[1]潘秀珍,周兴鑫,王攀,等.新型外包加强型节点抗震性能试验研究[J].地震工程与工程振动,2019,39(02):089-98.[doi:10.13197/j.eeev.2019.02.89.panxz.010]
 PAN Xiuzhen,ZHOU Xingxin,WANG Pan,et al.Experimental study on seismic performance of new type of outsourced enhanced joint[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(02):089-98.[doi:10.13197/j.eeev.2019.02.89.panxz.010]
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新型外包加强型节点抗震性能试验研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年02
页码:
089-98
栏目:
论文
出版日期:
2019-04-30

文章信息/Info

Title:
Experimental study on seismic performance of new type of outsourced enhanced joint
作者:
潘秀珍 周兴鑫 王攀 尹晨皓 田建勃
西安理工大学 土木建筑工程学院, 陕西 西安 710048
Author(s):
PAN Xiuzhen ZHOU Xingxin WANG Pan YIN Chenhao TIAN Jianbo
School of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an 710048, China
关键词:
钢筋混凝土(RC)框架-轻钢增层混合结构低周往复荷载试验滞回曲线耗能能力抗震性能
Keywords:
reinforced concrete(RC) frame-lightweight steel mixed structurelow cycle reciprocating load testhysteretic curveenergy dissipation capacityseismic performance
分类号:
TU391
DOI:
10.13197/j.eeev.2019.02.89.panxz.010
摘要:
为了减小钢筋混凝土(RC)框架-轻钢增层混合结构的鞭梢效应,本文提出了一种用于该类结构的新型外包加强型节点,旨在加强对上部结构的约束,减小上下部结构的刚度突变。为了深入研究其抗震性能,与另一种外包锚固式节点进行了低周往复荷载作用下的对比性试验研究。结果表明:两种节点均表现为梁端塑性铰破坏,并能有效控制裂缝开展;新型外包加强型节点滞回曲线饱满,捏拢速度较慢,并能将塑性铰外移,有效保护了节点核心区,其刚度退化、等效黏滞阻尼系数、耗能能力等各项指标都较外包锚固式节点有不同程度的提升,提高了节点的承载力和刚度,具有更好的抗震性能。本文的研究可以为轻钢增层混合结构的推广应用提供科学依据和技术支持。
Abstract:
In order to reduce the whipping effect of the reinforced concrete(RC) frame-lightweight steel mixed structure, a new type of outsourced enhanced joint used for this kind of structure is proposed in this paper, which aims to strengthen the constraint on the upper structure, and reduce the stiffness mutation of the upper and lower structure. In order to study its seismic performance in depth, a comparative experimental study under low cycle reciprocating load was carried out with another outsourced anchored joint. The results show that the both kinds of joints are all characterized by plastic hinge failure of the beam end, and can effectively control the development of crack. The hysteretic curve of the new type of outsourced enhanced joint is full, the pinching speed is slow, and the plastic hinge can be moved outward, the core area of the joint is effectively protected, the stiffness degradation, equivalent viscous damping coefficient, energy dissipation capacity and other indicators are improved to different degrees than the outsourced anchored joint, which improves the bearing capacity and stiffness of the joint, and has better seismic performance. The research in this paper can provide scientific basis and technical support for the popularization and application of lightweight steel mixed structure.

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备注/Memo

备注/Memo:
收稿日期:2018-8-12;改回日期:2018-12-7。
基金项目:国家自然科学基金项目(51608441);中国博士后科学基金面上项目(2017M613174);陕西省自然科学基础研究计划项目(2017JQ5032);陕西省高校科协青年人才托举计划项目(20170513)
作者简介:潘秀珍(1968-),女,副教授,博士,主要从事钢结构方面的教学与研究.E-mail:13571828178@163.com
更新日期/Last Update: 1900-01-01