钢纤维高强混凝土管桩延性性能试验研究  

Experimental research on ductility of high strength concrete pipe piles reinforced by steel fiber

作　　者：戎贤[1,2] 张健新[1,2] 李艳艳[1,2] 刘平[1,2] 

机构地区：[1]河北工业大学土木工程学院,天津300401 [2]河北省土木工程技术研究中心,天津300401

出　　处：《混凝土》2014年第8期127-129,共3页Concrete

基　　金：天津市自然科学基金项目(12JCYBJC14100)

摘　　要：通过在预应力高强混凝土管桩中掺加钢丝端钩型钢纤维、剪切端钩型钢纤维和同等条件下未掺加钢纤维的管桩进行拟静力试验研究,研究钢纤维及其体积率对预应力高强混凝土管桩延性性能的影响。对比分析预应力高强混凝土管桩的破坏特征、承载能力、变形能力及延性性能。结果表明,钢纤维增强的预应力高强混凝土管桩的破坏特征得到改善,承载能力及变形能力得到提高,延性性能得到显著改善。随着钢纤维体积率的增加,预应力高强混凝土管桩的延性性能得到提高。In order to research the effect of steel fiber and volume ratio of steel fiber on ductility behavior of the prestressed high strength concrete pipe pile,the prestressed high strength concrete pipe pile reinforced by wire end hook steel fibers,shear end hook steel fiber and without reinforcement were tested under low cyclic loading.The results in terms of damage characteristic ,bearing capacity,dis-placement and ductility were analyzed.It is shown that the damage characteristic of prestressed high strength concrete pipe piles reinforced by steel fiber is improved,the bearing capacity and the deformation behavior are enhanced and the ductility is also improved.With the vol-ume ratio of steel fiber increases,the ductility of prestressed high strength concrete pipe piles reinforced by steel fiber is enhanced.

关 键 词：钢纤维高强混凝土 管桩 延性 钢纤维体积率 

分 类 号：TU528[建筑科学—建筑技术科学] TU572