Keynote: Finite element analysis of sustainable and deconstructable semi-rigid beam-to-column composite joints
Keynote: Finite element analysis of sustainable and deconstructable semi-rigid beam-to-column composite joints
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主题演讲：可持续可解构半刚性梁柱组合节点的有限元分析
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
M. Bradford
中科院分区：
文献类型：
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作者：
A. Ataei;M. Bradford
本文利用ABAQUS通用软件对一种新型可拆卸螺栓剪力连接件半刚性梁柱组合节点进行了有限元模拟。文中考虑的这种节点的结构力学需要仔细考虑；为了准确地捕捉响应，需要使用计算技术，因为各种组件的相互作用是复杂的。对三个具有耐久性和可解构的半刚性梁柱节点的试件进行了试验，并将试验结果用于有限元模型的验证。预制的“绿色混凝土”(GC)板在制造过程中减少了排放，通过预紧的螺栓剪力连接件将其组合连接到钢梁上，组合梁使用带两排螺栓的平端板连接到H型钢柱。该数值模型模拟了梁柱组合节点在弯矩作用下的受力性能，并考虑了组合节点所有本构材料的非线性材料特性。实验测试是全尺寸的，所有部件的大小都与实际满足的大小相同。为了验证计算过程，文中将数值模拟结果与实验结果进行了比较，两者吻合较好。关键词：有限元模型、半刚性组合节点、可解构性、预制、连接
In this paper, an innovative sustainable semi-rigid beam-to-column composite joint with deconstructable bolted shear connectors is modelled by using the general purpose software ABAQUS. The structural mechanics of this joint considered in the paper requires careful consideration; in order to capture the response accurately using computational techniques as the interactions of the various components is complex. Three test specimens having sustainable and deconstructable semi-rigid beam-to-column joints have been tested and the results are used for validation of the finite element model. Precast “green concrete” (GC) slabs having reduced emissions during their manufacture were attached compositely to the steel beam via pre-tensioned bolted shear connectors, with the composite beam being connected to H-section columns a using flush end plate with two rows of bolts. The numerical model simulates the composite beam-to-column connection under hogging moment and includes the non-linear material properties of all constitutive materials of the composite joint. The experimental testing was full-sized, with all the components being of the same size as would be met in practice. For validation of the computational procedure, the results of the numerical modelling are compared in the paper with the experimental results, with good agreement being demonstrated. Keywords: FE modelling, Semi-rigid composite joint, deconstructablility, Precast, Connections