[1]吴京,洪曼,郭立行.角钢拼接十字形无焊核心的高性能屈曲约束支撑试验研究[J].东南大学学报(自然科学版),2017,47(4):743-750.[doi:10.3969/j.issn.1001-0505.2017.04.019]
 Wu Jing,Hong Man,Guo Lihang.Experimental study on high-performance welding-free cruciform-shaped buckling-restrained braces with angle steel splicing core[J].Journal of Southeast University (Natural Science Edition),2017,47(4):743-750.[doi:10.3969/j.issn.1001-0505.2017.04.019]
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角钢拼接十字形无焊核心的高性能屈曲约束支撑试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
47
期数:
2017年第4期
页码:
743-750
栏目:
土木工程
出版日期:
2017-07-20

文章信息/Info

Title:
Experimental study on high-performance welding-free cruciform-shaped buckling-restrained braces with angle steel splicing core
作者:
吴京1洪曼1郭立行2
1东南大学混凝土与预应力混凝土教育部重点实验室, 南京 210096; 2福建绿城建筑设计有限公司, 厦门 361008
Author(s):
Wu Jing1 Hong Man1 Guo Lihang2
1Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
2Fujian Green City Architectural Design Co., Ltd, Xiamen 361008, China
关键词:
屈曲约束支撑 无焊十字形截面 低周疲劳 滞回性能
Keywords:
buckling-restrained brace welding-free cruciform-shaped core low cycle fatigue hysteretic behavior
分类号:
TU375.4
DOI:
10.3969/j.issn.1001-0505.2017.04.019
摘要:
为避免十字形截面屈曲约束支撑的内芯在焊接后对低周疲劳性能的不利影响,提出核心部件采用角钢拼接的无焊十字形截面.进行了3根屈曲约束支撑试件的拟静力滞回性能试验,其中无焊核心部件采用黏钢胶拼接4根等边热轧角钢的方法,避免焊接或直接铸造试件中不可控缺陷的产生.试验结果表明,该类支撑的滞回性能稳定,第1根角钢断裂前,试件的累积塑性变形能力远高于铸造十字形截面,比端部焊接加劲肋的一字形核心屈曲约束支撑也有所提高.在第1根角钢断裂后,剩余截面仍具有相当的耗能能力.3根试件的拉压不平衡系数均在1.1以下,满足AISC规定的1.3限值要求.
Abstract:
To avoid the reduction of low cycle fatigue performance due to welding in the steel core of cruciform cross-section of conventional buckling-restrained braces(BRBs), a new type of welding-free cruciform-shaped BRB with angle steel splicing core was developed. Uniaxial quasi-static cyclic tests for three BRB specimens were carried out to investigate the hysteretic behavior. The steel core of BRB consists of four combined angle steels with equal sides to form a welding-free cruciform cross-section using structure glue, to avoid uncontrollable defects from welding or directly casting. The test results indicate that this type of BRB specimens has stable hysteretic performance. Before the fracture of the first angle steel, the cumulative plastic deformation capacity of the specimens is much higher than that of the casting cruciform cross-section BRB and better than that of the rectangle cross-section BRB with end welding stiffening rib. After the fracture of the first angle steel, the rest sections of angle steel still have energy dissipation capacity. The tension and compression coefficients of the three specimens are all below 1.1, so the limit value of AISC 1.3 is satisfied.

参考文献/References:

