无粘结预应力双向板张拉损失  

Tensional losses of two way prestressed concrete slabs with unboned tendons

作　　者：邴晓[1] 王清湘[2] 宋永发[2] 张保和[3] 

机构地区：[1]大连理工大学土木建筑设计研究院,辽宁大连116024 [2]大连理工大学土木建筑学院,辽宁大连116024 [3]上海市建筑科学研究院,上海200032

出　　处：《大连理工大学学报》2000年第6期747-751,共5页Journal of Dalian University of Technology

摘　　要：通过 6块无粘结预应力双向板的试验 ,研究了板中无粘结预应力筋的预应力损失及其相互影响规律 .试验结果表明 :两个方向张拉钢筋的交互影响很小 ,设计中可不考虑 ;当预应力筋间距大于 3倍板厚时 ,可不考虑相邻张拉的影响 .同时给出了相应的计算公式 .Based on the experiments of six pieces of two way prestressed concrete slabs with unboned tendons,the prestress tensional losses and their interaction regulation of the unboned prestressed tendons in the slab are discussed.The experimental results show that one way tensional tendons only have little influence on other way,and this effect can be ignored in design. And if the tensional tendon space is three times larger than the slab thickness, the tensional effects of the neighboring tendons may not be counted. The related calculational formula is also provided at the same time.

关 键 词：双向板 预应力损失 无粘结预应力 张拉损失 钢筋混凝土 

分 类 号：TU378[建筑科学—结构工程]