[1]史艳莉,李天昊,王文达.不同构造的圆钢管混凝土柱-H钢梁环板节点抗连续性倒塌性能分析[J].自然灾害学报,2017,(03):028-38.[doi:10.13577/j.jnd.2017.0304]
 SHI Yanli,LI Tianhao,WANG Wenda.Anti-progressive collapse performance analysis of different configurations ring plate connection between concrete-filled steel tubular column and H-steel beam[J].,2017,(03):028-38.[doi:10.13577/j.jnd.2017.0304]
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不同构造的圆钢管混凝土柱-H钢梁环板节点抗连续性倒塌性能分析
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
期数:
2017年03期
页码:
028-38
栏目:
出版日期:
2017-06-28

文章信息/Info

Title:
Anti-progressive collapse performance analysis of different configurations ring plate connection between concrete-filled steel tubular column and H-steel beam
作者:
史艳莉 李天昊 王文达
兰州理工大学 甘肃省土木工程防灾减灾重点实验室, 甘肃 兰州 730050
Author(s):
SHI Yanli LI Tianhao WANG Wenda
Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China
关键词:
钢管混凝土环板式节点连续性倒塌有限元分析构造变化性能分析
Keywords:
concrete-filled steel tubering plate connectionprogressive collapsefinite element analysischange configurationperformance analysis
分类号:
TU398;P315.92
DOI:
10.13577/j.jnd.2017.0304
摘要:
使用有限元分析软件ABAQUS,模拟了中柱失效工况下圆钢管混凝土柱-H钢梁外环板式节点的连续性倒塌全过程,并认为环板、钢梁以及节点核心区三部分的构造变化会对节点连续性倒塌造成很大的影响。结果表明:节点环板外伸尺寸影响塑性铰的形成位置,但改变环板外伸尺寸对连续性倒塌性能提升不明显,故此在设计中选用哪种环板应充分考虑结构、工艺以及经济方面的需要。钢梁的构造影响着连续性倒塌工程中悬链线效应的发挥,抗连续性倒塌设计中建议使用扩翼式节点,不建议使用翼缘削弱式节点,而腹板开孔式节点可以在净空高度不够的情况下使用。节点核心区的构造方式会影响梁柱连接处焊缝的脆性破坏,设计时建议采用腋板加强式节点。对现有建筑进行抗倒塌加固时,建议焊接水平加劲肋或明牛腿,该方法可以大幅提升已有结构的抗连续性倒塌性能。
Abstract:
In this paper, the finite element analysis software ABAQUS was used to simulate the progressive collapse process of concrete-filled steel tubular column to H-steel beam with ring plate connections under the failure condition of the middle column. It was considered that the konstructional change of three parts of the ring plate, steel beam and the joint core area has great influence on the resistance to the progressive collapse of the connections. The research shows that the ring plate extended size may affect the position of plastic hinge, but its effect on performance of the progressive collapse is not obvious, therefor, the selection of the ring plate should fully consider the structure, procedure and economic needs. The structure of steel beam influences giving play to catenary action. In the design of anti-progressive collapse, extended wing connection is recommended for use and flange weakened connection is not recommended to be used. In the case of insufficient headroom, the connection with openings on beam webs may be used. The constructional mode of core area of the connection may affect the brittle failure of the weld. In the design, the haunch enhanced connection is recommended to be used. When the existing building is reinforced, weld of horizontal reinforced rib or open corblel is suggested, this method may greatly enhance progressive collapse-resisting ability of existing structure.

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备注/Memo

备注/Memo:
收稿日期:2016-04-14;改回日期:2016-08-10。
基金项目:国家自然科学基金(51268038);兰州理工大学"红柳杰出人才培养计划"(J201305)
作者简介:史艳莉(1977-),女,博士生,副教授,从事钢与混凝土组合结构研究,E-mail:ceshiyl@163.com
通讯作者:王文达(1976-),男,博士,教授,从事钢与混凝土组合结构及结构抗火研究,E-mail:wangwd@lut.cn
更新日期/Last Update: 1900-01-01