【作者】 吴健秋； 韩凤霞； 王志军；

【Author】 WU Jian- qiu ,HAN Feng- xia, WANG Zhi-jun (College of Civil Engineering,Chongqing University,Shapingba 400045,China)

【机构】 重庆大学土木工程学院；

【摘要】 本文在深入研究基于美国PEER中心开发的结构非线型分析工具OpenSees平台的超级节点模型的组成结构和实现方法的基础上,利用修正斜压场理论(MCFT)编制了计算混凝土剪切应力-剪切应变关系的程序,在对节点区钢筋的抗剪机理进行分析后,提出了一种通过加位移的方式计算节点核心区剪切应力-剪切应变全过程曲线的简化定参方法。最后通过OpenSees平台使用该模型对6个节点试验进行分析,得到了理想的模拟结果,并根据分析结果对修正定参方法后的节点模型的优缺点进行了评价。更多还原

【Abstract】 After thorough analysis on the two-dimensional joint model element called ‘super model’ in the nonlinear analysis procedure OpenSees, which is produced by the PEER center of America, a program based on the MCFT to define the parameters in the joint model was worked out. With the analysis of the load distribution in the joint core, a simple method of defining parameters of the whole curve of shear stress-strain relationship for Shear Panel using the displacement control was put forward. The proposed parameter defining method got preferable simulated responses to simulate the joint tests. Finally, the advantages and disadvantages of the joint model were evaluated through comparison of the simulated and observed response.更多还原