中文摘要：

在总结钢纤维混凝土力学特性及阻裂机理方面研究成果的基础上证实了钢纤维混凝土的增强效应。通过对应用钢纤维增强的混凝土异形柱中节点与同条件下未增强的普通混凝土异形柱中节点的拟静力试验研究，对比分析了异形柱中节点的破坏特征、承载能力、变形能力及延性。研究结果表明：应用钢纤维混凝土显著改善了异形柱中节点的破坏特征，提高了异形柱中节点的承载能力，提高了异形柱中节点的变形能力和延性性能。

英文摘要：

The research results with mechanical properties and resistance of steel fiber concrete were summarized.The enhancement mechanism of steel fiber concrete was affirmed.The joint with specially shaped column with or without reinforced by steel fiber were tested under constant ax- ial compression load and low cyclic loading which imitated low to moderate earthquake force.The results in terms of damage characteristic, bear- ing capacity, displacement and ductility were compared.It is shown that the damage characteristic of specially shaped column interior joints rein- forced by steel fiber was improved, the bearing capacity was enhanced and the deformation behavior and ductility was also improved.