无粘结预应力混凝土平板的结构性能  

Study on Slab Prestressed with Unbonded Tendon about Structure Behavior

作　　者：陈国栋[1] 房贞政[1] 

机构地区：[1]福州大学土木建筑工程学院,福州350002

出　　处：《厦门大学学报（自然科学版）》1999年第6期846-852,共7页Journal of Xiamen University：Natural Science

摘　　要：现行行业标准无粘结预应力混凝土技术规程JGJ/92- 93 没有对平板结构不同布筋形式的性能作出详细规定;应用等代框架法计算出的无粘结预应力筋随意布置,忽略跨中板带预应力筋的不利作用;在应用有限元等较为精确的方法验算时部分区域不满足抗裂度设计要求.本文应用有限元法并通过模型试验分析布筋形式的影响。The detailrule for perform ance ofslab structure under varioius distribu- tion form s has not been m ade in current TechnicalSpecification for Concrete Structures Pre- stressed w ith Unbonded Tendons(JGJ/T92-93).The am ountofprestressed unbonded tendons calculated by m eans ofthe assum ption ofequivalentfram e is distributed random ly w ithoutcon- sidering any ofnegative influence ofdistribution form s on m iddle span′s tendon,and crack re- sistance is checked outofthe expectation when accurate analysism ethod such asfinite elem ent analysis m ethod is used. The finite elem ent m ethod is used and a m odelexperim entis carried outto discuss the influence ofdistribution form s on slab-colum n structure,and reasonable dis- tribution form s ofprestressed unbonded tendons are putforw ard.

关 键 词：无粘结 平板结构 模型试验 预应力混凝土 有限元 

分 类 号：TU378.503[建筑科学—结构工程]