[1] Tsai K C, Lai J W, Hwang Y C, et al. Research and application of double-core buckling restrained braces in Taiwan[C]//Proceeding of the 13th World Conference on Earthquake Engineering. Vancouver, BC, Canada, 2004, 2179: 1-15.
[2] Nakamura H,Maeda Y,Sasaki T, et al. Fatigue properties of practical scale unbonded braces[J]. Nippon Steel Technical Report,2000,82: 51-57.
[3] Building Seismic Safety Council. FEMA 450 NEHRP Recommended provision for seismic regulations for new buildings and other structures [R]. Washington, DC,USA: Building Seismic Safety Council, 2004.
[4] Fahnestock L A, Sause R, Ricles J M, et al. Ductility demands on buckling-restrained braced frames under earthquake loading[J]. Earthquake Engineering and Engineering Vibration, 2003, 2(2): 255-268. DOI:10.1007/s11803-003-0009-5.
[5] AISC. Seismic provisions for structural steel buildings[R]. Chicago, Illinois,USA: AISC, 2010.
[6] Chen X, Ge H, Usami T. Seismic demand of buckling-restrained braces installed in steel arch bridges under repeated earthquakes[J]. Journal of Earthquake and Tsunami, 2011, 5(2): 119-150. DOI:10.1142/s1793431111000942.
[7] 黄卿.全组装式屈曲约束支撑低周疲劳性能及抗震需求分析[D]. 南京: 东南大学土木工程学院, 2013.
[8] Wu Jing, Liang Renjie, Wang Chunlin, et al. Restrained buckling behavior of core component in buckling-restrained braces[J]. Advanced Steel Construction, 2012, 8(3): 212-225.
[9] 马宁. 全钢防屈曲支撑及其钢框架结构抗震性能与设计方法[D]. 哈尔滨: 哈尔滨工业大学土木工程学院, 2010.
[10] 高向宇, 张惠,杜海燕, 等.组合热轧角钢方屈曲支撑构造及抗震试验[J]. 北京工业大学学报, 2008, 34(5): 498-503.
  Gao Xiangyu, Zhang Hui, Du Haiyan, et al. Experiment on conformation and seismic performance of buckling-restrained brace made of composed hot-rolled angle steel [J].Journal of Beijing University of Technology, 2008, 34(5): 498-503.(in Chinese)
[11] 黄波, 陈泉, 李涛, 等. 国标Q235钢屈曲约束支撑低周疲劳试验研究[J]. 土木工程学报, 2013,46(6):29-34.
  Huang Bo, Chen Quan, Li Tao, et al. Low-cycle fatigue test of Q235 steel buckling-restrained braces[J]. China Civil Engineering Journal, 2013,46(6):29-34.(in Chinese)
[12] Wang C L, Usami T, Funayama J. Improving low-cycle fatigue performance of high-performance buckling-restrained braces by toe-finished method[J]. Journal of Earthquake Engineering, 2012, 16(8): 1248-1268. DOI:10.1080/13632469.2012.703385.
[13] 郭立行, 吴京. 铸造十字形截面屈曲约束支撑的抗震性能试验研究[J]. 建筑钢结构进展, 2016, 18(3): 10-17. DOI:10.13969/j.cnki.cn31-1893.2016.03.002.
Guo Lihang, Wu Jing. Experimental study on the seismic performance of casting cruciform-shaped buckling-restrained brace[J]. Progress in Steel Building Structures, 2016, 18(3): 10-17. DOI:10.13969/j.cnki.cn31-1893.2016.03.002. (in Chinese)
[14] 中国钢铁工业协会. GB/T 228.1—2010金属材料拉伸试验第1部分: 室温试验方法[S]. 北京:中国标准出版社, 2010.
[15] 黄波. 高性能屈曲约束支撑低周疲劳性能及抗震需求分析[D]. 南京: 东南大学土木工程学院, 2012.
[16] Chopra A K. 结构动力学理论及其在地震工程中的应用[M]. 谢礼立,等译. 北京:高等教育出版社, 2005:73-74.

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备注/Memo

备注/Memo:
收稿日期: 2016-11-27.
作者简介: 吴京(1971—),男,博士,教授,博士生导师,seuwj@seu.edu.cn.
基金项目: 国家重点研发计划资助项目(2016YFC0701400)、国家自然科学基金资助项目(51278105).
引用本文: 吴京,洪曼,郭立行.角钢拼接十字形无焊核心的高性能屈曲约束支撑试验研究[J].东南大学学报(自然科学版),2017,47(4):743-750. DOI:10.3969/j.issn.1001-0505.2017.04.019.
更新日期/Last Update: 2017-07-20