长江科学院院报2017，Vol.34Issue(2)：45-51,7.DOI:10.11988/ckyyb.20161017
双根无粘结预应力筋加筋体力学性能研究
Mechanical Properties of Reinforced Body with Double Unbonded Prestressed Reinforcements
摘要
Abstract
The mechanical properties of reinforced body with double unbonded prestressed reinforcements are affect-ed by the pre-tension applied on it.In scale model tests,steel shot was adopted to simulate the intensity of cohe-sionless fill and the stress state of the reinforced body.The distribution of deformation in the reinforced body and the soil pressure on the back of slab were obtained through applying pre-tension on unbonded prestressed reinforcement and heaped load at the top of reinforced body step by step.The test results were compared with those of common re-inforced body.Results revealed that the settlement on the top of the reinforced body in the presence of pre-tension was smaller than that of common reinforced body in the absence of pre-tension.The increment of pre-tension re-duced the horizontal deformation of slab and affected the settlement on the top of the reinforced body,which de-pends on the position of unbonded prestressed reinforcement.Moreover,the horizontal deformation of slab and verti-cal deformation of the prestressed reinforced body changed little under heaped load.When applying pre-tension, there is almost no interaction between the reinforcements.关键词
无粘结预应力筋/加筋体/预拉力/力学性能/缩尺模型试验Key words
unbonded prestressed reinforcement/reinforced body/pre-tension/mechanical property/scale model test分类
建筑与水利引用本文复制引用
杜运兴,周芬,梁强..双根无粘结预应力筋加筋体力学性能研究[J].长江科学院院报,2017,34(2):45-51,7.基金项目
国家自然科学基金项目 （）
