Construction method of in-situ assembled steel structure main bridge spanning riverway and adopting first beam and second arch

• Main Authors: HE YONGBIN, TONG LIGANG, WANG HU, ZHAO BIN, ZHANG GUANGMING, WANG HONGGANG, ZHANG TIAN, LUO XIAODE, GU FAN, LI CHENG, ZHANG WEIBIN, XIN PENG, SHEN JIE, BI ZHANGLONG, ZHAO JING, CHEN QINGYUN, XUAN XINPENG
• Format: Patent
• Language: Chinese; English
• Published: 04.06.2024
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; OR VIADUCTS

The invention discloses a construction method of a beam-first arch-second in-situ assembled steel structure main bridge crossing a river channel, and relates to the technical field of bridge construction. The construction method comprises the following construction steps of: hoisting east and west side arched beam combination section sections, end cross beam sections, cantilever end cross beam sections and arch foot sections; bridge deck steel beam sections are assembled at bridge sites, and then the bridge deck steel beam sections are assembled until bridge deck steel beams are constructed to be closed; the auxiliary arch rib sections and the main arch rib sections are installed, and then the inter-arch decoration sections are installed; after the auxiliary arch rib sections and the main arch rib sections are installed, the main wind braces are installed, and then the decorative wind braces and the auxiliary wind braces are hoisted; after the arch rib structure is installed, suspenders are installed; dismant