mode in the longitudinal direction of the bridge. The transverse support is in a net shape on a horizontal projection plane and forms a truss structure with the two arch ribs; the arch foot areas are arranged between the tail ends of the arch ribs and the first cross brace, and the four arch foot areas are arranged in total; each arch foot area is of a box-type closed structure composed of arch foot area webs on the two side faces, arch foot area end plates on the end faces and internal stiffening plates, and the arch ribs and the steel beams are connected into a whole. The arch ribs and the net-shaped cross braces form a truss structure on the horizontal projection and jointly bear out-of-plane bending of the arch, and the bending moment of the arch in the transverse bridge direction is converted into axial force of the arch ribs and the cross braces; the arch springing section adopts a large arch springing area, the arch rib and the steel beam are connected into a whole, the supporting length of the arch rib is prolonged, and the bending moment of the arch springing in the transverse bridge direction is reduced.
本发明公开了一种下承式平面弯曲钢拱桥梁结构，桥梁由拱肋、横撑、拱脚区构成，桥梁平面位于道路曲线段；拱肋轴线在平面和立面上均呈曲线形状，拱肋横桥向数量为两片，两片拱肋沿桥梁纵向相互平行或内倾布置；横撑在水平投影面上呈网状形态、与两片拱肋形成桁架结构；拱脚区设置在拱肋末端至第一道横撑之间，共设置四个拱脚区；每个拱脚区由两侧面拱脚区腹板、端面的拱脚区端板和内部加劲板组成箱型封闭结构，将拱肋和钢梁联成整体。本发明拱肋和网状横撑在水平投影上形成桁架结构，共同承担拱的面外弯曲，将拱横桥向弯矩转换为拱肋和横撑的轴力；拱脚段采用大型拱脚区，将拱肋和钢梁联成整体，延长拱肋的支撑长度，降低拱脚的横桥向弯矩。
Through type plane bending steel arch bridge structure
一种下承式平面弯曲钢拱桥梁结构
HEI XUHAO (author) / QIAN CONG (author) / WU YILONG (author) / LUO XINYU (author) / XIA XUECHENG (author) / YING TIANYI (author) / HOU HEPING (author) / LI JIANHUA (author)
2024-01-23
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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