In areas with high seismicity, the construction of reinforced concrete structures with high ductility requires observance of the special seismic specifications of the ACI 318 regulations. This will increase the congestion of transverse reinforcement in the beam-column joints, and this reinforcement congestion in the joints in turn will bring along problems in the construction and concreting. In this study, the use of high-performance fiber-reinforced cementitious composites (HPFRCC) in the joints of frames has been investigated in order to prevent the congestion of the transverse reinforcement in beam-column joints. First, four half-scale exterior beam-column joints were tested under incremental cyclic lateral loading. The tested specimens consisted of two conventional concrete control specimens with and without seismic details and two HPFRCC specimens. Second, physical models for conventional concrete and HPFRCC joints were proposed. Third, verification was performed using experimental results. Then, 5 and 10-story frames including two conventional control frames with and without seismic details and two HPFRCC frames without seismic details are developed by assembling these physical models with OpenSees software. Using nonlinear analyses, the ductility ratio, energy dissipation capacity as well as the cyclic behavior of the frames are examined and compared. The results show that the use of HPFRCC in beam-column joints of frames without seismic details increases the shear strength of joints, the relocation of plastic hinge to the outside of the joint core and the improvement of lateral behavior. The proposed method also shows a significant improvement in seismic parameters such as strength, stiffness, energy dissipation and ductility capacity.

在地震烈度较高的地区，高延展性的钢筋混凝土结构的建造需要遵守ACI 318法规的特殊地震规范。这将增加梁柱节点中横向钢筋的拥挤，而节点中这种钢筋的拥挤又会带来施工和混凝土方面的问题。在这项研究中，已经研究了在框架的接缝中使用高性能的纤维增强水泥基复合材料（HPFRCC），以防止梁柱接缝中横向钢筋的拥挤。首先，在增量循环侧向荷载下测试了四个半尺度的外部梁柱节点。测试的样本包括两个带有和不带有地震细节的常规混凝土控制样本和两个HPFRCC样本。其次，提出了常规混凝土和HPFRCC节点的物理模型。第三，使用实验结果进行验证。然后，通过使用OpenSees软件组装这些物理模型，开发出5层和10层的框架，包括两个带有和不带有地震细节的常规控制框架以及两个没有地震细节的HPFRCC框架。使用非线性分析，检查并比较了框架的延展率，能量耗散能力以及循环行为。结果表明，在无地震细节的框架梁柱节点中使用HPFRCC可以提高节点的抗剪强度，塑料铰链重新定位到关节核心的外侧，并改善了横向性能。所提出的方法还显示出地震参数的显着改善，例如强度，刚度，能量耗散和延性。