北京射击馆异形轻质材料填充预应力厚板施工技术  

Construction Technology of Thick Large-span Prestressed Hollow Board Filled with Special-section Light Material in Beijing Shooting Range Hall

作　　者：杨发兵 沈凤云 施锦飞 徐烨 

机构地区：[1]中建二局第三建筑工程有限公司,北京100070

出　　处：《施工技术》2009年第2期23-26,共4页Construction Technology

摘　　要：北京射击馆为2008年北京奥运会射击比赛用馆,由资格赛馆、决赛馆以及枪弹库及武警用房三大功能区组成。资格赛馆二层楼面局部采用预应力超长结构和单向预应力空心板等多种形式的预应力技术。空心板A段长134m,B段长78.75m,板厚700mm。通过对预应力空心楼板中的填充材料及填充料截面形式合理选择,确定合理的楼板起拱高度,设置抗浮筋和抗浮铁丝,很好地解决了空心率高达49.5%,抗浮力高达4.5kN/m的问题,预设机电吊杆实现了混凝土零损伤的质量控制目标。Beijing Shooting Range Hall serves the Beijing 2008 Olympic Games, which contains qualification competition halls, a final competition hall, a storehouse, a room for armed police use. The second floor of qualification competition halls take some prestress technologies of super-long prestress structure and one-way slab prestressed hollow board. The 700mm-thickness hollow board includes segment A with a length of 134 meters, and segment B with a length of 78.75 meters. By selecting suitable filling material and section type in prestressed hollow board, determining reasonable preset height of floor and setting anti-floating bars, the problems of high hollow ratio of 49.5 % , and high anti-floating of 4.5kN/m, are solved. And the quality control target of no damaged concrete during presetting electromechanical suspender becomes reality.

关 键 词：北京射击馆 楼板 预应力 轻质材料 抗浮 施工 

分 类 号：TU757.4[建筑科学—建筑技术科学]