工厂加工制作的特殊构造梁柱节点抗震性能有限元分析

发布时间：2018-02-26 00:21

本文关键词： 梁柱节点特殊构造抗震有限元分析损伤指数　出处：《工程力学》2015年06期 　论文类型：期刊论文

【摘要】：为研究工业用途的某特种钢结构的抗震性能,该文在3个特殊构造梁柱节点的循环加载试验研究的基础上,采用有限元软件ABAQUS中的C3D8R实体单元建立模型,对该特殊构造梁柱节点的滞回性能进行了模拟分析,模型考虑了材料非线性、几何非线性的影响。通过有限元分析与试验结果的比较,验证了有限元模型的正确性。在此基础上,提取有限元模拟的局部分析结果,包括螺栓拉力的变化与节点组件的损伤指数,进一步为试验研究的最终破坏形态提供微观的力学解释。结果表明,试件I螺栓端板连接中梁翼缘两侧的螺栓拉力基本相同;试件I和试件II中柱强轴方向连接构造的断裂最可能发生在连接界面处的梁下翼缘中心,试件II和试件III中柱弱轴方向连接构造的断裂最可能发生在柱翼缘端部的盖板。研究结果可为此类特殊构造梁柱节点的各个组件力学行为分析以及相关的设计方法提供一定的参考。
[Abstract]:In order to study the seismic behavior of a special steel structure for industrial use, based on the cyclic loading test of Liang Zhu joints of three special structures, the model of C3D8R solid element in finite element software ABAQUS is established in this paper. The hysteretic properties of Liang Zhu joints with this special structure are simulated and analyzed. The effects of material nonlinearity and geometric nonlinearity are considered in the model. The finite element analysis is compared with the experimental results. The correctness of the finite element model is verified. On this basis, the local analysis results of the finite element simulation are extracted, including the variation of bolt tension and the damage index of the joint assembly. The results show that the bolt tension on the flange of I bolt end plate connection is basically the same. Specimen I and specimen II are most likely to be located at the center of the lower flange of the beam at the junction interface. In specimen II and specimen III, the fracture of column weak axial connection structure is most likely to occur in the cover plate at the end of the column flange. The results can be used to analyze the mechanical behavior of each component of Liang Zhu joint in this special structure and the relevant designers. Law provides a certain reference.
【作者单位】：土木工程安全与耐久教育部重点实验室清华大学土木工程系;中国石化工程建设有限公司;
【分类号】：TU391;TU352.11

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