后张法无粘结、有粘结预应力在工程中的应用  

THE ENGINEERING APPLICATION OF NON-BONDING AND BONDING PRE-STRESS BY POST TENSION

作　　者：陈洋[1] 赵静[1] 马天生 

机构地区：[1]北京建工集团有限责任公司总承包二部,北京100045

出　　处：《建筑技术》2007年第4期283-284,共2页Architecture Technology

摘　　要：国家会议中心工程总建筑面积27万m2,地下2层,地上8层,建筑物檐高42m,为了减少温度应力对结构的影响,并且充分的考虑到方便施工,在地下一层顶板内布置了无粘结预应力筋;同时,为了充分提高梁承载能力及梁的抗裂性能,采用了有粘结预应力筋,梁跨度有26m和24m两种。The National Conference Center Project at Beijing Olympic Park （Area B） has a total floor area of 270,000 m^2, 2 floor of basement, 8 storey above ground, and eaves height 42m. In order to reduce temperature impact on the structure and facilitate the construction, unbonded prestressed reinforcement was arranged at the first floor of basement. At the same time, bond prestressed steel bar was arranged in the beams spanning 26m and 24m respectively so as to improve fully their bearing capacity and crack resistance.

关 键 词：无粘结预应力 有粘结预应力 后张 预应力筋 

分 类 号：TU378[建筑科学—结构工程]