摘要
通过对8个钢筋钢纤维高强混凝土梁柱边节点的低周反复加载试验,分析了钢纤维体积分数、节点核心区配箍率、柱端轴压比等因素对节点抗裂性能的影响.结果表明,随着轴压比和钢纤维体积分数的适当增加,节点的抗裂性能显著提高,配箍率对节点抗裂性能的影响较小.最后在试验研究和理论分析的基础上,给出了钢纤维高强混凝土梁柱节点抗裂强度的计算方法.
Based on the experiment of eight beam-column joints using steel fiber reinforced high-strength concrete under reversed cyclic loading, the influences of the steel fiber volume fraction, the stirrup ratio in the joint core and axial-load ratio on crack resistance of joints were investigated. The result showed that with the increase of the steel fiber volume fraction and axial-load ratio, crack resistance of joints improved significantly, but the effect of the stirrup ratio on the crack resistance of joints was less. Furthermore, the calculation method of cracking strength was proposed on the basis of experimental research and theoretical analysis.
出处
《华北水利水电学院学报》
2012年第6期64-68,共5页
North China Institute of Water Conservancy and Hydroelectric Power
基金
国家自然科学基金重点项目(50678159)
关键词
钢纤维高强混凝土
梁柱节点
抗裂
steel fiber reinforced high-strength concrete
beam-column joints
crack resistance
