Construction method of steel truss girder arch bridge

• Main Authors: YAO FAHAI, MAO WEIQI, TU MANMING, XU JUNHUI, ZOU GUAN, XU JIHOU, WAN HUI, GENG HAO, YE QINGHAN, CUI QINGHUI, ZHU YUNPING, WANG CHANGHUA, ZHANG ZHIRUI, HU JIE, CHENG JIAYUAN, WAN CHENGGANG, ZHOU GONGJIAN
• Format: Patent
• Language: Chinese; English
• Published: 02.05.2023
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; OR VIADUCTS

The invention relates to a construction method of a steel truss girder arch bridge. The construction method comprises the following steps: erecting a main girder; erecting an assembling bracket and a lifting bracket on the main beam; arch springing sections and a central section are formed on the assembling support in an assembling mode; the central segment is lifted to the designed height through the lifting support; and closing the arch foot sections and the central section to form the bridge arch rib. A high lifting support or an assembling support does not need to be built, the support building cost is reduced, meanwhile, channel passing or high-altitude assembling cannot be affected, the application range is wider, and safety is higher. 本发明涉及提供了一种钢桁梁拱桥的施工方法，其包括以下步骤：架设主梁；在所述主梁上架设拼装支架以及提升支架；在所述拼装支架上拼装形成拱脚节段以及中央节段；通过所述提升支架将所述中央节段提升至设计高度；将所述拱脚节段与所述中央节段合龙形成桥梁拱肋。既不需要搭建很高的提升支架或拼装支架，降低了搭建支架的成本，同时不会影响航道通行或高空拼装，适用范围更广，安全性更高。