|本期目录/Table of Contents|

[1]李晓东,闫胤积.蜂窝式可替换塑性铰梁柱节点力学性能[J].建筑科学与工程学报,2021,38(01):90-98.[doi:10.19815/j.jace.2020.04017]
 LI Xiao-dong,YAN Yin-ji.Mechanical Behavior of Honeycombed Replaceable Plastic Hinged Beam-column Joints[J].Journal of Architecture and Civil Engineering,2021,38(01):90-98.[doi:10.19815/j.jace.2020.04017]
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
38卷
期数:
2021年01期
页码:
90-98
栏目:
出版日期:
2021-01-20

文章信息/Info

Title:
Mechanical Behavior of Honeycombed Replaceable Plastic Hinged Beam-column Joints
文章编号:
1673-2049(2021)01-0090-09
作者:
李晓东闫胤积
(兰州理工大学 土木工程学院,甘肃 兰州 730050)
Author(s):
LI Xiao-dong YAN Yin-ji
(School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China)
关键词:
梁柱节点 塑性铰 蜂窝式耗能环 耗能能力
Keywords:
beam-column joint plastic hinge honeycomb energy consumption ring energy dissipation capacity
分类号:
TU311
DOI:
10.19815/j.jace.2020.04017
文献标志码:
A
摘要:
为避免梁柱翼缘相交处的焊缝在地震作用下发生脆性破坏,提出了一种蜂窝式可替换塑性铰节点形式,以实现中震可修的延性设计抗震目标。通过ABAQUS有限元分析软件对7个不同蜂窝式耗能环尺寸的节点模型、1个腹板开圆孔型削弱型节点模型、1个腹板开六边形孔型削弱型节点模型和1个普通梁柱节点模型在同等条件下进行了低周反复加载模拟。分析了各节点的滞回曲线、骨架曲线、刚度退化曲线、延性性能及塑性耗能曲线等,探讨蜂窝式耗能环的宽度和厚度对蜂窝式可替换塑性铰节点滞回性能的影响。结果表明:蜂窝式可替换塑性铰节点的滞回曲线饱满,刚度退化趋势良好; 延性指标均超过了3.0,具有良好的抗震性能; 增加蜂窝式耗能环厚度比增加蜂窝式耗能环宽度能够更有效地提高节点屈服后变形能力、承载能力及耗能能力; 节点屈服后变形能力和承载能力保持较好的状态; 蜂窝式可替换塑性铰节点保护了梁柱节点焊缝,能够有效实现塑性铰外移。
Abstract:
In order to avoid the brittle failure of the welds at the intersection of beam and column flanges under earthquake, a form of honeycomb replaceable plastic hinge joints was proposed to achieve the seismic target of repairable ductility design in moderate earthquakes. Low-cycle repeated loading simulation of the node models of seven different honeycomb energy dissipation ring sizes, one weakened node model with round hole opening, one weakened node model with hexagon hole opening and one ordinary beam-column node model was carried out by the ABAQUS under the same conditions. The hysteresis curve, skeleton curve, stiffness degradation curve, ductility performance and plastic energy consumption curve of each joint were analyzed, and the influences of the width and thickness of honeycomb energy dissipation ring on hysteretic performance of honeycomb replaceable plastic hinge joint were discussed. The results show that the hysteretic curve of the honeycomb replaceable plastic hinge node is full and the stiffness degradation trend is good. The ductility indicators exceed 3.0, so the joint has good seismic performance. Increasing the thickness of the honeycomb energy dissipation ring is more effective than increasing the width of the honeycomb energy dissipation ring, which can effectively improve the deformation capacity, bearing capacity and energy dissipation capacity of the specimen after yield. The deformation capacity and load-bearing capacity of the joint remains in a good state after yielding. The honeycomb replaceable plastic hinge joint protects the beam-column joint weld and effectively achieves the plastic hinge outward movement.

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相似文献/References:

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备注/Memo

备注/Memo:
收稿日期:2020-04-07
基金项目:国家自然科学基金项目(51968043,51978320)
作者简介:李晓东(1973-),男,甘肃会宁人,副教授,工学博士,E-mail:xdli@lut.cn。
更新日期/Last Update: 2021-01-20