Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Assembly type small box girder transverse reinforcing structure and construction method
The invention belongs to the field of prefabricated assembly type bridges, and particularly relates to an assembly type small box girder transverse reinforcing structure and a construction method. The method comprises the following steps: 1, an external prestressing tendon is tensioned; 2, the bridge deck pavement at the mounting position of a steel cross beam is chiseled away; 3, holes are formed in flanges and wet joints of small box girders; 4, a steel cross beam is mounted; 5, box girder trepanning concrete is reinjected, and chiseled-away second-stage pavement is laid; and 6, external prestress is relaxed, and reinforcement is completed. Compared with the prior art, the assembly type small box girder transverse reinforcing structure and the construction method have the advantages that the fabricated small box girders are transversely reinforced through the steel truss type cross beams, reinforcing loads can be relieved, disturbance to the cross sections of tensile areas of main girders can be reduced, meanwhile, the main girders can form a whole, and the main girders are transversely and uniformly stressed.
本发明属于预制装配式桥梁领域，尤其涉及一种装配式小箱梁横向加固构造及施工方法。包括如下步骤：步骤1：张拉体外预应力束；步骤2：凿除钢横梁安装位置处的桥面铺装；步骤3：在小箱梁翼缘及湿接缝处开洞；步骤4：安装钢横梁；步骤5：补注箱梁开孔混凝土、铺设凿除的二期铺装；步骤6：放松体外预应力，完成加固。与现有技术相比，本发明所述的装配式小箱梁横向加固构造及施工方法采用钢桁架式横梁横向加固装配式小箱梁，能够减轻加固荷载减少对主梁受拉区截面的扰动，同时能够使各主梁形成整体，主梁横向均匀受力。
Assembly type small box girder transverse reinforcing structure and construction method
The invention belongs to the field of prefabricated assembly type bridges, and particularly relates to an assembly type small box girder transverse reinforcing structure and a construction method. The method comprises the following steps: 1, an external prestressing tendon is tensioned; 2, the bridge deck pavement at the mounting position of a steel cross beam is chiseled away; 3, holes are formed in flanges and wet joints of small box girders; 4, a steel cross beam is mounted; 5, box girder trepanning concrete is reinjected, and chiseled-away second-stage pavement is laid; and 6, external prestress is relaxed, and reinforcement is completed. Compared with the prior art, the assembly type small box girder transverse reinforcing structure and the construction method have the advantages that the fabricated small box girders are transversely reinforced through the steel truss type cross beams, reinforcing loads can be relieved, disturbance to the cross sections of tensile areas of main girders can be reduced, meanwhile, the main girders can form a whole, and the main girders are transversely and uniformly stressed.
本发明属于预制装配式桥梁领域，尤其涉及一种装配式小箱梁横向加固构造及施工方法。包括如下步骤：步骤1：张拉体外预应力束；步骤2：凿除钢横梁安装位置处的桥面铺装；步骤3：在小箱梁翼缘及湿接缝处开洞；步骤4：安装钢横梁；步骤5：补注箱梁开孔混凝土、铺设凿除的二期铺装；步骤6：放松体外预应力，完成加固。与现有技术相比，本发明所述的装配式小箱梁横向加固构造及施工方法采用钢桁架式横梁横向加固装配式小箱梁，能够减轻加固荷载减少对主梁受拉区截面的扰动，同时能够使各主梁形成整体，主梁横向均匀受力。
Assembly type small box girder transverse reinforcing structure and construction method
一种装配式小箱梁横向加固构造及施工方法
WU YAN (Autor:in) / WANG BAOSHENG (Autor:in) / ZHANG LEI (Autor:in) / WU JIAJIA (Autor:in) / LIU ZHIHUA (Autor:in) / WANG LEI (Autor:in) / WANG XIAN'AN (Autor:in) / YUE PENGCHENG (Autor:in) / GUO XIAOPENG (Autor:in) / ZHAO XIAOJIN (Autor:in)
19.10.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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