中文摘要：

通过对9个钢纤维高强混凝土框架边节点试件在低周反复加载下的试验研究,探讨了钢纤维体积率、梁端钢纤维掺加范围、柱端轴压比和配箍率等对边节点核心区斜截面抗裂荷载的影响。结果表明,随着钢纤维体积率、轴压比和钢纤维掺加范围的增大,钢筋钢纤维高强混凝土框架边节点抗裂荷载呈现增大的趋势。随着配箍率的减小,钢筋钢纤维高强混凝土框架边节点抗裂荷载呈现降低的趋势。并在普通混凝土框架边节点核心区斜截面抗裂荷载计算式的基础上,提出了钢纤维高强混凝土框架边节点核心区斜截面抗裂荷载的计算式,计算值与试验值吻合较好。

英文摘要：

By studying the nine steel fiber reinforced high - strength concrete frame exterior joints by means of experimental investiga- tion with the low cycle loading method, it discussed the influence of steel fiber volume ratio, steel fiber additional range, axial compres- sive ratio and stirrup ratio upon the cracking -resistance loads of diagonal section.The result shows that with the increase of steel fiber volume ratio or axial compression ratio and steel fiber additional range, enhances the cracking - resistance load of the core area, with the decrease of stirrup ratio, decreases the cracking - resistance load of the core area. The calculating method of the cracking - resistance loads of diagonal section of steel fiber reinforced high - strength concrete frame exterior joint was proposed based on that of reinforced concrete frame exterior joint, the calculation results and the experimental results coincide well.