现浇鱼腹式箱梁钢木组合模板施工技术

Construction Technology of Cast-in-place Fish-bellied Box Girder with Steel-wood Composite Formwork

鱼腹式结构凭借造型优美的特点被广泛应用于桥梁设计中。以长沙市市政桥梁工程为例,阐述鱼腹式箱梁结构钢木组合模板体系关键技术,包括平台施工、钢塔架设计与安装、底模铺设、箱梁钢筋绑扎、内模制作与安装、预应力施工等。结果表明,现浇鱼腹式箱梁钢木组合模板可满足桥梁外形要求,节约施工成本,取得良好的经济效益和社会效益。

The fish-bellied structure with graceful sculpt is widely applied in bridge design.Taking some municipal bridges in Changsha as examples,key construction technologies of cast-in-place fish-bellied box girder with steel-wood composite formwork are outlined,including platform construction,design and installation of steel tower,laying of bottom formwork,manufacture and installation of internal formwork as well as prestresed construction and so on.The results show that bridge shape can be demanded by adopting cast-in-place fish-bellied box girder with steel-wood composite formwork,thus,construction cost is saved,which can gain good economic and social benefits.