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A platform for research: civil engineering, architecture and urbanism
Construction method for overlapping steel truss girder on main girder of bridge
The invention provides a construction method for overlapping a bridge girder with a steel truss girder. The construction method comprises the following steps that the steel truss girder is set up; a plurality of node steel mechanisms are pre-buried on a midspan bridge deck slab on the concrete main beam; and the bridge deck joints of the steel truss beams are fixedly connected with the joint steel mechanism. The node steel mechanism is pre-embedded in the midspan bridge deck of the concrete main beam, and the steel truss beam is mounted, so that a structural system in which the concrete main beam and the steel truss beam are stressed together is formed, and the concrete main beam and the steel truss beam bear the bending moment generated under the action of the self-weight of the bridge and the rail vehicle together; the strength and rigidity of the bridge girder structure are improved, the midspan downwarping value of the concrete track bridge is effectively reduced, the deflection value of the concrete girder meets the limiting value requirements of all industries, the later creep deformation of the concrete bridge can be effectively reduced through the structure, and the comfort and safety of running of a track train are improved.
本发明提出了一种桥梁主梁叠合钢桁架梁的施工方法，包括以下步骤：搭建钢桁架梁；在混凝土主梁上的中跨桥面板上预埋多个节点钢机构；将钢桁架梁的桥面节点与节点钢机构固定连接。本发明通过在混凝土主梁的中跨桥面板上预埋节点钢机构，安装钢桁架梁，形成了混凝土主梁与钢桁架梁共同受力的结构体系，使得混凝土主梁和钢桁架梁共同承受桥梁自重和轨道车辆作用下产生的弯矩，提升了桥梁主梁结构的强度和刚度，有效地减小混凝土轨道桥梁中跨下挠值，使得混凝土主梁的挠度值满足各行业限值要求，该结构还能有效地减小了混凝土桥梁的后期徐变变形，提升了轨道列车运行的舒适度和安全性。
Construction method for overlapping steel truss girder on main girder of bridge
The invention provides a construction method for overlapping a bridge girder with a steel truss girder. The construction method comprises the following steps that the steel truss girder is set up; a plurality of node steel mechanisms are pre-buried on a midspan bridge deck slab on the concrete main beam; and the bridge deck joints of the steel truss beams are fixedly connected with the joint steel mechanism. The node steel mechanism is pre-embedded in the midspan bridge deck of the concrete main beam, and the steel truss beam is mounted, so that a structural system in which the concrete main beam and the steel truss beam are stressed together is formed, and the concrete main beam and the steel truss beam bear the bending moment generated under the action of the self-weight of the bridge and the rail vehicle together; the strength and rigidity of the bridge girder structure are improved, the midspan downwarping value of the concrete track bridge is effectively reduced, the deflection value of the concrete girder meets the limiting value requirements of all industries, the later creep deformation of the concrete bridge can be effectively reduced through the structure, and the comfort and safety of running of a track train are improved.
本发明提出了一种桥梁主梁叠合钢桁架梁的施工方法，包括以下步骤：搭建钢桁架梁；在混凝土主梁上的中跨桥面板上预埋多个节点钢机构；将钢桁架梁的桥面节点与节点钢机构固定连接。本发明通过在混凝土主梁的中跨桥面板上预埋节点钢机构，安装钢桁架梁，形成了混凝土主梁与钢桁架梁共同受力的结构体系，使得混凝土主梁和钢桁架梁共同承受桥梁自重和轨道车辆作用下产生的弯矩，提升了桥梁主梁结构的强度和刚度，有效地减小混凝土轨道桥梁中跨下挠值，使得混凝土主梁的挠度值满足各行业限值要求，该结构还能有效地减小了混凝土桥梁的后期徐变变形，提升了轨道列车运行的舒适度和安全性。
Construction method for overlapping steel truss girder on main girder of bridge
一种桥梁主梁叠合钢桁架梁的施工方法
ZHAO YINRU (author) / WU WEIXING (author) / ZHANG TIEJUN (author) / WU LIANG (author)
2022-03-22
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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