预应力碳纤维筋混凝土梁张拉损失的试验研究  

Experimental Study on Prestressing Loss During Stretching Period of Post-tensioned and Unbonded Concrete Beams Reinforced with CFRP Bars

作　　者：戴绍斌[1] 朱健[1] 

机构地区：[1]武汉理工大学设计研究院,武汉430070

出　　处：《武汉理工大学学报》2004年第3期70-72,共3页Journal of Wuhan University of Technology

基　　金：湖北省建设厅科技开发项目 ( K2 0 0 331)

摘　　要：根据张拉前后预应力碳纤维筋的应变实测数据对 5根无粘结预应力碳纤维筋混凝土梁试件张拉前后的预应力损失情况进行了研究 ,结果表明造成预应力损失的主要原因是锚具变形、砼收缩以及分批张拉 。Based on the measured value of the strain during stretching period, the prestressing loss of five post tensioned and unbonded concrete beams reinforced with CFRP bars are studied,the results show that the deformation of anchoring bolt,the shrinkage of concrete and unsymmetrical stretching are the main resons of prestressing loss,and corresponding suggestions such as joining deformed steel bars are put forward.

关 键 词：无粘结 预应力损失 碳纤维塑料筋 

分 类 号：TU757[建筑科学—建筑技术科学]