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A platform for research: civil engineering, architecture and urbanism
Overwater large-span tied-arch bridge girder dismantling structure and dismantling construction method
The invention discloses an overwater large-span tied-arch bridge girder dismantling structure and a dismantling construction method, and belongs to the technical field of arch bridge construction. Comprising a main beam bearing system and a main beam hoisting system, and the main beam hoisting system is arranged between an arch bridge main beam and an auxiliary bridge; the main beam bearing system is responsible for main bearing of a bridge in the dismantling process, and the main beam is hoisted to assist in dismantling through an overwater gantry crane; the method comprises the following main dismantling steps: S00, construction preparation; s10, arranging a main beam bearing system; s20, arranging a main beam hoisting system; s30, a cutting system is arranged; s40, a bridge deck system and ancillary facilities are dismantled; and S50, the main beam is dismantled. According to the method, complex environments that old bridges are located in dense residential areas of old cities, local traffic is complex and navigable water areas are comprehensively considered. A steel pipe support is adopted as a bearing system when the main beam is dismantled, an overwater gantry crane is adopted as a hoisting system when the main beam is dismantled, a rope saw cutting technology is adopted as a main beam block cutting method, and the method is high in adaptability and small in influence on the surroundings during construction.
本发明公开了一种水上大跨度系杆拱桥主梁拆除结构及拆除施工方法，属于拱桥施工技术领域。包括主梁承重系统和主梁起吊系统，所述主梁起吊设置于拱桥主梁与辅桥之间；通过主梁承重系统负责在拆除过程中对桥梁的主要承重，所述主梁起吊通过水上龙门吊辅助拆除；主要拆除步骤为：S00：施工准备；S10：主梁承重系统布置；S20：主梁起吊系统布置；S30：切割系统布置；S40：桥面系及附属设施拆除；S50：主梁拆除。本发明综合考虑旧桥位于老城区密集居民区、地方交通复杂、通航水域上的复杂环境。采用钢管支架作为主梁拆除时的承重系统，水上龙门吊作为主梁拆除时的起吊系统，绳锯切割技术作为主梁分块切割方法，本方法适应性较大，施工时对周围的影响较小。
Overwater large-span tied-arch bridge girder dismantling structure and dismantling construction method
The invention discloses an overwater large-span tied-arch bridge girder dismantling structure and a dismantling construction method, and belongs to the technical field of arch bridge construction. Comprising a main beam bearing system and a main beam hoisting system, and the main beam hoisting system is arranged between an arch bridge main beam and an auxiliary bridge; the main beam bearing system is responsible for main bearing of a bridge in the dismantling process, and the main beam is hoisted to assist in dismantling through an overwater gantry crane; the method comprises the following main dismantling steps: S00, construction preparation; s10, arranging a main beam bearing system; s20, arranging a main beam hoisting system; s30, a cutting system is arranged; s40, a bridge deck system and ancillary facilities are dismantled; and S50, the main beam is dismantled. According to the method, complex environments that old bridges are located in dense residential areas of old cities, local traffic is complex and navigable water areas are comprehensively considered. A steel pipe support is adopted as a bearing system when the main beam is dismantled, an overwater gantry crane is adopted as a hoisting system when the main beam is dismantled, a rope saw cutting technology is adopted as a main beam block cutting method, and the method is high in adaptability and small in influence on the surroundings during construction.
本发明公开了一种水上大跨度系杆拱桥主梁拆除结构及拆除施工方法，属于拱桥施工技术领域。包括主梁承重系统和主梁起吊系统，所述主梁起吊设置于拱桥主梁与辅桥之间；通过主梁承重系统负责在拆除过程中对桥梁的主要承重，所述主梁起吊通过水上龙门吊辅助拆除；主要拆除步骤为：S00：施工准备；S10：主梁承重系统布置；S20：主梁起吊系统布置；S30：切割系统布置；S40：桥面系及附属设施拆除；S50：主梁拆除。本发明综合考虑旧桥位于老城区密集居民区、地方交通复杂、通航水域上的复杂环境。采用钢管支架作为主梁拆除时的承重系统，水上龙门吊作为主梁拆除时的起吊系统，绳锯切割技术作为主梁分块切割方法，本方法适应性较大，施工时对周围的影响较小。
Overwater large-span tied-arch bridge girder dismantling structure and dismantling construction method
一种水上大跨度系杆拱桥主梁拆除结构及拆除施工方法
WAN CHENGFU (author) / DENG CHAOYOU (author) / DU PENGLIANG (author) / HUANG ZHIMENG (author) / WANG XINMING (author) / LONG GUOHUI (author) / WANG CHAOFENG (author) / WEN QIFU (author)
2022-03-04
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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