[1]冯帅克,周学军,郭正兴.装配式腋板加强型钢节点抗震性能试验研究[J].东南大学学报(自然科学版),2019,49(2):303-310.[doi:10.3969/j.issn.1001-0505.2019.02.015]
 Feng Shuaike,Zhou Xuejun,Guo Zhengxing.Experimental study on seismic performance of prefabricated haunch reinforced steel joints[J].Journal of Southeast University (Natural Science Edition),2019,49(2):303-310.[doi:10.3969/j.issn.1001-0505.2019.02.015]
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装配式腋板加强型钢节点抗震性能试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
49
期数:
2019年第2期
页码:
303-310
栏目:
土木工程
出版日期:
2019-03-20

文章信息/Info

Title:
Experimental study on seismic performance of prefabricated haunch reinforced steel joints
作者:
冯帅克1周学军2郭正兴1
1 东南大学土木工程学院, 南京 211189; 2 山东建筑大学土木工程学院, 济南 250101
Author(s):
Feng Shuaike1 Zhou Xuejun2 Guo Zhengxing1
1 School of Civil Engineering, Southeast University, Nanjing 211189, China
2 School of Civil Engineering, Shandong Jianzhu University, Jinan 250101, China
关键词:
装配式腋板加强型钢节点 抗震性能 试验研究 节点初始转动刚度
Keywords:
prefabricated haunch reinforced steel joints seismic performance experimental study initial rotational stiffness
分类号:
TU375
DOI:
10.3969/j.issn.1001-0505.2019.02.015
摘要:
提出了一种梁柱间加设腋板的新型装配式钢管柱工字钢梁节点.为深入研究该节点的抗震性能和受力机理,对2组不同腋板外伸长度的足尺节点模型进行了低周往复荷载作用下的试验研究,对节点的破坏模式、滞回性能、初始刚度、延性系数、刚度退化、耗能性能进行了分析.结果表明:在低周往复荷载作用下,试件在腋板外侧且靠近腋板端部位置的梁上钢材最先发生屈服,2组试件最终的破坏模式均为靠近腋板端部位置的螺栓孔处梁翼缘被拉断.腋板的设置有效转移了塑性铰,起到保护节点的作用,实现了“强连接,弱构件”的抗震设计理念;腋板的设置对提高节点承载力以及节点转动刚度有较大影响;随着腋板外伸长度的减小,腋板传递给梁的竖向荷载越大,使得钢梁越早进入屈服;腋板的加设使得腋板端部位置处的梁翼缘应力高度集中,加之螺栓孔对截面的削弱,使其成为影响节点延性的关键,应对该部位适当加强.
Abstract:
A new prefabricated haunch reinforced section connection between tubular columns and steel i-beams was proposed. To reveal the seismic performance of prefabricated haunch reinforced steel joints, experimental studies on two full-scale specimens under cycle reciprocating load were made, and the joint failure pattern, hysteresis property, ductility coefficient, stiffness degradation and moment-rotation curves of connection were analyzed. The results show that the failure pattern of the two full-scale joints can be summarized into yielding of steel beam in the exterior region of haunch plate arrangement and snap of beam flange on the bolt hole location at the extension end of the haunch plate. Through setting haunch reinforced section, the plastic hinge is transferred. Thus, it plays an important role in protecting the connection meeting the seismic design requirement of“strong joint-weak structural member”; The installation of haunch plates has significant influence on the bearing capacity of specimens and the rotation stiffness of joints. With the decrease of the extension length of the haunch plate, the greater vertical load is transferred from the haunch plate to the beam, making the earlier steel beam begin to yield; the haunch plate increases the beam flange stress and strain concentrations, and the cross-section is weakened by the bolt holes, it is the key to affecting the ductility of the joints. Thus the location of i-beam which near the haunch plate should be strengthened.

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备注/Memo

备注/Memo:
收稿日期: 2018-09-26.
作者简介: 冯帅克(1993—),男,博士生;郭正兴(联系人),男,博士,教授,博士生导师,guozx195608@126.com.
基金项目: “十三五”国家重点研发计划资助项目(2016YFC0701703)、山东省墙材革新与建筑节能科研开发资助项目(鲁建财指[2014]139号).
引用本文: 冯帅克,周学军,郭正兴.装配式腋板加强型钢节点抗震性能试验研究[J].东南大学学报(自然科学版),2019,49(2):303-310. DOI:10.3969/j.issn.1001-0505.2019.02.015.
更新日期/Last Update: 2019-03-20