循环荷载下古建筑梁柱节点稳定性仿真研究  

Simulation Study on the Stability of Beam Column Joints of Ancient Buildings under Cyclic Load

作　　者：姚阳 屠书荣[1] YAO Yang;TU Shu-rong(Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学,重庆400074

出　　处：《计算机仿真》2020年第6期242-246,共5页Computer Simulation

摘　　要：为了最大程度保护古建筑结构完整,减少地震对其的破坏力,通过模拟循环荷载分析古建筑梁柱节点稳定性。从外力、抗剪、抗弯以及轴承强度分析古建筑梁柱相交强度,通过泊松比计算获得梁柱弹性常数,随后以榫卯作为古建筑梁柱节点,明确其半刚性结构特征,并计算二者连接交点受力度。在循环荷载作用下,得出梁柱节点的主要变换过程为初始滑移、弹性变形和损伤利用恢复力和形变关系曲线建立恢复力模型,依据弹性本构方程、节点木材屈服准则、流动法则,完成循环荷载下古建筑节点稳定性分析。仿真结果证明,在循环荷载下节点受力稳定性良好,为古建筑保护提供一定的理论依据。In order to protect the completion of ancient building structure and reduce the destructive force of earthquake, this paper analyzed the stability of beam-column joint in ancient building by simulating the cyclic load. The strength of intersection of beam and column in ancient building was analyzed from the external force, shear resistance, bending resistance and bearing strength. The elastic constant of beam and column was calculated by Poisson’s ratio. Then, the mortise and tenon joint was used as the beam-column joint of ancient building to determine its semi-rigid structure feature. Meanwhile, the strength of joint was analyzed. Based on the cyclic loading, it was found that the main transformation process of beam-column joint included the initial sliding, elastic deformation and damage. Thus, the resilience force model was built by the curve between the resilience force and deformation. Finally, the stability analysis of beam-column joint in ancient building under cyclic load was completed by elastic constitutive equation, joint wood yield criterion and flow rule. Simulation proves that the proposed method good stress stability of node under the cyclic load, which provides a theoretical basis for the protection of ancient buildings.

关 键 词：循环荷载 古建筑梁柱 泊松比 恢复力模型 

分 类 号：P231[天文地球—摄影测量与遥感]