扁梁柱节点在低周往复荷载作用下的有限元分析  

Finite element analysis for flat beam-column joints under cyclic loading in low seismic performance

作　　者：张金轮[1] 钱德玲[1] 许小健[1] 

机构地区：[1]合肥工业大学土木建筑工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2008年第2期225-228,共4页Journal of Hefei University of Technology：Natural Science

摘　　要：文章通过有限元分析软件ANSYS对钢筋混凝土扁梁柱节点的非线性分析,得出等宽扁梁自由端在竖向低周往复荷载作用下的滞回曲线与试验滞回曲线形状比较吻合,从宏观上分析了其抗震性能,并且较好地模拟了结构在节点处形成的交叉裂缝;用不同的轴压比对扁梁柱节点进行模拟,得出不同轴压力对扁梁柱节点抗震性能的影响及其相应的初裂荷载与极限荷载,用计算结果与相应的实验结果进行比较,误差较小,满足实际要求。With the help of ANSYS, the finite element analysis software, the nonlinear analysis for the reinforced concrete column joints is conducted. The result comes out that the free end in the vertical width-week low hysteresis curve of cyclic loading is similar with the hysteresis curve shape in the test. From a macroeconomic point of view, its seismic behavior is analyzed and a better simulation of structural cracks in the overlapping nodes is also achieved. Different axial compression ratio is applied to the column joints in the simulation and different seismic properties of the corresponding initial crack load and maximum load are obtained because of axial pressures on the column joints. The calculation results are consistent with the experimental results, which can meet the actual requirements. ANSYS simulation analysis applied to the whole reinforced concrete flat beam-column joints under cyclic load- ing in the overall seismic performance can be of reference value to the actual project.

关 键 词：扁梁柱节点 有限元 滞回曲线 抗震性能 破坏形态 

分 类 号：TU375.1[建筑科学—结构工程]