[1]蔡 苗,苏 骏. UHTCC新型框架梁柱中节点非线性有限元分析[J].湖北工业大学学报,2021,(1):79-83.
 CAI Miao,SU Jun. Nonlinear Finite Element Analysis of Beam-column Middle Joints of UHTCC New Frame[J].,2021,(1):79-83.
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 UHTCC新型框架梁柱中节点非线性有限元分析()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
期数:
2021年第1期
页码:
79-83
栏目:
湖北工业大学学报
出版日期:
2021-02-18

文章信息/Info

Title:
 Nonlinear Finite Element Analysis of Beam-column Middle Joints of UHTCC New Frame
文章编号:
1003-4684(2021)01-0079-05
作者:
 蔡 苗 苏 骏
 湖北工业大学土木建筑与环境学院, 湖北 武汉 430068
Author(s):
 CAI MiaoSU Jun
 School of Civil Engineering, Architecture and Environment, Hubei Univ. of Tech.,Wuhan 430068,China
关键词:
 UHTCC 梁柱节点 塑性损伤模型 有限元分析
Keywords:
 ultra high toughness cementitious composites beam-column joints the concrete damage model finite element analysis
分类号:
TU375.4
文献标志码:
A
摘要:
 基于UHTCC新型梁柱节点低周反复加载试验,用ABAQUS分析软件中混凝土塑性损伤模型对UHTCC新型框架梁柱节点进行非线性有限元分析。得到的骨架曲线、屈服位移、屈服荷载、极限荷载与试验结果吻合良好,说明所建立的模型合理。研究轴压比、节点核心区箍筋体积配箍率和UHTCC浇筑范围等参数对节点滞回曲线、骨架曲线、耗能能力的影响。结果表明:轴压比增大,屈服荷载、峰值荷载增大,但变形能力降低;节点配箍率增大,抗剪承载力增加不明显,说明UHTCC可部分替代节点箍筋抗剪;随着UHTCC浇筑范围增加,节点耗能能力增大,滞回环形状更趋于饱满。
Abstract:
 Based on the low-cycle repeated loading test of UHTCC new beam-column middle joints, the finite element analysis of the UHTCC new frame node was carried out by using the concrete plastic damage model in the ABAQUS analysis software. The obtained skeleton curve, yield displacement, yield load and ultimate load agree well with the experimental results, indicating that the model is reasonable. The influence of parameters such as axial compression ratio, core hoop volume ratio and UHTCC pouring range on the hysteresis curve, skeleton curve and energy dissipation capacity of the joint were studied. The results show that the axial compression ratio increases, the yield load and peak load increase, while the deformation capacity decreases; coupling ratio of the joint increases, shear capacity increases not obviously, which indicates that UHTCC can partially replace the joint stirrups to resist shear; with the increase of UHTCC pouring range, the node energy consumption capacity increases and the hysteresis loop shape becomes fuller.

参考文献/References:

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备注/Memo

备注/Memo:
[收稿日期] 2020-01-16
[基金项目] 湖北省科技厅重大专项(2017BEC008)
[第一作者] 蔡 苗(1996-), 女,湖北襄阳人,湖北工业大学硕士研究生,研究方向为新型混凝土材料,工程结构抗震分析
[通信作者] 苏 骏(1971-), 男,安徽六安人,工学博士,湖北工业大学教授,研究方向为新型混凝土材料与结构,工程结构抗震分析
更新日期/Last Update: 2021-02-19