Numerical simulation of beam-to-column connections in precast reinforced concrete buildings using fibre-based frame models
Numerical simulation of beam-to-column connections in precast reinforced concrete buildings using fibre-based frame models
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DOI：
10.1016/j.engstruct.2019.109845
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发表时间：
2020-01
影响因子：
5.5
通讯作者：
R. Sousa;N. Batalha;H. Rodrigues
中科院分区：
文献类型：
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作者：
R. Sousa;N. Batalha;H. Rodrigues
最近的地震暴露了预制钢筋混凝土结构的不良性能，对结构和非结构构件都造成了破坏。梁柱连接处的集中损伤突出了这些系统的脆弱性，需要了解和提高其抗震性能。在过去，一些作者已经解决了在高效软件包中连接系统的数值模拟问题。然而，这些模型无法独立描述不同的机制，因此难以应用于通用连接解决方案。一旦确定了所涉及的主要横向荷载抵抗机制，提出了一个新的数值模型，用于计算摩擦，销钉行为和氯丁橡胶成分的贡献。提出的模型通过不同的实验测试进行了验证，并进行了参数化研究，以了解不同成分的贡献，特别是在最大水平强度和滞后能量耗散方面的影响。
Recent earthquakes exposed the poor performance of precast RC structures, imposing damage on both structural and non-structural elements. The concentration of damage at the beam-to-column connections highlights the vulnerability of these systems and the need to understand and improve its seismic performance. The numerical simulation of connection systems in efficient software packages has been addressed in the past by several authors. However, these models fail in describing the different mechanisms independently and, therefore, are difficult to apply to generic connection solutions. Once identified the main lateral load resisting mechanisms involved, a new numerical model is proposed accounting for friction, dowel behaviour and the contribution of the neoprene components. The proposed model was validated against different experimental tests and a parametric study was performed to understand the contribution of the different components, especially in what concerns to the maximum horizontal strength and hysteretic energy dissipation.