In this study, a 4-node lattice element was formulated based on the general lattice model. The experimental program was conducted to verify the 4-node lattice element analysis. In the experimental program, four kinds of RC beam-column specimens were constructed. Anchorage shapes of beam and bonding interfaces between the reinforcement and concrete in the beam part were used as parameters of the specimen. The material properties of unbonded reinforcement used in the 4-node lattice element analysis were derived from nonlinear fiber-section analysis. The load-displacement hysteresis behavior of the 4-node lattice element analysis results are compared with that of the experimental study. The improved lattice analysis method could be used to predict the hysteresis behavior quicker and more simply. It should now be possible not only to use the prediction of the unbonded reinforcement behavior more accurately, but also to apply nonlinear dynamic analysis to general reinforced concrete structures.

在本研究中，基于通用晶格模型制定了一个4节点晶格元素。进行实验程序以验证4节点晶格元素分析。在实验程序中，构造了四种RC梁柱标本。梁的锚固形状和梁部分中钢筋与混凝土之间的粘结界面被用作试样的参数。4节点格单元分析中使用的非粘结增强材料的材料特性是从非线性纤维截面分析得出的。将4节点点阵单元分析结果的载荷位移滞后行为与实验研究进行了比较。改进的晶格分析方法可用于更快，更简单地预测磁滞行为。