超长预应力混凝土结构跳仓法施工  

Sequence Method for Construction of Ultra-Long Prestressed Concrete Structure

作　　者：邵珠令 李永明[1] 王伟[1] 

机构地区：[1]中建八局第二建设有限公司,济南250013

出　　处：《建筑施工》2015年第9期1060-1062,共3页Building Construction

摘　　要：温州永强机场新建航站楼工程的旅客出发层为整体现浇混凝土结构,结构楼层全部为大截面预应力混凝土梁板。工程按照"分块规划、隔块施工、分层浇筑、整体成型"的原则,采用跳仓法施工,即将混凝土结构划分为20个分仓区域,并在施工过程中严格控制分仓混凝土浇筑时间,同时采取正确的分仓缝处理、混凝土浇筑和养护措施,最终成功地解决了后浇带清理难题,有效地控制了混凝土裂缝的产生,顺利地完成了大面积梁板的混凝土施工。The newly-built terminal departure floor of Wenzhou Yongqiang Airport is an integral cast-in-place concrete structure. The entire structure floors are large sectional prestressed concrete beams and slabs. In accordance with the principals of block-dividing plan, alternate-block construction, layered pouring and integral molding, the project was constructed by the sequence method. The concrete structure was divided into 20 sub-blocks at first. While at the same time in process of construction, the sectional pouring time was strictly controlled, and the measures for the treatment of sectional joints, concrete pouring and curing were also used properly. Finally, the difficulty of cleaning the post-pouring band was solved successfully, the concrete crack was controlled effectively, and the concrete construction of large area beams and slabs was completed smoothly.

关 键 词：机场航站楼 超长预应力混凝土结构 跳仓法 取消后浇带 施工技术 

分 类 号：TU756.4[建筑科学—建筑技术科学]