【摘要】 针对核芯区混凝土强度低于柱混凝土强度的框架节点进行了试验研究。通过五个试件在较高轴压比下的低周反复加载试验和弹性有限元分析,研究了此类节点的破坏形态、受力性能,探讨核芯区混凝土强度低于柱的混凝土强度的可行性。提出了核芯区混凝土强度比柱的混凝土强度低时的设计建议。更多还原

【Abstract】 Generally,concrete strength of beams is lower than that of columns for reinforced concrete frames.There are some construction difficulties if the beam-column joint core has the same concrete strength as the column’s.The feasibility of adopting the beam concrete strength in the core,which is lower than the column concrete strength,is studied.Five reinforced concrete beam-column joint specimens were designed and constructed for low-frequency cyclic loading experiments.Computational analysis are carried out by elastic finite element method.The design recommendations are presented for the reinforced concrete beam-column joint core whose strength is lower than that of the column.更多还原