A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method for additionally arranging cantilever outrigger on existing bridge pier and abutment
The invention discloses a construction method for additionally arranging a cantilever outrigger on a bridge abutment, and relates to the technical field of bridge engineering. The existing structural steel bars are planted through the bridge-attached scaffold, and drilling, steel bar planting, maintenance and curing are conducted on the end face of a bridge pier and abutment; then drilling holes in the side surface of the bridge abutment and mounting finish-rolled twisted steel bars and common steel bars; external prestressed steel beams are used for reinforcing, the prestressed steel beams are pre-embedded in the two sides of the bridge pier and abutment, and concrete is poured to form anchoring blocks and cantilever outriggers; the finish rolling twisted steel is tensioned so that the bridge pier and abutment can be pressed by the anchoring blocks on the two sides; the prestressed steel beams are tensioned, so that the contact surface position of the cantilever outrigger and the new and old concrete of the bridge pier and abutment is in a total cross-section compression state; the cantilever outrigger is additionally arranged on the existing bridge abutment to serve as a supporting point of the pipeline truss bridge, so that the engineering material cost and the construction measure cost of a newly-built pile foundation pier column are saved, the engineering construction cost is greatly reduced, the construction period is shortened, and remarkable engineering economic benefits are achieved.
本发明公开了一种桥梁墩台增设悬臂挑梁的施工方法，涉及桥梁工程技术领域，桥梁墩台外侧搭设附桥式脚手架；通过附桥式脚手架进行既有结构钢筋植筋,对桥梁墩台端面进行钻孔，植筋并养护固化；之后从桥梁墩台侧面钻孔并安装精轧螺纹钢筋与普通钢筋；体外预应力钢束加固,桥梁墩台两侧预埋预应力钢束，浇筑混凝土形成锚固块与悬臂挑梁；张拉精轧螺纹钢筋以使得桥梁墩台被两侧锚固块压紧；张拉预应力钢束以使得悬臂挑梁与桥梁墩台新旧混凝土接触面位置处于全截面受压状态；利用既有桥梁墩台增设悬臂挑梁，作为管线桁架桥的支撑点，节省新建桩基墩柱的工程材料费及施工措施费，大幅降低工程建设成本、节约施工工期，具有显著的工程经济效益。
Construction method for additionally arranging cantilever outrigger on existing bridge pier and abutment
The invention discloses a construction method for additionally arranging a cantilever outrigger on a bridge abutment, and relates to the technical field of bridge engineering. The existing structural steel bars are planted through the bridge-attached scaffold, and drilling, steel bar planting, maintenance and curing are conducted on the end face of a bridge pier and abutment; then drilling holes in the side surface of the bridge abutment and mounting finish-rolled twisted steel bars and common steel bars; external prestressed steel beams are used for reinforcing, the prestressed steel beams are pre-embedded in the two sides of the bridge pier and abutment, and concrete is poured to form anchoring blocks and cantilever outriggers; the finish rolling twisted steel is tensioned so that the bridge pier and abutment can be pressed by the anchoring blocks on the two sides; the prestressed steel beams are tensioned, so that the contact surface position of the cantilever outrigger and the new and old concrete of the bridge pier and abutment is in a total cross-section compression state; the cantilever outrigger is additionally arranged on the existing bridge abutment to serve as a supporting point of the pipeline truss bridge, so that the engineering material cost and the construction measure cost of a newly-built pile foundation pier column are saved, the engineering construction cost is greatly reduced, the construction period is shortened, and remarkable engineering economic benefits are achieved.
本发明公开了一种桥梁墩台增设悬臂挑梁的施工方法，涉及桥梁工程技术领域，桥梁墩台外侧搭设附桥式脚手架；通过附桥式脚手架进行既有结构钢筋植筋,对桥梁墩台端面进行钻孔，植筋并养护固化；之后从桥梁墩台侧面钻孔并安装精轧螺纹钢筋与普通钢筋；体外预应力钢束加固,桥梁墩台两侧预埋预应力钢束，浇筑混凝土形成锚固块与悬臂挑梁；张拉精轧螺纹钢筋以使得桥梁墩台被两侧锚固块压紧；张拉预应力钢束以使得悬臂挑梁与桥梁墩台新旧混凝土接触面位置处于全截面受压状态；利用既有桥梁墩台增设悬臂挑梁，作为管线桁架桥的支撑点，节省新建桩基墩柱的工程材料费及施工措施费，大幅降低工程建设成本、节约施工工期，具有显著的工程经济效益。
Construction method for additionally arranging cantilever outrigger on existing bridge pier and abutment
一种既有桥梁墩台增设悬臂挑梁的施工方法
TIAN JUNHONG (author) / LI PENGFEI (author) / WANG YUNHANG (author) / YU ZENGMING (author) / ZHOU KANGJING (author) / YANG HAITAO (author) / HAO XINGCHEN (author) / ZHANG BAOXIANG (author)
2023-10-20
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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