CAJ | 학술논문

节点刚度对结构内力分布和变形形态有重要影响。为了研究圆钢管混凝土柱环梁节点的刚性，借助AN‐SYS软件建立多组圆钢管混凝土柱环梁节点实体有限元模型进行计算，验证环梁节点的半刚性特性，研究环梁高度、环梁宽度、钢管直径、环梁配筋量和环梁混凝土强度对环梁节点刚度的影响规律，并进一步推导环梁节点简化的初始刚度理论计算公式。研究结果表明：环梁节点具有半刚性特性；增大环梁高度、环梁配筋量和框架梁宽度将提高环梁的刚性，增大环梁宽度和钢管直径将减小环梁刚性。
절점강도대결구내력분포화변형형태유중요영향。위료연구원강관혼응토주배량절점적강성，차조AN‐SYS연건건립다조원강관혼응토주배량절점실체유한원모형진행계산，험증배량절점적반강성특성，연구배량고도、배량관도、강관직경、배량배근량화배량혼응토강도대배량절점강도적영향규률，병진일보추도배량절점간화적초시강도이론계산공식。연구결과표명：배량절점구유반강성특성；증대배량고도、배량배근량화광가량관도장제고배량적강성，증대배량관도화강관직경장감소배량강성。
Joint stiffness has an important impact on stress distribution and deformed shape of structure .In order to research the rigidity of ring‐beam joint of concrete‐filled circular steel tubular column ,many solid finite models were established through ANSYS as well as the calculation was performed ,the semi‐rigid of ring‐beam joint was verified .The influence laws of ring‐beam height ,ring beam width ,steel tube diameter ,ring‐beam reinforcement and ring‐beam concrete strength to joint rigidity were investigated ,and then the design formulas of initial stiffness was derived .The results showed that ring ‐beam joint had semi‐ rigid feature ,the increasing of the ring ‐ beam height and reinforcement would strengthen initial stiffness ,and the increasing of the ring ‐ beam width and steel tube diameter would weaken initial stiffness .