摘要
在多种形式的预制叠合楼板基础上,提出一种带钢筋桁架翼缘板加劲的新型预应力叠合楼板;在施工工况下,对其进行了跨中有支撑和无支撑两种情况的静力加载试验研究,并分析了其施工阶段的刚度。结果表明,预制底板在有支撑和无支撑情况下均未开裂,且挠度均满足规范要求,为保证安全性,该新型预制底板短期刚度计算折减系数为0.75。
A new kind of prestressed composite slab with steel truss flange ribbed panels was developed on the basis of various existing types of precast composite slab; two static loading experiments of this slab with or without support in the mid span respectively were conducted, and the stiffness under construction condition was analyzed. Results revealed that the new？type slab didn ’ t produce any cracks no matter whether it was supported and displacements were satisfied. For ensuring safety, the reduction coefficient of short？term rigidity of the precast bottom board was suggested to be 0？75 .
出处
《施工技术》
CAS
北大核心
2014年第22期33-36,共4页
Construction Technology
基金
"十二五"国家科技支撑计划项目(2011BAJ10B03)
关键词
预制混凝土
预应力混凝土
叠合板
钢筋桁架
翼缘加劲肋
试验研究
precast concrete
prestressed concrete
composite slab
steel bar truss
flange ribbed panels
experiments
