| 霍静思,韩林海.钢管混凝土柱-钢梁节点的力学性能分析[J].计算力学学报,2008,25(1):35~40 |
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| 钢管混凝土柱-钢梁节点的力学性能分析 |
| Nonlinear finite element analysis of steel beam to concrete-filled steel tubular column connection |
| 投稿时间：2005-10-18 修订日期：2006-03-02 |
| DOI：10.7511/jslx20081010 |
| 中文关键词: 钢管混凝土柱,钢梁,节点,非线性,有限元,参数分析 |
| 英文关键词:concrete-filled steel tubular column,steel beam,connection,nonlinear,FEA,parametric analysis |
| 基金项目:国家自然科学基金
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清华大学校科研和教改项目 |
| 霍静思 韩林海 |
| 湖南大学土木工程学院，清华大学土木系 长沙410082，湖南大学建筑安全与节能教育部重点实验室，长沙410082，北京100084，清华大学结构工程与振动教育部重点实验室，北京100084 |
| 摘要点击次数: 1741 |
| 全文下载次数: 31 |
| 中文摘要: |
| 基于弹塑性有限元理论建立了钢管混凝土柱-钢梁节点荷载-位移全过程非线性有限元模型,在单元分析中采用改进的AUL表述推导得到梁柱单元刚度矩阵方程,同时考虑了材料的物理非线性和单元的几何非线性,并编制了非线性有限元程序NLFEACFST。采用该模型对相关研究者和作者进行的节点试验进行了分析,理论计算结果与试验结果比较表明,该模型具有很好的适用性和精度。在理论分析模型得到试验结果验证的基础上,对典型的中柱节点进行了荷载-位移全过程非线性特性分析,并对影响节点承载力和荷载-位移骨架曲线的因素进行了参数分析,为进一步从理论研究钢管混凝土框架结构的力学性能创造了条件。 |
| 英文摘要: |
| A nonlinear finite element model was developed,based on the elasto-plastic finite element theory,to analyze the load vs deformation relation of the steel beam to concrete-filled steel tubular column connection.The beam-column element is analyzed using approximate updated Lagrangian formulation to obtain the stiffness matrix,in which material and geometric nonlinearities are considered.Accordingly,a program for the nonlinear finite element analysis of concretefilled steel tubular connection was obtained.The model was used to analyze the experiments on the steel beam to concrete-filled steel tubular column connections conducted by related researchers and authors herein.It was shown from the comparisons between the calculated and tested results that the model has good applicability and precision.On the base of the verification by the tested results,the nonlinear load vs deformation relation characteristics of the typical connection was studied,and the influences on the load and load vs deformation skeleton curves of the essential parameters were discussed.The work in this paper provides a basis for further theoretical research on the behaviors of the concrete-filled steel tubular frames. |
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