| 潘秀珍,高欢,阿卜来则孜·奥斯曼江,李慎,梁刚.新型外包加强型混合节点非线性数值模拟及参数分析[J].计算力学学报,2022,39(6):712~721 |
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| 新型外包加强型混合节点非线性数值模拟及参数分析 |
| Nonlinear numerical simulation and parameter analysis of a new type of outsourcing enhanced hybrid joint |
| 投稿时间：2021-07-19 修订日期：2021-11-11 |
| DOI：10.7511/jslx20210719001 |
| 中文关键词: RC框架-钢结构加层混合结构 新型外包加强型 混合节点 耗能能力 抗震性能 |
| 英文关键词:RC frame-steel structure adding storey hybrid structure new outsourcing enhanced joint hybrid joint energy dissipation capacity seismic performance |
| 基金项目:陕西省科技厅自然科学基础研究计划(2021JM-333;2021JM-330;2020JQ-628)资助项目. |
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| 中文摘要: |
| 采用Abaqus有限元软件建立新型外包加强型混合节点模型,在验证模型正确性的基础上对其进行拟静力作用下的非线性分析,深入研究各个加载阶段的受力性能及破坏机制,并进行了相关参数对节点抗震性能的影响分析。结果表明,新型节点的最终破坏形态为梁端塑性铰破坏,外包混凝土及扩大包脚的嵌固作用使塑性铰远离节点核心区域,可以有效保护节点核心区和传力路径的连续性;滞回曲线较为饱满,具有较好的耗能能力和塑性变形能力;适当增大扩大包脚立面高度和水平长度,可以提高节点的初始刚度与承载力等性能,并根据相关参数研究给出了合理的设计建议范围,以便为工程设计提供参考。 |
| 英文摘要: |
| The paper uses finite element software ABAQUS to establish a new type of outsourced enhanced hybrid joint model.On the basis of validating the correctness of the model,a nonlinear analysis under quasi-static load is performed.An in-depth study of the mechanical performance and failure mechanism of each loading stage is carried out,and the impact of relevant parameters on the seismic performance of the joints is analyzed.The results show that the final failure form of the new type of joints is the plastic hinge failure at the beam end.The plastic hinge is far away from the core area of the joint due to the embedding function of outsourcing concrete and enlarged wrapped foot,which can effectively protect the core area of the joint and the continuity of force transmission path.The hysteresis loop is relatively full,with good energy dissipation capacity and plastic deformation capacity.The initial stiffness and ultimate bearing capacity of the joints can be improved by appropriately increasing the elevation height and horizontal length of the wrapped foot.According to the research results of related parameters,a reasonable range of design suggestions is given to provide references for engineering design. |
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