摘要
基于通用有限元软件MSC.MARC,采用已完成实验相关参数建立预制装配式异形柱框架节点有限元模型,进行了水平低周反复荷载作用下的数值仿真分析,与实验结果进行对比验证该模型的准确性。通过单一改变诸如轴压比、配筋率、材料属性等不同参数的数值模型计算结果,给出了各参数对装配式异型柱框架梁柱节点受力状态的影响程度。结果表明:在保证强柱弱梁的基础下,梁柱节点承载力和位移随着梁筋直径的增大显著提高,随着轴压比的增大有所减小,受节点核心区混凝土强度、核心区箍筋间距和柱筋直径的影响很小。
Nonlinear finite element numerical simulation analysis is a reasonable supplement and effective support to experiment. In this paper, based on the finite element software MSC.MARC, the parameters of the finished experiment are chosen to establish the finite element model of the special-shaped column frame joints. And numerical simulation analysis under horizontal low cyclic loading was carried out. The accuracy of the model was verified by experimental results. Then, the numerical results of changing the single parameter such as axial compression ratio, reinforcement ration, and material properties were obtained to show the influence evolution on the stress state of the proposed beam-column joints.
出处
《建筑技术》
北大核心
2015年第9期774-777,共4页
Architecture Technology
基金
北京市自然科学基金青年基金项目(8154045)
国家自然科学基金青年基金项目(51408030)
关键词
数值模拟
参数优化
异形框架结构
梁柱节点
numerical simulation
parameter optimization
irregular frame structure
beam-column joint
