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Role of fibers on the performance of geopolymer concrete exterior beam column joints

机译：纤维对地质聚合物混凝土外梁柱节点性能的影响

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摘要

The performance of steel fiber reinforced geopolymer concrete beam column joints under cyclic loading was investigated. The volume fraction of fibers considered were 0.25% (19.62 kg/m(3)), 0.5% (39.24 kg/m(3)), 0.75% (58.86 kg/m(3)) and 1% (78.48 kg/m(3)). A total of fifteen specimens were prepared and tested under reverse cyclic loading. Test results were analyzed with respect to first crack load, ultimate load, energy absorption capacity, energy dissipation capacity, stiffness degradation and load deflection behavior. Test results revealed that the addition of steel fibers enhanced the performance of geopolymer concrete beam column joints significantly. The joints were analyzed using finite element software ANSYS. The analytical results were found to compare satisfactorily with the experimental values.
机译：研究了钢纤维增强的土工聚合物混凝土梁柱节点在循环荷载下的性能。考虑的纤维体积分数为0.25％（19.62 kg / m（3）），0.5％（39.24 kg / m（3）），0.75％（58.86 kg / m（3））和1％（78.48 kg / m） （3））。总共准备了15个样品并在反向循环载荷下进行了测试。针对第一裂纹载荷，极限载荷，能量吸收能力，能量耗散能力，刚度下降和载荷挠曲行为对测试结果进行了分析。测试结果表明，钢纤维的添加显着提高了地聚合物混凝土梁柱节点的性能。使用有限元软件ANSYS对接头进行了分析。发现分析结果与实验值令人满意地比较。

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