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UHPC (Ultra High Performance Concrete) plate, corrugated steel plate and concrete plate combined box girder and construction method
The invention discloses a combined box girder of UHPC (Ultra High Performance Concrete) plates, corrugated steel plates and concrete plates and a construction method. The combined box girder comprises two horizontal plates and two webs, one of the two horizontal plates is a UHPC (Ultra High Performance Concrete) plate, and the other horizontal plate is a concrete prefabricated plate; the two webs are corrugated steel plates; the UHPC plate is provided with a plurality of pre-tensioning method prestressing tendons, and grooves are formed in the positions where the UHPC plate is connected with the corrugated steel plate; the corrugated steel plate is fixed with the UHPC plate through a wet joint, and a plurality of transverse studs are arranged on the wet joint; and the other side of the corrugated steel plate is fixed with the concrete precast slab. During construction, the UHPC plate and the concrete prefabricated plate are poured, and the two corrugated steel plates and the concrete prefabricated plate are fixed; and after being transported to the site, the UHPC board is firstly in place, then the concrete prefabricated board and the two corrugated steel plates are hoisted, and finally wet joints are poured for solidification. Tensioning of post-tensioning prestress in a traditional corrugated steel web box girder structure is avoided, and the problem of corrosion prevention of external prestress or the problem of complex structure of internal prestress is solved.
本发明公开了UHPC板、波折钢板和混凝土板的组合箱梁及施工方法，包括两块水平板和两块腹板；两块水平板中一块为UHPC板，另一块为混凝土预制板；两块腹板均为波折钢板；UHPC板设有多道先张法预应力束，与波折钢板连接的位置均设凹槽；波折钢板通过湿接缝与UHPC板固定，在湿接缝设有多个横向栓钉；波折钢板的另一边与混凝土预制板固定。施工时，浇筑UHPC板和混凝土预制板，将两波折钢板与混凝土预制板固定；运至现场后，先就位UHPC板，再吊装混凝土预制板和两波折钢板，最后浇筑湿接缝固结。本发明避免了传统波折钢腹板箱梁结构中后张预应力的张拉，解决了体外预应力的防腐问题或者体内预应力构造复杂的问题。
UHPC (Ultra High Performance Concrete) plate, corrugated steel plate and concrete plate combined box girder and construction method
The invention discloses a combined box girder of UHPC (Ultra High Performance Concrete) plates, corrugated steel plates and concrete plates and a construction method. The combined box girder comprises two horizontal plates and two webs, one of the two horizontal plates is a UHPC (Ultra High Performance Concrete) plate, and the other horizontal plate is a concrete prefabricated plate; the two webs are corrugated steel plates; the UHPC plate is provided with a plurality of pre-tensioning method prestressing tendons, and grooves are formed in the positions where the UHPC plate is connected with the corrugated steel plate; the corrugated steel plate is fixed with the UHPC plate through a wet joint, and a plurality of transverse studs are arranged on the wet joint; and the other side of the corrugated steel plate is fixed with the concrete precast slab. During construction, the UHPC plate and the concrete prefabricated plate are poured, and the two corrugated steel plates and the concrete prefabricated plate are fixed; and after being transported to the site, the UHPC board is firstly in place, then the concrete prefabricated board and the two corrugated steel plates are hoisted, and finally wet joints are poured for solidification. Tensioning of post-tensioning prestress in a traditional corrugated steel web box girder structure is avoided, and the problem of corrosion prevention of external prestress or the problem of complex structure of internal prestress is solved.
本发明公开了UHPC板、波折钢板和混凝土板的组合箱梁及施工方法，包括两块水平板和两块腹板；两块水平板中一块为UHPC板，另一块为混凝土预制板；两块腹板均为波折钢板；UHPC板设有多道先张法预应力束，与波折钢板连接的位置均设凹槽；波折钢板通过湿接缝与UHPC板固定，在湿接缝设有多个横向栓钉；波折钢板的另一边与混凝土预制板固定。施工时，浇筑UHPC板和混凝土预制板，将两波折钢板与混凝土预制板固定；运至现场后，先就位UHPC板，再吊装混凝土预制板和两波折钢板，最后浇筑湿接缝固结。本发明避免了传统波折钢腹板箱梁结构中后张预应力的张拉，解决了体外预应力的防腐问题或者体内预应力构造复杂的问题。
UHPC (Ultra High Performance Concrete) plate, corrugated steel plate and concrete plate combined box girder and construction method
UHPC板、波折钢板和混凝土板的组合箱梁及施工方法
LI XUEFENG (author) / GU YIWEI (author) / ZHANG TAO (author) / ZHU JINWEI (author)
2023-10-03
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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